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.
Bluetooth module Mercedes W203 W209 W211 W220 A2118201485 UH03MM01LQ
Vendors's code: A2118201485
Product code: A2118201485
Barcode:
Code 39:
ISBN:
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Part number A2118201485 - is it the right choice?
Used, working part: bluetooth module for Mercedes W203 W209 W211 W220 - numbers A 211 820 14 85 / A2118201485; UH03MM01LQ. Before ordering, check the numbers on the label of the part removed from your car.
Bluetooth module Mercedes W203 W209 W211 W220
The part in this listing handles the phone kit in: Mercedes W203 W209 W211 W220. Choose it by the numbers on the list. It is used, working and in good condition.
Matching by numbers
For this model we offer several parts that differ in their numbers. The number on the label decides, not the model name alone.
Application according to the listing
- Mercedes W203 W209 W211 W220 - model
What this part does
Older modules support newer phones only in a basic way, so the functions depend on the module version.
Numbers to compare
- A 211 820 14 85 / A2118201485 - Mercedes-Benz number (OEM)
- UH03MM01LQ - additional part number
Typical failure symptoms
- music is not streamed from the phone,
- the module connector shows signs of corrosion,
- the phone book in the car does not work,
- a phone error appears on the display.
Remember that the module may need coding or adaptation after replacement - check this for your model.
Questions and answers
| What if I cannot see my number in the description? |
|---|
| Write to us and give the number from your part. We will check whether we have it in stock, also in another listing. |
| Where can I find the number on the part? |
| The number is on the label or housing, usually visible after removing the part from the car. If you cannot read it, send us a photo. |
| Is the part new? |
| It is a used, working part in good condition. Warranty details are listed in the offer features. |
If you have questions about the application, write to contact@auto24parts.com and give the number from the label.