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 Coolant Expansion Tank Sealing Cap

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: Removing Lower Coolant Hose Spring Strap Using Special Tool (17 2 052)

Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant:

Observe filling capacity. See COOLANT, COOLING SYSTEM TEST (N16) or COOLANT, COOLING SYSTEM TEST (N14, N18) .

Observe proper coolant mixture ratio.

FILL AND BLEED COOLING SYSTEM .

CHECK COOLING SYSTEM FOR LEAKS .