[DR92OR]

The trunk latch on my 2014 328d xDrive will not unlatch using the rear handle, front trunk latch button, or the key fob. My vehicle does not have a key lock on the trunk. I have verified that the valet lock is off. I have checked the wiring for any sign of broken shielding or loose connections. There does seem to be voltage going across the wires. All trunk lighting is working when the actuator is unlatched using the emergency trunk release. I replaced the actuator and have checked all fuses in the back of the vehicle. The battery on my vehicle is 9 years old, but everything else functions fine and I've never had trouble starting the car. Any thoughts on what could be happening? Is there something I'm missing? (To be clear the trunk latches fine, but will only unlatch using the emergency trunk release).

[DR92OR]

I have since replaced the battery out of misplaced hope that would solve the electrical gremlin. No joy. Probably next step would be looking at replacing the wires? After that who knows...

[mario123]

Originally Posted by DR92OR

I have since replaced the battery out of misplaced hope that would solve the electrical gremlin. No joy. Probably next step would be looking at replacing the wires? After that who knows...

Hi matey, just wondering if you got to the bottom of this issue. I have the same issue and its doing my head in. I have replaced the actuator but no go. I have also ruled out the wiring harness. I am beginning to suspect the REM module.

The thing is though I am seeing 6.8V at actuator cabling when i hit the trunk button.

[Alpine-F80]

Originally Posted by mario123

Hi matey, just wondering if you got to the bottom of this issue. I have the same issue and its doing my head in. I have replaced the actuator but no go. I have also ruled out the wiring harness. I am beginning to suspect the REM module.

The thing is though I am seeing 6.8V at actuator cabling when i hit the trunk button.

Any luck yet? I'm in the same boat...about to try buying a used trunk lock actuator. All the wiring & fuses seem fine. Swapping the REM (without coding) did not fix trunk opening issue as I've read it should, so I'm wary to code the new one without verifying it's not just the trunk lock actuator.