ML350 2004 door locks (2) makes noise does not lock randomly, others OK

RANJAY SINGH • 11 September 2019
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ML350 2004 door locks (2) makes noise does not lock randomly, others OK.

 

Strange, first just front passenger side was having machine gun door issue, now suddenly that became OK, same instant, problem shifted to rear driver side, goes up and down machine gun noise. 

 

Is this individual door actuator problem? if so, how automatically without doing anything front passenger side became OK on its OWN. Driver side rear actuator was replaced 2 years ago, why did it break again, is the problem somewhere else? common controller? signal issue? 

please let me know i can drop by for a check up or suggest what should I do?

 

Ranjay

 

 

 

191000

Your door lock acuators are bad, it's a wiring issue or possibly even a SAM module. 

 

These three are the most likely casues in my opinion. It is hard to tell without even testing the door acuators or running a scan. There should be faults codes one way or another.

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  • If all of the doors are not working then you need to look into the fuse box. Have a look at the manual and you will figure it out. Otherwise, it is actuator failure and for that, you would need to fix the wiring. 

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  • I guess the first option would be using a scanner and checking what actually is the problem. Most seemingly, this problem occurs if the actuator is defective. 

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