VW TRANSPORTER T5 BODY SUPPLY CONTROL MODULE 7H0937049AB BCM 2009

#12

♻ GENUINE VW TRANSPORTER T5 BODY CONTROL MODULE / ONBOARD SUPPLY CONTROL UNIT 7H0937049AB ♻

Genuine used Volkswagen Transporter T5 Body Control Module (BCM) / onboard supply control unit, removed from a 2009 vehicle. This module is part of the vehicle’s central electrical system and controls or coordinates a number of body-related electrical functions such as lighting, indicators, wipers and other onboard electrical consumers.

VW Part Number: 7H0937049AB

VW OE Number: 7H0 937 049 AB

Delphi Number: 28089827

Part Type: Body Control Module / BCM / Onboard Supply Control Unit / Central Electrics Module

System: Vehicle Body Electronics / Central Electrics

Donor Vehicle: Volkswagen Transporter T5

Donor Year: 2009

Manufacturer: Volkswagen / Delphi

Condition: Genuine used part

Compatibility

The strongest verified applications for 7H0937049AB / Delphi 28089827 are:

* Volkswagen Transporter T5 1.9 TDI – 2007–2009

* Volkswagen Transporter T5 2.5 TDI – 2007–2009

* Volkswagen Transporter T5 2.5 TDI 4Motion – selected 2008 applications

* Volkswagen Transporter T5 1.9 TDI – selected 2010 applications

* Volkswagen Caravelle T5 applications using the same BCM specification

A specialist electronic-control-unit repair database identifies 7H0937049AB / Delphi 28089827 specifically on T5 1.9 TDI models from 2007–2009, T5 2.5 TDI models from 2007–2009, 2.5 TDI 4Motion in 2008, and a selected 2010 1.9 TDI application. (ecu.de)

Some T5 specialists advertise this module more broadly for 2003–2009 Transporter / Caravelle, but because Volkswagen used numerous 7H0937049 revisions, matching the exact module number is safer than assuming universal T5 compatibility. (T5 Stylize)

Supersession Information

VAG parts data identifies 7H0937049AB as an onboard supply control unit and records it as superseded by:

7H0937049AE

This means 7H0937049AE is a later replacement reference in the VAG parts system. However, a later supersession should still be checked for coding and vehicle equipment compatibility before installation. (OEM Wolf)

Technical Information

The onboard supply control unit is one of the main electronic modules used to manage the Transporter’s body electrical system.

Depending on vehicle equipment, it can be involved in controlling or coordinating functions including:

* Exterior lighting

* Indicators / turn signals

* Windscreen wipers

* Washer functions

* Interior electrical consumers

* Terminal / ignition-related power distribution

* Central electrical supply functions

* Various convenience and body systems

* Communication with other vehicle control modules

This module should not be confused with the separate comfort / convenience module, which can control other functions such as central locking depending on vehicle configuration.

Vehicle Electrical Network / Diagnostics

The BCM communicates with other electronic control units through the vehicle’s electrical network.

Diagnostic equipment can be used to:

* Read BCM fault codes

* Check individual output circuits

* Perform actuator tests

* Verify communication with the module

* Check coding

* Diagnose lighting and wiper faults

* Verify power and ground supplies

Professional repair specialists specifically associate faults in 7H0937049AB / Delphi 28089827 with issues such as indicator failure and front windscreen wiper failure. (ecu.de)

Common Symptoms of a Faulty BCM

A faulty onboard supply module may cause:

* Indicators not operating

* Windscreen wipers failing

* Intermittent lighting faults

* Exterior lights operating incorrectly

* Electrical consumers failing intermittently

* Multiple unrelated electrical faults

* No communication with the module

* Stored central-electrics fault codes

* Electrical functions working intermittently

* Battery drain in some failure conditions

Because the BCM controls several systems, one internal fault can sometimes affect multiple seemingly unrelated electrical functions.

Important Diagnostic Information

Before replacing the BCM, also check:

* Vehicle battery condition

* Charging voltage

* BCM power supplies

* Earth connections

* Relevant fuses

* Wiring loom

* Electrical connectors

* Water or moisture ingress

* Wiper motor and wiring

* Indicator circuits

* CAN communication

* Stored diagnostic trouble codes

A failed wiper or indicator does not automatically mean the BCM is faulty.

For example, the fault may instead be caused by:

* Fuse failure

* Broken wiring

* Poor earth

* Faulty switch

* Failed motor

* Damaged connector

* Corrosion

Proper diagnosis is strongly recommended before replacing an expensive electronic module.

Installation

Typical replacement may involve:

1. Disconnecting the vehicle battery correctly.

2. Accessing the central electrics / BCM mounting location.

3. Identifying and labelling connectors where necessary.

4. Disconnecting the electrical plugs.

5. Removing the original module.

6. Installing the replacement unit.

7. Reconnecting all plugs securely.

8. Reconnecting the battery.

9. Carrying out diagnostic scanning.

10. Coding / configuring the replacement module where necessary.

11. Testing all affected electrical systems.

Electrical connectors should never be forced, and battery voltage should be stable during coding procedures.

Programming / Coding

Coding can be required when fitting this module to another vehicle.

A T5 specialist selling this exact BCM specifically warns that coding may be required. (T5 Stylize)

Depending on vehicle equipment, fitting a replacement unit may involve:

* Transferring existing coding

* Configuring installed equipment

* Clearing fault codes

* Running output tests

* Checking central-electrics adaptations

Suitable diagnostic equipment such as VCDS, ODIS or equivalent professional equipment is recommended.

Important Compatibility Note

Before ordering, please compare:

* VW OE number: 7H0937049AB

* Delphi number: 28089827

* Connector layout

* Number and position of plugs

* Hardware revision

* Vehicle production year

* Engine / drivetrain specification

* Installed electrical equipment

* Existing module coding

* Original unit against the listing photographs

* VIN where possible

Volkswagen produced many BCM revisions beginning 7H0937049…, and similar-looking modules are not automatically interchangeable.

Relevant variants include numbers such as:

* 7H0937049AA

* 7H0937049AB

* 7H0937049AD

* 7H0937049AE

* Other 7H0937049 revisions

Specialist BCM repair data confirms that these are distinct module references within the Delphi BCM 7H0 family. (Actronics)

The safest fitment wording is:

VW Transporter / Caravelle T5 – selected applications using BCM 7H0937049AB / Delphi 28089827.

Condition

Genuine used Volkswagen / Delphi electronic module.

As a used electronic component, it may show normal signs of previous installation including:

* Surface marks

* Light scratches

* Dust

* Minor marks around connectors

* General age-related cosmetic wear

Please inspect all listing photographs carefully and match every part number with your original unit before ordering.

Electronic modules should be diagnosed and installed by a competent technician, particularly where coding is required.

An ideal genuine replacement for a faulty, damaged or non-communicating VW Transporter T5 body control / onboard supply module 7H0937049AB / Delphi 28089827.