If you are experiencing trouble logging in please email admin@xseries-forum.com. Also, please check your junk mail for any forum notifications (and add admin@xseries-forum.com as a contact to avoid mail going to spam)

relentless Alarm going off... ??

Discuss your latest mods or ideas, and anything to do with the BMW X5 (E53).
Post Reply
X5-D-Sport
Snr Member
Snr Member
Posts: 1278
Joined: Sun May 25, 2014 11:13 pm

relentless Alarm going off... ??

Post by X5-D-Sport » Sun Jul 11, 2021 8:45 pm

Good evening Ladies,
My E5 has recently taken to firing the alarm time after time.

I have looked around inside for bugs flying about or a rogue spider, but none of those.

It has become such a nuisance that I usually have to leave the vehicle unlocked.

I have chased the usual things like....
it has a recently new battery & holding good voltage, all door sensors work & trigger the interior light properly when opened, as does the tailgate, & I have given the bonnet sensor some abuse to see if it is that... & will disconnect it & see it that stops the issue.

Any one know of any other spurious reasons the alarm will trigger... ?

regards to all
Grant B

User avatar
X5Sport
Global Moderator
Global Moderator
Posts: 17303
Joined: Fri Sep 03, 2010 4:09 pm
Location: Planet X6......

relentless Alarm going off... ??

Post by X5Sport » Sun Jul 11, 2021 9:30 pm

Previous reported incidents usually finger the bonnet sensor.
:ant: Never anthropomorphise computers. They hate that.

User avatar
Alan Gunn
Snr Member
Snr Member
Posts: 1091
Joined: Thu Dec 08, 2016 10:32 pm
Location: Anglesey North Wales

relentless Alarm going off... ??

Post by Alan Gunn » Mon Jul 12, 2021 6:35 am

Mine went the same i just unplugged the bonnet sensor and no more fals triggers.

User avatar
Greydog
Member
Member
Posts: 712
Joined: Fri Mar 08, 2013 1:26 pm
Location: West Sussex

relentless Alarm going off... ??

Post by Greydog » Mon Jul 12, 2021 7:07 am

Any other symptoms that may not seem related? radio swapping stations, indicator sounder silent, when mine started throwing the odd wobbler it turned out to be the LCM starting to fail. First sign was running a Fault code read and no communication with the LCM which in turn prevents comm's with several units

X5-D-Sport
Snr Member
Snr Member
Posts: 1278
Joined: Sun May 25, 2014 11:13 pm

relentless Alarm going off... ??

Post by X5-D-Sport » Mon Jul 12, 2021 8:09 am

UPDATE...
unplugged the bonnet sensor switch....
No more false alarms...
Thank you people, much appreciated.

User avatar
Alan Gunn
Snr Member
Snr Member
Posts: 1091
Joined: Thu Dec 08, 2016 10:32 pm
Location: Anglesey North Wales

relentless Alarm going off... ??

Post by Alan Gunn » Tue Jul 13, 2021 6:04 am

Strang how that sensor fails i think it has failed on every car i have had.
I do tend to keep my cars a few years.

sapphireblack
Member
Member
Posts: 929
Joined: Mon Apr 18, 2011 8:30 am
Location: Kent & Zakynthos (Greece)

relentless Alarm going off... ??

Post by sapphireblack » Tue Jul 13, 2021 6:27 am

This brings back memories, had the same issue on an E53.

Leslie
Member
Member
Posts: 761
Joined: Sat Sep 29, 2018 10:58 am

relentless Alarm going off... ??

Post by Leslie » Tue Jul 13, 2021 8:14 am

Alan Gunn wrote: Tue Jul 13, 2021 6:04 am Strang how that sensor fails i think it has failed on every car i have had.
I do tend to keep my cars a few years.
It's maybe because you actually lift the bonnet unlike 99% of drivers these days lol :thumbsup:

User avatar
X5Sport
Global Moderator
Global Moderator
Posts: 17303
Joined: Fri Sep 03, 2010 4:09 pm
Location: Planet X6......

relentless Alarm going off... ??

Post by X5Sport » Tue Jul 13, 2021 11:41 am

.........what? That big metal panel in front of me opens?
:ant: Never anthropomorphise computers. They hate that.

X5-D-Sport
Snr Member
Snr Member
Posts: 1278
Joined: Sun May 25, 2014 11:13 pm

relentless Alarm going off... ??

Post by X5-D-Sport » Tue Jul 13, 2021 12:37 pm

i pulled the sensor on Sunday evening & no false alarms since -
I prized it open, & pinned it out.... the connections were spotless, but the internals were plastic on plastic moving parts & were partially jammed in place & after i had it on the bench for a while, I heard it click... hence triggering the alarm...

Leslie
Member
Member
Posts: 761
Joined: Sat Sep 29, 2018 10:58 am

relentless Alarm going off... ??

Post by Leslie » Tue Jul 13, 2021 3:37 pm

X5Sport wrote: Tue Jul 13, 2021 11:41 am .........what? That big metal panel in front of me opens?
Yes the front "boot* opens but you can't put any groceries in there as it's too hot :rofl:

User avatar
Greydog
Member
Member
Posts: 712
Joined: Fri Mar 08, 2013 1:26 pm
Location: West Sussex

relentless Alarm going off... ??

Post by Greydog » Wed Jul 14, 2021 7:31 am

Thought it was a Dealer access only :rofl:

X5-D-Sport
Snr Member
Snr Member
Posts: 1278
Joined: Sun May 25, 2014 11:13 pm

relentless Alarm going off... ??

Post by X5-D-Sport » Mon Jul 19, 2021 10:47 pm

well people... removing the bonnet/hood sensor switch definitely solved the false alarm triggers.
Many thanks for the input.

Have a great week
Grant B

Post Reply