2003 Toyota Tundra Owners Manual - Page 110
2003 Toyota Tundra Manual
Page 110 highlights
'03 TUNDRA_U (L/O 0208) CHECKING SERVICE REMINDER INDICATORS (except the low fuel level warning light and low windshield washer fluid level warning light) 1. Apply the parking brake. 2. Open one of the doors. The open door warning light should come on. 3. Close the door. The open door warning light should go off. 4. Turn the ignition key to "ACC". The SRS warning light should come on. It goes off after about 6 seconds. 5. Turn the ignition key to "ON", but do not start the engine. All the service reminder indicators except the open door warning light and SRS warning light should come on. The "ABS" warning light goes off after a few seconds. If any service reminder indicator or warning buzzer does not function as described above, have it checked by your Toyota dealer as soon as possible. 110 2003 MY TUNDRA (OM34419U)