1999 Lexus LX 470 Owners Manual - Page 374

To change the high mode to normal, push the height select switch on the "B" side once. To change the low mode to normal, push the height select switch on the "Y" side once. D Selecting the low mode: Push the height select switch on the "B" side while the vehicle is stopped. To change the high mode to low, push the switch twice. To change the normal mode to low, push the switch once. (e) Turning off the active height control suspension NOTICE Do not select the low mode on bumpy roads. If the underbody of the vehicle touches the rugged road surface, the vehicle may be damaged. Even if the engine is stopped while the vehicle height is being lowered, the operation continues for up to 12 seconds.