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 ML W164 A1645402401HW A1645452216
Vendors's code: A1645402401HW
Product code: A1645402401HW
Barcode:
Code 39:
ISBN:
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Part number A1645402401HW - is it the right choice?
Used, working part: SAM comfort module for Mercedes ML W164 - numbers A1645402401 HW / A1645402401HW; A1645452216. Before ordering, make sure the numbers match the label of your part.
SAM comfort module Mercedes ML W164
Looking for a replacement for a faulty module for Mercedes ML W164? We offer a used, working SAM comfort module in good condition.
When to replace the part
- electrical faults appear after rain or a car wash,
- the system returns to normal after the battery is disconnected,
- warning lights on the dashboard come on for no reason,
- some functions work only intermittently.
It is worth reading the fault codes first, because many body faults come from switches or wiring rather than the module itself.
Part markings
- A1645402401 HW / A1645402401HW - part number
- A1645452216 - Mercedes-Benz number (OEM)
- A1644423200 - Mercedes-Benz number (OEM)
Function 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. 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.
Which car it is for
- Mercedes ML W164 - model
Matching by numbers
Compare number A1645402401 HW in full with the number on your part. Different versions were fitted to the same models, so the number decides, not the model alone.
Buyers' questions
| What does "used, working" mean? |
|---|
| It is a used, working part in good condition. Warranty details are listed in the offer features. |
| What condition is this part in? |
| It is a used, working part in good condition. Warranty details are listed in the offer features. |
| What condition is this part in? |
| We sell it as a used, working part in good condition; the warranty length is given in the offer features. |
Not sure? Write to contact@auto24parts.com and we will help you choose the right part for your car.