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W163 ML55 2002 GCC
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Discussion Starter #1
Dear Friends,

Need your kind help to fix some of the issues with my 2002 ML55 AMG GCC Spec

1. My driver door actuator motor is making sound and the door doesn't open. I can open with the key.

2. Locking with the key doesn't lock all door.

Lets start with the above.

Hope you all can support me

Thank you very much in advance for all your help.

Kumar.
 

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w163 02 ML500 W210 97 E50Amg w202 99 C230K w124 - need more space, time to build again
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2,189 Posts
Kumar,

Perhaps the lock has become dry and needs lubrication. Buy a small can of WD40 or similar w/red straw. Spray the key blade & insert the blade into and out of the key hole slot a few times. And then insert the straw into the key slot hole and spray once or twice; don't over do it.

Any machine gunning on the door actuator?
 

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W163 ML55 2002 GCC
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Discussion Starter #3
Dear Khomer2,

Thank you for your advise.

Will definitely try WD40.

No machine gunning.

It used to lock ,unlock and lock again when I press the lock on the key fob for past couple of years, before this new problem.

Had removed the lock cylinder to see why it was not turning when I tried to unlock, since the actuator motor just runs without lifting the pin to open the door.

It was very dry with dirt. Cleaned the dirt and the cylinder started turning.

But will not lock all doors, only unlocks them.

Will use WD40 as you said and update you.

Thanks again

Kumar
 

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00' ML55 AMG, 95' S320
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97 Posts
There is probably at least one other lock actuator that is bad/failing. You will need to scan for codes and see what it says for the door locks.
 

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w163 02 ML500 W210 97 E50Amg w202 99 C230K w124 - need more space, time to build again
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