Vehicle Troubleshooting

Troubleshooting is the process of narrowing down causes instead of guessing and replacing parts.

Start with evidence

Check dashboard warnings, battery voltage, fluid levels, recent changes and fault codes. A code indicates the system that detected a problem; it does not always identify the failed component.

Protect the vehicle

Stop driving if there is overheating, loss of oil pressure, a brake warning, severe vibration, smoke, fuel smell or an unsafe steering response. Arrange recovery rather than turning a small fault into major damage.