Know when to stop.
Know what to check.
Independent guides to help you identify symptoms, make safe initial checks and understand when it’s smarter to stop driving and call a specialist.
When to stop drivingRising temperature, coolant leak, flashing engine light, strong shaking or reduced power — stop driving.
Stop in a safe place as soon as it’s practical. If the engine light flashes, the engine shakes strongly or the car has reduced power, arrange recovery.
Before speaking to a specialist, note when it happens, record warning messages and check the service history.
Find your symptom
Search our diagnostic guides or choose a common issue below.
Search diagnostic guides
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Battery keeps going flat
Repeatedly low or no start, battery drain.Repeatedly low or no start.
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Check engine warning
Engine management light or emissions-related warning.Engine light or emissions warning.
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Rear axle or driveline clunk
Knocking or clunking from the rear or under load.Knocking or clunking from the rear.
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Misfire or rough idle
Uneven running, misfire or poor idle quality.Uneven running or idle quality.
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Engine running hot
High temperature, overheating or coolant loss.High temperature or coolant loss.
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Vibration under braking
Shudder or vibration when braking.Shudder or vibration when braking.
Guidance, not a confirmed diagnosis.