See also:

Safe Driving
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Emissions Testing
Testing of Readiness Codes Your vehicle uses “readiness codes,” as part of its onboard self diagnostic system. Some states refer to these codes during testing to see if your vehicle's emissi ...

Vents, Heating, and A/C
Vents, Heating, and A/C Fan Control Dial Turn this dial to increase or decrease the fan speed and airflow. Temperature Control Dial Turning this dial clockwise increases the temperature of the a ...