Car alarm keeps going off!

caevans

Hi everyone, advice needed please. Recently bought a Honda civic 05 plate. The last few days the alarm has been going off at least once a day. We live in a quiet estate so no passing traffic triggering this. !
Is there anyway to reset the alarm?
Thanks!

Hintza

Close the air vents to recirculate and report back.

caevans

Ok.
Paranoid as we don't have a great deal of luck with car alarms! Previous 2 cars both developed problems and had to have a lock on one of the doors replaced. 3rd time unlucky?!
Hoping that the garage we bought from are willing to have a look and fix....

TrickyWicky

Might be a battery voltage that fluctuates. Most alarms have a backup battery and when they sense the voltage is doing weird things while the alarm is active they'll start screaming.

Mine does it in the middle of the night sometimes - PITA as its infra red controlled so I have to run out to it to reset it.

fivetide

As above - you haven't caught the courtesy light in the boot or anything like that have you?

Could also be a battery struggling a little bit, do you know when it was changed? A drop in power might well set the alarm off. I had that issue with a car once. New battery - problem solved but not an expense you want to go to unless really needed!

5t.

Strider590

2005 car, mostly likely never had a new battery..... My first port of call would be the car battery itself (because it's easy to check the voltage drop overnight). Could be that over night it loses just enough charge to make the alarm think somebody is messing with it.

The alarms own backup battery could be faulty too = same result

Alarm interior sensors, try turning them off, there should be a button to do this (if you read the manual), so that you can lock/alarm the car with the windows open, or with children/pets inside (temporarily of course).

Door switches, but i'd have expected them to start playing up more over winter, before/after rain.

avantra

As above but also check for spiders that might live in this car and triggers the over sensitive volumetric alarm.

Easy to check like Hintza said earlier, close vents, set heating to maximum and fry them.

Notmyrealname

On my Mondeo it was a faulty bonnet switch.

caevans

Thanks everyone, the garage we bought it from are going to take a look but will run through the suggestions from here first

Stephen_Leak

If it's got interior sensors, apparently even the air heating up and moving around inside the car can set them off. And it has been unseasonably warm for the past few days.

King_Nothing

Notmyrealname wrote: »

On my Mondeo it was a faulty bonnet switch.

Same for my Focus.