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Roger, BMW Master Tech
Category: BMW
Satisfied Customers: 5808
Experience:  10 yrs. experience as BMW Master Technician, shop foreman and dealer.
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Mini cooper..the alarm just keeps going..only happens

Customer Question

Hi
I have a mini cooper s '08. Lately the alarm just keeps going off without any reason! It only happens outdoors after +/- an hour, it does not happen in a garage. The key fob battery is ok, i've checked if everything (windows,trunk,..) was closed. I also tried to disable the tilt sensor by pressing the lock button on the key fob 2 times but nothing helped. So I don't know what to do?

So, to clarify my question. I have already made an appointment with my BMW dealer, but it's one week away. So I would like to know if there's a way to disarm my car alarm till then?

Thanx,
Aron
Submitted: 4 years ago.
Category: BMW
Expert:  Roger replied 4 years ago.

Hello,

 

I can imagine how annoying this must be. I have looked over the wiring diagram for your alarm system. The alarm is fed by fuse 26. I think the fuse panel (called the junction box) might be difficult to access but I have the location for you.

 

A4010, F19, F27, F28, F37, F48, F49

GREO_R56_61_0048

 

 

A common failure is actually the hood switch. It might be worth a shot to disconnect the hood switch by unplugging the connector. It might be worth trying this before removing the fuse for the alarm.

GREO_R56_61_0060

 

 

 

Make sure the vehicle is disarmed when removing the fuse. If you do choose to try to pull the fuse be ready to put it back in as in some instances the vehicle thinks the alarm system is being tampered with and the siren might sound. If it does place the fuse back in and lock and unlock the vehicle to disable again. If this is the case then the fuse won't be an option unless you want to wait for the internal battery to drain inside the siren (I think it takes an hour.)

 

The good thing when you get to the dealer it will store what set off the alarm. Make sure to tell them that you disconnected the hood switch in case this was not the main cause as it will set a fault and could confuse the tech.

 

I hope this information is helpful. Please accept and thank you.

Roger, BMW Master Tech
Category: BMW
Satisfied Customers: 5808
Experience: 10 yrs. experience as BMW Master Technician, shop foreman and dealer.
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