Most power door locks operate using gears or motors that may quietly whir or make noise when they operate.
Mercedes door lock actuator problem.
Problems mercedes benz ml350.
You likely have a shorted door lock actuator which you can replace with a new unit for the lock that is not working.
Whereupon they either don t work at all or otherwise bounce up and down.
This article applies to the mercedes benz c class w204 2007 2014.
Unusual noises coming from inside the door.
I bought the springs from some company in germany on ebay for less than 20.
This can result in the car s locks malfunctioning.
Due to their frequent use the springs in the door lock actuator mechanism wear out over time.
The tank in the trunk stores enough vacuum for approximately 10 lock unlock functions with the car off and then the locks will have to be opened manually.
Apply wd 40 or equivalent product directly into the lock.
If a door unlocks but will not lock again then replace the door switch.
Open and close lock to recalibrate.
The door actuators are connected to the main actuator in the driver side door by a series of hard plastic vacuum lines.
Unusual noises coming from inside the door are one of the first symptoms of a potential problem with a power door lock actuator.
Usually a bad or failing power door lock actuator will produce a few symptoms that can notify the driver of an issue that should be serviced.
Perhaps your mercedes locks work but they open and close slowly.
A mercedes benz 600 sel door lock actuator replacement costs between 136 and 163 on average.