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 W169 5DK00872821 A1695405545
Vendors's code: 5DK00872821
Product code: 5DK00872821
Barcode:
Code 39:
ISBN:
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Part number 5DK00872821 - is it the right choice?
Used, working part: comfort control module for Mercedes W169 - numbers 5DK 008 728-21 / 5DK00872821; A 169 540 55 45 / A1695405545. Compare the numbers with the label of the part currently in your car.
Comfort control module Mercedes W169
The part in this listing handles body electronics in: Mercedes W169. Choose it by the numbers on the list. It is used, working and in good condition.
Role of the part in the car
A module failure is often mistaken for faulty individual consumers: when several unrelated functions stop working at once, it is worth checking the module as well.
Part numbers to check
- 5DK 008 728-21 / 5DK00872821 - manufacturer number (Hella)
- A 169 540 55 45 / A1695405545 - Mercedes-Benz number (OEM)
Compatibility with your car
Our range also includes other parts for this model with different numbers. Choose by the number on the label, not by the model alone.
Listing details
- Mercedes W169 - model
- Hella - manufacturer
Symptoms of a fault
- warning lights on the dashboard come on for no reason,
- the system returns to normal after the battery is disconnected,
- electrical faults appear after rain or a car wash,
- some functions work only intermittently.
Inspect the module connectors: green or burnt pins cause symptoms similar to faulty electronics.
Questions before buying
| What condition is this part in? |
|---|
| It is a used, working part in good condition. Warranty details are listed in the offer features. |
| 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. |
Send a photo of your part or its number to contact@auto24parts.com and we will confirm whether this listing fits.