2011 Lexus RX 350 Owners Manual - Page 309

2-4. Using other driving systems All-wheel drive lock switch (AWD models) All-wheel drive lock mode can be used when a large amount of drive power needs to be applied to all the wheels, such as when the vehicle gets stuck in mud and you need to free it. Press the switch. The torque of the engine is distributed to the rear wheels to the maximum extent possible in accordance with driving conditions. Pressing the switch again cancels all-wheel drive lock mode and returns the active torque control 4WD system to normal mode. (→P. 231) 2 When driving n All-wheel drive lock mode l All-wheel drive lock mode is canceled when the brakes are applied to ensure the ABS and VSC systems operate effectively. l All-wheel drive lock mode is canceled when the vehicle speed exceeds 25 mph (40 km/h). 237