Assume that for anything new enough to have keyless entry, the answer is no. The big switchover was in '96 when OBDII/CAN bus became mandatory. At that point i

Assume that for anything new enough to have keyless entry, the answer is no. The big switchover was in '96 when OBDII/CAN bus became mandatory. At that point it became pretty cheap to do things electronically, often cheaper than mechanically, so lots of things started switching over around then.