My 1999 BMW doors lock and the moon roof open on its own when the car is parked and not running.What could be the problem?

Asked by Jul 12, 2012 at 04:14 PM about the BMW 3 Series

Question type: General

3 Answers

4,395

There are many things that could cause this issue. Such as a key lock on one of the doors sticking. The other issue that is more likely the issue in your body module activating the locks and moon roof. Hope this helps and good luck with your diag.

1 out of 1 people think this is helpful.

The contacts in the drivers door lock cylinder are faulty. Replace the door lock cylinder and micro switches.

The only place where a request for all doors and sunroof to be opened is the drivers lock cylinder and key remote. The drivers lock cylinder is worn and contacting the micro switch causing this. If you carefully unlock the door with the key (in the lock cylinder) and center the cylinder you will see tat the problem does not occur. Secondly the key remote could only make this request when it was in range of the car. You should clear the central locking/body codes after making te repair.

Your Answer

Add photo

Related Questions

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 35,653 nationwide 3 Series listings starting at $900.

ZIP:

Search BMW 3 Series Questions

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,430
#2 Robert Charlson
Robert Charlson
Reputation 1,500
#3 Matt Mankinen
Matt Mankinen
Reputation 1,160
View All

Related Models For Sale

Used BMW 5 Series
540 Great Deals out of 14,694 listings starting at $1,375
Used BMW M3
53 Great Deals out of 1,945 listings starting at $4,000
Used Mercedes-Benz C-Class
581 Great Deals out of 30,911 listings starting at $1,500
Used Audi A4
206 Great Deals out of 10,906 listings starting at $1,333
Used BMW 4 Series
227 Great Deals out of 7,497 listings starting at $19,995
Used Ford Mustang
300 Great Deals out of 45,096 listings starting at $2,000
Used Honda Accord
684 Great Deals out of 81,554 listings starting at $1,200
Used Mercedes-Benz E-Class
482 Great Deals out of 22,747 listings starting at $1,450
Used BMW X5
386 Great Deals out of 15,820 listings starting at $1,300
Used BMW 6 Series
87 Great Deals out of 3,330 listings starting at $4,500
Used Chevrolet Camaro
158 Great Deals out of 35,580 listings starting at $1,995
Used BMW 7 Series
185 Great Deals out of 6,196 listings starting at $3,500
Used BMW 1 Series
62 Great Deals out of 1,439 listings starting at $6,900
Used Lexus IS 250
218 Great Deals out of 5,319 listings starting at $5,499
Used Dodge Charger
250 Great Deals out of 27,349 listings starting at $1,997