Volkswagen Golf 2007, Golf 2010 User Manual
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Workshop Manual
Golf Variant 2007 ➤
Golf Variant 2010 ➤
Jetta 2005 ➤
Jetta 2011 ➤
Electrical System, General Information
Edition 05.2010
Service
Service Department. Technical Information
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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.
Service
All rights reserved.
No reproduction without prior agreement from publisher.
Copyright © 2010 Volkswagen AG, Wolfsburg D3E801F2B16
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Contents
27 - Starter, current supply, CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Battery A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Fundamentals for batteries A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Types of battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Warning notices and safety regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Battery terminal connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Checking battery A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Testing different battery types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Visual check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Test of colour display of magic eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Battery tester with printer VAS 5097 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Battery tester with printer VAS 6161 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.6 Midtronics MCR340V battery tester (only for USA/Canada) . . . . . . . . . . . . . . . . . . . . . . . . 19
2.7 Current draw test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.8 Checking no-load voltage of battery A (stock and stored vehicles) . . . . . . . . . . . . . . . . . . 24
3 Charging battery A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.1 Battery charger VAS 5095 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2 Battery charger VAS 5900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.3 Battery charger VAS 5903 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.4 Battery charger VAS 5906 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
3.5 Midtronics INC 940 battery charger (only for USA/Canada) . . . . . . . . . . . . . . . . . . . . . . . . 57
3.6 Solar panel VAS 6102 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
3.7 Totally discharged batteries A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
4 Cruise control system (CCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
4.1 Activating and deactivating cruise control system (CCS) . . . . . . . . . . . . . . . . . . . . . . . . . . 65
90 - Gauges, instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
92 - Windscreen wash/wipe system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
1 Washer fluid line hose couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
1.1 Windscreen and rear window washer system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
1.2 Headlight washer system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
2 Hose repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
2.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
2.2 Repairing smooth pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
2.3 Repairing corrugated pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
3 Distinguishing features of jointless wiper blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
94 - Lights, bulbs, switches - exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
1 Operation and safety notes for gas discharge bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
96 - Lights, bulbs, switches - interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
1 12 V socket U5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
1.1 Removing and installing 12 V socket U5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
1.2 Removing and installing socket illumination bulb L42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
2 Cigarette lighter U1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
2.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
2.2 Assembly overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
2.3 Removing and installing cigarette lighter socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
2.4 Removing and installing cigarette lighter illumination bulb L28 . . . . . . . . . . . . . . . . . . . . . . 80
97 - Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
Contents i
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1 Vehicle diagnosis, testing and information system VAS 5051B . . . . . . . . . . . . . . . . . . . . 82
1.1 Connecting vehicle diagnosis, testing and information system VAS 5051B . . . . . . . . . . . . 82
1.2 Connecting vehicle diagnostic tester Bora Model Year 1998 to 2003 . . . . . . . . . . . . . . . . 83
2 Repairs to wiring harnesses and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
2.1 Wiring harness repair set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
2.2 Tool descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
2.3 General notes concerning repairs to vehicle electrical system . . . . . . . . . . . . . . . . . . . . . . 90
2.4 Repairs to wiring harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
2.5 Repairs to contact housings and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
2.6 Releasing and dismantling contact housings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
3 Contact surface cleaning set VAS 6410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
3.1 Using the contact surface cleaning set VAS 6410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
4 Renewing Lambda probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
4.1 Renewing LSF Lambda probe (4-pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
4.2 Renewing LSU Lambda probe (6-pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
4.3 Types of protective tube on uniform Lambda probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
ii Contents
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27 – Starter, current supply, CCS
1 Battery -A-
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Caution
To prevent damage to battery -A- and vehicle, the following
instructions relating to types of battery must be observed
⇒ page 1 .
1.1 Fundamentals for batteries -A-
To ensure long use of battery -A- , the battery must be checked,
serviced and maintained according to the instructions in this man‐
ual.
Apart from supplying energy for starting the engine, battery -Ahas other tasks: it acts as a buffer and supplies electrical energy
to the complete vehicle electrical system.
Note
Refer also to ⇒ Self-study programme No. 234 ; Vehicle batter‐
ies .
1.2 Types of battery
General notes
Caution
The description for the following batteries -A- is for mainte‐
nance-free batteries -A- . Do not remove any stickers and do
not fill battery with distilled water. Only perform a visual check.
Refer to chapter, Checking battery ⇒ page 5 .
1.2.1 Battery -A- with magic eye
Maintenance-free battery -A- with liquid electrolyte (wet battery).
Caution
Do not remove any stickers and do not fill battery with distilled
water. Only perform a visual check. Refer to chapter, Checking
battery ⇒ page 5 .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
1. Battery A 1
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WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
This battery -A- is equipped with a magic eye. The magic eye
shows different colours to provide information concerning the lev‐
el of electrolyte and the charge level of the battery -A- .
Checking colour shown by the magic eye ⇒ page 7
1.2.2 Absorbent glass mat (AGM battery)
Maintenance-free battery -A- containing electrolyte but without a
magic eye.
Lead-acid battery whereby the electrolyte is held in an absorbent
glass mat (AGM). Battery -A- is sealed and fitted with valves.
AGM is the abbreviation for “Absorbent Glass Mat”.
Due to the electrolyte being held in the mat, these batteries -Ado not have a magic eye. Absorbent glass mat batteries are
identified by the abbreviation AGM on the battery -A- .
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 involved in handling of batter‐
ies -A-
Recognition and avoidance of hazards
Batteries -A- can be dangerous. These dangers can be avoided
when the warnings on the battery -A- , in the ⇒ owner's manual
and in ELSA are observed.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2 Rep. Gr.27 - Starter, current supply, CCS
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WARNING
♦ Untrained personnel, e.g. apprentices, trainees etc., may
only work on batteries -A- when supervised by a vehicle
mechanic/foreman or vehicle electrician/foreman.
♦ Acid is highly corrosive. Incorrect handling of batteries -A-
could expose staff to harmful effects caused by electro‐
lyte. Suitable measures must therefore be taken to ensure
that equipment/solutions etc. are available to neutralize
acid burns. A suitable solution is soap solution.
♦ Electrolyte leaks from the battery -A- can cause skin
burns, acid deterioration and corrosion on the vehicle.
This may damage safety relevant components on the ve‐
hicle.
♦ The gas which forms when charging and the gas which
may escape through vent valves is explosive. In extreme
cases, incorrect handling can cause the battery -A- to ex‐
plode as a result of gas leaks.
♦ Batteries -A- whose magic eye is “colourless/light yellow”
have to be replaced. Do not test or charge them and do
not slave/jump start the vehicle. 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. The vehi‐
cle body must be touched before touching the battery -A- .
♦ Only work on batteries -A- in well ventilated and suitable
rooms.
1.3.2 Safety markings on battery -A-
Safety markings on battery -A-
1 - Fire, sparks, naked light and smoking are prohibited when
handling batteries -A- . Avoid sparks as well as electrostatic
discharge when working with cables and electrical units.
Avoid short circuits. For this reason, do not place any tools
on battery -A- .
2 - Wear eye protection before commencing work on battery -
A- .
3 - Keep children away from acid and batteries -A- .
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 - Wherever batteries -A- are handled, there is a risk of explo‐
sion. Charging batteries -A- creates a highly explosive oxy‐
hydrogen gas mixture.
7 - Follow instructions concerning batteries -A- , in ELSA and
in ⇒ owner's manual .
8 - Risk of corrosion: Electrolyte acid is highly corrosive, which
is why protective gloves and eye protection must be worn
when working on battery -A- . The battery -A- must not be
tilted as acid could leak from battery vents.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
1. Battery A 3
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1.4 Battery terminal connection
Caution
To prevent damage to the battery terminal clamps and battery
terminals, the following should be observed:
♦ The battery terminal clamps should only be fitted by hand
and without using force.
♦ Battery terminals should not be coated with grease.
♦ The battery terminal clamps should be fitted so that the
battery terminal is either flush with the clamp or protruding
from it.
♦ Once the battery terminal clamps have been tightened to
the specified torque, the threaded connections should not
be tightened any further.
Prescribed torque for terminal clamps ⇒ Electrical System; Rep.
Gr. 27 of the respective vehicle.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
4 Rep. Gr.27 - Starter, current supply, CCS
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2 Checking battery -A-
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Caution
To prevent damage to battery -A- and vehicle, the following
instructions relating to types of battery must be observed
⇒ page 1 .
2.1 Testing different battery types
2.1.1 Testing battery -A- with magic eye
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Carry out checks in following sequence as follows:
1. Visual check ⇒ page 6
2. Test of colour display of “3-colour” magic eye ⇒ page 7
or “2-colour” magic eye ⇒ page 7
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
3. Battery load test with
♦ Battery tester with printer -VAS 5097 A- ⇒ page 9 .
♦ Battery tester with printer -VAS 6161- ⇒ page 13 .
♦ Midtronics -MCR340V- battery tester (only for USA/Canada)
⇒ page 19 .
4. Depending on the result of the battery load test, “carry out
current draw test” ⇒ page 23 .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 5
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2.1.2 Test of absorbent glass mat (AGM bat‐
tery)
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Carry out checks in following sequence as follows:
1. Visual check ⇒ page 6 .
2. Battery load test with
♦ Battery tester with printer -VAS 5097 A- ⇒ page 9 .
♦ Battery tester with printer -VAS 6161- ⇒ page 13 .
♦ Midtronics -MCR340V- battery tester (only for USA/Canada)
⇒ page 19 .
3. Depending on the result of the battery load test, “carry out
current draw test” ⇒ page 23 .
2.2 Visual check
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
It is essential to first check the external condition of the battery,
the terminals of battery -A- and that battery is seated securely
visually before performing more extensive tests.
Caution
♦ Battery -A- will be damaged if it 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 -A- is securely seated and, if necessary,
tighten securing bolt to specified torque.
Points in the visual check
♦ Damage to housing of battery -A- . Electrolyte can leak out if
the housing is damaged. If battery acid leaks out, serious
damage to the vehicle could be caused. Treat areas of the
vehicle affected by leaked battery acid immediately with acid
neutraliser or a soap solution.
♦ Damage to battery terminals. The necessary contact at the
terminal clamps cannot be guaranteed if the terminals are
damaged. When connecting clamps to terminals, tighten
clamps to torque specified in this workshop manual ⇒ Elec‐
trical system; Rep. Gr. 27 for respective vehicle. If the clamps
are not correctly seated and tightened, the wiring could burn,
which could result in electrical system malfunctions. Which will
cause malfunctions in the electrical system. Therefore it can
no longer be guaranteed that the vehicle will function correctly.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
6 Rep. Gr.27 - Starter, current supply, CCS
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2.3 Test of colour display of magic eye
2.3.1 Test of “3-colour” display (up to 03/08)
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
General information on magic eye
The magic eye provides information concerning the electrolyte
level and the charge level of battery -A- .
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 this is done. The
colour display of the magic eye will be more accurate.
Note
♦
Air bubbles can form below the magic eye particularly if the
battery -A- has been recharged, even if the battery -A- was
charged during normal vehicle operation. These falsify 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 battery's
condition is only possible through a load test ⇒ page 9 .
♦
The magic eye can be located at various positions on the bat‐
tery -A- .
Three different colour displays are possible
♦ “Green”: Battery -A- is charged sufficiently.
♦ “Black”: Battery -A- partly discharged, charge level less than
65 % or completely discharged.
♦ “Colourless/light yellow”: Battery -A- must be renewed.
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
2.3.2 Test of “2-colour” display (from 04/08
onwards)
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 7
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General information on magic eye
For newer batteries -A- from 03/08 onwards, there is no “green”
colour display for charge level indication. The only remaining col‐
ours are “black” or “colourless/light yellow”.
The magic eye provides information concerning the electrolyte
level of the battery -A- .
The charge level of the battery -A- can no longer be determined
by means of 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 this is done. The
colour display of the magic eye will be more accurate.
Note
♦
Air bubbles can form below the magic eye particularly if the
battery -A- has been recharged, even if the battery -A- was
charged during normal vehicle operation. These falsify 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 battery's
condition is only possible through a load test ⇒ page 9 .
♦
The magic eye can be located at various positions on the bat‐
tery -A- .
Three different colour displays are possible
♦ “Black”: Electrolyte level OK.
♦ “Colourless/light yellow”: Electrolyte level too low. The battery
-A- must be renewed.
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
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 -A- when using
battery tester with printer -VAS 5097 A- .
The battery tester with printer -VAS 5097 A- can be used to test/
check the following batteries -A- :
♦ 80 to 499 A: Low-temperature test current according to DIN
(Deutsche Industrie Norm (German Industrial Standard))
1)
♦ 95 to 574 A: Low-temperature test current according to IEC
(International Engineering Consortium)
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
8 Rep. Gr.27 - Starter, current supply, CCS
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♦ 136 to 855 A: Low-temperature test current according to EN/
SAE (European Norm/Standard of Automotive Engineers)
1) Batteries -A- with a low-temperature test current greater than 499 A according
to DIN can be tested using setting for 499 A according to DIN.
For testing, batteries -A- are loaded with a current equivalent to
the starting current of a passenger car. Under this load the battery
-A- is tested and the result of the measurement is printed out.
Note
Observe ⇒ Instruction manual for battery tester with printer -VAS
5097 A- or sticker ⇒ Brief instructions for battery tester with printer
-VAS 5097 A- on battery tester with printer -VAS 5097 A- and the
table for low-temperature test current ⇒ page 11 .
♦ Description of battery tester with printer -VAS 5097 A-
⇒ page 9
♦ Battery load test ⇒ page 9 .
♦ Table: Low-temperature test current ⇒ page 11
♦ Results of battery load test ⇒ page 12 .
♦ Explanations of test printout ⇒ page 13
♦ Evaluation of test result ⇒ page 13 .
2.4.1 Description of battery tester with printer
-VAS 5097 A-
Battery tester with printer -VAS 5097 A-
1 - Green LED “Unit operating”
2 - Red LED “Unit connected with reverse polarity”
3 - Red LED “Battery cannot be tested” Battery -A- has to be
replaced.
4 - Start button
5 - Low-temperature current selection switch
6 - ON/OFF function switch
7 - Selection switch (pick-off point on battery -A- /on jump-start
point)
8 - Paper feed button
9 - Printer
2.4.2 Battery load test
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Special tools and workshop equipment required
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 9
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♦ Battery tester with printer -VAS 5097 A-
Note
Note technical solution ⇒ TS 2012182 for battery tester with
printer -VAS 5097 A- .
Carry out following procedures:
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Note
The temperature of the battery -A- must be at least 10 °C.
– Switch off ignition and all electrical consumers.
– Check magic eye on batteries -A- with magic eye ⇒ page 5 .
– Switch on battery tester with printer -VAS 5097 A- ⇒ page 9 .
– Check low-temperature test current in amperes (A) according
to DIN from details on battery -A- and refer to the table
⇒ page 11 to determine the setting range of battery tester
with printer -VAS 5097 A- .
Note
If the battery -A- values are shown in IEC or EN/SAE units instead
of DIN units, then convert figures using table or using table
⇒ page 11 on battery tester with printer -VAS 5097 A- .
– Select low-temperature test current via low-temperature test
current selection switch ⇒ page 9 .
– Select measuring range (80 to 379 A or 380 to 499 A) with
ON/OFF function switch ⇒ page 9 .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
10 Rep. Gr.27 - Starter, current supply, CCS
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Note
Batteries -A- with a low-temperature test current greater than
499 A according to DIN can be tested using setting for 499 A
according to DIN.
– Connect red terminal clamp (+) to positive terminal of battery
-A- .
– Connect black terminal clamp (-) to negative terminal of bat‐
tery -A- .
Note
♦
Ensure test clamps have a good contact!
♦
Note technical solution ⇒ TS 2012182 for battery tester with
printer -VAS 5097 A- .
– Select point of connection of test terminals with selection
switch ⇒ page 9 .
1 - Connected directly to battery -A- .
2 - Connection to jump start point
– Check that the low-temperature test current given on battery
-A- is correct for the setting on battery tester with printer -VAS
5097 A- .
– Press start test button ⇒ page 9 .
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 battery tester with printer -VAS 5097 A- does not
start (LED does not light up, no printout), recharge battery -A- .
⇒ page 26
– Switch off battery tester with printer -VAS 5097 A- ⇒ 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 results.
♦
The battery tester with printer -VAS 5097 A- needs approxi‐
mately 30 minutes (to cool down) before it is ready for the next
measurement.
2.4.3 Table showing low-temperature test current
Low-temperature test current in A
EN/ SAE IEC DIN
136 – 177 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
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 11
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Low-temperature test current in A
EN/ SAE IEC DIN
346 – 387 245 – 274 204 – 229
388 – 429 275 – 304 230 – 254
430 – 471 305 – 334 255 – 279
472 – 513 335 – 364 280 – 304
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
490 – 499
2)
2) Batteries -A- with a low-temperature test current greater than 499 A according to DIN can be tested using setting for 499 A according
to DIN.
2.4.4 Results of battery load test
Because of the high load on the battery -A- during this test, the
battery voltage drops.
♦ If the battery -A- is OK, the voltage only drops to the minimum
voltage.
♦ If the battery -A- is defective or has a low charge, the battery
voltage 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 results.
♦ The battery tester with printer -VAS 5097 A- requires approx.
30 minutes to cool down before carrying out another test or
testing another battery -A- . This ensures that the results are
not falsified.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
12 Rep. Gr.27 - Starter, current supply, CCS
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2.4.5 Explanations of test printout
1 - Measuring range set on battery tester with printer -VAS
5097 A- .
2 - Diagram, -arrow- indicates condition of battery -A- .
3 - Test result
4 - Voltage that was applied to battery -A- during load test.
5 - Vehicle data and date. Must be completed by test person‐
nel.
Note
♦
The test printout is required for warranty claims.
♦
Perform test once only. Repeating the test falsifies the results.
2.4.6 Evaluation of test result
Printout Measures
Starting output very good Battery -A- OK
Starting output good Battery -A- OK
Starting output sufficient Evaluation by current draw
test ⇒ page 23
Starting output poor Evaluation by current draw
test ⇒ page 23
Starting output very poor Evaluation by current draw
test ⇒ page 23
Cannot be tested – Charge battery -A-
⇒ page 26 and test it
again.
2.5 Battery tester with printer -VAS 6161-
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
It is not necessary to remove or disconnect battery -A- when using
battery tester with printer -VAS 6161- .
The battery tester with printer -VAS 6161- does not load the bat‐
tery -A- any more. It works on the principle of dynamic conduc‐
tance acquisition.
All types of battery are stored in the battery tester with printer VAS 6161- .
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 VW are always
up to date.
Integrated infrared sensor (battery temperature measurement)
improves measurement quality.
A 2D scanner is available as an option to read data directly from
the bar code of the battery -A- .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 13
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Note
Observe the ⇒ operating manual of the battery tester with printer
-VAS 6161- .
♦ Description of battery tester with printer -VAS 6161-
⇒ page 14
♦ Battery test ⇒ page 14 .
♦ Performing maintenance test ⇒ page 16 .
♦ Performing service test ⇒ page 17
♦ Performing warranty test ⇒ page 17
♦ Explanations of test printout ⇒ page 18
♦ Evaluation of test result ⇒ page 18 .
2.5.1 Description of battery tester with printer
-VAS 6161-
Battery tester with printer -VAS 6161-
1 - Internal printer
2 - Operating lever for paper compartment
3 - Paper slot
4 - Display with main menu
5 - Control panel with ON/OFF button
6 - Connection for battery test cable
7 - Card slot for SD card
8 - Infrared sensor (temperature measurement)
9 - Data transmitter for PC
2.5.2 Battery test
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-
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
14 Rep. Gr.27 - Starter, current supply, CCS
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Carry out following procedures:
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Note
The temperature of the battery -A- must be at least 10 °C.
– Switch off ignition and all electrical consumers.
– Check magic eye on batteries -A- with magic eye ⇒ page 5 .
– Switch on battery tester with printer -VAS 6161- ⇒ page 14 .
– Connect red terminal clamp (+) to positive terminal of battery
-A- .
– Connect black terminal clamp (-) to negative terminal of bat‐
tery -A- .
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 17 .
♦ Guarantee test ⇒ page 17 .
Note
♦
The test is completed after about 10 seconds.
♦
The result of the test is printed out by the printer.
♦
The battery tester with printer -VAS 6161- requires no cooling
phase before it is ready for the next measurement.
– Switch off battery tester with printer -VAS 6161- ⇒ page 14 .
– Remove test terminals.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 15
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2.5.3 Performing maintenance test
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Special tools and workshop equipment required
♦ Battery tester with printer -VAS 6161-
Carry out following procedures:
– Select “Maintenance test” in menu.
– Connect scanner.
Note
If no scanner is available, write vehicle identification number on
test printout by hand.
– Scan vehicle identification number.
– Select “On battery terminal” or “On jump start point”.
– Select vehicle type.
– Scan the barcode or select “Type and Manufacturer” manually
from menu.
– Measure temperature above battery -A- . To do this, hold in‐
frared sensor about 5 cm above one battery terminal until
temperature stabilises.
– Start test.
– Print out test protocol.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
16 Rep. Gr.27 - Starter, current supply, CCS
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2.5.4 Performing service test
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Special tools and workshop equipment required
♦ Battery tester with printer -VAS 6161-
Carry out following procedures:
– Select “Service test” in menu.
– Select “On battery terminal” or “On jump start point”.
– Select vehicle type.
– Measure temperature above battery -A- . To do this, hold in‐
frared sensor about 5 cm above one battery terminal until
temperature stabilises.
– Select battery type (Normal, AGM, 2*6 V or Gel).
– Select which standard to use (CCA, JIS, DIN, SAE, IEC or EN).
– Start test.
– Print out test protocol.
2.5.5 Perform guarantee test
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Special tools and workshop equipment required
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 17
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♦ Battery tester with printer -VAS 6161-
Carry out following procedures:
– Select “Guarantee test” in menu.
– Select “In vehicle” or “Outside vehicle”.
– Select “On battery terminal” or “On jump start point”.
– Select vehicle type.
– Measure temperature above battery -A- . To do this, hold in‐
frared sensor about 5 cm above one battery terminal until
temperature stabilises.
– Select battery type (Normal, AGM, 2*6 V or Gel).
– Select battery capacity.
– Start test.
– Print out test protocol.
2.5.6 Explanations of test printout
1 - Type of test
2 - Test result
3 - Measured voltage
4 - Measured cold start value of battery -A-
5 - Nominal cold-start value of battery -A- set on battery tester
with printer -VAS 6161- .
6 - Measured temperature above battery -A-
7 - Installation location of battery -A-
8 - Position of battery terminal set on battery tester with printer
-VAS 6161-
9 - Selected battery type
Note
The test printout is required for warranty claims.
2.5.7 Evaluation of test result
Evaluating battery test results for guarantee and service tests
Battery test results Measures
Battery -A- OK No measure carried out on bat‐
tery -A- .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
18 Rep. Gr.27 - Starter, current supply, CCS
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Battery test results Measures
Battery -A- OK - Recharge. – Charge battery -A-
⇒ page 26 and search for
faults that are causing bat‐
tery to become discharged.
Perform current draw test – Perform a current draw test
⇒ page 23 .
– Charge battery -A-
⇒ page 26 and test it
again.
Replace battery -A- – Disconnect battery -A- and
test it again.
The result “Renew battery” may
be caused by a weak cable con‐
tact.
Battery cell defective - renew. – Renew battery -A- ⇒ Elec‐
trical system; Rep. Gr. 27 .
Check connection. – Connect test clamps directly
to battery -A- , not to jump
start point.
Evaluating battery test results for maintenance test
Battery test results Measures
Battery -A- OK No measures
Charge battery -A- immediately – Charge battery -A-
⇒ page 26 .
Mark as defective. – Mark battery -A- as “defec‐
tive”.
Check tester connection. – Disconnect battery -A- and
test it again.
The result “Check tester con‐
nection” may be caused by a
weak test clamp contact.
Check connection. – Connect test clamps directly
to battery -A- , not to jump
start point.
Noises Wait until measured value ap‐
pears on display.
2.6 Midtronics -MCR340V- battery tester
(only for USA/Canada)
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Note
Observe ⇒ Operating instructions for Midtronics -MCR340V- .
♦ Description of Midtronics -MCR340V- battery tester
⇒ page 20 .
♦ Battery test ⇒ page 20 .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 19
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♦ Dealing with problems ⇒ page 22 .
2.6.1 Description of Midtronics -MCR340Vbattery tester
Batteries -A- in VW vehicles are only allowed to be tested with
battery testers approved by VW. In the USA/Canada, it is per‐
missible to use the Midtronics -MCR340V- battery tester.
Read all the information about safety, setup and operation in the
⇒ operating instructions for the Midtronics -MCR340V- battery
tester and follow the instructions to the letter.
Refer to ⇒ Self-study programme No. 234 ; Vehicle batteries for
more information.
The following charging and analysis procedures apply to all bat‐
teries -A- , 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 Midtronics -MCR340V- battery tester, the display
menu/display buttons, LEDs and the operating procedures de‐
scribed in the ⇒ operating manual of the Midtronics -MCR340Vbattery tester.
Note
Observe and comply with all subsections, remarks and referen‐
ces relating to the vehicle and battery type to be tested.
2.6.2 Battery test
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Special tools and workshop equipment required
♦ Midtronics -MCR340V-
Requirements
– Read description of device ⇒ page 20 .
– Perform a visual check ⇒ page 6 .
– Open bonnet or covers for other installation location of battery
-A- .
– Select battery type (Standard or AGM).
– Remove covers from positive and negative terminals of battery
-A- .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
20 Rep. Gr.27 - Starter, current supply, CCS
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– Use wing covers or other kinds of cover before you start work
in engine compartment or interior.
– Close all doors.
Note
♦
The temperature of the battery -A- must be at least 10 °C.
♦
For additional information, refer to the ⇒ operating manual of
the Midtronics -MCR340V- tester.
Carry out following procedures:
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
– Switch off ignition and all electrical consumers.
– Check magic eye on batteries -A- with magic eye ⇒ page 5 .
– Switch on Midtronics -MCR340V- battery tester ⇒ operating
instructions for the Midtronics -MCR340V- battery tester.
– Connect red terminal clamp (+) to positive terminal of battery
-A- .
– Connect black terminal clamp (-) to negative terminal of bat‐
tery -A- .
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 -A- 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 Midtronics -MCR340- tester and perform
battery test ⇒ Operating manual of Midtronics tester MCR340V- .
– If you are using SAE value, open the “Miscellaneous” menu
and change from “DIN” to “SAE” ⇒ Operating manual Mid‐
tronics tester -MCR340V- .
– Switch Midtronics -MCR340- tester off.
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 21
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– Remove test terminals.
Note
Always use DIN value from battery sticker! Otherwise, test result
will be falsified.
2.6.3 Evaluation of test result
Results of battery test
Battery test results Measures
Battery -A- OK None
Good - charge – Charge battery -A-
⇒ page 26 .
Use Incharge – Charge battery -A-
⇒ page 26 .
Replace battery -A- – Renew battery -A- ⇒ Elec‐
trical system; Rep. Gr. 27 .
Battery cell defective – Renew battery -A- ⇒ Elec‐
trical system; Rep. Gr. 27 .
2.6.4 Dealing with problems Midtronics MCR340V-
Under certain circumstances, the display may show errors or
messages depending on the status of the tester.
The most frequent display messages are listed below, together
with suggested solutions.
For messages not listed here, please refer to ⇒ Operating manual
Midtronics -MCR340V- .
Display message Measures
No display – Check whether test clamps
of Midtronics -MCR340Vbattery tester are firmly con‐
nected to battery terminals.
– Check battery terminals are
tightened according to reg‐
ulations ⇒ Electrical sys‐
tem; Rep. Gr. 27 and do not
have corrosion.
– Charge battery -A-
⇒ page 26 .
System noise – Switch off all electrical con‐
sumers.
– Wait until all electrical loads
monitored by onboard sup‐
ply control unit -J519- have
switched off.
– Remove the ignition key.
– Disconnect any suspicious,
non-standard electrical
equipment from onboard
supply.
– Wait a few minutes and test again ⇒ page 20 .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
22 Rep. Gr.27 - Starter, current supply, CCS
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Note
If you have performed test at jump-start point and message does
not disappear, perform test directly on battery -A- .
2.7 Current draw test
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Ensure that the correct charging mode is set on the charger so
that the current draw test is not falsified.
♦ Battery charger -VAS 5095 A- ⇒ page 27 .
♦ Battery charger -VAS 5900- ⇒ page 31 .
♦ Battery charger -VAS 5903- ⇒ page 43 .
To quickly ascertain the condition of a discharged battery -A- , the
current draw test whilst charging will help to ascertain the condi‐
tion of a discharged battery -A- to establish whether the battery A- 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 5097 A- is as follows:
1 - Starting output sufficient
2 - Starting output poor
3 - Starting output very poor
4 - Cannot be tested – Charge battery -A- and repeat test
5 - Battery tester with printer -VAS 5097 A- does not switch on
(no LED, no printout)
Depending on the test result ⇒ page 13 of the battery tester with
printer -VAS 5097 A- , further procedures or tests may be required
before a final decision can be made on the condition of the battery.
Performing a current draw test whilst charging a battery -A- will
quickly establish whether a partly or fully discharged battery -A-
⇒ page 63 can be recharged to return it to a serviceable condi‐
tion.
Test prerequisites
♦ Temperature of battery -A- must be at least 10 °C when the
battery is being charged.
♦ The battery charger must be able to output at least 30 A of
charge current as in the case of battery charger -VAS 5095
A- / battery charger -VAS 5900- / battery charger -VAS 5903- .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 23
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♦ The current draw on the battery -A- must be measured with a
pick-up clamp ( 100 A pick-up clamp -VAS 5051B/7- ) when
battery charger -VAS 5095 A- is used for charging.
♦ Battery charger -VAS 5900- and battery charger -VAS 5903-
display the current draw.
Carry out following procedures:
– Connect battery -A- to battery charger and start charging proc‐
ess.
– Measure charge current of battery -A- after 5 minutes.
Test result
The charge current must be more than 10 % of the nominal ca‐
pacity 5 minutes after starting the charging sequence.
Example:
For a 60 Ah battery -A- , the charge current must the higher than
6 A five minutes after charging has been started.
– Fully charge battery -A- when the charge current is higher than
10 % of the nominal capacity.
– Perform battery load test after allowing battery -A- to rest for
two hours ⇒ page 9 .
If charge current is below 10% of rated capacity five minutes after
start of charging (example for a 60 Ah battery -A- : less than 6 A),
renew battery -A- ⇒ Electrical system; Rep. Gr. 27 . For guar‐
antee and ex-gratia cases, complete battery test sheet and keep
it with battery -A- .
2.8 Checking no-load voltage of battery -A(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 -A- on stock and stored vehicles within
the framework of prescribed maintenance.
♦
The no-load test is used as a criterion for assessing whether
a battery -A- on a stock or stored vehicle requires recharging
⇒ Maintenance tables “Service for stock and stored vehicles” .
Special tools and workshop equipment required
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
24 Rep. Gr.27 - Starter, current supply, CCS
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♦ Hand multimeter -V.A.G 1526 B-
Test conditions
The battery -A- must not have been charged or discharged within
the last 2 days.
Carry out following procedures:
– Check no-load voltage of battery -A- with hand-held multime‐
ter -V.A.G 1526 B- .
Test result
No-load voltage Charge Condition of battery -A-
11.60 V 0 % Discharged, no capacity. Heavily discharged
⇒ page 63 .
Measured value Measure to be performed
No-load voltage greater than or
equal to 12.5 V
No-load voltage OK
No-load voltage less than 12.5V– Charge battery -A-
⇒ page 26 .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
2. Checking battery A 25
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3 Charging battery -A-
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Caution
To prevent damage to battery -A- and vehicle, the following
instructions relating to types of battery must be observed
⇒ page 1 .
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
3.1 Battery charger -VAS 5095 A-
WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
WARNING
Do not test or charge batteries -A- whose magic eye is “col‐
ourless/light yellow”. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/
jump starting
These batteries -A- must be replaced.
Note
♦
The effective charge current cannot be read on this battery
charger -VAS 5095 A- . Charge current must be read exter‐
nally using a pick-up clamp ( 100 A pick-up clamp -VAS 5051B/
7- )
♦
Observe ⇒ Operating instructions for battery charger -VAS
5095 A- .
♦ Description of battery charger -VAS 5095 A- ⇒ page 27 .
♦ Charge battery -A- ⇒ page 27 .
♦ Charging totally discharged battery -A- ⇒ page 28 .
Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤ , Jetta 2011 ➤
Electrical System, General Information - Edition 05.2010
26 Rep. Gr.27 - Starter, current supply, CCS
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