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

s550 Door will not latch closed

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Old Mar 22, 2014 | 02:28 PM
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terrymargate's Avatar
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merdeces s320
s550 Door will not latch closed

I have s550 2011

The drivers door will not latch closed, it closes but will not click shut.

All the parts are in the right place, the spindle catches on the locking bar like the passenger but will just not click shut

the passenger you can move the bar with a pen and it clocks and latches closed, the drivers just releases and falls open again

does anyone know if this is mechanical or electronic (the part that latches closed)
When I move the catch manually I can hear a click from the car electronics which tells me that at least part of it is electronic

I an buy another form ebay for $200 as long at its pretty sure the latch itself is faulty

any advice welcome
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Old Mar 22, 2014 | 02:30 PM
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W140 Mercedes S350, W221 S550 sport
If you have a 2011 it's under factory warranty. Why not just take it to the dealer for an easy fix and no cost?
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Old Mar 22, 2014 | 02:31 PM
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merdeces s320
forgot to mention, it was flood damaged so no warranty.
I bought it some months ago and have replaced almost all the ECU's.

All door locks were working fine until this latch problem
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Old Mar 22, 2014 | 09:13 PM
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Originally Posted by terrymargate
forgot to mention, it was flood damaged so no warranty.
I bought it some months ago and have replaced almost all the ECU's.

All door locks were working fine until this latch problem
The soft close should kick in after the first click and suck the door in. What codes are you getting on DAS?
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Old Mar 23, 2014 | 04:46 PM
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might not be related, but I was having similar issue for the longest time. Replace the battery on the key and it fixed the problem. It makes no sense why they're related issues but it fixed for me.
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