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 A2079004200
Vendors's code: A2079004200
Product code: A2079004200
Barcode:
Code 39:
ISBN:
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Part number A2079004200 - is it the right choice?
Used, working part: comfort control module for Mercedes Benz - numbers A2079004200. Before buying, compare the numbers with the label on the part in 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.
How this part works
The module collects the driver's commands and distributes power to individual body circuits, so many small functions in the car depend on it.
Vehicle and manufacturer
- Mercedes Benz - model
Typical failure symptoms
- the car does not enter full sleep mode,
- random errors appear in the diagnostic memory,
- the module gets hot or smells burnt,
- a selected body function does not work although the switch is fine.
Compare all numbers with the label on your module, because the same car model may have had several versions.
How to choose the part
Our range also includes other parts for this model with different numbers. Choose by the number on the label, not by the model alone.
Numbers to compare
- A2079004200 - Mercedes-Benz number (OEM)
Questions before buying
| What condition is this part in? |
|---|
| We sell it as a used, working part in good condition; the warranty length is given in the offer features. |
| 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. |
Not sure? Write to contact@auto24parts.com and we will help you choose the right part for your car.