Keyless Entry System Description and Operation: Transmitter
WARNING: This page is about a different car, the 2009 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
The transmitter unit is a battery powered, water resistant, radio frequency signal generator. Two transmitters are provided with each vehicle. The receiver is capable of recognizing up to four transmitters. Replacement transmitters for the vehicle may be obtained, however the receiver must be reprogrammed to accept the new transmitter. Refer to Transmitter Programming .