3309787 - E5020 ENGINE COOLING - Description

Description

The engine radiator and air conditioner condenser cooling system consists of two fans connected in parallel.

These are operated together at two different speeds by the same software.

• the first speed is activated at a first coolant temperature level or at a certain air conditioner coolant pressure.
• The second speed cuts in at a higher temperature or pressure threshold.

The fan is operated via special relays.The fan power supply lines are protected by special maxifuses.Both fuses and relays are housed in a relay carrier control unit located on the left side of the engine bay.