Cooling System

ENGINE COOLING SYSTEM







The cooling system concepts introduced in the 1999 Model year including the automatic transmission heat exchanger and the the water cooled alternator have been retained for the X5.

The component locations have however been changed:
- Thermostat for heat exchanger mounted directly on radiator
- Transmission heat exchanger - right side of radiator.

IHKA (A/C) SYSTEM AUXILIARY PUMP







The auxiliary water pump for the IHKA is mounted on the left side of the radiator The function of the pump remains the same as follows:
- provide adequate coolant flow for IHKA operation
- provide coolant circulation for the REST function Of IHKA.