Alarm going off whilst driving
Alarm going off whilst driving
Author
Discussion

GingaNinga

Original Poster:

390 posts

299 months

Wednesday 13th June 2018
quotequote all
The initial message was deleted from this topic on 02 July 2019 at 15:52

GingaNinga

Original Poster:

390 posts

299 months

Wednesday 13th June 2018
quotequote all
Decided to call The AA as time was of the essence. Unable to reproduce the fault. All is currently well with the world. Any thoughts on what might have happened still gratefully received!

Paulprior

871 posts

127 months

Wednesday 13th June 2018
quotequote all
There is a possibility that one or two of your immobilizer circuits have been bypassed, so when the alarm system goes off it is not having any effect on the car
Asfor the reason of the alarm unfortunately i cannot help you, i know that mine is connected to the door switch circuits, these are little push in pins down at the bottom of where the door meets the body, so i guess a loose / dirty switch or connector would do it maybe

Penelope Stopit

11,209 posts

131 months

Thursday 14th June 2018
quotequote all
You need to disconnect the alarm before your journey

Sardonicus

19,295 posts

243 months

Thursday 14th June 2018
quotequote all
If you lose the ign + live going to the alarm module then it may passive arm on its own frown as it dont have indication that your ign is switched on and that your driving the car scratchchin

Hedgehopper

1,542 posts

266 months

Thursday 14th June 2018
quotequote all
Disconnect the ECU for 30 seconds? Seems to clear many electrical disturbances.

Loubaruch

1,401 posts

220 months

Thursday 14th June 2018
quotequote all
As suggested above it could be due to a variety of causes but not the ECU because that is completely separate to the alarm/immobiliser circuits.


The system was acting as though it had been armed and then triggered by an intruder etc. Once triggered It is quite normal for the siren to only sound in short bursts whereas the indicators will flash continually.


Have your immobiliser circuits been bypassed?


Maybe an intermittent contact in the alarm circuit.

QBee

22,065 posts

166 months

Thursday 14th June 2018
quotequote all
I have had that happen in the past. Most times simply stopping the car, locking and unlocking it, clears the fault. Also, worth checking the bonnet is properly shut, ditto the boot. When you get out and lock the car, your hazards should flash twice, not four times with beeps - that indicates the boot or bonnet sensor is not making contact.

If you cannot get rid of the flashing red light on the dash, it can be worth pushing the little black dongle on the key ring into the socket on the side of the steering column (ignition off, key out), particularly if this coincides with the car appearing to be immobilised and not starting. That one is the immobiliser having got out of synch with the key.

GingaNinga

Original Poster:

390 posts

299 months

Sunday 17th June 2018
quotequote all
Thanks, no reoccurence occurred (currently coming from France) but the boot might have not been closed properly.

Penelope Stopit

11,209 posts

131 months

Sunday 17th June 2018
quotequote all
The boot being left open shouldn't arm the alarm
Have a safe journey
That was a great Le Mans