2010 Lexus HS 250h Owners Manual - Page 229

2-4. Using other driving systems n Turning off both TRAC and VSC systems To turn the TRAC and VSC systems off, press and hold the button for more than 3 seconds while the vehicle is stopped. A message will be shown on the multi-information display and "VSC OFF" indicator will come on. Press the button again to turn the systems back on. 2 When driving n Sounds and vibrations caused by the ABS, brake assist, VSC and TRAC l A sound may be heard from the engine compartment when the hybrid system is started, just after the vehicle begins to move, if the brake pedal is depressed repeatedly, or 1-2 minutes after the hybrid system is stopped. 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 EPS operation sound When the steering wheel is operated, a motor sound (whirring sound) may be heard. This does not indicate a malfunction. n Reactivation of the TRAC /VSC systems Turning off the hybrid system after turning off the TRAC/VSC systems will automatically reactivate them. n Reactivation of the TRAC system linked to vehicle speed When only the TRAC system is turned off, the TRAC system will turn on when vehicle speed increases. However, when both TRAC and VSC systems are turned off, the systems will not turn on even when vehicle speed increases. 227