Based on the information and instructions stored in the computer program, commands are then sent to three primary systems:
- Ignition System
- Fuel System
- Emission Control System
Failure in these systems can ultimately illuminate a “check engine” light. About 85% of vehicles on the road have either a check engine light on or some other safety issue such as a broken license-plate light, loose gas cap, a worn spark plug, poor emissions, low transmission fluid or cracked hoses and belts, according to the Car Care Council, a nonprofit consumer-education organization.
The first step to determine the problem behind an engine light is hooking up a scan tool or code reader to an On-Board Diagnostics connector that usually sticks out from under the driver's side of the dashboard.
Kwik Kar recommends a full service oil and lube every 3,000 miles or 3 months.