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17 00 005 Draining and adding coolant (N55)

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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 .

Observe appropriate water/antifreeze mixture ratio.

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!

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 work: 

Draining coolant: 

Open sealing cap (1) on coolant expansion tank.

Installation note: 

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

Fig 2: Identifying Coolant Expansion Tank Sealing Cap
G06889230Courtesy 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
G06889231Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant: 

Use only recommended COOLANT .

Observe appropriate water/antifreeze mixture ratio.

Observe CAPACITIES .

Fill and vent COOLING SYSTEM .

Observe bleeding instructions without fail. 

Fig 4: Checking Coolant Level
G06889232Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Visual inspection of cooling system for tightness.

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