|
||
|
20th April 2019, 14:40 | #1 |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Alarm goes off on its own
My saloon alarm keeps going off completely at random - e.g. it can happen once in two weeks or several times in one day. It usually happens when the car is locked but it's also done it when the car is unlocked.*** In all cases the key fob is nowhere near the car.
Once the alarm has gone off, pressing the unlock button on the fob, then the lock button, causes a 'something is open' single beep. I've tried a 60-minute battery disconnect but it still happens. *** I have to disconnect the battery every evening to be 100% sure it doesn't go off in the middle of the night. Last edited by Blink; 20th April 2019 at 15:39.. |
20th April 2019, 15:19 | #2 |
This is my second home
ZT260 #243 (resting) Join Date: May 2010
Location: Prestonpans
Posts: 22,487
Thanks: 650
Thanked 4,624 Times in 3,358 Posts
|
Could be the bonnet switch? Rubber covered button next to the anti freeze label, can be affected by water ingress or the bonnet isn't closing tightly enough. Try lubricating the bonnet catches and adjust the bonnet stops (rubber buffers either end of the slam panel) by turning them clockwise.
|
20th April 2019, 15:29 | #3 | |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Quote:
I'll try tweaking the stops down a tad just in case but the trouble is I can't tell if anything I do has worked or not without waiting weeks (the alarm has only gone off once in the last two weeks). |
|
20th April 2019, 16:15 | #4 |
This is my second home
ZT260 #243 (resting) Join Date: May 2010
Location: Prestonpans
Posts: 22,487
Thanks: 650
Thanked 4,624 Times in 3,358 Posts
|
The water tends to get under the rubber cover rather than through any damage to it. You can remove the switch to check it for water damage by using a credit card or similar, slip it under the rubber cover either side to release the spring catches on the switch.
|
20th April 2019, 17:43 | #5 | |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Quote:
Btw, forgot to say I've got both interior light clusters disconnected - I wonder if that could confuse the alarm system. |
|
20th April 2019, 19:00 | #6 |
Avid contributor
Rover 75 Tourer 2.0 V6 LPG Join Date: Apr 2018
Location: Colchester
Posts: 210
Thanks: 4
Thanked 50 Times in 39 Posts
|
I had something similar going on with my Tourer when I got it a year ago. Alarm kept going off - I too ended up disconnecting the battery at night.
Mine turned out to be door wiring. Even with all doors shut dash often said one was still open. My mate who works in a garage selling second hand cars said he'd had this with cars before. He fixed mine in a couple of minutes. All he did was go around each door,open the door and wiggle the rubber grommet between door pillar and door about,moving the wires about a bit I guess. When he did this to the drivers side rear door and shut that door,the door open icon on dash went out and the alarm hasn't gone off on it's own again since. Might not be that on yours but worth giving all the wires between doors and door pillars a wiggle. Paul |
21st April 2019, 10:17 | #7 | |
Posted a thing or two
Rover 75 Saloon Join Date: Apr 2019
Location: Under the car
Posts: 1,840
Thanks: 210
Thanked 244 Times in 221 Posts
|
Quote:
The other one must be the 'boot open' switch, although I must admit I don't even know where it is (mine's a saloon). |
|
|
|