17 00 005 Draining and topping up coolant: M62

Unfasten cap on expansion tank.

Release vent screw.

Fig 1: Releasing Vent Screw

If necessary, remove front underbody protection from units.

Unscrew drain plug at bottom of radiator.

If necessary, remove front underbody protection from units, Cars with automatic transmissions:

Turn hose plug (1) to left and detach towards bottom.

Fig 1: Identifying Hose Plug

Cars with manual transmission:

Remove drain plug at bottom of radiator.

Drain, catch and dispose of coolant.

Unfasten drain plug(s) on engine block.

Remove drain plugs on left and right of engine block.

NOTE: Turn on ignition. Set heater control to maximum temperature. Set blower to low level. This opens the heating valves and sets the auxiliary water pump in operation.

Perform filling operation slowly.

Fill up expansion tank fully and wait until bubble-free coolant emerges from vent plug. Tighten down vent plug.

NOTE: Vent cooling system and check for leaks, refer to 17 00 039 BLEEDING COOLING SYSTEM AND CHECKING FOR WATER LEAKS

Fig 1: Filling Up Expansion Tank (1 Of 2)

Fig 2: Filling Up Expansion Tank (2 Of 2)