Ok guys, I've got a couple of alarm related questions.
I have a facelift 06 Vectra C estate and have been having alarm related problems for a few months now.
Intermittent false alarms and the dreaded "Safeguard Check" on the display.
I'm pretty sure that I've nailed it down to the alarm siren itself, I thought that the rechargeable battery inside had probably gone knackered and was causing the problem.
However, I've split the siren box and have tested the battery only to find that the voltage at the terminals is a more than healthy 5.3V. (Info on battery states 4.8V)
I know in normal operation the siren should be activated once it is removed from the car and mine is completely silent.
I can only assume that this would mean that there is a fault on the circuit board itself, my first question is, is such a fault with the siren circuit board itself a common problem and secondly, is there any way I can disable the "Safeguard Check" or "Con" the alarm system into thinking that there is a siren connected so as to stop the warning from apprearing on the display every time I turn on the ignition.
I have diagnostics software so if this is an option somewhere within the diagnotics software, I could do this.
I'm quite happy to leave the alarm as it is with the car horn itself being activated as the alarm siren but would ideally want to stop the aforementioned "Safeguard Check" appearing every time I switch on the ignition.