Alarm malfunction
Alarm malfunction
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Dr Mike Oxgreen

Original Poster:

4,469 posts

196 months

Wednesday 6th April 2011
quotequote all
Yesterday when I got to work (in the other car), I got a call from my wife: the TVR's alarm was sounding.

I told her to fetch the spare key fob, which I know has a fresh battery in it, and stop the alarm with that. But it just locked and unlocked the doors normally, with the siren still sounding.

So I told her to try unplugging the battery charger (Accumate) and try again. The alarm stopped, although she tells me that it just seemed to stop of its own accord rather than in direct response to the key fob. So unplugging the Accumate could have been a red herring.

When I got home, I checked it out and found that everything was normal, except that the alarm siren no longer works. If I arm the alarm and then lift the bonnet, it doesn't sound, although the left-hand indicator repeater flashes. Similarly if I take the roof off and arm the alarm, then reach in and wave my hand about the siren doesn't sound but I can hear a relay clicking and that left-hand repeater flashes.

Everything else is normal. I took the car for a drive (any excuse!) and it's now back on the Accumate with a green light.

Any ideas what's gone wrong? It's the standard Meta alarm.

sparkesp

298 posts

226 months

Wednesday 6th April 2011
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Hello Mike,

I had a similar problem to you a couple of years ago. In my case, the hazards would just switch on as I was driving, and no amount of pushing the switch on the dash would turn it off.

Turns out the alarm was arming as I was driving, and that the siren was shorted. The short in the siren was randomly enabling the alarm.

Aparently a common issue with the original sirens, given that they are exposed to all the water and rubbish you pick up at the front of the car.

I took a trip to Carl Baker - http://www.tvruk.tv/index.html. He reprogrammed the alarm, replaced the siren with a better one and no problems since.

1998 4.0l BTW.

Hope this helps.

Peter.