Door locks not working, done searches, but windows do work
Hey folks I've done alot alot alot ALOT of searches.
I have also went through the steps of narrowing down the problem.
Here is the problem. My wife's BMW 328i '96 auto has some door lock issues. Almost a year ago an aftermarket alarm system was installed. I was weary about this. BMW dealer also said the cars do not get along with AM alarm systems.
Well yesterday the doorlocks no longer lock or unlock with the alarm system. The back passenger doors stay locked. I can not unlock them with alarm or manually. I cannot pull handle either.
I do not know if the trunk will unlock manually because she was sold the car with only the ignition/door key not the master key. But it is locked none the less
The gas cap which usually never closes for some reason now is almost dead bolted shut.
The driver's and front passenger's door will unlock manually only if done seperately.
If I am driving in the car, I will hear the solenoids in the car doors popping and a relay going off. I can tell they are trying to work. I check the fuses for the central locking system and replaced them just in case.
I tried to do all the little tricks off this site and bimmerforums.com
I took the dash/glovebox apart also. Located the Central Locking System Relay I believe. It is a green relay? Well when I pulled it out. None of the solenoids were popping sound in the doors anymore. So I believe this is the right relay. The metal legs of the relay look a little burnt.
Another issue is the CD player had the power cut when I drove it to Advanced Auto to pull codes, but was working whent he wife drove it to the house for me to check it out. I pulled the CD player out pulled the harness, gave it a sec and plugged it back in and it began to work fine again.
The Alarm, Central Locking, and CD player are all interconnected. I am telling my wife it's the damn alarm system causing the issues. The alarm installers are blaming the car.
From what I understand it is not the Central Body Electronic Module because the windows work fine.
And when I do the key in door lock trick all the windows will go up fine. Everything works fine electronically in the car. The door locks sound like they are trying to lock and unlock but it's like they are being overridden by a relay or wiring.
Oh yes and another thing I can not lock the car from the inside, nor unlock any of the doors by pulling the knobs. I can only lock and unlock with the key in the lock.
get rid of the aftermarket alarm and then let us see...
diagnosing your probs via the books will be useless if the AM circuits interfere with what your car's DME/ECU views as "normal"
On a lighter side, let's laugh a little
RE: your post in part reads: "...The alarm installers are blaming the car." No pun intended, but what are we to do? get rid of the alarm to save the car?... or get rid of the car to save the alarm? hehehehe
Last edited by darkhorse737; 08-16-2008 at 08:02 PM.
I had a similar problem with a car I purchased from a friend. He, of course, made no mention of it when I went to get it. Anyway, long story short, I took off the interior door panel and the automatic doorlock actuator (the thing inside the door responsible for locking and unlocking the door, and possibly the noise you keep hearing clicking) had been attached improperly.
My friend bought the car used and I'm pretty sure that it was a repo. But he drove it around and had fun. There are numerous signs of an AM car alarm at one time being installed, and later various components were removed. Anyway, it's entirely possible that, if the guys installing the car alarm system had to take off the door panels to mount their alarm equipment, they did the same thing that happened in mine. I would ask them, and then if they deny it, try taking it to a mechanic you trust and then to a dealer.
i had a problem in that similar situation, but i always locked it from the trunk whenever i would try to lock the door and see the locks pop back up.....maybe it is the aftermarket alarm...but itll be alright, its all worth it in the end..
" The path of righteous is like the first gleam of dawn, shining ever brighter till the full light of day."
You can be unlocked with various types of locks that are shockproof, unpicked and the mountain of evidence. You might even consider mechanical locks, electronic locks and fingerprint locks, all without a key. Both mechanical and electronic locks use a type of keyboard you press a secret code that can be customized. Both types of door locks keyless entry operation of a safety lock and drop it when you enter the correct code, the mechanical lock is opened manually, while the electronic lock is opened by electrical signals.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.