17 00 005 Draining And Adding Coolant (N73)

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WARNING: Danger of scalding! Only carry out work on the cooling system after the engine has cooled down!

Recycling:

Catch and dispose of drained coolant.

Observe country-specific waste-disposal regulations.

Necessary Preliminary Tasks:

Use only recommended coolant.
Remove reinforcement plate.
Remove engine splash guard.

Open cap (1) on coolant expansion tank.

Fig 1: View Of Coolant Expansion Tank Cap

Courtesy of BMW OF NORTH AMERICA, INC.

Open screw (1).

Drain, catch and dispose of coolant.

Recycling:

Observe waste-disposal regulations.

Fig 2: Identifying Coolant Expansion Tank Draining Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Open drain plug (1) on engine block.

Drain, catch and dispose of coolant.

Installation:

Replace sealing ring.

Tightening torque, refer to 11 11 5AZ in ENGINE - TIGHTENING TORQUES .

Recycling:

Observe waste-disposal regulations.

Fig 3: Locating Drain Plug Of Engine Block

Courtesy of BMW OF NORTH AMERICA, INC.

Adding Coolant:

Vent cooling system and check for leaks. Refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N73) .