How do you reset compass on Lexus IS350?

To reset the compass on a Lexus IS350, first ensure the vehicle is in a level position. Then, turn the ignition to the "ON" position without starting the engine. Press and hold the "CAL" button on the compass display until the "CAL" indicator appears, then release the button. Drive the vehicle in a circle at about 5 mph until the calibration is complete, at which point the compass will be reset.