2011 Lexus RX 450h Owners Manual - Page 8
2011 Lexus RX 450h Manual
Page 8 highlights
n Regenerative braking The motor generator converts kinetic energy to electric energy when: l The accelerator pedal is released. l The brake pedal is depressed with the shift lever in D or S. n Sounds and vibrations specific to a hybrid vehicle There may be no engine sounds or vibrations even though the vehicle is able to move. Always put the shift lever in P when parked. The following sounds or vibrations may occur when the hybrid system is operating, and are not a malfunction: l Motor sounds may be heard from the engine compartment. l Sounds may be heard from the hybrid battery (traction battery) under the rear seat when the hybrid system starts or stops. l Sounds from the hybrid system may be heard when the back door is open. l Sounds may be heard from the hybrid transmission when the engine is started or stopped, or while the engine is idling. l Engine sounds may be heard when accelerating sharply. l Sounds may be heard due to regenerative braking when the brake pedal is depressed and accelerator is loosened. l Vibrations may be felt when the gasoline engine starts or stops. l Cooling fan sounds may be heard from the air intake vents under the rear seat. 8