W209 CLK320 Central locking Intermittent.

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Michaeltyas

New Member
Joined
May 18, 2020
Messages
27
Location
London
Car
2002 Mercedes CLK320 Coupe
Having changed the batteries in the key fobs, checked the fuses connected with the central locking and alarm, reset the key as per the manual, I have a strange thing happening.
The central locking works fine from the dash switch and so does the boot/trunk release, but not with the key fob, unless I go for a 30 minute drive. When I return the key fob works fine. If I leave the car for say 48 hours, the key fob will have stopped working.
Is there a battery anywhere in the system that needs charging and if not charged the central locking will stop working?
The car battery is brand new and fully charged.
Thanks, Michael.
 

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