You should see the voltage polarity toggle with each switch activation.
How to fix door lock actuator bmw.
Install the white plastic cover back onto the lock and actuator assembly by securing it with the two other screws you removed previously.
Attach the plastic door lock actuator back onto the assembly with two screws.
E46 door lock actuator replacement sorry it s not done so skip to the bottom of this page for diys that i ve found on the various bmw forums.
This repair was done on a 2008 bmw 328i e90.
The symptom was a door that would not un.
All 4 doors use this part.
How to remove and replace front door lock actuator on bmw e46 316ci 318ci 320ci 323ci 325ci 328ci 330ci 320cd 330cd 316i 318i 320i 323i 325i 328i 330i 320d 3.
Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch.
Door handle screw cover.
Bmw 325i door lock actuator replacement driver side front fort lauderdale florida great work even though the weather was not that great outside however the part he installed was actually not the one that i needed to fix my lock it was not his fault he did not fix my problem but would use this service again.
Door lock systems operate the actuator by toggling positive negative voltage to the actuator.
Time to replace your door actuator.
This video is a how to replace an rr door lock latch actuator assembly.
Unplug the door lock actuator electrical connector.
Place the lock and actuator assembly with the cables attached back into the door.
I finally got the think cracked open.
Lazy or dead door lock rod.
I haven t figured out which is which yet.