Alarm goes off at random times

[ZlinG]

Hi Everyone,

Hope you are all good...

I have a little problem with my BMW e46 320d 2004. The alarm just goes off random times.

Not sure whether it could be the battery cause I did had a problem with the battery when I got the car, but not anymore. However, when my car is parked for a day, then the alarm goes off and this is repeated like 5 times the day.

 

[Waseem 333i]

I had same problem on my E30. I had an aftermarket alarm and found that the switch for the bonnet was faulty. Check your door switches and if you have the interior motion sensor. Its gotta be one of the switches.

 

[ZlinG]

I had same problem on my E30. I had an aftermarket alarm and found that the switch for the bonnet was faulty. Check your door switches and if you have the interior motion sensor. Its gotta be one of the switches.

Thanks

How will I know whether it is a door switch? Is there a way to test these? Do I need a tool or anything?

 

[outlaw335]

Had the same problem on my e90.Turned out that the bonnet switch was faulty and no problems since it was replaced.

 

[abmi0000]

My money is on the bonnet switch. Unplug and monitor :thumb:

Had the same issue on my E46.

 

[Waseem 333i]

Looks like bonnet switch is the common culprit.

 

[ZlinG]

Thanks all... I will go searching the culprit... Hopefully it is the bonnet switch and nothing major

 

[moranor@axis]

switch bonnet is well known for this 90% chance is that...

 

[SP33DYV]

Must be the bonnet switch then. :thinking:

 

[ajonker]

just stick on a little spacer using anything on the bonnet switch, had same problem, just pasted on double sided tape that I folded in half and problem was gone! It seems that it does not go in deep enough! that does not sound to well!!!!!!!!!

 

[NavZ]

Same problem in my E46, bonnet switch too :thumbs:
Try the double sided tape, if that fails, disconnect it to see if that solves your problem.

 

[Waseem 333i]

just stick on a little spacer using anything on the bonnet switch, had same problem, just pasted on double sided tape that I folded in half and problem was gone! It seems that it does not go in deep enough! that does not sound to well!!!!!!!!!

That's why BMW is also know as be my wife. They like it deep :biglol:

 

[zaleonardz]

Bonnet switch.

But in case you really want to be sure, somebody with proper BMW diagnostics equipment can actually tell you what event triggered the alarm

 

[zaleonardz]

Bonnet switch.

But in case you really want to be sure, somebody with proper BMW diagnostics equipment can actually tell you what event triggered the alarm

 

[Spy007]

Same issues wit mine. Now where is that bloody bonnet switch???

 

[netercol]

+ 1 for bonnet switch..

 

[abmi0000]

Same issues wit mine. Now where is that bloody bonnet switch???

Top left corner if you standing in front of the car.

 

[Brendon.Myburgh]

mine drove me so nuts i completely took it off & voila .no warning , no alarm

mine is the e90, so it obviously is a sickness with those stupid little switches. doesnt matter which model :thumbdo:

 

[abmi0000]

SO this has been bugging me for years and I somehow always forgot to ask. What happens to the circuit when pulling the switch upwards? What is the purpose of this feature?

Yeah yeah, I am pretty certain that lotsa people didn't know that it can be pulled up a single notch