2007 Lexus RX 400h Owners Manual - Page 168

2-4. Using other driving systems When the VSC/traction control are operating If the vehicle is in danger of slipping, or if the front wheels (2WD models) or all wheels (AWD models) spin, the slip indicator light flashes to indicate that the VSC/ traction control have been engaged. A buzzer (intermittent) sounds to indicate that VSC is operating. n Sounds and vibrations caused by the ABS, BA, VSC and traction control l A sound may be heard from the engine compartment when the hybrid system is started or just after the vehicle begins to move. This sound does not indicate that a malfunction has occurred in any of these systems. l Any of the following conditions may occur when the above systems are operat- ing. None of these indicates that a malfunction has occurred Vibrations may be felt through the vehicle body and steering. A motor sound may be heard after the vehicle comes to a stop. The brake pedal may pulsate slightly after the ABS is activated. The brake pedal may move down slightly after the ABS is activated. n Reduced effectiveness of EPS The effectiveness of EPS is reduced to prevent the system from overheating when there is frequent steering input over an extended period of time. The steering wheel may feel heavy as a result. Should this occur, refrain from excessive steering input or stop the vehicle and turn the hybrid system OFF. The system should return to normal within 10 minutes. 146