2010 Toyota Highlander Owners Manual - Page 249

2-4. Using other driving systems n EPS operation sound When the steering wheel operates, a motor sound (whirring sound) may be heard. This does not indicate a malfunction. 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 engine off. The system should return to normal within 10 minutes. n If the slip indicator comes on...It may indicate a malfunction in the Enhanced VSC and TRAC. Contact your Toyota dealer. 2 When driving CAUTION n The ABS does not operate effectively when l Tires with inadequate gripping ability are used (such as excessively worn tires on a snow covered road). l The vehicle hydroplanes while driving at high speed on wet or slick road. n Stopping distance when the ABS is operating on the wet or slick roads The ABS is not designed to shorten the vehicle's stopping distance. Always maintain a safe distance from the vehicle in front of you in the following situations. l When driving on dirt, gravel or snow-covered roads l When driving with tire chains l When driving over bumps in the road l When driving over roads with potholes or uneven roads 221