2003 Toyota Sequoia Owners Manual - Page 560

03_SEQUOIA_U (L/O 0301) Active traction control system (four −wheel drive models) In the following cases, contact your Toyota dealer: The active traction control system automatically helps prevent the spinning of 4 wheels (4WD mode) or rear wheels (2WD mode) when the vehicle is started or accelerated on slippery road surfaces. When the ignition key is turned to "ON", the system automatically turns on. D The warning light does not come on after the ignition key is turned to "ON". D The warning light remains on after the ignition key is turned to "ON". D The warning light comes on while driving. CAUTION Under certain slippery road conditions, full traction of the vehicle and power against 4 wheels (4WD mode) or rear wheels (2WD mode) cannot be maintained, even though the active traction control system is in operation. Do not drive the vehicle under any speed or maneuvering conditions which may cause the vehicle to lose traction control. In situations where the road surface is covered with ice or snow, your vehicle should be fitted with snow tires or tire chains. Always drive at an appropriate and cautious speed for the present road conditions. Leave the system on during the ordinary driving so that it can operate when needed. You may hear a sound in the engine compartment for a few seconds when the engine is started or just after the vehicle begins to move. This means that the active traction control system is in the self − check mode, but does not indicate a malfunction. 154 2003 SEQUOIA from Jan. '03 Prod. (OM34422U)