Other information:
The system becomes ready to start searching for lane markings when all the
following conditions are met:
The vehicle is traveling between about 45 and 90 mph (72 and 145 km/h).
The vehicle is on a straight or slightly curved road.
The turn signals are off...
Adjust the driver's seat as far back as possible
while allowing you to maintain full control of
the vehicle. You should be able to sit upright,
well back in the seat and be able to
adequately press the pedals without leaning
forward, and grip the steering wheel
comfortably...