Section 4 (Engine & Automatic Transmission Cooling System): Engine: Fan-Radiator: Operation: Notes
WARNING: This page is about a different car, the 2006 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The hydraulic radiator cooling fan used on the 5.7L and 3.0L Diesel engines replaces both the electric fan and the engine driven mechanical fan. This provides 5.7L and 3.0L Diesel equipped vehicles with heavy trailer towing capability while at the same time reducing unnecessary power drain on both the engine and the vehicles electrical system.