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 Audi 3C0937049D
Vendors's code: 3C0937049D
Product code: 3C0937049D
Barcode:
Code 39:
ISBN:
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Part number 3C0937049D - is it the right choice?
Used, working part: comfort control module for Volkswagen Audi - numbers 3C0 937 049 D / 3C0937049D. Compare the numbers with the label of the part currently in your car.
Comfort control module Volkswagen Audi
Looking for a replacement for a faulty module for Volkswagen Audi? We offer a used, working comfort control module in good condition.
Function in the car
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 same model came with different module versions, so it is worth comparing the manufacturer number too.
Symptoms of a fault
- the battery drains overnight for no obvious reason,
- door signalling works incorrectly,
- the interior lighting does not switch off,
- nothing happens when settings are changed.
Before buying a module, check fuses, earth points and connectors - corrosion and damaged wiring cause similar symptoms.
Matching by numbers
Number 3C0 937 049 D also appears in another listing. Compare all numbers with the label on your part - we do not assume that listings are interchangeable.
Part numbers to check
- 3C0 937 049 D / 3C0937049D - VAG group number (OEM)
Which car it is for
- Volkswagen Audi - model
Questions and answers
| What does "used, working" mean? |
|---|
| It is a used, working part in good condition. Warranty details are listed in the offer features. |
| 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. |
Not sure? Write to contact@auto24parts.com and we will help you choose the right part for your car.