Keyless Entry Transmitters
WARNING: This page is about a different car, the 2011 GMC Acadia, 2011 Chevrolet Traverse, and 2011 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
The keyless entry transmitters are used to lock and unlock the vehicle door while away from the immediate area of the vehicle. The keyless entry system will operate at a distance of up to 60 m (195 ft) away, except for Japanese and South Korean vehicles, which are limited to 4 m (16 feet). Up to 8 transmitters may be programmed to a single vehicle.