Operation CHARM: Car repair manuals for everyone.

False Alarm






The armed alarm is proof against the following:
- Jolting the car.
- Shaking or rocking the car.
- Wind (external pressure waves)
- Automatic switching on and off of other electrical equipment in the car.
- External noise.
- Changes in the internal/external light intensity.
- Air flow and turbulence inside the car.
- Temperature changes inside the car.
- Fan noise from original/extra heaters inside the car.
- Outside noise propagated through the body to the inside of the car (e.g. rain and hail).


Important: This is the case provided that all doors/sunroof/ windows in the cabin are closed.