A mechanical symptom can have several causes and is not always fixable at the roadside. Explain what happened before the vehicle stopped and give the exact warning messages. The professional will assess whether an on-site check is possible; workshop diagnosis may require recovery.
Information to prepare
- Record the warning light or displayed message.
- Describe noise, power loss or a high temperature reading.
- Report visible leaks without going underneath the car.
- Say whether the engine is off and the vehicle can roll.
What to watch for
Never open the coolant cap while the engine is hot. Avoid restarting to “test” the vehicle after a serious warning.