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.
SAM comfort module Mercedes Benz A9069006303
Vendors's code: A9069006303
Product code: A9069006303
Barcode:
Code 39:
ISBN:
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Part number A9069006303 - is it the right choice?
Used, working part: SAM comfort module for Mercedes Benz - numbers A9069006303. Before ordering, make sure the numbers match the label of your part.
SAM comfort module Mercedes Benz
This module (SAM comfort module) is intended for: Mercedes Benz. This is a used, working part in good technical condition.
What a fault looks like
- cabin illumination or signalling does not work,
- the module connector shows signs of corrosion,
- locks and windows behave inconsistently,
- fault messages appear after starting.
Inspect the module connectors: green or burnt pins cause symptoms similar to faulty electronics.
Part markings
- A9069006303 - Mercedes-Benz number (OEM)
Application according to the listing
- Mercedes Benz - model
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.
What this part does
It is an electronic node of the body wiring: it receives signals from switches and sensors and then activates consumers such as lights, locks or ventilation.
In Mercedes cars the SAM (Signalerfassungs- und Ansteuermodul) collects signals from switches and controls body consumers, so its version depends on the model and equipment.
Questions and answers
| 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. |
| Is the part new? |
| This is a used, working part in good condition. You will find the warranty period in the product features table. |
| 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. |
If you have questions about the application, write to contact@auto24parts.com and give the number from the label.