So I've got a Ford focus st and the alarm.keeps sounding randomly and wont turn off by the key . I've read it could be bonnet catch bit I've changed that and still doing it helpppp please driving me insane

 

Some Ford Focus models had some electrical problems . What year is your vehicle?

When working on some alarm systems we would stick a rag in each horn to reduce the noise problem. Until you get it corrected you might consider sticking a piece of rag into each horn . It will lengthen the trip time to the "unwanted location".

 

2007 model .

 

Did you try disconnecting the bonnet sensor ?

 

yeah I've tried that still happening

 

The other sensors for the system need to be checked. If no fault is found, the security module may need to be checked . Good scan tool required to do this.

 

Thank you