2009 Lexus LS 600h User Guide - Page 8

Topic 1 Hybrid System Hybrid System Your vehicle is a hybrid vehicle. It has characteristics different from conventional vehicles. Be sure you are closely familiar with the characteristics of your vehicles, and operate with care. The hybrid system combines a gasoline engine and an electric motor (traction motor) according to driving conditions, improving fuel efficiency and reducing exhaust emissions. For details, refer to the "Owner's Manual". n Hybrid system indicator gauge Displays the output and regenerative level of the hybrid system. l By keeping the needle within the "ECO" zone, more fuel-efficient driving can be achieved. l The "CHG" zone indicates regeneration status. 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", "S" or "R". 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 under the vehicle. l Sounds may be heard from the hybrid battery (traction battery) behind the rear seat when the hybrid system starts or stops. l Sounds may be heard from the transmission when the hybrid system starts or stops. l Engine sounds may be heard when accelerating sharply. l Sounds may be heard due to energy regeneration when you depress the brake pedal. l Vibrations may be felt when the gasoline engine starts or stops. l You may hear cooling fan sounds coming from the air intake vents behind the rear seat. 9