This repair was done on a 2008 bmw 328i e90.
How to fix door lock actuator bmw.
Clean and reconnect the actuator.
This video is a how to replace an rr door lock latch actuator assembly.
I haven t figured out which is which yet.
You should see the voltage polarity toggle with each switch activation.
All 4 doors use this part.
Time to replace your door actuator.
Attach the plastic door lock actuator back onto the assembly with two screws.
The symptom was a door that would not un.
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.
I finally got the think cracked open.
One of the motors is for the double lock and one is for the single lock.
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.
Door handle screw cover.
Unplug the door lock actuator electrical connector.
Place the lock and actuator assembly with the cables attached back into the door.
Let me tell you it wasn t easy.
Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch.
Lazy or dead door lock rod.