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 Mercedes Benz 6399000800
Vendors's code: 6399000800
Product code: 6399000800
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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Does number 6399000800 fit your car?
Used, working part: comfort control module for Mercedes Benz - numbers 639 900 08 00 / 6399000800. Before ordering, check the numbers on the label of the part removed from your car.
Comfort control module Mercedes Benz
The comfort control module is an electronic body module that handles small comfort functions in the car. This listing applies to: Mercedes Benz. The part is used, working and in good condition.
Role of the part in the car
The module collects the driver's commands and distributes power to individual body circuits, so many small functions in the car depend on it.
Fitment
For this model we offer several parts that differ in their numbers. The number on the label decides, not the model name alone.
When to replace the part
- the car does not enter full sleep mode,
- the module gets hot or smells burnt,
- random errors appear in the diagnostic memory,
- a selected body function does not work although the switch is fine.
Remember that the module may need coding or adaptation after replacement - check this for your model.
Which car it is for
- Mercedes Benz - model
- Temic - manufacturer
Numbers to compare
- 639 900 08 00 / 6399000800 - Mercedes-Benz number (OEM)
Frequently asked questions
| 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. |
| Is the part new? |
| The part is used but working. The warranty is stated in the product features. |
| Do you also sell connectors or wiring? |
| This listing covers only the part described in the title. You will find other items in the remaining shop categories, or ask us about availability. |
If you have questions about the application, write to contact@auto24parts.com and give the number from the label.