Originally Posted by JeepMe
Does anyone know how remote start systems are able to over ride the system and allow it to start?
There are a couple of ways; the older systems from DEI used an add-on module that placed a collar around the key slot on the column, and transmitted the RFID to the SKIM. I had issues with it in my old 2003 GC (purchased in 05 and wrecked in 09) in that the collar around the key would loosen and slip in hot weather, causing the Sentry light to flash and the car to stop.
I recently purchased another 2003 GC Laredo, and had a new alarm system (Viper 5901) installed. Instead of a transponder module AND a carbus adapter module being used, the dealers are now selling a programmable module that somehow bypasses the SKIM. No programming of the SKIM needed! Don't know how, but it works great.