09/2002 CLK320 W209 Central Locking not working.

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Michaeltyas

New Member
Joined
May 18, 2020
Messages
27
Location
London
Car
2002 Mercedes CLK320 Coupe
Checked all the fuses associated with central locking and alarm, all good, changed batteries in keys, LED lights up when button pressed, reset keys by pressing lock, unlock together until LED flashes twice. Unlocked the doors once, now will not do anything again.
It's an early W209, does it have a vacuum pump for central locking or is it all electric? Any help gratefully accepted. Thank you.
 
I now have a weird thing happening. When I drive the car for say, minimum 30 minutes, when I stop the central locking works perfectly, then if I leave it for a couple of days it stops working. Any ideas folks? Thanks, Michael.
 
Car battery on the way out?
 

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