bmw 520 sigma immobiliser help!!
Hi i have got a 520 i se. g reg. come s with standard sigma alarm / immobiliser. Normally wen i get in car put ignition on so service light s come on then press key fob & led on dash flashes once & i can then go start car.
This didnt happen the other day... and i cant figure out why. i have changed batteries with no joy. when i got car there was a pin number written on back of sigma manual so i have tried putin that in the keypad. still no joy. can anyone help me or give me ADVICE to try troubleshot this problem. or is there any way i can deactivate the immobiliser so i can move the car as i am wanting to sell the car. HELP ME!!