See also:

Keyless locking and unlocking
Range of the keyless drive remote key–5 ft (1.5 meters) This system makes it possible to unlock and lock the vehicle without having to press any buttons on the Personal Car Communicators (P ...

Range
The remote key has a range of approximately 60 ft. (20 m) from the vehicle. NOTE Buildings or other obstacles may interfere with the function of the remote key. The vehicle can also be locked ...

Limitations
Even if a fairly small section of the screen image appears to be obstructed, this may mean that a relatively large area behind the vehicle is hidden and objects there may not be detected until the ...