Why do door lock actuators fail?

Why do door lock actuators fail?

It can happen when the bracket on the actuator for the interior release cable breaks and prevents the door to be opened from the interior. Like any wirings and parts of any parts of the vehicle, the internal wirings of the actuators may also wear out causing the door actuator to eventually fail.

Why won’t my Mercedes lock the doors?

If just one lock won’t open on your Mercedes, then the problem may rest with broken wiring, a bad solenoid, or perhaps with a blown fuse. You likely have a shorted door lock actuator, which you can replace with a new unit for the lock that is not working.

When to replace the door lock actuator on a Mercedes C class?

If the door locks in your C-Class are bouncing up and down or are otherwise not functioning properly, the system’s actuator might be broken. This is a costly component to replace at the repair shop, but it is something you can do at home. Read on to learn how to replace it yourself. By Jeffrey Bausch – May 18, 2015

How much does a door lock actuator replacement cost?

The average cost for a Mercedes-Benz C300 door lock actuator replacement is between $530 and $603. Labor costs are estimated between $278 and $351 while parts are priced at $252. This range does not include taxes and fees, and does not factor in your unique location.

How do you remove a lock mechanism from a door?

Now, remove the two Torx bolts under the handle cover. Figure 1. Lock mechanism mounting screws. Carefully lever around the edge of the door trim, and lift it off. Pull up and forwards on the door trim to remove. Disconnect all hook linkage, and remove insulation in order to access actuator housing area.

How can I tell if my door lock actuator is broken?

There is a quick test to see if the spring is broken in the lock actuator. If you pull up or push down on the lock post and it doesn’t “click” into the locked or click into the unlocked position, then the spring is broken.