Member Since: 07 Apr 2012
Location: Germany
Posts: 36
Car alarm....bonnet sensor?
Hi lads,
I had a few embarrasing incidents recently when the car alarm just came on even though nobody had touched the car. I suspect the bonnet sensor because when I checked on the dashboard it said "bonnet open" even though it was definitely closed. Is that a common fault? I located it on the left lock(standing in front of the car) and I flooded it in WD 40. Will that do the trick or will I have to order a new sensor? Or is there another fix?
Greetings from Germany and stay healthy everybody,
Ralph
27th Mar 2020 4:02 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4537
Yes, very common.
You can temporarily bridge the two wires with a paper clip, or a wire with spades on, to stop the alarm.Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
27th Mar 2020 4:13 pm
The Wild Rover
Member Since: 07 Apr 2012
Location: Germany
Posts: 36
Cheers Richard!
I just found this video which might be handy if anybody has a similar problem:
I just do the same as those guys and give it a good clean. If that doesn't do the trick, does anybody know if you can buy the actual switch assembly without the lock separately? So far I have only found the complete lock assembly, but the lock is fine of course and swapping out the micro switch looks dead easy.
take care,
Ralph
27th Mar 2020 5:12 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4537
worth a go!Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
27th Mar 2020 7:17 pm
Yargo
Member Since: 25 Dec 2020
Location: Europe
Posts: 326
I had same problem. Fixed in 5 min. Remove bonnet latch, remove switch from latch, there is a tiny metal clip - bend it up slightly and assemble.
29th Dec 2020 12:16 pm
Ranger Rover
Member Since: 16 Oct 2023
Location: Houston
Posts: 4
Bonnet Open Message and Alarm
I have had the same problem, but only early in the morning, and only when I temperature cools.
The switch has now been replaced twice, and I have spent hours adjusting the hood height and the switch/ lock height.
All to no avail.
Thanks in advance for any help,
25th Nov 2023 3:00 pm
kajtzu
Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6766
Oops, wrong thread.
26th Nov 2023 8:00 pm
florent
Member Since: 04 Apr 2009
Location: Bordeaux
Posts: 102
Thanks for the tip, removing the sensor, cleaning it and slightly bending upwards did the trick.
My alarm went ringing & I had the message hood open sometimes (when it was not).Serial Land Lover - (3 Defenders, 8 Range Rovers, 2 Freelanders, 4 D3s... to be continued)
9th Dec 2024 9:59 am
reb78
Member Since: 21 Apr 2018
Location: Herts
Posts: 228
rrhool wrote:
Yes, very common.
You can temporarily bridge the two wires with a paper clip, or a wire with spades on, to stop the alarm.
Haha - that was temporary for me about 7 years ago.... its still temporary.
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worth a go!
