3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
Check the wires coming into your trunk. Open the trunk, and you should be able to see a wiring harness wrapped in some sort of insulator on the left (amybe right) side, near the hinges. Look for any strayed or broken wires. I had that problem with my trunk for a while. Since the remote can open it, that rules out a bad actuator motor or any fuses.
You could also Ohm out the switch above the license plate while your in the wiring. It sits out there in the weather, even though covered by rubber boot. Check the boot for cuts, holes, and tears, too.
If you end up needing wiring diagrams, someone know. I have them, and I know others do as well.
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