At what temperature does the Mondeo's electric fan turn on?

[DelJudah]

Mondeo's electric fan turns on at around 97 degrees Celsius. Here are the reasons why the electric fan may not turn on: 1. Poor motor lubrication - If the motor isn't properly lubricated, it will have difficulty driving the fan blades after installation; 2. Motor overheating - Excessive motor heat can reduce its load-bearing capacity and effective power output, making it unable to drive the load; 3. Prolonged motor usage - Long-term use can cause motor wear. After the motor's shaft sleeve wears out, it can easily burn out. Extended use also increases the motor's internal resistance and reduces its load-bearing capacity, preventing it from driving the fan blades.

[McGiselle]

I've been driving my Mondeo for almost three years now, and I've really paid attention to the electric fan kicking in. When stuck in stop-and-go traffic, the fan starts whirring as soon as the temperature gauge needle just passes the middle grid. I remember once specifically checking with an OBD scanner - the fan activates around 97°C, controlled by that temperature sensor on the radiator. On highways, I rarely hear it running since the ram air provides good cooling. With AC cooling turned on, the fan intervenes earlier at just over 90°C, as the compressor adds load to the cooling system.

[VanAdriana]

After studying the Mondeo's cooling system parameters, the electric fan engagement temperature range of 94-102°C is normal. This design ensures the thermostat fully opens to allow coolant circulation while preventing engine overheating. A little-known fact: the activation temperature fluctuates with different cooling system pressures - the radiator cap's standard value is 1.1 bar. If the temperature gauge reaches the red zone without fan response, it's likely either a burnt relay in the cooling module or an issue with the series-parallel switching in dual-fan versions.

[DiJustin]

I've repaired too many Mondeo's fan failures. Whether the electric fan rotates or not mainly depends on the temperature signal received by the ECU. The new Mondeo starts low-speed rotation at 96℃±3℃, and runs at full speed above 105℃. Common misjudgments include faulty coolant temperature sensors causing false triggers, or worn fan carbon brushes resulting in delayed startup. Cars with modified headlights need special attention, as improper wiring may cause the fan to run continuously.