In Reply to: Re: keyless entry posted by David Morton on August 11, 2001 at 04:21:45:
I too have the Sigma system. Not sure if it double locks but it closes windows & sunroof. Catch is, I had mine fitted professionally as part of my insurance companies requirement for at least a category II immobiliser. I decided to go the whole hog and get the all singing, all dancing one. Cost a total of almost £300! The insurance wouldn't accept it if it was fitted by me. Apparently Sigma is BMW approved too, but this might just be a selling plug by the fitters.