Hazards flashing when locking car?
 

Hi guys, I'm looking for more help.

When I lock the car with the fob or the key the hazards flash 3 times as normal but after a minute or so they start flashing again and don't stop,

Anybody know what causes this?

Thanks,

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You have a relay gone in the BCU. Does the hazards flash constantly all the time ?

Soggy Sounder?

Sounds like the alarm is going but with no sound...

I would go with the soggy sounder as well.

That's the thing, they don't.

They flash 3 times as normal when I lock the car.

Then after a minute or so they'll flash for around a minute or 2 then stop. Then after another minute or so they'll flash again for another minute, then it stops all together.
If I try to lock the doors with a door still open the horn beeps, is that linked to the alarm or is that a separate warning?

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The horn sounds to indicate a mislock

I assume the car in question is the one in your avatar so is a mk2 with a pektron (round) fob.

Sounds like a BCU or soggy sounder fault, I'd start by un plugging the sounder.

trick the alarm to see if it sounds. open your bonnet, put your finger on the bonnet switch located on the left hand side of the inner wing. lock the car with the fob, it will think the bonnets shut. then release the bonnet switch with your finger, the alarm should go off instantly. if only your hazards flash then its your sounder.

Thanks guys, I'll try that tomorrow.

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You could lock you in the car with the fob and try to unlock the driver's door, it should trigger the alarm as well.

Finally got a chance to look at this.

Tried the bonnet open and pressing the switch, let go and not a peep, lights started flashing but no noise.

Next I checked the sounder to which I found it wasn't plugged into anything and I can't see a plug for it anywhere!??

So I would assume it's the BCM as mentioned above, BUT what is a BCM and where is it? Lol

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The wires on my sounder come out the bottom of the unit (you have to remove the header tank to get to the sounder) so its possible if its been disconnected the plug has been taped up or fallen down out of sight. I would check it out to make sure its not damaged and shorting etc first...

As for the BCM, if that is at fault I believe technozen (is that spelt right?) is still doing repairs of them...

Sounds like water in the sounder to me

Well now I'm extra baffled because I have a sounder thing bolted to the back of the engine bay, I'm assuming that's not original?

I'll need to take the header tank off and have a look,
Cheers mate.

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Maybe at some point an aftermarket alarm system was fitted

BCU - Body Control Unit - it's a box full of electronics and relays and hides behind the centre console which has to come out to get it out. It controls much of the car such as drivers window, fog lights, heated rear window, interior lights, horn, central locking and alarm functions.

www.technozen-electronics.co.uk tells you all about it, Paul does same day postal repairs.

Nice one, thanks.

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When I had my soggy sounder syndrome, it was the alarm randomly going off with no hazards flashing.

A friend also had similar, took him a while to get to the bottom of it!

Well I got the sounder off today, found the plug and plugged it in, within 30 seconds it was going bananas!!,

Unplugged it brought it in the house, dried it with the hairdryer and let it dry out, took it back to the car and plugged it in and the same thing happened so I'm assuming the sounder is gubbed.

Is there a fuse or anything I can take out to disable the alarm as a temporary measure?, I don't want the hazards flashing constantly.

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Plugged it back in today and it worked, no lights or alarm, happy days.

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Good news ....

When you took it in to dry it did you open it up?