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17 00 005 Drain and top up coolant (N63 B40/B44 O 1)

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Special tools required: 

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 and observe mixture ratio. See COOLANT REQUIREMENTS, MIXTURE RATIO, AND WATER QUALITY .

Protective measures/rules of conduct 

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! 
Fig 1: Supporting Coolant Drip Tray Using Special Tool 00 2 030
G09876364Courtesy of BMW OF NORTH AMERICA, INC.

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.

Necessary preliminary tasks: 

Draining coolant 

Loosen the sealing cap at the coolant filler neck.

Installation note: 

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

Fig 2: Closing Sealing Cap
G09876365Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: For purposes of clarity, the fan cowl is shown removed.

Unlock and detach coolant hose (1) from radiator.

Drain, catch and dispose of coolant.

Fig 3: Identifying Coolant Hose At Radiator
G09876366Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant 

Use only recommended coolant and observe mixture ratio. See COOLANT REQUIREMENTS, MIXTURE RATIO, AND WATER QUALITY .

Observe FILLING CAPACITIES .

Fill and vent COOLING SYSTEM .

Observe bleeding instructions without fail. 

Fig 4: Adjusting Coolant Level
G09876367Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Visual inspection of cooling system for tightness.

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