Engine Fan Noise
Your vehicle has a clutched engine cooling fan.
When the clutch is engaged, the fan spins faster to provide more air to cool the engine. In most everyday driving conditions the clutch is not engaged. This improves fuel economy and reduces fan noise. Under heavy vehicle loading, trailer towing, and/or high outside temperatures, the fan speed increases when the clutch engages so you may hear an increase in fan noise. This is normal and should not be mistaken as the transmission slipping or making extra shifts. It is merely the cooling system functioning properly.
The fan will slow down when additional cooling is not required and the clutch disengages.
You may also hear this fan noise when you start the engine. It will go away as the fan clutch disengages.
See also:
Climate Controls
The heating, cooling, and ventilation for the vehicle can be controlled with these systems.
A. Air Conditioning
B. Driver and Passenger
Temperature Controls
C. Heated Seats
D. Air Deliv ...
Temperature – A, B, C
The temperature grades are A
(the highest), B, and C,
representing the tire's resistance
to the generation of heat and its
ability to dissipate heat when
tested under controlled
conditions ...
Lamp Messages
AFL (Adaptive Forward
Lighting) LAMPS NEED
SERVICE
This message displays when the
Adaptive Forward Lighting (AFL)
system is disabled and needs
service. See your dealer. See
Adaptive Forwa ...