In this guide 7 sections
Understand what is happening first
The fan may run according to temperature, air-conditioning demand and vehicle design, and may continue after shutdown on some models. Continued operation alone does not prove a faulty sensor.
Safety decision before inspection
If operation accompanies a temperature warning or coolant loss, stop safely and address overheating; do not open the hot cap.
Observations that help identify the direction
- Record how long it runs after shutdown, whether the air conditioning was on and whether temperature is normal.
- Mention messages or recent servicing; do not put your hand near the blades even with the engine off.
What should you request from the specialist?
Start with the information that distinguishes the symptom
Request comparison of actual temperature, sensor readings and the fan activation command.
Evidence before component replacement
Check control and power supply when requested and actual operation differ, rather than automatically replacing the sensor.
Avoid this action
Do not remove the fan fuse to silence it or prevent battery discharge and then use the vehicle.
Questions to help you decide
Is operation after shutdown always normal?
Not always. Compare with model instructions; new prolonged operation or battery discharge needs review.
Read the expanded explanation
Prepare the model name, year, engine and transmission type before visiting the workshop. Inspection procedures and specifications vary; do not transfer another vehicle's result to yours.
Sources and scope of this guide
Prepared editorially for 2uto using the following references on 12 September 2026. The observations organise the problem description and do not establish a cause without inspection.
Your vehicle manual takes priority. Dismantling, pressure, electrical and lifting procedures belong with a specialist; examples from a particular manufacturer do not apply universally.