Lexus GS430 User Manual page 392

STARTING AND DRIVING
CAUTION
Be careful when downshifting on a slippery surface.
The abrupt change in engine speed could cause the
vehicle to skid or spin.
368
(d) Backing up
G31028
" 1 Brake pedal
2 "R" (Reverse) position
1. Bring the vehicle to a complete stop.
2. With the brake pedal held down with your foot, shift the
selector lever to the "R" position.
NOTICE
Never shift into reverse while the vehicle is moving.