17 00 005 Draining and adding coolant (N54, N55)

Special tools required:

00 2 030

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

IMPORTANT: Lifetime coolant filling:
Never reuse used coolant!
When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be drained and refilled.
In the case of other removal work involving the draining of part quantities of coolant, replace these quantities which have been drained with new coolant.

Installation note:

Use only recommended coolant. See RADIATOR -- OPERATING FLUIDS .

Observe mixture ratio. See RADIATOR -- OPERATING FLUIDS .

Protective measures/rules of conduct:

Wear safety goggles
Wear protective gloves
Observe national/country-specific regulations

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

IMPORTANT: Risk of skidding due to coolant on the floor.
Danger of injury!

Catch and dispose of drained coolant in drip tray (1) and if necessary special tool 00 2 030 (universal hydraulic lifting equipment).

Recycling:

Observe country-specific waste disposal regulations.

Fig 1: Supporting Coolant Drip Tray Using Special Tool (00 2 030)

Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary work:

Follow notes for CARRYING OUT REPAIR WORK ON THE COOLING SYSTEM .
Remove UNDERBODY PROTECTION
Remove intake port. See REMOVING INTAKE PORT (N55) .

Unclip Bowden cable for engine compartment lid operation from transverse reinforcement (1).

Detach A/C line from bracket.

Release screws on left and right sides.

Tightening torque: 51 71 4AZ .

Remove transverse reinforcement (1).

Fig 2: Locating Screws Of A/C Line From Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

Draining coolant:

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

Installation note:

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

Fig 3: Identifying Sealing Cap And Coolant Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten and detach coolant hose (1) from thermostat housing.

Drain, catch and dispose of coolant.

Fig 4: Identifying Coolant Hose

Courtesy of BMW OF NORTH AMERICA, INC.

With supplementary radiator:

Open coupling on coolant hose below charge air cooler.

Drain, catch and dispose of coolant.

Fig 5: Identifying Coupling On Coolant Hose

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Adding coolant:
Use only recommended coolant. See RADIATOR -- OPERATING FLUIDS .
Observe mixture ratio. See RADIATOR -- OPERATING FLUIDS .
Observe capacities . See 1700 COOLANT, COOLING SYSTEM TEST, N63 or 1700 COOLANT, COOLING SYSTEM TEST, N55 .
Observe bleeding instructions without fail.
FILL AND BLEED COOLING SYSTEM .
Visual inspection of cooling system for tightness.