W211 for lock misbehaving

[pgh13]

A couple of times recently, unlocking the car with the remote all is fine except the drivers door actuator cycles rapidly about 4 times and stays locked. I cycled it using the key a few times which sorted out for a day or so, but I think it's becoming a problem.

Any ideas?

 

[V6Matty]

Have a search on here for bouncing door locks, it’s a common issue of a small spring failing in the locking mechanism, there are repair kits available but don’t always work and will eventually fail again.
Personally I found it easier to have the lock replaced with a new one, they aren’t that much these days