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 A1645402501
Vendors's code: A1645402501
Product code: A1645402501
Barcode:
Code 39:
ISBN:
Ask about the product
Administratorem danych osobowych jest Auto24parts. Przetwarzamy je w celu przesłania odpowiedzi na zapytanie. Więcej informacji dotyczących przetwarzania danych osobowych znajduje się w polityce prywatności.
Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
Shipping cost for the selected product
The shipping cost applies to this product (in the selected variant - if applicable). It may change after adding other products to the cart.
Part number A1645402501 - is it the right choice?
We sell a used, working part (SAM comfort module) for Mercedes Benz with numbers A1645402501. Before buying, compare the numbers with the label on the part in your car.
SAM comfort module Mercedes Benz
In Mercedes Benz the comfort module collects signals from switches and distributes them to consumers. We sell a used, working unit in good condition.
Typical failure symptoms
- 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,
- the car does not enter full sleep mode.
Before buying, make sure the cause is not the power supply or wiring, and only then replace the module.
Which car it is for
- Mercedes Benz - model
How this part works
The comfort module controls body functions such as interior lighting, central locking, windows or wipers; the exact scope depends on the make and version of the car. 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.
How to choose the part
For this model we offer several parts that differ in their numbers. The number on the label decides, not the model name alone.
Part numbers to check
- A1645402501 - Mercedes-Benz number (OEM)
Frequently asked questions
| Is the part new? |
|---|
| This is a used, working part in good condition. You will find the warranty period in the product features table. |
| What should I check on delivery? |
| Check that the numbers match the description and that the connectors and housing show no cracks or corrosion. |
| 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. |
Not sure? Write to contact@auto24parts.com and we will help you choose the right part for your car.