Bizarre alarm problem

Bizarre alarm problem

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sparkythecat

Original Poster:

7,905 posts

256 months

Friday 19th August 2016
quotequote all
Car has been parked in the garage for 2 weeks, unlocked and without the alarm set.
A couple of days ago, the alarm went off and only stopped when I locked the car using the fob. Now every time I unlock the car using the fob, the fecking thing activates at its ear shattering loudest. It only stops when I lock the car again.

Any pointers or suggestions would be appreciated.

sparkythecat

Original Poster:

7,905 posts

256 months

Sunday 21st August 2016
quotequote all
Not having had time to sort this out, I was content with the fact that when it was locked and the alarm set, it wasn't going off, even though though this meant I couldn't drive it until it was fixed.
However, at silly o'clock this morning, the alarm went off again and no amount of pressing the fob would stop it. The fob was locking and unlocking the car, and the siren was changing tone on each press, as though switching from main battery to back up battery.
After five minutes of frantically and unsuccessfully trying to spanner the vehicle battery terminals loose in the footwell, whilst in a fit of blasphemous rage and wearing only my underpants, the bloody thing inexplicably stopped!

So presently, I don't know whether it's armed or disarmed and when it's likely to go off again. I need to wait until later in the morning before I start pressing buttons again. In the mean time, I needed to find out more about the alarm system, which in 14 years of ownership has presented no problem to date.

The vehicle handbook is no use as the alarm instructions in there refer to a fob with multiple buttons and mine has only one.
So how do I find out what sort of alarm system I've got? Where the control unit is buried and where can I get help fault finding?


sparkythecat

Original Poster:

7,905 posts

256 months

Sunday 21st August 2016
quotequote all
It's just gone off again!!

Now fully clothed, I've disconnected the vehicle battery. This I presume resulted in the siren running on the back up battery, which must be fubarred as the siren tone went very slow and quiet before giving up completely.

Any pointers or help would be much appreciated


sparkythecat

Original Poster:

7,905 posts

256 months

Sunday 21st August 2016
quotequote all
Thanks for that spaceman, siren now disconnected.

What now, how do I disassemble or otherwise check the health of the siren battery?







Important note to self: When disconnecting the battery, always leave a window open and/or the boot unlocked!!!

sparkythecat

Original Poster:

7,905 posts

256 months

Sunday 21st August 2016
quotequote all
Thanks for your input guys. I'm happy with the vehicle battery and connections. Even though it's not been started for a fortnight, the engine cranks over very quickly and easily.
Appreciate the helpful link to abacus alarms. The bottom nut is rusted onto the siren bracket, but when I do get it off, I'll disassemble the siren and see what I find.