See also:

Seat belts
Make sure that all occupants are wearing their seat belts before driving the vehicle.  - Correct use of the seat belts 1. Extend the shoulder belt so that it comes fully over the shoulder, ...

Initialization
Items to initialize The following items must be initialized for normal system operation in cases such as after the 12-volt battery is reconnected, or maintenance is performed on the vehicle. ...

Driving in vehicle-to-vehicle distance control mode
This mode employs a radar sensor to detect the presence of vehicles up to approximately 400 ft. (120 m) ahead, determines the current vehicle- to-vehicle following distance, and operates to mainta ...