See also:

Uniform Tire Quality Grading (UTQG)
For details, refer to “Uniform tire quality grading standards”. ...

Fuel
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Compass calibration
1. If a “C” is displayed in the compass window, the compass needs to be calibrated. 2. Drive the vehicle in a circle at 5 mph (8 km/h) or less until the display reads a direction. 3. You can also ...