is the door lock system a positive trigger, negative trigger or positive/negative trigger?

It all began at around 2am. Asleep in bed and the alarm starts going off and wakes me up. After confirming no one was trying to break in to the vehicle, I used the key fob to unlock the doors and silence the alarm. After pushing lock again, 15 seconds later, the alarm starts sounding again. So I...

Details: 1996 BMW Z3 M44 4CYL Production Date 9/96. Using both Electrical Trouble shooting guides (1996 1/96-8/96) and (1997 9/96-8/97) because I have a comfort relay from a 96 with a Modul ZV and the production is 9/96 but in the (1997 9/96-8/97) manual it does not show a comfort relay. Not...

Problem started when trying to fix a no crank no start issue on my '04 x3 3.0. Still suffering from issue, but assuming it was the battery which was reading at 12.2 volts, I went and changed, checked new battery before install (read fine at 12.6 volts), but oddly jumped to 13.8 volts when key...

Hello fellow BMW fans! My younger brother disconnected the trunk of my 1997 523i from the central locking system by using the key and turning it completely to the right and now I can't figure out how to reconnect the trunk to the central locking system. I've tried all sorts of things with the...

I'm just posting this to thank the other forum posters, and to post my own SOLUTION to give back to this forum. My car is bone stock. Suddenly, the doors stopped locking when the remote is clicked. Symptoms: 1) remote I'll chirp the alarm and set it. I know the alarm is set because opening any...

My Central Locking Button will only work if the car is running. Anybody else experience this? Or know a fix to it?

Hello all; I have a'97 Z3 that has a problem that has me stumped. The key won't turn I either the driver or passenger door. I can lock the car by pushing the button down when the drivers door is unlatched but not open, my elbow works nicely-LOL I can only unlock it via the trunk, they key works...

Hello all, First of all I'm new to this forum and to BMWs, so my question might sound a little silly but please allow it. Central locking is not working on my car, the key fob doesn't locks or unlocks the doors. however, i think its working because it unlocks the boot and i'm able to open the...

Hi! I just bought a bmw 1993 318i and I had have a unusual issue... I stopped and turned off the car, I left the key on switch, I closed (not locked) the driver door, then I opened the back door of the driver side to fix the safety belt for a child seat, when I closed that door I heard a beep...

Hi I have a mystery to resolve on my compact :mad: I lock the door from Driver's side, the fuel lid seems to have power but doesn't lock, that most likely means its stuck. but the mystery is that if i lock from the passenger's side, it does lock :dunno: Anybody can help please?? :bigpimp:

Hello All!!!!! I'm new to Bimmerfest, so I hope I post this correctly. I recently bought a 92' E36. My mother owned a E30 and I loved it. Anyways... I am having a issue with my central locking. HERES MY ISSUE....I am able to lock/unlock the driver and passanger doors + the trunk with the key...

My wife's X5 central locking system began to work intermittently and then totally failed. At first I thought it was a key problem, but the backup key did not work as well. I then went to look at the fuse box, located the proper fuse and found it to be intact. I replaced the fuse and then...

I have a strange problem with my 97 528i,in hot weather my drivers door manually can unlock all the others(can activate central lock)but when weather comes to be cooler i can only unlock drivers door.Button inside works perfectly also I can always unlock all the doors from trunk.Although I made...

The central locking in my daughter's 2001 X5 is not working (for the most part). - Using a manual key in the driver's door lock, key turns freely but nothing happens. - Pressing on the lock/unlock button in the center console does nothing. - Pressing on the unlock button for the rear upper...

All, Our new to us 03 540 iT M-Sport is confusing me. :eeps: Sometimes the central locking system will lock at a certain mph and sometimes it doesn't. Is there a combination of buttons i am hitting on the key that is turning this thing on or off? I referred to the owners manual but all it...

I have 2001 BMW X5, when i try to unlock the car by pressing the unlock key, all the doors unlock except the driver side back door, i will have to open it from inside only. The knobs pop up for all the doors except the driver side back door. Can anyone help me identify the issue to fix it?.

Hey all, I recently purchased a 2000 528i, the alarm fuse had been removed due to the alarm apparently going off on a whim...I have replaced that fuse and am waiting to see how that goes. I mention it only in case it is related to my real problem. My real question is this. I have the...