Over enthusiastic alarm.

For the M Powered Z3 derivatives

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Zim
Joined: Thu 25 Sep, 2008 15:42
Posts: 65

  M roadster S52

Over enthusiastic alarm.

Post by Zim » Mon 15 Jul, 2013 18:28

Hi guys just thought I'd ask here before I go to BMW. My M is doing strange things. The alarm seems to randomly go off, it seems to go off most often when I'm driving and breaking to slow down it will go off for about 30seconds then go off till the next time I need to slow down. As you can tell this is driving me nuts.

I checked the boot sensors and haven't spotted anything out of the ordinary. I have put in a new battery if that makes any difference. The bonnet sensor seems ok too

Any ideas?

Thanks in advance

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Robert T
Site Admin
Joined: Mon 12 Jun, 2006 11:35
Posts: 10008

  Z3 roadster 1.9
Location: Cheshire

Re: Over enthusiastic alarm.

Post by Robert T » Mon 15 Jul, 2013 18:32

Check that the tilt sensor in the boot isn't underwater. It is located in the bottom of the well behind the left-hand boot trim and is the most common cause of the alarm going off when driving.

Other than that, check that the connections on your new battery are clean and tight, as bad connection there can cause all kind of electrical gremlins.

Cheers R.
Arctic Silver '99 Z3 1.9 & Black '59 Frogeye 1275cc
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Zim
Joined: Thu 25 Sep, 2008 15:42
Posts: 65

  M roadster S52

Re: Over enthusiastic alarm.

Post by Zim » Tue 16 Jul, 2013 08:59

Ha cheers mate! spot on no idea how water got into there but cleared it all out and everything is back to normal again.

Thanks again!

User avatar
Robert T
Site Admin
Joined: Mon 12 Jun, 2006 11:35
Posts: 10008

  Z3 roadster 1.9
Location: Cheshire

Re: Over enthusiastic alarm.

Post by Robert T » Tue 16 Jul, 2013 10:09

No worries. :)

Water can get into the boot from a number of places - check third brakelight, aerial grommet, and look for a damp carpet in either the softtop box or the upper boot trim.

Cheers R.
Arctic Silver '99 Z3 1.9 & Black '59 Frogeye 1275cc
Image

Zim
Joined: Thu 25 Sep, 2008 15:42
Posts: 65

  M roadster S52

Re: Over enthusiastic alarm.

Post by Zim » Tue 16 Jul, 2013 10:16

will do mate, will do some investigation this evening :)

thanks

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