See also:

Immobilizer (start inhibitor)
Each of the keys supplied with your vehicle contains a coded transponder. The code in the key is transmitted to an antenna in the ignition slot where it is compared to the code stored in the start ...

Unlocking the vehicle
A keyless drive remote key must be on the same side of the vehicle as the door to be opened, and be within 5 feet (1.5 meters) of the door's lock or the trunk (see the shaded areas in the ...

From outside the vehicle
The remote key locks and unlocks all of the doors and the trunk. Before the vehicle can be locked from the outside with the remote key, the driver's door must be closed. Any other door/trunk th ...