Quote:
Originally Posted by David N.
Does anyone know the exact conditions for the engine compartment cooling fan to activate?
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Here is how the engine compartment fan works;
Engine Compartment Purge Fan
To reduce the temperature of the engine compartment, a fan actuated by the DME is installed behind the ventilation grille of the passenger side rear fender vent.
If the fan is active, fresh air is fed into the engine compartment. There is a temperature sensor mounted in the engine compartment to provide temperature input to the DME.
Standard Operation:
1. With engine running or ignition on:
If the engine temperature is higher than 102° C and the engine compartment temperature is higher than 60°C, the engine compartment fan is switched on for 30 seconds by the DME control unit and the engine compartment is thus ventilated.
2. With the engine off and vehicle is stationary:
If the engine compartment temperature is higher than 60° C when the engine is switched off (ignition off) or if the engine stalls (engine speed: 0 rpm), the engine compartment fan is switched on for 20 mins.
Note: If the engine temperature has not dropped below 80.25°C after the engine compartment fan has been running for 25 seconds, a fan fault is registered and the coolant level warning lamp is activated (flashes).
Hybrid Mode
