2006 Lexus LX 470 Owners Manual - Page 301

STARTING AND DRIVING ACTIVE HEIGHT CONTROL SUSPENSION (AHC) This active height control suspension controls the vehicle height depending on the vehicle driving condition. Select your desired height among the "HI" (high), "N" (normal) and "LO" (low) modes with the height select switch. CAUTION The "HI" (high) or "Extra high" mode should be used for severe off−road driving condition only. Because the vehicle's center of gravity is higher in this setting, the vehicle may become unstable when turning abruptly, resulting in an accident. When the four−wheel drive control lever is put at "L", this mode may change to the extra high mode automatically in accordance with the driving condition. 31X600 When the vehicle exceeds the specified vehicle speed, the vehicle height changes to the following: With the four−wheel drive control lever at "H" and at the vehicle speed of 30 km/h (19 mph) or over, the normal mode is automatically selected. With the four−wheel drive control lever at "L" and at the vehicle speed of 50 km/h (30 mph) or over, the vehicle height becomes automatically about 25 mm (1.0 in.) higher than the normal mode height. If the vehicle speed is lowered about 20 km/h (12 mph) or less after that, the high mode automatically resumes. Extra high mode This mode is automatically selected from the high mode with the four−wheel drive control lever placed in "L" position depending on the vehicle driving condition. If the vehicle becomes stuck, the vehicle height rises automatically to the extra high mode (slightly higher or at about 70 mm (2.8 in.) higher than normal mode height). 279 (a) Vehicle height modes D "HI" (high) mode The vehicle height is about 40 mm (1.6 in.) higher at front and about 50 mm (2.0 in.) higher at rear than the normal mode height. This mode is suitable when driving on bumpy roads and through water. This mode is available when the vehicle speed is under about 30 km/h (19 mph).