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 8E0959433CD
Vendors's code: 8E0959433CD
Product code: 8E0959433CD
Barcode:
Code 39:
ISBN:
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Part number 8E0959433CD - is it the right choice?
This listing is for a used, working part for Audi: comfort control module, numbers 8E0959433CD. Before buying, compare the numbers with the label on the part in your car.
Comfort control module Audi
The comfort control module controls selected body consumers. The unit offered applies to: Audi; it is used, working and in good condition.
Application according to the listing
- Audi - model
Numbers on the label
- 8E0959433CD - VAG group number (OEM)
Compatibility with your car
For this model we offer several parts that differ in their numbers. The number on the label decides, not the model name alone.
What a fault looks like
- random errors appear in the diagnostic memory,
- the module gets hot or smells burnt,
- the car does not enter full sleep mode,
- a selected body function does not work although the switch is fine.
It is worth reading the fault codes first, because many body faults come from switches or wiring rather than the module itself.
What this part does
In many models the module communicates with other control units over the bus, so after replacement it may need coding or matching to the car. In VAG group cars the module is sometimes described as the onboard power supply control unit (Bordnetzsteuergerät); its version depends on the equipment.
Questions and answers
| Can a part with a different number fit as well? |
|---|
| Sometimes it can, but we do not assume that listings are interchangeable. Compare all numbers with the label on your part or ask us. |
| How can I check whether this part fits my car? |
| Compare the model, year and the numbers of the part fitted in your car with the numbers in the description. You can also send us a photo. |
| Why does the number have several spellings? |
| The same label number is written with spaces, dashes or as one string. We give both forms so that it is easier to find. |
Send fitment questions to contact@auto24parts.com - give the model, year and the number from the label.