See also:

Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system. If the malfunction indic ...

Indicators and warning lights
The indicator and warning lights on the instrument cluster and center panel inform the driver of the status of the vehicle’s various systems. Instrument cluster The units used on the speedometer ...

Tires
Replace or rotate tires in accordance with maintenance schedules and treadwear. Checking tires 1. New tread. 2. Treadwear indicator. 3. Worn tread. The location of treadwear indicators is sho ...