sigma car alarm fault on mercedes slk?

i have a fault that when i switch the alarm off using the key fob the alarm goes off and does not stop till i have pressed the key fob several times this fault came on the same time as the courtesy light stopped operating from the passenger door. I have changed the key fob batteries an the door switch but it does not stop the faults. Thanks
derek, February 2007


done
immobiliser won`t allow me to open car when i click unlok on fobr bmw 1995 3 series

mick, May 2011
link Click here to see other fixes for Mercedes.