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 ...

Engine immobilizer system
The vehicle's keys have built-in transponder chips that prevent the engine from starting if the key has not been previously registered in the vehicle's on-board computer. Never leave the keys insid ...

Headlight aim (vehicles with discharge headlights)
Vertical movement adjusting bolts 1. Adjustment bolt A. 2. Adjustment bolt B. Before checking the headlight aim 1. Make sure the vehicle has a full tank of gas and the area around the headlight ...