Electronic access system for motor vehicle combines retrofitted passive electronic access system with remote access system already in vehicle

摘要

The electronic access system (1) includes a stationary region (2) in the vehicle, and a mobile region (3) on the key side, and operates a lock (25). An electronic key (4) has a switch part (5) with a transponder to receive a passive access authorization interrogation, and a second switch part (6) with remote control, coupled to the first switch part for active or passive interrogation of an access control signal (24). The retrofitted passive system (14) has two control units (16, 22) in remote communication.