Volkswagen Vw Transporter Caravelle T5 2003-2010 Comfort convenience body module

#85

Genuine used Volkswagen Transporter T5 / Caravelle T5 comfort convenience control module / central convenience ECU, suitable for selected 2003–2010 vehicles depending on the exact part number and vehicle equipment specification.

This electronic module forms part of the vehicle’s convenience and body-electrical system and is responsible for controlling and coordinating various functions such as central locking, remote locking, alarm-related functions and other convenience equipment depending on the vehicle specification.

Part Type: Comfort Convenience Control Module / Convenience ECU

Alternative Names: Comfort Module / Convenience Module / Central Convenience Control Unit / Body Convenience Module

System: Vehicle Convenience / Central Locking System

Vehicle: Volkswagen Transporter / Caravelle T5

Years: 2003–2010 – selected applications

Manufacturer: Volkswagen / VAG

Condition: Genuine used electronic component

Compatibility

Suitable for selected:

* Volkswagen Transporter T5 – 2003–2010

* Volkswagen Caravelle T5 – 2003–2010

* Volkswagen Multivan T5

* Volkswagen California / Camper T5

* Volkswagen Shuttle

* Transporter Panel Van

* Kombi / passenger versions

* Selected platform / chassis-cab versions

Common T5 convenience-module number families include:

7H0959433

7H0959433B

with numerous additional software/configuration suffixes.

Some early T5 applications can also be found with other convenience-module references such as:

6Q0959433E

The complete number printed on the module must be compared with the original unit.

Important – Not the Same as the Main BCM

The T5 comfort/convenience module should not automatically be confused with the later-style/main Body Control Module (BCM).

For example, T5/T5.1 vehicles can also use BCM references from the:

7H0937xxx

number family.

The convenience control unit and BCM perform related body-electrical functions but are not automatically the same component.

For eBay search purposes, buyers may use terms such as:

* Comfort Control Module

* Convenience Module

* Convenience ECU

* Central Convenience Module

* Body Module

* Central Locking Module

but the actual VW part number should determine compatibility.

Technical Information

The convenience control module acts as an electronic control centre for selected vehicle comfort and locking functions.

Depending on the vehicle’s factory equipment, the module can be involved with:

* Central locking

* Remote central locking

* Door lock operation

* Rear door / tailgate locking

* Alarm system

* Interior monitoring

* Convenience functions

* Electric sliding-door related functions on equipped vehicles

* Vehicle security/convenience communication

The exact functions depend heavily on the module’s software and the vehicle’s original PR-code specification.

Central Locking System Information

One of the main functions associated with the T5 convenience module is central locking.

The system communicates with or controls components such as:

* Front door lock actuators

* Sliding-door locking mechanisms

* Rear barn-door or tailgate lock

* Remote-control system

* Alarm equipment where fitted

* Door-position information

A problem within the convenience module can therefore potentially affect several doors or functions simultaneously.

Vehicle Specification / PR-Code Information

This is particularly important for this component.

Volkswagen produced numerous versions of the T5 convenience control unit according to the vehicle’s factory equipment.

Different modules can be configured for vehicles with:

* Standard central locking

* Remote central locking

* Anti-theft alarm

* Interior monitoring

* Rear tailgate

* Rear barn doors

* Electric sliding door

* Twin electric sliding doors

* Different remote-control frequencies

* RHD or LHD configurations

Therefore, two Volkswagen Transporters from the same year with the same engine may still require different convenience modules.

Software Variant Information

With these modules, matching only the large base number may not be sufficient.

For example:

7H0959433B

exists with numerous additional VW software/configuration codes.

These variations correspond to different vehicle equipment combinations.

For this reason, buyers should compare all numbers and codes printed on the original module, not just 7H0959433B.

Common Symptoms of a Faulty Convenience Module

Possible symptoms can include:

* Central locking not working

* Remote locking not operating

* Doors intermittently locking or unlocking

* One or more doors not responding correctly

* Vehicle locking and immediately unlocking

* Alarm system behaving incorrectly

* Rear door/tailgate locking problems

* Sliding-door electrical functions behaving incorrectly

* Interior convenience functions malfunctioning

* Intermittent electrical problems

* No communication with convenience control module

* Stored convenience-system fault codes

Symptoms vary according to the vehicle’s equipment.

Important Diagnostic Information

Before replacing the module, professional diagnosis is strongly recommended.

Check:

* Vehicle battery condition

* Charging voltage

* Relevant fuses

* Power supply to the module

* Earth connections

* Wiring harness

* Electrical connectors

* Door wiring

* Door-lock actuators

* Sliding-door wiring/contact plates

* Rear-door/tailgate wiring

* Water/moisture damage

* Stored diagnostic fault codes

A wiring or door-lock problem can sometimes produce symptoms that appear to indicate a failed control module.

Water / Moisture Damage

When diagnosing any used body-electrical control unit, inspect both the module and its installation area for evidence of:

* Water ingress

* Moisture

* Green corrosion

* Oxidised terminals

* Damaged connector pins

Installing another module without correcting an existing water-ingress problem can result in repeated electrical failure.

Door Wiring Diagnosis

If only one door is malfunctioning, investigate that door before automatically replacing the convenience module.

Check:

* Door lock actuator

* Door wiring loom

* Door-to-body wiring

* Sliding-door contacts

* Electrical connectors

* Microswitches inside the lock mechanism

A module fault becomes more plausible where several related convenience functions are affected, but proper diagnostic testing should still be carried out.

Diagnostic Scanning

A suitable VAG-compatible diagnostic system such as VCDS or equivalent professional equipment can be useful for:

* Reading stored fault codes

* Checking module communication

* Viewing relevant measuring values

* Checking door/lock status

* Testing selected outputs

* Identifying coding/configuration information

Where possible, record the coding and identification information from the original module before removing it.

Programming / Coding

Coding / configuration may be required when installing a replacement convenience module.

This is particularly important with the T5 because the module variant is linked to the vehicle’s equipment specification.

The replacement unit may need to correspond correctly with features such as:

* Central locking

* Remote locking

* Alarm

* Interior monitoring

* Sliding-door equipment

* Rear-door configuration

* RHD/LHD specification

* Remote-control frequency

Where possible, the original module’s coding/configuration should be recorded before replacement.

Professional installation and diagnostic equipment are recommended.

Remote Key Information

Depending on the replacement procedure and vehicle specification, remote-control keys may require checking or re-synchronisation/adaptation after work on the convenience system.

This should not be confused with replacing the engine immobiliser system.

Correct procedures depend on the exact module and vehicle configuration.

Installation

Before installation:

* Disconnect the battery as appropriate

* Record original module coding where possible

* Compare complete part numbers

* Compare software/configuration suffixes

* Compare connectors

* Inspect connector pins

* Check wiring for damage

* Check for moisture/corrosion

After installation:

* Connect all plugs securely

* Reconnect the vehicle electrical system correctly

* Carry out diagnostic scanning

* Code/configure the module where required

* Check remote central locking

* Check each door lock

* Check rear-door/tailgate operation

* Check alarm functions where fitted

* Check sliding-door functions where applicable

* Clear and recheck relevant fault codes

Important Compatibility Note

Please compare before ordering:

* Complete VW OE part number

* Base number

* Suffix letter

* Software/configuration code

* RHD/LHD specification

* Electrical connectors

* Central-locking specification

* Remote-control specification

* Alarm system

* Interior monitoring

* Electric sliding-door equipment

* Rear tailgate/barn-door configuration

* Vehicle PR codes

* Vehicle production date

Do not purchase solely because your vehicle is a Volkswagen Transporter T5 or Caravelle 2003–2010.

VW used numerous versions of the convenience control module during this period.

The safest compatibility check is to match every number/code on the original module and, where necessary, verify fitment using the vehicle VIN.

Condition

Genuine Volkswagen used electronic control module.

As a used electrical component, normal signs of previous use may include:

* Surface marks

* Dust

* Light scratches

* General installation/removal marks

Please inspect all listing photographs carefully, particularly the:

* Part-number label

* Software/configuration codes

* Electrical connectors

* Connector pins

* Module casing

* Mounting points

The buyer is responsible for ensuring that the replacement module is compatible with their vehicle and arranging any coding/configuration required.

Only the module and accessories clearly shown in the listing photographs are included.

Any identifying colour/security markings applied to the part must remain intact in the event of a return.

Ideal genuine replacement for a faulty or damaged Volkswagen Transporter T5 / Caravelle comfort convenience control module, provided the complete OE number, software variant and vehicle equipment specification match the original unit.