Draining coolant

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Open cap (1) on coolant expansion tank (2).

Installation:

Close cap (1) until the arrow marks line up.

Fig 1: Identifying Coolant Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

If fitted, release drain plug (1) on coolant radiator. On coolant radiators which do not have a drain plug, remove coolant hose.

Drain, catch and dispose of coolant.

Installation:

Replace sealing ring.
Tightening torque 17 11 2AZ, see 17 11 RADIATOR AND MOUNTING PARTS

Fig 2: Identifying Drain Plug

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Adding coolant:

Use only recommended coolant .

Observe mixture ratio .

Observe venting instructions without fail .

Fill and vent cooling system