How do you reset manual speedo T Belt light for 2002 3l Diesel Hilux?

To reset the manual speedo T Belt light on a 2002 3L Diesel Hilux, turn the ignition key to the "ON" position without starting the engine. Press and hold the odometer/trip meter button until the T Belt light flashes and then turns off. Release the button, and the light should be reset. Finally, turn off the ignition to complete the process.