2004 Toyota Tundra Owners Manual - Page 182

'04 TUNDRA_U (L/O 0309) If the vehicle is going to skid during driving, the slip indicator light blinks and an alarm sounds intermittently. Special care should be taken while driving. The slip indicator light comes on for a few seconds when the ignition key is turned to "ON". If the indicator light does not come on when the ignition is turned on, contact your Toyota dealer. Type A Lever type Type B 182 2004 TUNDRA from Sep. '03 Prod. (OM34426U)