17 00 005 Draining and topping up coolant (N14, N18)

Special tools required:

17 2 052

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

IMPORTANT: Wear protective gloves and safety goggles.

IMPORTANT: For contamination of the cooling system (e.g. by engine oil), the cooling system must be rinsed with water until all contamination is removed!

Necessary preliminary tasks:

Follow notes for CARRYING OUT REPAIR WORK ON THE COOLING SYSTEM . After adding coolant, check cooling system for leak tightness.

Draining coolant:

Unscrew the sealing cap (1) of the coolant expansion tank.

Fig 1: Identifying Sealing Cap On Coolant Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

Release spring strap on lower coolant hose (1) with special tool 17 2 052 .

Detach coolant hose (1). Drain, catch and dispose of coolant.

Fig 2: Releasing Spring Strap On Lower Coolant Hose With Special Tool (17 2 052)

Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant:

Observe FILLING CAPACITY .

Observe appropriate water/antifreeze mixture ratio.

FILL AND BLEED cooling system.

CHECK cooling system for leaks.