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 A3 8P0959433B 5DK00858345
Vendors's code: 8P0959433B
Product code: 5DK00858345
Barcode:
Code 39:
ISBN:
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Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
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Part number 8P0959433B - is it the right choice?
This listing is for a used, working part for Audi A3: comfort control module, numbers 8P0959433B; 5DK00858345. Before buying, compare the numbers with the label on the part in your car.
Comfort control module Audi A3
For Audi A3 (2005) we offer a used comfort control module that you can match by the numbers on the list. It is working and in good condition.
How this part works
The module electronics are exposed to moisture and contact corrosion, especially when fitted in the scuttle, under the dashboard or near the doors.
In VAG group cars the module is sometimes described as the onboard power supply control unit (Bordnetzsteuergerät); its version depends on the equipment.
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.
Symptoms of a fault
- electrical faults appear after rain or a car wash,
- some functions work only intermittently,
- the system returns to normal after the battery is disconnected,
- warning lights on the dashboard come on for no reason.
Remember that the module may need coding or adaptation after replacement - check this for your model.
Vehicle and manufacturer
- Audi A3 - model
- 2005 - year
- Hella - manufacturer
Numbers on the label
- 8P0959433B - VAG group number (OEM)
- 5DK00858345 - manufacturer number (Hella)
Frequently asked questions
| What should I check on delivery? |
|---|
| Check that the numbers match the description and that the connectors and housing show no cracks or corrosion. |
| Is the part new? |
| This is a used, working part in good condition. You will find the warranty period in the product features table. |
| 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. |
Send a photo of your part or its number to contact@auto24parts.com and we will confirm whether this listing fits.