Engine Cooling - Overview (G1772508): Overview

WARNING: This page is about a different car, the 2017 Jaguar XJ, 2016 Jaguar XJ, 2015 Jaguar XJ, 2014 Jaguar XJ, and 2013 Jaguar XJ. However, it is still accessible from the selected car via links, so may be relevant.

The engine cooling system maintains the engine within an optimum temperature range under changing ambient and engine operating conditions. The system is a pressurized expansion tank system with continuous bleeds to separate air from the coolant and prevent the formation of air locks. The engine cooling system also provides:

Heating for:
- The passenger compartment.
  Refer to: Heating and Ventilation - DESCRIPTION AND OPERATION .
- The throttle body.
Cooling for:
- The engine oil cooler.
  Refer to: ENGINE OIL COOLER (Description and Operation).
- The ATF (Automatic Transmission Fluid) cooler.
  Refer to: Transmission Cooling - DESCRIPTION AND OPERATION .

The primary components of the engine cooling system are the:

Coolant pump.
Electric thermostat.
Radiator.
Electric cooling fan.
Coolant expansion tank.
Engine oil cooler.
Outlet tube and heater manifold.
Connecting hoses and pipes.
An auxiliary radiator is installed on vehicles in hot climate markets, to increase the engine cooling capacity.

In cold climate markets, an optional block heater is available as a dealer fit accessory. The block heater is located in the cylinder block and is connected to a power supply via an external plug.