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Door locks going out?

bladerunner

Member
Member
Hi all, ever since I got my 400e it has had intermittent problems with the alarm going off randomly throughout the night, with my current solution being to lock it from the passenger door (hasn’t gone off in the past 6 months) last night I was driving around and accelerated from a stop when my door locks suddenly started going up and down. I immediately stopped the car and tried to check for any CELs but nothing came up, and when I tried accelerating in the parking lot I pulled off in the locks didn’t go off but rather made strange noises, it was only at speed of 30-45 mph that the locks went crazy. Could this be an issue in the pump? I can say with confidence that the locks in both unlocking and locking sometimes lag.

Also I have an intermittent CEL light for lights come on to my cluster, could this be related to this issue or is it its own problem?

Thanks!
 
The CEL only turns on for emissions-related faults, never for anything related to the chassis. The alarm / door locks / lights are totally separate and isolated.

The factory alarm can be bypassed / disconnected to eliminate it going off overnight.

I have no idea what's going on with your locks. The locks are separate from the alarm. Is there an aftermarket alarm system present? Remove the plastic shield above the driver footwell area and look for a box, or wire spaghetti. Could be an older alarm system failing, or bad wiring, etc. Dunno what would cause the factory system to flip out at a certain speed.

:blink:
 

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