Keyless go partial failure
Thread Starter
MBWorld Fanatic!
Joined: Dec 2010
Posts: 2,109
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2008 CLK550 Cab
Keyless go partial failure
Yesterday my driver's door handle keyless go buttons failed to work. No message displayed on the cluster. Passenger handle works fine and the car starts fine. Conventional wisdom seems to be that a new door handle is needed, but most of that wisdom is several years old so I thought I'd ask if there is another possible cause. The reason I ask is because there are two micro switches in the handle - one to lock and one to unlock - and it seems unlikely they would fail simultaneously. Is there some common component to those two switches that could be the cause?
Super Member
Joined: Mar 2010
Posts: 684
Likes: 14
From: Lebanon
2007 BMW 550i
Yes! water! I read somewhere on this forum once about a guy who took apart the handle (not necessarily w209, but the same system as our car door handle) and found that water had destroyed some contacts, he re-soldered and it worked.
Super Member
Joined: Mar 2010
Posts: 684
Likes: 14
From: Lebanon
2007 BMW 550i
FOUND IT! Second page a guy posted a picture of his handle torn apart, on the last page are 2 pdf files about repairing the handle itself.
https://mbworld.org/forums/w211-amg/...ement-diy.html
https://mbworld.org/forums/w211-amg/...ement-diy.html
Thread Starter
MBWorld Fanatic!
Joined: Dec 2010
Posts: 2,109
Likes: 112
2008 CLK550 Cab
Interesting thread. Good idea about swapping the passenger side first to see if that is the problem. Today it worked to unlock the door a couple times when I grabbed the handle because I forgot it was broken.
