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 Volkswagen Passat 3AA937087E 5WK50449
Vendors's code: 3AA937087E
Product code: 3AA937087E
Barcode:
Code 39:
ISBN:
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Part number 3AA937087E - is it the right choice?
Used, working part: comfort control module for Volkswagen Passat - numbers 3AA937087E; 5WK 50449 / 5WK50449. Compare the numbers with the label of the part currently in your car.
Comfort control module Volkswagen Passat
Looking for a replacement for a faulty module for Volkswagen Passat? We offer a used, working comfort control module in good condition.
Function in the car
Which functions the module handles depends on the software and equipment of the car; the same physical module may work differently in another car.
How to choose the part
For this model we offer several parts that differ in their numbers. The number on the label and the year decide, not the model name alone.
When to replace the part
- the central locking or locking signal does not work,
- interior lights or indicators work incorrectly,
- communication errors appear on the dashboard,
- electric windows respond with a delay or not at all.
Compare all numbers with the label on your module, because the same car model may have had several versions.
Which car it is for
- Volkswagen Passat - model
- 2010 - year
- Siemens - manufacturer
Numbers on the label
- 3AA937087E - VAG group number (OEM)
- 5WK 50449 / 5WK50449 - manufacturer number (Siemens)
Frequently asked questions
| What does "used, working" mean? |
|---|
| 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. |
| Which number matters most when matching? |
| It is best to compare all numbers on the label, above all the one marked as the manufacturer or OEM number. |
Write to contact@auto24parts.com with the model, year and the number from your part - we will check the fitment.