Manford

Got home,locked the car as usual, 10 mins later and my alarms going off

Disarmed it,checked all the windows and doors were closed,tried to arm it and it just beeps then the alarm goes off.

Checked the light on the dash,it thinks all the doors are closed

Car has standard alarm/immobiliser


Any suggestions?

Ryoishikawa

iTrader: (5)

I have the same problem with a toad alarm now

XDevil666

Low battery I think is a cause, replacement or charger needed!

FuZzBoM

I had same issue on my hawkeye recently when weather got warmer. had a good look round it and noticed bonnet switch mount had been slightly bent backwards. Bent it straight and been perfect since (touch wood)
My only guess is a careless mechanic must have knocked it and sun hitting the car made the bonnet expand? dunno. either way seems to have cured it.

Miller-SoT

iTrader: (2)

Bad/corroded connection on a switch somewhere.

riiidaa

iTrader: (2)

first thought is low battery as suggested

Manford

The car starts ok, its not sluggish or anything.

I will have a look at the bonnet catch, its pain in the a**e! park the car, arms fine 5-10mins later it goes off.

XDevil666

It is the battery

fez the plodder

I had this on my 03 sti...... My other half rang me saying that the alarm was going off at work!!! I blamed her!!! After a couple of days the alarm,immobiliser started to really play up!!! Called the AA as she couldn't start the car !! and was told that there was a lot of radio interference from the trucks!!! Mmm! Anyway took it to the main dealer and they replaced the alarm/immobiliser ecu at a pants down price!! And to be fair sorted it...
That's my story :-)
Hope you get it sorted

Steve's Sti

iTrader: (2)

Had same issue after a bad service

Manford

Ok..... still driving me mad!

Battery is measuring 12.8v, just so I've asked, we are talking the main car battery? there isn't one in the alarm itself?

Taped over the proximity sensors and alarm still goes off after a few mins.

Going to try cable tieing the bonnet switch to see if that makes any difference.

belewski1984

iTrader: (1)

No the alarm will have its own back up battery m8

Manford

Where does that hide?

belewski1984

iTrader: (1)

What year and model of car?

Manford

2003 impreza wrx saloon

What type of battery is it? Il make sure I have one to swap it with when I pull everything to bits.

AWG

iTrader: (6)

Happened to me mate new battery sorted it out

Manford

Fingers crossed thats the issue, but where is the alarm box?

What type of battery is it?

Manford

????

scotty boy 80

iTrader: (5)

Had the same problem when the car battery was on its way out

Davec30

iTrader: (2)

Car battery for me aswell. I hadn't used the car for a while then woke up at half 2 in the morning with the alarm going off had to go into my garage, get a spanner and disconnect the battery. Charged it the next day and all has been fine since ! (Car back on the road

Manford

Still got the issue, car still starts on the button evertime so struggling to believe its the car battery.

Going to hopefully (weather permitting) remove the scuttle panel and have a look at the alarm, maybe its internal battery has died.

Matt_STi

Mine did this the other day, I changed the battery in the keyfob and its not done it since.

Don Clark

First off, do you know the PIN for the keypad? Useful to know if you start playing around.

AFAIK the alarm backup battery is in the siren module located under the bonnet rather than in the actual alarm ECU unit.

Similarly these links are useful:-

http://www.scoobypedia.co.uk/index.p...RemoteControls

http://www.scoobypedia.co.uk/uploads...m30_manual.pdf

http://www.scoobypedia.co.uk/uploads..._m30_codes.pdf

The thread linked below is also worth a read through for information

http://forums.sidc.co.uk/topic/96215...larm-problems/

DTVHSR

Check the L shaped plastic alarm actuator on the boot next to the lock, check to see it is still working on the spring, press it up and down.

Go and check each actuator round the car, press them in several times each and check the bonnet one also.

Would upload a photo but the site is under maintenance currently.

Seano1

I had this fault many years ago with a top of the range Clifford
this went on for months ended up everything was changed through warranty and it still was going off but never during the night ...
So in the end I had to write down times and places it was going off
Then I realized it was only ever at home this was happing
then it was only if it was the first car in the drive nearest the house/kitchen
Then I was making something in the microwave one day and as I hit start the car alarm went off!!! Tested this a few times and hey presto that was the problem the microwave was interfering with the alarm signal!!!phoned the supplier who were over the moon we had got to the bottom of it
Never parked next to the kitchen door again problem solved!!!!

Ayde

iTrader: (6)

It will be the internal battery in the siren under the scuttle. There could possibly be water ingress too so the circuit may be fried. Wipers off, scuttle off, IIRC it's a 10mm bolt to remove the siren, split the unit check for water. As a temporary measure you can just disconnect the plug to the siren, the alarm will still function just not sound.

I had the same issue, sourced a siren from a breakers for £15. The replacement siren had sealant inside the unit where it enters the siren casing and the mounting bracket is slightly different. Wonder if they have been manufacturer modded due to water ingress issues? I think these alarms where fitted to BMW's too.

Ayde

iTrader: (6)

Just to add for the cost, get yourself a replacement siren and a 9v rechargeable battery. For the price you may as well swap it out while you're in there rather than messing around stripping it down again.

Manford

I've used the codes, 8 flashs from the dash led, bonnet circuit.

Reset the alarm whilst playing around, played with the switch and it worked. Drove home from work, locked the car.....it went off 10mins later. it now arms without beeping at me, which has to count as progress, but its goes off after 30-45 secs from alarming the car.

Sat morning, checked the codes again, 8 flashs, bonnet circuit. Took switch off and checked with meter, seems ok. Cable tied switch down and armed alarm, worked.shook the switch to check for any loose connections, nothing.

Went out sunday......alarm now going off again....bonnet circuit still..

I'm going to try bypassing the switch and just shorting it out, at least see if that gives me the alarm working reliably, then il worry about sorting the switch.