Minor Problems

[Slvr e39]

So I went to unlock my car and I noticed the back driver door didn't unlock. "Hmm...thats weird" so i unlock it and lock it again and it works, then it just got pregressively worse until now, the rear driver side door doesn't unlock at all wirelessly or with the button inside, only mechanically by opening the door handel, and then it doesn't lock. Any easy fix?

Other thing is that my alarm on my car doesn't detect anything. I cant make it go off even if I want to (unless I press and hold trunk open button or open my rear door that gets stuck unlocked) Is there a way to make it more sensitive?

i was hopeing to do these two things without taking it to the shop, any possibilities?

[e28m30]

that's a good one, does the keyless remote work, does the trunk lock motor work. It's most likely the door lock actuator (motor) is bad. try resinc, check fuse in trunk forget which # it is, but it's a 7.5 amp(brown) fuses are above the battery..good luck