Volkswagen Polo 1995 User Manual

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Service

Workshop Manual

Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 1998 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Golf Plus 2005 ➤ , Golf Plus 2009 ➤ , Golf Variant 1998 ➤ , Lupo 1999 ➤ , Lupo 3L 1999 ➤ , Passat 1997 ➤ , Passat 2006 ➤ , Passat CC 2009 ➤ , Passat Variant 1997 ➤ , Phaeton 2003 ➤ , Polo 1995 ➤ , Polo 2002 ➤ , Polo 2010 ➤ , Polo KH IN 2010 ➤ , Polo Lim IN 2011 ➤ , Polo Lim RUS 2011 ➤ , Scirocco 2009 ➤ , Sharan 1996 ➤ , Sharan 2011 ➤ , Tiguan 2008 ➤ , Touareg 2003 ➤ , Touareg 2010 ➤ , Touran 2003 ➤

Electrical System, General Information

Edition 07.2010

Service Department. Technical Information

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Service

List of Workshop Manual Repair GroupsList of Workshop Manual Repair GroupsList of Workshop Manual Repair Groups

Re pa ir G ro up

27 - Starter, current supply, CCS

90 - Gauges, instruments

92 - Windscreen wash/wipe system

94 - Lights, bulbs, switches - exterior

96 - Lights, bulbs, switches - interior

97 - Wiring

Technical information should always be available to the foremen and mechanics, because their careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course, be observed.

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

27 - Starter, current supply, CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Fundamentals for batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Types of batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3 Warning notices and safety regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.4 Battery terminal connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Checking battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Checking the various types of batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Visual check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Checking colour display of magic eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4 Battery tester with printer VAS 5097 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.5 Battery tester with printer VAS 6161 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.6 Midtronics MCR340V battery tester only for USA/Canada vehicles . . . . . . . . . . . . . . . . . . 18

2.7 Current draw test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.8 Checking no-load voltage of battery on stock and stored vehicles . . . . . . . . . . . . . . . . . . 23

3 Charging battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1 Battery charger VAS 5095 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.2 Battery charger VAS 5900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.3 Battery charger VAS 5903 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3.4 Battery charger VAS 5906 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

3.5 Midtronics INC 940 battery charger only for USA/Canada . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Electrical System, General Information - Edition 07.2010

Contents

3.6 Solar panel VAS 6102A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

3.7 Totally discharged batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

4 Cruise control system (CCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

4.1 Activating and deactivating cruise control system (CCS) . . . . . . . . . . . . . . . . . . . . . . . . . . 61

90 - Gauges, instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

92 - Windscreen wash/wipe system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

1 Washer fluid line hose couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

1.1 Windscreen and rear window washer system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

1.2 Headlight washer system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

2 Hose repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

2.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

2.2 Repairing smooth pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

2.3 Repairing corrugated pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

3 Distinguishing features of jointless wiper blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

94 - Lights, bulbs, switches - exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

1 Operation and safety notes for gas discharge bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

96 - Lights, bulbs, switches - interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

1 12 V socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

1.1 Removing and installing 12 V socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

1.2 Removing and installing socket illumination bulb L42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

2 Cigarette lighter U1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

2.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

2.2 Assembly overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

2.3 Removing and installing cigarette lighter socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

2.4 Removing and installing cigarette lighter illumination bulb L28 . . . . . . . . . . . . . . . . . . . . . . 76

97 - Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Contents i

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

1 Vehicle diagnostic, testing and information systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

1.1 Connecting vehicle diagnostic tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

1.2 Connecting vehicle diagnostic tester Golf Model Year 1998 - 2003 . . . . . . . . . . . . . . . . . . 80

2 Repairing wiring harnesses and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.1 Wiring harness repair set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

2.2 Tool descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

2.3 General notes concerning repairs to vehicle electrical system . . . . . . . . . . . . . . . . . . . . . . 85

2.4 Repairs to wiring harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

2.5 Repairs to contact housings and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

2.6 Releasing and dismantling contact housings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

3 Contact surface cleaning set VAS 6410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

3.1 Using contact surface cleaning set VAS 6410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

4 Renewing Lambda probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

4.1 Renewing LSF Lambda probe (4-pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

4.2 Renewing LSU Lambda probe (6-pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

4.3 Types of protective tube on uniform Lambda probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

ii Contents

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

27 – Starter, current supply, CCS

1 Battery

WARNING

Caution

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

To prevent damage to the battery and vehicle, the following should be observed concerning types of battery ⇒ page 1 .

1.1 Fundamentals for batteries

To ensure long use of the battery, the battery must be checked, serviced and maintained according to the specifications in this manual.

Apart from supplying energy for starting the engine, the battery has other tasks: it acts as a buffer and supplies electrical energy to the complete electrical onboard supply of the vehicle.

1.2 Types of batteries

General notes

Caution

The description for the following batteries is for maintenancefree batteries. No stickers may be removed and do not replen‐ ish with distilled water. Only perform a visual check. Refer to chapter, Checking battery ⇒ page 5 .

1.2.1 Battery with magic eye

This is a maintenance-free battery with liquid electrolyte (wet bat‐ tery).

Caution

No stickers may be removed and do not replenish with distilled water. Only perform a visual check. Refer to chapter, Checking battery ⇒ page 5 .

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting.

These batteries must be renewed.

1. Battery 1

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

This battery is equipped with a magic eye. The magic eye pro‐ vides information concerning the level of the electrolyte and the charge state of the battery via a coloured display. Checking colour display of the magic eye ⇒ page 6

1.2.2 Absorbent glass mat battery

Maintenance-free battery with a contained electrolyte and no magic eye.

Lead-acid battery where the electrolyte is contained within a mi‐ croscopic glass mat (AGM). The battery is sealed and fitted with valves.

AGM is the abbreviation for absorbent glass mat.

Due to containment of the electrolyte, this type of battery may not have a magic eye. Absorbent glass mat batteries are identified by the abbreviation AGM on the battery.

Note

Always replace an absorbent glass mat battery with another ab‐ sorbent glass mat battery.

1.3 Warning notices and safety regulations

1.3.1 Dangers when handling vehicle batter‐ ies

Recognition and avoidance of dangers

Batteries can be dangerous. These dangers can be avoided when the warnings on the battery, in the operating manual and in ELSA are observed.

2 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

WARNING

♦ Untrained personnel e.g. apprentices, trainees etc. may

only work on batteries when supervised by a vehicle me‐ chanic/foreman or vehicle electrician/foreman.

♦ Acid is highly corrosive. There is a considerable danger of

acid burns if personnel do not handle batteries correctly. Therefore suitable measures must be taken to ensure that equipment/solutions etc. are available to neutralize acid burns. A suitable solution is: e.g. a soap solution.

♦ If electrolyte leaks from a battery it may cause skin burns

or acid corrosion and rusting on the vehicle. This may damage safety relevant components on the vehicle.

♦ The gas which forms when charging and the gas which

may escape through vent valves is explosive. In extreme cases a battery may explode if the battery is not handled correctly.

♦ Batteries must be renewed where the magic eye is col‐

ourless or light yellow. They must not be checked or charged and do not slave/jump start. Danger of explosion when checking and charging or slave/jump starting.

♦ It is prohibited to cause sparks through grinding, welding,

cutting operations and use naked lights in the vicinity of batteries. Smoking is also prohibited. Sparks generated by electrostatic charging must also be avoided. Always touch the vehicle body before touching the battery.

♦ Only work on batteries in well ventilated and suitable

rooms.

1.3.2 Safety markings on battery

Safety markings on battery

1. - Fires, sparks, naked flames and smoking are prohibited when handling batteries. Avoid sparks as well as electrostatic discharge when working with cables and electrical units. Avoid short circuits. Therefore never lay a tool on a battery.

2. - Wear eye protection before commencing work on battery.

3. - Keep children away from acid and batteries.

4. - Disposal: old batteries are classed as hazardous waste. They may only be disposed of through a suitable collection centre and only in accordance with respective legislation.

5. - Never dispose of old batteries in household waste system!

6. - There is a danger of an explosion when working with batteries. A highly explosive gas is produced when batteries are charged.

7. - Always follow instructions on battery, in ELSA "Electrical Sys‐ tem, General Information" and in owner's manual.

8. - Battery acid is very caustic; therefore wear eye protection and gloves when working with batteries. Do not tilt battery. Acid can leak out of the gas vents of some batteries.

1. Battery 3

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

1.4 Battery terminal connection

Caution

To prevent damage to the battery clamps and battery termi‐ nals, the following should be observed:

♦ The battery clamps should only be fitted by hand and with‐

out using force.

♦ Battery terminals should not be coated with grease.

♦ The battery clamps should be fitted so that the battery ter‐

minal is either flush with the clamp or protruding from it.

♦ Once the battery clamps have been tightened to the speci‐

fied torque, the threaded connections should not be tight‐ ened any further.

4 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

2 Checking battery

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

Caution

To prevent damage to the battery and vehicle, the following should be observed concerning types of battery ⇒ page 1 .

2.1 Checking the various types of batteries

2.1.1 Checking battery with magic eye

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

Carry out procedure in sequence as follows:

1. Visual check ⇒ page 6

2. Check colour display of „3-colour“ magic eye ⇒ page 6 or „2-colour“ magic eye ⇒ page 7 .

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

3. Perform a battery load test using battery tester with printer

-VAS 5097 A- ⇒ page 9 .

– Battery test with battery tester with printer -VAS 6161-

⇒ page 14 .

4. Depending on the result of the battery test, „perform current draw test“ ⇒ page 22 .

2.1.2 Absorbent glass mat battery

Carry out procedure in sequence as follows:

1. Visual check ⇒ page 6

2. Perform a battery load test using battery tester with printer

-VAS 5097 A- ⇒ page 9 .

– Battery load test with battery tester with printer -VAS 6161-

⇒ page 14

2. Checking battery 5

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

3. Depending on the result of the battery test, „perform current draw test“ ⇒ page 22 .

2.2 Visual check

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

It is essential to visually inspect the external condition, to check the terminals and to ensure proper attachment of the battery be‐ fore performing extensive tests.

Caution

♦ The battery will be damaged if the battery is not secured

correctly.

♦ Vibrations shorten the life of the battery, there is a danger

of an explosion, the cell plates may be damaged and the clamping bracket may damage the battery housing.

♦ Check battery is securely seated, if necessary tighten se‐

curing bolt to specified torque.

Performing this test establishes:

♦ If battery housing is damaged Electrolyte can leak out if the

housing is damaged. If battery acid leaks out, serious damage to the vehicle could be caused. Treat components affected by leaked battery acid immediately with acid neutraliser or a soap solution.

♦ Check whether the battery terminals (battery wire connec‐

tions) are damaged. The necessary contact on the battery clamps cannot be guaranteed if the battery terminals are dam‐ aged. When connecting the battery clamps, tighten the battery clamps to torque specified in this workshop manual „Electrical system“ for the respective vehicle. If the battery clamps are not correctly seated and tightened, the wiring may burn. Which will cause malfunctions in the electrical system. Therefore it can no longer be guaranteed that the vehicle will function cor‐ rectly.

2.3 Checking colour display of magic eye

2.3.1 Checking colour display of „3-colour“

magic eye

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

6 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

General information on magic eye:

Applies for all batteries with „1J0“, „7N0“ and „3B0“ indexes in original equipment and for all replacement batteries 191 915 105 AB and from „000 915 105 AX“ index.

The magic eye provides information concerning electrolyte level and the charge state of the battery.

Before carrying out a visual check, tap the magic eye lightly and carefully using the handle of a screwdriver. The air bubbles, which can influence the display, will dissipate when doing this. The col‐ our display of the magic eye will therefore be more accurate.

Note

♦

Air bubbles can form below the magic eye particularly when the battery is being charged, including during normal vehicle operation. These distort the colour displayed by the magic eye.

♦

Because the magic eye is located in only one cell, the display applies only to this cell. An exact determination of the battery condition is only possible through a battery load test

⇒ page 9 or a battery test ⇒ page 14 .

♦

The magic eye can be located at various positions on the bat‐ tery.

Three different colour displays are possible:

♦ »Green«, battery is charged sufficiently.

♦ »Black«, battery partly discharged, charge state < 65 % or

completely discharged

♦ »Colourless or light yellow«, battery must be renewed.

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

2.3.2 Checking colour display of „2-colour“

Danger of injury! Observe warning notices and safety regula‐

WARNING

magic eye

WARNING

tions ⇒ page 2 !

2. Checking battery 7

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

General information on magic eye:

For batteries from „5K0“ index in original equipment and for re‐ placement batteries 191 915 105 AC from „000 915 105 DX“ index, the »green« colour display for charge state display has been discontinued. The introduction of the new colour display will take place gradually, i.e. there will be a transition period for both displays. In the future, the only remaining colours will be »black« or »colourless or light yellow«.

The magic eye provides information concerning the electrolyte level of the battery.

The charge state of the battery can no longer be read from the magic eye, a battery load test must be carried out for this

⇒ page 9

Before carrying out a visual check, tap the magic eye lightly and carefully using the handle of a screwdriver. The air bubbles, which can influence the display, will dissipate when doing this. The col‐ our display of the magic eye will therefore be more accurate.

Note

♦

Air bubbles can form below the magic eye particularly when the battery is being charged, including during normal vehicle operation. These distort the colour displayed by the magic eye.

♦

Because the magic eye is located in only one cell, the display applies only to this cell. An exact determination of the battery condition is only possible through a battery load test

⇒ page 9 .

♦

The magic eye can be located at various positions on the bat‐ tery.

Three different colour displays are possible:

♦ »Black«, electrolyte level is OK.

♦ »Colourless or light yellow«, electrolyte level too low. The bat‐

tery must be renewed.

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

2.4 Battery tester with printer -VAS 5097 A-

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

It is not necessary to remove or disconnect battery when using battery tester with printer -VAS 5097 A- .

Battery tester with printer -VAS 5097 A- can be used to test 12 V starter batteries.

8 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

♦ 80 - 520 A low-temperature test current according to DIN

(Deutsche Industrie Norm (German Industrial Standard))

1)

♦ 95 - 574 A cold cranking current according to IEC (Interna‐

tional Engineering Consortium)

♦ 136 - 855 A cold cranking current according to EN/ SAE (Eu‐

ropean Norm/Standard of Automotive Engineers)

1) Batteries with cold cranking current higher than 499 A according to DIN (e.g. 520 A, 580 A or 600 A) can be temporarily tested using setting for 499 A according to DIN.

For test purposes the battery is loaded with a current which is similar to the starting current required to start the vehicle. The battery is assessed on this loading and the result is printed out.

Note

Observe the ⇒ instruction manual of Battery tester with printer VAS 5097 A- or the sticker ⇒ Brief instructions for battery tester with printer -VAS 5097 A- on the unit or table: Cold cranking cur‐ rent ⇒ page 11 .

2.4.1 Description of battery tester with printer

Battery tester with printer -VAS 5097 A-

-VAS 5097 A-

1 - Green LED, „unit operating“

2 - Red LED, „unit reverse-polarity connected“

3 - Red LED, „battery cannot be tested“, recharge battery.

4 - Start button

5 - Cold cranking current selection switch

6 - ON/OFF and functions switch

7 - Selection switch (battery tester to pick-off point on battery/ external test point in engine compartment)

8 - Paper feed button

9 - Printer

2.4.2 Performing battery load test using bat‐ tery tester with printer -VAS 5097 A-

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

Special tools and workshop equipment required

2. Checking battery 9

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

♦ Battery tester with printer -VAS 5097 A-

Note

Observe technical product information TPI 2012182 for battery tester with printer -VAS 5097 A- .

Performing battery load test:

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

Note

The battery must have a temperature of at least 10 °C.

– Switch off ignition and all electrical consumers.

WARNING

– Check magic eye on batteries with magic eye ⇒ page 5 .

– Check low-temperature test current in amperes (A) according

to DIN from indications on battery or set setting range on bat‐ tery tester with printer -VAS 5097 A- according to table

⇒ „2.4.3 Table: cold cranking current“, page 11 .

Note

If the battery values are shown in IEC or EN/SAE instead of DIN then convert figures using table

⇒ „2.4.3 Table: cold cranking current“, page 11 or using table

on unit.

– Select low-temperature test current via low-temperature test

current selection switch ⇒ page 9 .

– Select measuring range 80 - 379 A or 380 - 499 A with ON/

OFF and functions switch ⇒ page 9 .

10 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Note

Batteries with cold cranking current higher than 499 A according to DIN (e.g. 520 A, 580 A or 600 A) can be temporarily tested using setting for 499 A according to DIN.

– Connect red terminal „+“ of tester to positive terminal.

– Connect black terminal „-“ of tester to negative terminal.

♦

Ensure test clamps have a good contact!

♦

Observe technical product information TPI 2012182 for battery tester with printer -VAS 5097 A- .

– Select point of connection of test terminals with selection

Note

switch ⇒ page 9 .

1 - Connected directly to battery

2 - Connected to external test points in engine compartment

– Check that the figures given on the battery are correct for the

settings on the battery tester.

– Press start test button ⇒ page 9 .

Electrical System, General Information - Edition 07.2010

The green LED lights up ⇒ page 9 . The test program runs through automatically. The test result is printed out by the printer

⇒ page 12 . If the unit does not start (LED does not light up, no

print out), recharge battery ⇒ page 25 and test again.

– Switch off unit ⇒ page 9 .

– Remove test terminals.

Note

♦

The test is completed after about 20 seconds.

♦

The result of the test is printed out by the printer.

♦

Perform test once only. Repeating the test falsifies the result.

♦

The tester requires approx. 30 minutes to cool down before it is ready for the next test.

2.4.3 Table: cold cranking current

Cold cranking current in A

EN/ SAE IEC ⇒ DIN

136 – 17 95 – 124 ⇒ 80 – 104 178 – 219 125 – 154 ⇒ 105 – 129 220 – 261 155 – 184 ⇒ 130 – 154 262 – 303 185 – 214 ⇒ 155 – 179 304 – 345 215 – 244 ⇒ 180 – 204 346 – 387 245 – 274 ⇒ 204 – 229 388 – 429 275 – 304 ⇒ 230 – 254 430 – 471 305 – 334 ⇒ 255 – 279 472 – 513 335 – 364 ⇒ 280 – 304

2. Checking battery 11

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

Cold cranking current in A

EN/ SAE IEC ⇒ DIN

514 – 555 365 – 394 ⇒ 305 –329 556 – 597 395 – 424 ⇒ 330 – 354 598 – 639 425 – 454 ⇒ 355 – 379 640 – 657 455 – 464 ⇒ 380 – 389 658 – 675 465 – 474 ⇒ 390 – 399 676 – 693 475 – 484 ⇒ 400 – 409 694 – 711 485 – 494 ⇒ 410 – 419 712 – 729 495 – 504 ⇒ 420 – 429 730 – 747 505 – 514 ⇒ 430 – 439 748 – 765 515 – 524 ⇒ 440 – 449 766 – 783 525 – 534 ⇒ 450 – 459 784 – 801 535 – 544 ⇒ 460 – 469 802 – 819 545 – 554 ⇒ 470 – 479 820 – 837 555 – 564 ⇒ 480 – 489 838 – 855 565 – 574 ⇒

2) 1) Batteries with cold cranking current higher than 499 A according to DIN (e.g. 520 A, 580 A or 600 A) can be temporarily tested using setting for 499 A according to DIN.

2.4.4 Evaluating test result of battery load test

Because of the high load on the battery during this test (a high current flows) the battery voltage drops.

♦ If the battery is OK, the voltage value drops only to the mini‐

mum voltage.

♦ If the battery is defective or has a low charge, the battery volt‐

age quickly drops below the minimum voltage.

♦ After the test is completed, this low voltage value remains over

a longer period, and the voltage increases very slowly again.

♦ Perform test once only. Repeating the test falsifies the result.

♦ The tester requires approx. 30 minutes to cool down before

carrying out another test or testing another battery to ensure the results are not falsified.

490 – 4992)

1)

12 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

2.4.5 Comments concerning test print out

1 - Measuring range selected on tester

2 - Diagram -arrow- indicates battery condition.

3 - Test result

4 - Battery voltage during load test.

5 - Vehicle data and date Must be completed by test personnel

Note

♦

The test printout is required for warranty claims.

♦

Perform test once only. Repeating immediately the test falsi‐ fies the result.

2.4.6 Assessing test results

Printout from battery tester Measure to be performed

Starting capability very good Battery OK. Starting capability good Battery OK. Starting capability sufficient Evaluation by carrying out a

Starting capability poor Evaluation by carrying out a

Starting capability very poor Evaluation by carrying out a

Cannot be tested Perform battery charging

current draw test when charg‐ ing ⇒ page 22

⇒ page 25 and repeat test.

2. Checking battery 13

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

2.5 Battery tester with printer -VAS 6161-

General description

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

It is not necessary to remove or disconnect battery when using battery tester with printer -VAS 6161- .

The battery tester with printer -VAS 6161- does not load the bat‐ tery any more. It works on the principle of dynamic conductance acquisition.

Every battery type is stored in the tester.

Data can be stored on an SD card.

The battery tester with printer -VAS 6161- can be updated via an interface or an SD card, so that battery data from Volkswagen are always up to date.

The integrated temperature sensor improves measurement qual‐ ity.

A 2D scanner is available as an option to read data directly from the bar code of the battery.

Note

Observe the ⇒ operating manual of the battery tester with printer

-VAS 6161- .

2.5.1 Description of battery tester with printer

-VAS 6161-

1 - Integrated printer

2 - Operating lever for paper compartment

3 - Paper slot

4 - LCD screen with main menu

5 - Control panel with On/Off button

6 - Connection for battery test cable

7 - Memory card slot

8 - Infrared temperature sensor

9 - Data transmitter for PC

14 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

2.5.2 Perform battery test with battery tester with printer -VAS 6161- .

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

Special tools and workshop equipment required

♦ Battery tester with printer -VAS 6161-

Performing battery test:

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

– Switch off ignition and all electrical consumers.

– Check magic eye on batteries with magic eye ⇒ page 5 .

– Switch on unit.

– Connect red terminal „+“ of tester to positive terminal.

– Connect black terminal „-“ of tester to negative terminal.

Note

Ensure test clamps have a good contact!

– Select one of the following functions.

♦ Maintenance test (only in new cars before registration, in sta‐

tionary and stock maintenance programme ⇒ page 16 )

♦ Service test ⇒ page 16

♦ Guarantee test ⇒ page 17

2. Checking battery 15

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

Note

♦

The test is completed after about 10 seconds.

♦

The result of the test is printed out by the printer.

♦

The tester requires no cooling phase before it is ready for the next measurement.

2.5.3 Performing maintenance test

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

– Select „Maintenance test“ in the menu.

– Connect scanner.

Note

If no scanner is available, write vehicle identification number on test printout by hand.

– Scan in vehicle identification number.

– Select „On battery terminal“ or „On jump-start point“.

– Scan in barcode or select type and manufacturer manually in

menu.

– Measure temperature. Hold temperature sensor about 5 cm

above terminal connection until temperature stabilises.

– Start test.

– Print out test log if necessary.

2.5.4 Perform service test

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

– Select „Service test“ in the menu.

– Select „On battery terminal“ or „On jump-start point“.

– Select vehicle type.

– Measure temperature. Hold temperature sensor about 5 cm

above one battery terminal until temperature stabilises.

16 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

– Select battery type „Normal“, „AGM“, „2*6V“ or „Gel“.

– Select „CCA“, „JIS“, „DIN“, „SAE“, „IEC“ or „EN“ norm.

– Start test.

– Print out test log if necessary.

2.5.5 Perform guarantee test

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

– Select „Guarantee test“ in the menu.

– Select „In vehicle“ or „Outside vehicle“.

– Select „On battery terminal“ or „On jump-start point“.

– Select vehicle type.

– Measure temperature. Hold temperature sensor about 5 cm

above one battery terminal until temperature stabilises.

– Select battery type „Normal“, „AGM“, „2*6V“ or „Gel“ or scan

in.

– Select battery capacity or scan in.

– Start test.

– Print out test log if necessary.

2.5.6 Comments concerning test print out

1 - Check type.

2 - Battery test result

3 - Measured voltage

4 - Measured cold start value of battery.

5 - Nominal cold start value of battery selected on tester.

6 - Measured temperature of battery.

7 - Fitting location of battery

8 - Position of battery clamp selected on tester

9 - Selected battery technology.

Note

The test printout is required for warranty claims.

2.5.7 Assessing test results

Evaluating battery test results for guarantee and service tests

Battery test results Measures

Battery OK No measures on battery

2. Checking battery 17

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

Battery test results Measures

Battery OK - recharge. Charge battery ⇒ page 25 . In

case of discharging, look for fault

Perform current draw test Perform current draw test

⇒ page 22 . Fully charge bat‐

tery ⇒ page 25 and repeat test.

Renew battery. Disconnect battery and repeat

Battery cell defective - renew. Renew battery. Check connection. Connect cable directly to bat‐

Evaluating battery test results for maintenance test

Battery test results Measures

Battery OK No measure Charge battery immediately. Charge battery fully

Mark as defective. Mark as defective. Check tester connection. Disconnect battery and repeat

Check connection. Connect cable directly to bat‐

Noises Wait until measured value ap‐

test. The result „Renew battery“ may be caused by a weak cable contact.

tery and not to jump start termi‐ nal.

⇒ page 25 .

test. The result „Check tester connection“ may be caused by a weak cable contact.

tery and not to jump start termi‐ nal.

pears on display.

2.6 Midtronics -MCR340V- battery tester only for USA/Canada vehicles

General description ⇒ page 18

Perform battery test with Midtronics -MCR340V- battery tester

⇒ page 19 .

Dealing with problems with Midtronics -MCR340V- battery tester

⇒ page 21

2.6.1 General description

WARNING

Danger of injury.

Before working on the battery, read through the warning and safety regulations carefully, and comply with them ⇒ page 2 .

Dispose of electrolyte (mixture of sulphuric acid and water) safely! Waste electrolyte is only allowed to be disposed of at appropriately indicated collecting points. Comply with the lo‐ cally applicable disposal guidelines.

Do not test batteries that are liberating gas. Otherwise, there is a danger of explosion.

18 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

Note

To prevent damage to the battery and vehicle, note the types of battery and the remarks given ⇒ page 1 .

Batteries in VW vehicles are only allowed to be tested with battery testers approved by VW. In the USA/Canada, it is permitted for the Midtronics -MCR340V- battery tester to be used.

Read all the information about safety, setup and operation in the operating instructions for the Midtronics -MCR340V- battery test‐ er and follow the instructions to the letter.

Refer to ⇒ Self-study programme No. ; Vehicle batteries for more information.

The following charging and analysis procedures apply to all bat‐ teries, all battery installation locations (engine compartment or luggage compartment) and battery purposes (starter battery or second/convenience battery).

Always comply with the safety regulations, the regulations for setting up the battery tester, the display menu/display buttons, LEDs and the operating procedures described in the ⇒ operating manual MCR340V .

Observe and comply with all subsections, remarks and referen‐ ces to the vehicle and battery type, etc. to be tested.

2.6.2 Performing battery test with Midtronics -

Prerequisites:

Note

Before working on the battery, read through the warning and

MCR340V- battery tester

WARNING

safety regulations carefully, and comply with them ⇒ page 2 .

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

– Read general description ⇒ page 18 .

– Perform visual check ⇒ page 6 .

2. Checking battery 19

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

– Open bonnet or cover for other installation location of battery.

– Determine whether battery type is „Standard“ or „AGM“.

– Remove covers from battery positive and negative terminals.

– Use wing covers or other kinds of cover before you use equip‐

ment in engine compartment or interior.

– Close all doors.

Note

♦

Battery temperature must be at least 10 °C.

♦

For additional information, refer to the ⇒ operating manual INC 940 .

Perform test:

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

– Switch off ignition and all electrical consumers.

– Check magic eye on batteries with magic eye ⇒ page 5 .

– Switch on tester.

– Connect red terminal „+“ of tester to positive terminal.

– Connect black terminal „-“ of tester to negative terminal.

Note

Ensure test clamps have a good contact!

– Select „In vehicle“ or „Outside vehicle“.

– Select „Warranty test“.

Note

Use the print function of the Midtronics -MCR340- tester if the test results are required for handling warranty applications.

– Select battery type „Standard “ or „AGM“.

– Make a note of the DIN value of the battery as shown on the

battery sticker. If there is no DIN value on the sticker, make a note of the SAE value.

– Enter DIN value in tester and perform battery test ⇒ operating

manual MCR340V .

– If you are using SAE value, access „Miscellaneous“ menu and

change from „DIN“ to „SAE“ ⇒ operating manual MCR340V .

20 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Electrical System, General Information - Edition 07.2010

Note

Always use DIN value from battery sticker! Otherwise, test result will be falsified.

2.6.3 Assessing test results

Results of battery test:

Battery test results Measures

Battery OK None Good - charge Charge battery ⇒ page 55 . Use Incharge Charge battery ⇒ page 55 . Renew battery. Renew battery ⇒ Electrical sys‐

tem; Rep. gr. 27 ; Removing and installing battery

Battery cell defective Renew battery ⇒ Electrical sys‐

tem; Rep. gr. 27 ; Removing and installing battery

2.6.4 Dealing with problems with Midtronics MCR340V- battery tester

Under certain circumstances, the display may show errors or messages according to status.

The most frequent display messages are listed below, together with suggested solutions.

Note

For messages not listed here, please refer to ⇒ operating manual MCR340V .

Display message Measures

No display – Check whether terminals of

System noise – Switch off all electrical con‐

battery tester are firmly con‐ nected to battery terminals.

– Check battery terminals are

tightened according to reg‐ ulations and do not have corrosion.

– Charge battery

⇒ page 55 .

sumers.

– Wait until all electrical loads

monitored by onboard sup‐ ply control unit have switch‐ ed off.

– Remove ignition key.

– Disconnect any suspect

electrical equipment not connected to onboard sup‐ ply as standard.

2. Checking battery 21

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

Wait a few minutes and test again ⇒ page 19 .

Note

If you have performed test at jump-start point and message does not disappear, perform test directly on battery.

2.7 Current draw test

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

Note

♦

Ensure that the correct charging mode is set on the charger so that the current draw test is not falsified.

♦

VAS 5095 A ⇒ page 26

♦

VAS 5900 ⇒ page 30

♦

VAS 5903 ⇒ page 41

To quickly ascertain the state of discharged batteries, the battery current draw test whilst charging helps to determine whether the battery must be replaced or fully recharged.

Note

For battery tester with printer -VAS 6161- , the current draw test must always be performed when the test result „Perform current draw test“ appears on the display.

The current draw test must be carried out when the test result with battery tester with printer -VAS 5097A- is as follows:

1 - Starting output sufficient

2 - Starting output poor

3 - Starting output very poor

4 - Cannot be tested – charge battery and repeat test.

- and when the tester will not switch on (no LED, no printout)

Depending on the test result ⇒ page 13 with battery tester with printer -VAS 5097A- , further procedures or tests may be required before making a final decision on the condition of the battery.

Performing a current draw test whilst charging a battery will quick‐ ly establish whether a partly or fully discharged battery

⇒ page 59 can be recharged to return it to a serviceable condi‐

tion.

22 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

Test requirements

♦ When charging a battery, battery temperature must be at least

≥ +10 °C.

♦ The charger must be capable of outputting a charge current of

at least 30 A, as for example with VAS 5095A, VAS 5900, VAS 5903

♦ The battery's current draw must be measured with a current

pick-up clamp, e.g. VAS 5051B/7, when charging with battery charger -VAS 5095A- . Battery charger -VAS 5900- and bat‐ tery charger -VAS 5903- display the current draw on the unit.

– Connect battery to battery charger and start charging se‐

quence.

– Measure charging current of battery after 5 minutes.

Test result:

If the current draw A is higher than 10 % of the nominal capacity (e.g. > 6.1 A for a 61 Ah battery), fully charge battery and test again.

Note

For Eos with two 6V absorbent glass mat batteries, the charge current must only be 5 % higher than the nominal capacity of the battery. Example for Eos: the 50 Ah battery must have a charge current higher than 2.5 A after 5 minutes of starting the charging

Electrical System, General Information - Edition 07.2010

sequence.

– Fully charge the battery when the charge current is higher than

10 % of the nominal capacity (observe exception for Eos in above note).

– Perform battery test after allowing battery to rest for two hours

⇒ page 9 .

If the charge current, in amperes, lies below 10 % of the nominal capacity after 5 minutes of starting the charging sequence (5 % for the 2 x 6 volt batteries in Eos) (example for 50 Ah battery < 5A), renew battery. For Guarantee and ex-gratia cases: complete battery test sheet and keep it with the battery.

2.8 Checking no-load voltage of battery on stock and stored vehicles

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

Note

♦

The no-load voltage test may only be carried out to assess the condition of the battery on stock and stored vehicles within the framework of prescribed maintenance.

♦

The no-load test serves to determine whether a battery on a stock or stored vehicle requires recharging ⇒ Maintenance tables „Service for stock and stored vehicles“ .

Special tools and workshop equipment required

2. Checking battery 23

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

♦ Hand multimeter -V.A.G 1526 B-

Test conditions

The battery must not have been charged or discharged within the last 2 days.

– Check battery no-load voltage with hand multimeter -V.A.G

1526 B- .

No-load voltage Charge Condition of battery

11.60 V 0 % Discharged, no capacity Heavily discharged ⇒ page 59 .

Measured value Measure to be performed

No-load voltage ≥ 12.5 V No-load voltage OK No-load voltage < 12.5 V Charging battery ⇒ page 25

24 Rep. gr.27 - Starter, current supply, CCS

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ...

3 Charging battery

Electrical System, General Information - Edition 07.2010

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

Caution

To prevent damage to the battery and vehicle, the following should be observed concerning types of battery ⇒ page 1 .

WARNING

Batteries where the magic eye is colourless or light yellow must not be checked or charged. Do not slave/jump start the vehicle!

Danger of explosion when checking and charging or slave/ jump starting

These batteries must be renewed.

3.1 Battery charger -VAS 5095 A-

This chapter describes the basic functions of the battery charger

-VAS 5095 A- . For additional information refer to ⇒ operating

instructions for battery charger -VAS 5095 A- .

Note

♦

The effective charging current can not be read on these units. The charge current must be read externally using a pick-up clamp.

♦

Observe ⇒ operating instructions for battery charger -VAS 5095 A- .

3.1.1 Description of battery charger -VAS 5095 A-

The battery charger -VAS 5095- is suitable for charging all 12V batteries supplied by Volkswagen.

3. Charging battery 25

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Bora 1999 ➤ , Bora Variant 1999 ➤ , CC 2010 ➤ , Eos 2006 ➤ , Golf 199 ... Electrical System, General Information - Edition 07.2010

The battery charger charges without peaks in amperage or volt‐ age. This will not adversely effect the onboard electronics. The battery can remain in the vehicle while it is being charged and need not be disconnected.

Battery charger -VAS 5095 A-

1 - ON / OFF switch (0 = charger OFF)

2 - Charging current indicator (I > 12 A)

3 - Charging current indicator, battery partially charged > 90 %

4 - Maintaining charge; lights up green when battery is fully charg‐ ed

5 - Malfunction indicator

6 - Support mode indicator

7 - Support mode/normal mode changer-over switch

8 - Charger cable, red terminal „+“, black terminal „-“

9 - Battery type change-over switch (on base of charger unit)

3.1.2 Charging battery with battery charger VAS 5095 A-

WARNING

Danger of injury! Observe warning notices and safety regula‐ tions ⇒ page 2 !

Special tools and workshop equipment required

♦ Battery charger -VAS 5095 A-

Caution

Always set battery type 2.4 V/C (volts/battery cell) when charg‐ ing! This applies for all batteries.

Note

The battery must have a temperature of at least 10 °C.

26 Rep. gr.27 - Starter, current supply, CCS