Immediate steps
- Switch off the air-conditioning and turn the heater to full hot — it pulls heat from the engine.
- Pull over safely and switch the engine off.
- Never open the radiator or coolant cap while hot — boiling coolant can cause serious burns.
- Wait at least 30 minutes before checking levels.
Common causes
- Low coolant or a leaking hose
- Broken radiator fan or fan relay
- Radiator blocked with dust or sand
- Failed water pump or thermostat
- Slipping or broken drive belt
Should you keep driving?
No. Driving with an overheating engine can warp the cylinder head in minutes, turning a cheap fix into a very expensive one. Send us a photo of the temperature gauge and any leaks.