Volkswagen Phaeton User Manual

Service.

Self-Study Programme 273

Phaeton Convenience and Safety Electronics

Design and Function

Open sesame - thanks to a new system for entry and start authorisation, the Phaeton can be accessed without actively using a key (1). The opening request is detected via an aerial in the outer door handle (2) and authorisation is identiﬁed via a control unit (3). The opening request is detected via an aerial in the outer door handle (2) and authorisation is identiﬁed via a control unit (3).

"Yes, accepted!"

Enty system to rear control unit: Please open!

Rear CU to door control unit: unlock!

Aerial CU to entry and start system: Authorisation OK?

Please enter!

"All clear, unlocked!"

"OK!"

"Request received!"

"Hey aerial: opened!"

Further information about the Phaeton can be found in the following Self-Study Programmes:

● Self-Study Programme 250: The Phaeton - W12 - Engine Management

● Self-Study Programme 270: The Phaeton

● Self-Study Programme 271: The Phaeton - Heating and Air Conditioning System

● Self-Study Programme 272: The Phaeton - Onboard Power Supply

● Self-Study Programme 274: The Phaeton - Infotainment System

● Self-Study Programme 275: The Phaeton - Air Suspension with Dynamic Damping

● Self-Study Programme 276: The Phaeton - Automatic Proximity Control

● Self-Study Programme 277: The Phaeton - Running Gear

This Self-Study Programme explains the design

and function of new developments.

The contents are not updated.

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NEW Important

Note

Please always refer to the relevant Service Literature for all

inspection, adjustment and repair instructions.

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Entry and start authorisation . . . . . . . . . . . . . . . . . . . . . . . . 8

Convenience system central control unit . . . . . . . . . . . . . 24

Roof module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Multi-function steering wheel. . . . . . . . . . . . . . . . . . . . . . . 52

Sound system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Parking aid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Test your knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Introduction

This Self-Study Programme provides you with an overview of the complex convenience and safety electronics in the Phaeton. It provides information, for instance, about:

- the new solar sliding/tilting roof with road speed-dependent wind deﬂector

- the new windscreen wiper system with two separate, electronically controlled motors

- the new orientation light for safe entering and exiting in the dark

- a parking aid that warns against obstacles not only visually, but also acoustically

- seats adjustable in all directions with air conditioning memory and massage function

- a sound system specially tuned to the car interior

- the multi-function steering wheel to operate the main functions

- the new system for entry and start authorisation without the use of a key

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Introduction

System overview of convenience and safety electronics

Dash panel insert (Gateway)

Door control unit, driver's side

Control unit for entry and start authorisation

Door control unit, rear left

Steering column electronics control unit

Door control unit, rear right

Roof electronics control unit

Control unit for air conditioning system

Wiper motor control unit (master)

Front central display and control unit control unit

Onboard power supply control unit

Control unit for air conditioning system

Slave

Door control unit, front passenger's side

Legend

Control unit for tyre pressure monitoring

Drive Train CAN bus

Convenience CAN bus

Seat adjustment (with memory) control unit, driver

Bootlid control unit

Central control unit for convenience system

Seat adjustment (with memory) control unit, front passenger

Rear central display and control unit control unit

Seat adjustment (with memory) control unit, rear

Parking aid control unit

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Infotainment CAN bus

CAN databus

Component Designation in

current ﬂow diagram

Onboard power supply control unit J 519 09 SSP 272

Roof electronics control unit J 528 38 SSP 273

Gateway in dash panel insert J 533/J 285 19/17 SSP 273

Bootlid control unit J 605 via 46 SSP 273

Convenience system central control unit J 393 46 SSP 273

Entry and start authorisation relay J 518 05 SSP 273

Climatronic control unit J 255 08 SSP 271

Steering column electronics control unit J 527 16 SSP 273

Parking aid control unit J 446 76 SSP 273

Tyre pressure monitor control unit J 502 65 SSP 270

Seat adjustment (with memory) control unit, driver J 136 36 SSP 273

Seat adjustment (with memory) control unit, front passenger

Seat adjustment (with memory) control unit, rear J 522 66 SSP 273

Door control unit, driver's side J 386 via 46 SSP 273

J 521 06 SSP 273

Address word for selfdiagnosis

Other information

Door control unit, front passenger's side J 387 via 46 SSP 273

Door control unit, rear left J 388 via 46 SSP 273

Door control unit, rear right J 389 via 46 SSP 273

Wiper motor control unit (master) J 400 68 SSP 273

Windscreen wiper control unit, front passenger's side (slave)

Control unit, front information display and operating unit

Rear information display and operating unit control unit

J 584 via 68 SSP 273

J 523 07 SSP 274

J 524 27 SSP 274

Entry and start authorisation

Complete overview

The adjacent diagram provides an overview of the components involved in the system for entry and start authorisation.

Gear change mechanism with selector lever lock and button for entry and start authorisation

Entry and start authorisation switch

Electro-mechanical steering column lock

Rear aerials in the bumper

Interior aerials

Outer door handles with electronics

Ignition key with radio-wave remote control

Entry and start authorisation relay

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Entry and start authorisation

When suitable equipment is available, the convenience functions for the entry and start authorisation system ( Ke yless S tart Exit and S ecurit y System) make it possible to lock and unlock the vehicle and to switch the engine on and off by radio-wave remote control without actively using the ignition key.

The system is offered in two equipment variants:

Basic equipment (standard equipment)

●

Convenience equipment (optional)

●

Overview of equipment variants

Components Basic equipment Convenience

equipment

Entry and start authorisation switch X X

Terminal control (Terminal 15SV, 15, 75, 50)* X X

Immobiliser (Immobiliser III) X X

Radio-wave remote control (RRC) for central locking X X

Electro-mechanical steering column lock activation (ESL) X X

Button for entry and start authorisation X

Interior and exterior aerials X

Central locking button in the outer door handles X

Proximity sensors X

Transponder for Immobiliser III and entry and start authorisation

Anti-theft alarm system X

Interior monitor X

*Terminal 15SV: Power supply of electrical equipment required for start

Terminal 15: Power supply ignition "on" Terminal 75x: Power supply/relief relay Terminal 50: Power supply starter/solenoid

Basic equipment components

Entry and start authorisation switch

Reader coil

Gate selector lever P/N signal*

Electro-mechanical steering column lock

* Clutch pedal switch for manual gearbox

Ignition key with radio-wave remote control

Engine control unit (rpm)

Entry and start authorisation relay

Gearbox control unit

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Basic equipment for vehicle entry and starting the engine

The vehicle is unlocked using the unlocking button on the ignition key with radio-wave remote control (RRC). To unlock the steering column, the ignition key must be inserted into the entry and start authorisation switch. By means of the immobiliser (coil) in the entry and start authorisation switch, a request is sent to the entry and start authorisation relay for ignition key authorisation. If the control unit makes a positive identiﬁcation, the steering column is unlocked.

Turning the ignition key in the entry and start authorisation switch switches Terminals 15, 75(X) and 15SV. Further turning (Terminal 50 on) starts the engine, providing the following conditions are met:

P/N signal (automatic gearbox)

●

Clutch applied (manual gearbox).

●

If there is radio interference, or the vehicle or ignition key battery has discharged, the vehicle may be entered using the mechanical emergency lock cylinder in the driver's door or in the bootlid.

Entry and start authorisation

Ignition key with radio-wave remote control

The radio-wave remote control functions in the usual way: to unlock the vehicle door, the unlock button must be pressed on the radio-wave remote control. The control unit for entry and start authorisation evaluates the radio signals. The convenience system central control unit activates the standard functions for the central locking system.

Unlocking button

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Immobiliser (Immobiliser III)

The immobiliser also functions as before together with the entry and start authorisation switch, which carries the reader coil, and the engine control unit.

Entry and start authorisation switch

The operating concept for the entry and start authorisation switch has been very slightly changed. The positions are:

Off = ignition/engine off

●

Zero = Automatic reset of the

●

ignition key after switching on the engine

On = ignition on

●

Start = engine on

●

Reader coil

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Entry and start authorisation switch

Select

Zero

Switch positions for entry and start authorisation

Start

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Electrical release disable control unit

The electrical release disable control unit ensures that the ignition key cannot be inadvertently removed from the entry and start authorisation switch.

Gate selector lever P signal

The ignition key cannot be removed while

the ignition is on (Terminal 15 on) and

●

if the gate selector lever for the automatic

●

gearbox is not in P position.

Dash panel insert

Entry and start authorisation relay

Gearbox control unit

Entry and start authorisation switch

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Each key ﬁts mechanically into the entry and start authorisation switch and can be turned. Once the ignition key has been authorised (transponder), it is enabled by the immobiliser (IM III).

Entry and start authorisation

Electro-mechanical steering column lock (ESL)

This is an electro-mechanical version of the conventional mechanical steering column lock, which means that it has an electrical interface to the entry and start authorisation relay and a mechanical interface to the steering column.

Entry and start authorisation relay

The ESL is encoded and activated by means of the entry and start authorisation relay. When the key is inserted or withdrawn, the steering column is locked or unlocked by means of the entry and start authorisation relay. The steering column is supplied with voltage for this procedure only, otherwise the ESL has no voltage (deenergised). The ignition can only be activated when the steering column is unlocked.

Electro-mechanical steering column lock

Entry and start authorisation switch

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Soft start

The soft start is initiated via the drive train CAN databus between the entry and start authorisation relay and the engine control unit.

If the start position (Terminal 50 on) in the entry and start authorisation switch is ﬂicked, the starter stays in the ON position until the engine is running. To protect the starter and avoid unnecessary noise, the start position of the starter is only activated until the engine has reached idling speed even if the starter is activated for a longer period of time.

Emergency start

If the onboard power supply battery has discharged, an emergency start is possible when the engine is not running by means of the battery management control unit and the entry and start authorisation relay.

The engine control unit receives this message from the engine speed sender and transmits the information to the entry and start authorisation relay, giving the command to shift the starter out of position (Terminal 50 off).

The entry and start authorisation relay switches the following relays:

- Relay Terminal 15: voltage supply

- Relay Terminal 15 SV: voltage supply

- Relay Terminal 75X: voltage supply

- Relay Terminal 50: voltage supply

Relay

Entry and start authorisation relay

Dash panel insert

Engine control unit

Entry and start authorisation switch

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Please refer to Self-Study Programme 272 of "The Phaeton - Onboard Power Supply" for more detailed information about battery management.

Entry and start authorisation

Additional convenience equipment functions

Thanks to the additional convenience equipment functions, the ignition key with radio-wave remote control (RRC) is required to open and lock the vehicle, but it no longer needs to be activated. The engine can also be started and switched off without actively operating the ignition key using the authorised transponder.

The additional functions of the convenience equipment are as follows:

Opening the vehicle without actively operating the ignition key with the authorised transponder

●

Starting the engine by means of a button for entry and start authorisation without actively operating

●

the ignition key with the authorised transponder Locking the vehicle without actively operating the ignition key with the authorised transponder

●

Convenience equipment components

Button for entry and start authorisation

Electro-mechanical steering column lock

Exterior aerials

Interior aerials

Aerial

Sensor

Outer door handle with electronics

Door control unit

Entering the vehicle using the convenience equipment

If the user approaches the vehicle with an authorised ignition key, touching the outer door handle with the entry and start authorisation relay transmits an inductive request to the transponder in the ignition key via the exterior aerial in the door handle. If the control unit recognises the ignition key as authorised for entry, it transmits this information to the convenience system central control unit. The convenience system central control unit gives the door control unit the command to unlock the requested vehicle door. The door control unit unlocks the vehicle door.

It is possible to enter the car using any door, opening either a single door or all of the doors, depending on the coding.

If the control unit for entry and start authorisation fails to function, the vehicle door can be unlocked via the emergency lock cylinder in the door lock on the driver's side. The bootlid can be unlocked by means of the emergency lock cylinder in the bootlid (concealed in the VW emblem).

Ignition key with radio-wave remote control and transponder

Entry and start authorisation switch

Relay

Entry and start authorisation relay

Engine control unit

Gearbox control unit

Convenience system central control unit

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Entry and start authorisation

Aerials

1 R135 aerial each at front and rear

Interior switch recess aerial R138

Centre armrest aerial R139

Rear shelf aerial R137

1 aerial in each bumper R136

1 R134 aerial each at front and rear

Tunnel aerial R139

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Interior aerials

The interior aerials detect an ignition key with authorised transponder in the vehicle interior for the starting cycle, vehicle operation and locking procedure. The interior aerial range extends without interruption throughout the entire vehicle interior.

The detection range for the interior aerials does not overlap with the detection range for the exterior aerials.

Exterior aerials

The exterior aerials detect an ignition key with authorised transponder for the locking and unlocking procedure. The position of the ignition key with authorised transponder can be allocated speciﬁcally to the driver's side, front passenger's side or to the bootlid.

The exterior aerials have a range of approximately 1.50 m radiating from the place at which they each operate - vehicle doors and bootlid - at a height of 0.1 m to 1.8 m.

Exterior aerial detection range

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Entry and start authorisation

Outer door handles with electronics

If convenience equipment is ﬁtted, the aerials, sensors and central locking buttons are located in all outer door handles and may be used to open and close the vehicle doors without actively using the ignition key with radio-wave remote control:

Aerial Capacitive sensor

one aerial on each of the driver's side and

●

front passenger's side for entry and start authorisation R134, R135* one sensor on each vehicle door for contact on

●

the driver's side G415, G417 and front passenger's side G416, G418 one button on each vehicle door for central

●

locking on the driver's side E369, E371 and front passenger's side E370, E372.

*The aerials in the outer door handles should be regarded as

a single aerial per vehicle side (front and rear).

Central locking button

Driver's side and front passenger's side aerials for entry and start authorisation

By means of the aerial in the ignition key with radio-wave remote control and authorised transponder, an encoded signal is transmitted to the aerial in the outer door handle, thus inducing voltage in the aerial. This message is transmitted to the entry and start authorisation relay, which in turn evaluates the signal.

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Aerial (coil)

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Sensors for contact on the driver's side and front passenger's side

If a hand approaches the outer door handle, the capacitance of the sensor in the outer door handle changes. The entry and start authorisation relay recognises the change in the capacitance of the sensor as proximity to the outer door handle or as a request to enter the vehicle.

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Buttons for central locking on the driver's side and front passenger's side

Pressure on the central locking button initiates an inductive request through the entry and start authorisation relay to the ignition key with radiowave remote control and transponder. If the ignition key is recognised as authorised and outside the vehicle but within the range of the vehicle, the command is enabled to lock the vehicle.

Capacitive sensor

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Hand operated switch

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Entry and start authorisation

Starting the engine without an ignition key

For this function the ignition key with authorised transponder need not be inserted into the entry and start authorisation switch. It must, however, be located inside the vehicle interior in order to initiate an inductive request via the interior aerials when the button for entry and start authorisation is moved to the ﬁrst engaging position. The ignition key gives an encoded response to the entry and start authorisation relay. If the ignition key is identiﬁed as authorised, the electro-mechanical steering column lock (ESL) is unlocked and the NO contact activated when the ﬁrst stage of the button for entry and start authorisation is activated. If the button is then moved to the ﬁrst engaging position, the ignition is switched on.

Switching off the engine without an ignition key

The engine can also be turned off with the button for entry and start authorisation. To do this, move the button for entry and start authorisation to the second engaging position by pressing it once.

Gear change mechanism with selector lever lock

Button for entry and start authorisation

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Locking the vehicle without an ignition key

Activating a central locking button (ﬁtted to all outer door handles) initiates a request for a valid ignition key with authorised transponder in the exterior of the vehicle. The ignition key transmits a response to the entry and start authorisation relay. Once the ignition key has been positively identiﬁed, the vehicle door is locked via the convenience system central control unit.

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Learning-in the system for entry and start authorisation

As the system contains the immobiliser,

If the vehicle is locked and a second ignition key with authorised transponder is still located in the vehicle interior, the latter is disabled for start authorisation and the vehicle is locked!

the entry and start authorisation relay,

●

electro-mechanical steering column lock (ESL)

●

the ignition key with radio-wave remote

●

control and the engine control unit

●

have to match one another. This is carried out at the end of the production line or during servicing using the VAS 5051 Diagnostic Testing and Information System.

In order to provide better anti-theft protection it is only possible to change just one of the four components; otherwise the system must be subjected to a learn-in process if new components are ﬁtted.

The system for entry and start authorisation has self-diagnostic capability via the addresses

05 Control unit for entry and start authorisation and

●

25 Immobiliser III (diverted to 05).

●

Convenience system central control unit

The convenience system central control unit monitors and controls the following functions:

central locking

●

unlocking the fuel ﬁller ﬂap

●

window regulators

●

interior monitor

●

anti-theft alarm system

●

tilt sensor

●

rear lighting

●

bootlid light

●

control unit activation for the

●

bootlid rear window heater (refer to

●

Self-Study Programme 272 "The Phaeton Onboard Power Supply") bootlid lock control with automatic closing

●

Convenience system central control unit

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Rear shelf

Central locking (CL) system

The central logic of the central locking system for the doors and bootlid is stored in the convenience system central control unit. The functions are triggered by the entry information and the commands are transmitted to the door control units and the bootlid control unit.

In the case of vehicles with standard equipment, the central locking is activated as before by using the button on the ignition key with radio-wave remote control. In the event of a fault the vehicle can be locked and unlocked by using a mechanical emergency lock cylinder in the driver's door.

Functional sequence

The door control units provide information via the convenience CAN databus. The convenience system central control unit evaluates this information and controls the central locking functions. The door control units evaluate the messages from the convenience system central control unit and activate the motors for the central locking.

In the convenience equipment of the system for entry and start authorisation, the convenience system central control unit receives the central locking command from the entry and start authorisation relay.

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