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Alarm going off after locked
- Tcochrane92
- Member
- Posts: 650
- Joined: Sat Apr 09, 2016 3:30 pm
- Location: Leamington Spa, Warwickshire, UK
Alarm going off after locked
So my Coupés alarm has gone off a few times randomly.
Typical scenario, is drive it somewhere, park, lock, within 5 mins the alarm is going off. No apparent trigger, happens in various places and no pattern
Any ideas what could be causing it?
Battery?
Ta
Typical scenario, is drive it somewhere, park, lock, within 5 mins the alarm is going off. No apparent trigger, happens in various places and no pattern
Any ideas what could be causing it?
Battery?
Ta
Current: Imola Red 400bhp 640d & Ocean Blue BMW S1000XR Sport SE
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i
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- Member
- Posts: 84
- Joined: Mon May 04, 2015 7:05 pm
- Location: Warwickshire
Alarm going off after locked
Unplug the bonnet opening switch at the bottom of the windscreen and see if it stops.
Replace if so.
Replace if so.
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- Lifer
- Posts: 5277
- Joined: Wed Feb 19, 2014 3:01 pm
- Location: NW London
Alarm going off after locked
As above, new is less than £15 from BMW. If that doesn't do it then battery is next step to check
3.0si Sport: F10 Illuminated ZHP, Retrofit Cruise, OE Stubby, Gaptech RCH+, Kenwood BT73DAB + Handsfree, HIDs, LED Sidelights, OE LED Number Plate Lights, Custom LED strip bootlight.
- Tcochrane92
- Member
- Posts: 650
- Joined: Sat Apr 09, 2016 3:30 pm
- Location: Leamington Spa, Warwickshire, UK
Alarm going off after locked
Thanks guys, bonnet switch is disconnected. Will check back to see if it gets set off
Current: Imola Red 400bhp 640d & Ocean Blue BMW S1000XR Sport SE
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i
- kis
- Lifer
- Posts: 4536
- Joined: Wed Jul 20, 2016 2:33 pm
- Location: Surrey / West Sussex Boarder
Alarm going off after locked
Also can be change left in the handbrake / centre console area. I know it sounds silly! Something to do with the internal sensors and getting a reflection thinking theres a presence in the car while its locked...
My E85 Z4 3.0i SMG
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
- Tcochrane92
- Member
- Posts: 650
- Joined: Sat Apr 09, 2016 3:30 pm
- Location: Leamington Spa, Warwickshire, UK
Alarm going off after locked
No change in the centre console area, not rich enough to just have money lying around
Since disconnecting the bonnet switch, the alarm hasn't been triggered yet... so will give it a week and if it doesn't go off again, I'll get a new bonnet switch!
Since disconnecting the bonnet switch, the alarm hasn't been triggered yet... so will give it a week and if it doesn't go off again, I'll get a new bonnet switch!
Current: Imola Red 400bhp 640d & Ocean Blue BMW S1000XR Sport SE
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i
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- Lifer
- Posts: 5277
- Joined: Wed Feb 19, 2014 3:01 pm
- Location: NW London
Alarm going off after locked
Happy days, sounds like it is that if it was doing it only a few mins after locking and it hasn't since.
3.0si Sport: F10 Illuminated ZHP, Retrofit Cruise, OE Stubby, Gaptech RCH+, Kenwood BT73DAB + Handsfree, HIDs, LED Sidelights, OE LED Number Plate Lights, Custom LED strip bootlight.
- 85genius
- Senior Member
- Posts: 1857
- Joined: Wed Jun 24, 2015 2:20 pm
Alarm going off after locked
I never bothered replacing the switch, all it does us tells you the bonnet is shut, I figured with the size of the bonnet if I don't notice it's not shut I deserve the consequences
Audi quattro driver
NOW SOLD - Ruby Black 3.0 SI Roadster
Previous - E85 2.5 Ti Silver - See avatar photo - R.I.P Destroyed by a Tranny
NOW SOLD - Ruby Black 3.0 SI Roadster
Previous - E85 2.5 Ti Silver - See avatar photo - R.I.P Destroyed by a Tranny
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- Lifer
- Posts: 5277
- Joined: Wed Feb 19, 2014 3:01 pm
- Location: NW London
Alarm going off after locked
I don't agree, the bonnet can be popped open and held with the release catch only and still activate the sensor, so it's use is really for the alarm. If you don't want bonnet alarm coverage then don't replace and/or code out.
3.0si Sport: F10 Illuminated ZHP, Retrofit Cruise, OE Stubby, Gaptech RCH+, Kenwood BT73DAB + Handsfree, HIDs, LED Sidelights, OE LED Number Plate Lights, Custom LED strip bootlight.
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- Senior Member
- Posts: 1084
- Joined: Tue Apr 12, 2016 7:42 pm
Alarm going off after locked
i had same issue and it was the battery giving sensors false readings. i got a top of the line battery after that. previous owner had some tiny cheap small battery in it.
- PhilinZ4
- Newbie
- Posts: 49
- Joined: Thu Mar 30, 2017 8:12 pm
- Location: Portsmouth
Alarm going off after locked
My turn today! Disconnected bonnet switch and it now seems OK...Will pop in to BMW tomorrow to get a replacement
2007 Silver Grey 3.0si
- PhilinZ4
- Newbie
- Posts: 49
- Joined: Thu Mar 30, 2017 8:12 pm
- Location: Portsmouth
Alarm going off after locked
As the stealer wanted just under £38 I think I'll leave it unplugged....
2007 Silver Grey 3.0si
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
- PhilinZ4
- Newbie
- Posts: 49
- Joined: Thu Mar 30, 2017 8:12 pm
- Location: Portsmouth
Alarm going off after locked
I have just emailed BMW asking them to justify almost £40 for a component that would have moved no more than 500 times in its 10 year life (that's at opening the bonnet once a week)
2007 Silver Grey 3.0si
- Tcochrane92
- Member
- Posts: 650
- Joined: Sat Apr 09, 2016 3:30 pm
- Location: Leamington Spa, Warwickshire, UK
Alarm going off after locked
I bet BMW pay under £1 for that part.
Current: Imola Red 400bhp 640d & Ocean Blue BMW S1000XR Sport SE
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i
Past: Silver Grey Z4MR, Silver Grey Z4C & Titan Silver Z4 3.0i