S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Rear self close.

Old Feb 22, 2025 | 08:33 AM
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Rear self close.

Howdy. Rear passenger side door stopped working doing its self closing procedure. That door is mostly used by my 7 year old, so I did find it useful.
Rest of the doors work fine. From a bunch of reading I assume it’s the micro switch inside the super expensive door latch that’s super hard to remove? In other words it will never be repaired unless it’s starts working again on its own?
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Old Feb 22, 2025 | 09:34 AM
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I thought most was the strut fails

and these days wires snapping in the door hinge area as you used it too much and or it was poorly routed at build - but not heard that on these...
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Old Feb 22, 2025 | 09:35 AM
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most of these convenience features we have all over cars today - got added to provide a convenient point of failure so Merc could rob you...
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Old Feb 26, 2025 | 05:06 PM
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Originally Posted by BOTUS
most of these convenience features we have all over cars today - got added to provide a convenient point of failure so Merc could rob you...

so,I take it there is no cheap fixes for this is it.
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Old Feb 27, 2025 | 04:51 AM
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.... in the last year

we've had three posts where the soft close struts in the doorf failed - get another from a breaker and try
one where the plastic ball joint snapped off on the car end of the drivers door
I have never read in a single car it snap a door loom - but its a Mercedes should be doing this every day on every one made
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Old Apr 1, 2025 | 02:27 PM
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Good news. I sprayed some contact cleaner into the door latch and a week later the door started latching . Not sure if it’s the warmer temps or what but I feel complete .
it was the rear door my seven year old uses so it was like an extra safety feature without me having to tell him to slam the door.
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Old Apr 9, 2025 | 01:31 AM
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@tbilisi79 I have exactly the same problem with the rear right door, but I didn't think of spraying the inside of the latch. Is WD-40 good for this or do I need to buy something "special" for that?
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Old Apr 14, 2025 | 08:56 AM
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Originally Posted by Vinnie P.B.
@tbilisi79 I have exactly the same problem with the rear right door, but I didn't think of spraying the inside of the latch. Is WD-40 good for this or do I need to buy something "special" for that?

from what I gathered. It’s the micro switches that need electric contact cleaner sprayed on them,. You can’t really see them, so sorry inside the latch a bit at a time and hope for the best.
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Old Apr 16, 2025 | 05:29 AM
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So it takes some disassembly to get there. Removing the door trim, obviously.
Thanks.
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