My brother is having the same problem (Allion 260) and we have done all the posible things like, Changing the battery, Clean the circuit etc but no luck, He got his second remote key as well, so i adviced him to use that and try, very first day the car responded fine but, today morning, again the same problem started. He unable to start, lock or unlock the car. Note: some times, the car responds and getting lock and unlock and able to start the car (pushbutton start)
Since I tried all the posible things, what is your next advice for me? Security sensor problem? Note: This is the factory fitted Allion remote key system. Not locally fitted one.