Alarm Keeps Going Off

[terry8]

Dear Gurus,What should I check if my alarm keeps going off even though there is no movement or anyone around the car while it is parked ?Bet Regards,

 

[jarance]

Use a diagnostic tool. Alarm triggered is registered in the shadow memory.

Scan it and you know what it the device that is triggering the alarm.

 

[terry8]

Hi Jarance,

Will the mechanic in the workshop have this tool (they dont seem to know mush of electrical system) or the audio/alarm shops ? Where should i go to get this checked ?

Terry

 

[aidilj]

terry8, most BMW workshop would have a diagnostic machine to diagnose customer BMWs. Workshop that doesn't have diagnostic tool for BMW cannot be allowed to touch a BMW.

 

[jarance]

Hi Jarance,

Will the mechanic in the workshop have this tool (they dont seem to know mush of electrical system) or the audio/alarm shops ? Where should i go to get this checked ?

Terry

Where do you normally service your car? Most reputable BMW Specialist should have a GT1 or some sort of tool to do the work.

Audio/alarm shop mostly dont have unless they are very special shop.

 

[terry8]

I service my car with MSpeed. he is very good mechanically. But he asked me to go to an alarm shop for this problem

 

[terry8]

Can you recommend a place where I can get this checked around PJ or old klang road ? Thanks

 

[saat]

I can't tell your car model from your Avatar but since you posted this the E46 section, I would assume it is an E46, try this simple solution.

Try disconnecting the bonnet switch. It is a plunger type switch. On the E46, it is located in the engine compartment on the firewall driver side I think.

I had the same problem on my E85 which is essentially and E46 in drags. The alarm keeps going off even when no one touched the car. Disconnecting the switch seems to cure the problem on mine. When I reconnected it, the problem came back. I now leave it disconnected. It seems that it is a known problem with the E46.

 

[Ibrahim Hanif]

I experienced my alarm didn't stop. Don't know why. I was driving my car to workshop with my alarm on. Very weird when all people see me. My mechanic did reset the settings and disconnect the battery as well. Then the alarm ok.

 

[terry8]

I can't tell your car model from your Avatar but since you posted this the E46 section, I would assume it is an E46, try this simple solution.

Try disconnecting the bonnet switch. It is a plunger type switch. On the E46, it is located in the engine compartment on the firewall driver side I think.

I had the same problem on my E85 which is essentially and E46 in drags. The alarm keeps going off even when no one touched the car. Disconnecting the switch seems to cure the problem on mine. When I reconnected it, the problem came back. I now leave it disconnected. It seems that it is a known problem with the E46.

I tried already but it will still ring whenever i use the remote to close the doors.

 

[terry8]

I experienced my alarm didn't stop. Don't know why. I was driving my car to workshop with my alarm on. Very weird when all people see me. My mechanic did reset the settings and disconnect the battery as well. Then the alarm ok.

My alarm only goes off when i have parked the car and close the doors with the remote

 

[saat]

Try the obvious and simplest first.

Isolate each sensor switch at the doors, boot and bonnet. All these switches work on grounding. Unground them one at a time. If after all this and the problem still persist, them you can conclude that it is the car security module.

 

[terry8]

Try the obvious and simplest first.

Isolate each sensor switch at the doors, boot and bonnet. All these switches work on grounding. Unground them one at a time. If after all this and the problem still persist, them you can conclude that it is the car security module.

Ok sounds like a great idea

 

[terry8]

Try the obvious and simplest first.

Isolate each sensor switch at the doors, boot and bonnet. All these switches work on grounding. Unground them one at a time. If after all this and the problem still persist, them you can conclude that it is the car security module.

Thank youo