A faulty transmission control module (TCM) most often causes limp mode with the gearbox stuck in one gear, harsh jolts when you select D or R, erratic gear changes, flashing PRND letters and a gearbox or engine warning light. However, the same symptoms are often caused by a low gearbox oil level, a weak battery, a poor earth or a faulty sensor. To test a transmission control module, start by checking the battery and reading the fault codes with a diagnostic tool that can talk to the gearbox control unit, then check the power supply, the connector, the oil and the live data. Below we explain the symptoms, the diagnostic steps and what the most common fault codes mean.
Comfort control module Audi A8 00007898B2 4E0907279E
Vendors's code: 00007898B2
Product code: 00007898B2
Barcode:
Code 39:
ISBN:
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Is Audi A8 the right part for your car?
This listing is for a used, working part for Audi A8: comfort control module, numbers 00007898B2; 4E0 907 279 E / 4E0907279E. Before buying, compare the numbers with the label on the part in your car.
Comfort control module Audi A8
In Audi A8 (2003) the comfort control module collects signals from switches and distributes them to consumers. We sell a used, working unit in good condition.
Symptoms of a fault
- several unrelated functions stop working at the same time,
- wipers or lights switch on by themselves,
- the car does not respond to the remote,
- the tester reports no communication with the module.
It is worth reading the fault codes first, because many body faults come from switches or wiring rather than the module itself.
Numbers on the label
- 00007898B2 - part number
- 4E0 907 279 E / 4E0907279E - VAG group number (OEM)
What this part does
Which functions the module handles depends on the software and equipment of the car; the same physical module may work differently in another car.
In VAG group cars the module is sometimes described as the onboard power supply control unit (Bordnetzsteuergerät); its version depends on the equipment.
Application according to the listing
- Audi A8 - model
- 2003 - year
- Temic - manufacturer
Fitment
Our range also includes other parts for this model with different numbers. Choose by the number on the label, not by the model and year alone.
Questions before buying
| Is the part new? |
|---|
| The part is used but working. The warranty is stated in the product features. |
| Is the part new? |
| We sell it as a used, working part in good condition; the warranty length is given in the offer features. |
Not sure? Write to contact@auto24parts.com and we will help you choose the right part for your car.