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Autowatch Alarm Keeps Going Off At Random?

bozodos

By bozodos,
in Car Audio & Electrical

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bozodos Grand Master

bozodos

Posted
Posted

As per the title, I've only noticed this at work recently since people keep ringing me to tell me that it goes off for a minute or two before going silent again and remaining armed.

Does anyone know whereabouts I should start checking things to figure out what's causing it?

RANDY Veteran

RANDY

Posted
Posted

The shock sensor might do it.

The short alarm is supposed to be a "warning".

Mine went off once or twice when some little 4cyl with a huge exhaust pulled up next to my car parked on the road. If this is why yours is going off, it's due to the shock/impact sensor.

The impact sensor should be cabletied to the steering column. You *should* be able to see/access it by crawling on the drivers footwell floor on your back. There is two adjusters from memory... I can't remember why there are two, but i'm sure it's a fine-tuning thing.

Unless you can consult a pro, i'd just lock/arm your car then kick your front tyre really hard until it goes off.... Wind one of the adjusters up a little, then retest and see if it's more or less sensitive. Go the other way if it's too sensitive.

Failing that, get an alarm installer to readjust it for you. =-]

Chris Rogers Grand Master

Chris Rogers

Posted
Posted

depends when it happens though. if its on arming then something is open. if its after a while and you get the chirp then the shock sensor felt something. my usual setting on these things is fairly hard so trucks do not set them off but a good kick will.

  • 2 weeks later...
R.3.2.G.T.R Grand Master

R.3.2.G.T.R

Posted
Posted
argh just remembered to check the thread! Chris: I'll have a look and get back to you; the other thing is that it seems to happen when the interior gets really hot, not sure if it's coincidence or something related!

interesting, mine may be suffering the same fate

Carbon 34 Grand Master

Carbon 34

Posted
Posted

your exhaust pipe is probally creaking/ticking on cool off, or the plastic in the car is, if your car has a glass break sensor it's picking up the temp difference in the air from hot to cold or wind noises, they sense the pressure drop if a window is shattered on most, some are microphones set for a certain freq. and pick up birds /cats claws on the roof.

whom ever installed it might have it hooked to a wire harness that see's power for a certain time period after shutdown, the current flow can cause a magnetic disturbance in the sensor. when the current stops. random goiing off after a few min of sitting

or it may have sagged into a bad spot after installed ?

move the sensor to another location.

  • 1 month later...
Stagea_Neo Experienced

Stagea_Neo

Posted
Posted

maybe turn each adjustable sensor to minimum 1 by 1.

im assuming sensors can be turned off/on, try doing that also 1 by 1.

also assume the led diagnostic tells u what's being triggered.

process of elimination. then look at best solution to prevent it occuring again.

i'll leave other suggestions to those who know better, as per some of the previous posts.

would low car battery, loose/dirty terminals cause whacky stuff?

lol with trucks/or big exhausts, see it happen all the time.

ps. my old vision alarm in r31 had a ball/sphere thing in it for vibration sensing, autowatch same or more advanced better technology.

also my stoopid microwave sensor would detect a slow moving tennis/squash ball rolling under car on lowest setting.

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