W210 central locking/window problem

Spadge10

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Sep 18, 2009
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Your Mercedes
1997 E240
Hi I'm having a confusing problem with my 1997 (r) E240 All works fine for a few days then the key will not remotely unlock/lock and I have to use the metal slide out key. The dash door lock switch works fine and the internal boot opening switch works OK. I have fitted new battery's in the key but no results. By disconnecting the main battery + cable and re-connecting after a few seconds everything is back to normal then 4/5 day later it all stops working again - it's driving me mad. I would very much appreciate some help with this problem.
 
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Alex Crow

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W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
it is worth checking the pse unit. it is mounted in foam encapsulation next to the battery. have a look to see if there is any moisture in the plugs or in the area generally.

does anything else fail? like intermittent window faults?
 

television

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Is this also the case when you point the remote right into the drivers door handle
 


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