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17 00 008 Draining and topping up coolant (N57)

Special tools required: 

WARNING: Risk of scalding!
This repair work on the cooling system should only be carried out on an engine that 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.
IMPORTANT: 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 .

Observe appropriate water/antifreeze mixture ratio.

Protective measures: 

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: Identifying Drip Tray And Special Tool (00 2 030)
G05476170Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks: 

Draining coolant: 

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

Installation note: 

Close the sealing cap (1) until the arrows line up.

Fig 2: Aligning Coolant Expansion Tank Sealing Cap Arrows
G04794040Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and detach coolant hose (1) from radiator.

Drain, catch and dispose of coolant.

Fig 3: Identifying Coolant Hose
G11104621Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant: 

Use only recommended COOLANT .

Observe appropriate water/antifreeze mixture ratio.

Observe CAPACITIES .

Observe bleeding instructions without fail. 

FILL AND BLEED COOLING SYSTEM .

Visual inspection of cooling system for tightness.

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