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Just started having problems with the power locks on my 2008 E350. Any time I try to lock the doors, the locks on all four door chatter lock/unlock 3-4 times. This happens even when using the locking button on the drivers door.
Just ran a diagnostic and came back with “voltage too low” on all 4 door control modules. Could that be the problem? Would you, or anyone, know what controls that voltage? Is it an auxiliary battery?
2008, no auxiliary battery check battery. If fine, odd that all 4 locks are simultaneously bouncing but here are additional cost effective repairs: https://www.mercedesmedic.com/quick-...ing-door-lock/ unsuccessful, search “w211 bouncing door lock spring replacement”
Again, odd that all four actuators would fail in this manner simultaneously. Consider checking associated fuses @ interior fuse panel: f21 right rear door control unit, f22 right front; f32 left rear, f33 left front. Pull each for a minute or two and reinsert. Unsuccessful, remove fuse panel inspect connections. Fine, move on to CAN connectors.
Started pulling each of the door controller fuses and found that, although all 4 door locks “pulsated”, the bad actuator was the drivers door. To temporarily fix the problem, I wrapped the door button with one layer of electrical tape. This put enough friction on the button to allow the locks to function properly. I plan on buying a few actuator springs to fix the problem permanently.
thanx for all the suggestions. They were greatly appreciated.
Started pulling each of the door controller fuses and found that, although all 4 door locks “pulsated”, the bad actuator was the drivers door. To temporarily fix the problem, I wrapped the door button with one layer of electrical tape. This put enough friction on the button to allow the locks to function properly. I plan on buying a few actuator springs to fix the problem permanently.
thanx for all the suggestions. They were greatly appreciated.
How did you manage to single out which of the lock was making all of them bounce together ??
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