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 S Klasa W220 W215 A0285458132 05045132
Vendors's code: A0285458132
Product code: 05045132
Barcode:
Code 39:
ISBN:
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Part number A0285458132 - is it the right choice?
Used, working part: SAM comfort module for Mercedes S Klasa W220 W215 - numbers A0285458132; 05045132. Compare the numbers with the label of the part currently in your car.
SAM comfort module Mercedes S Klasa W220 W215
If several body functions in your Mercedes S Klasa W220 W215 have stopped working at once, the module may be the cause. We sell a used, working unit in good condition.
When to replace the part
- the system returns to normal after the battery is disconnected,
- electrical faults appear after rain or a car wash,
- some functions work only intermittently,
- warning lights on the dashboard come on for no reason.
Inspect the module connectors: green or burnt pins cause symptoms similar to faulty electronics.
Numbers on the label
- A0285458132 - Mercedes-Benz number (OEM)
- 05045132 - additional part number
What this part does
The module collects the driver's commands and distributes power to individual body circuits, so many small functions in the car depend on it. 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.
Fitment
Compare number A0285458132 in full with the number on your part. Different versions were fitted to the same models, so the number decides, not the model and year alone.
Vehicle and manufacturer
- Mercedes S Klasa W220 W215 - model
- 1999 - year
Frequently asked questions
| Is coding needed after replacement? |
|---|
| It depends on the make, model and version. Before buying, check whether your car needs adaptation or coding after the replacement. |
| 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. |
| What condition is this part in? |
| This is a used, working part in good condition. You will find the warranty period in the product features table. |
Write to contact@auto24parts.com with the model, year and the number from your part - we will check the fitment.