Suddenly when locking my car with the fob, the hazards flash twice and then a second or two later, there is a continuous tone that does not stop.

I then disconnected the alarm horn and used the key for a couple of months as I had already bought a new Alarm Control Unit, Horn and fobs including a Master (I was down to just one fob with no Master) and knew I would be fitting it as soon as possible.

Anyway, I have now fitted it and have the exact same problem. I did notice that one of the bonnet closed switches had broken but I put it back together and still have the same problem.

Could this be the issue and if so, does anybody have any bonnet switches in good condition for sale? If not, what else could be the problem.

Thanks in advance.