BMW 7 Series: Draining And Adding Coolant (N63)

Notes

WARNING: Risk of scalding!

The 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.

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.

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. 4: Lifting Of Drip Tray Using Special Tool (00 2 030)

Necessary preliminary work

• Remove front UNDERBODY PROTECTION.

Draining coolant

Open sealing cap (1) on coolant expansion tank.

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

Fig. 5: Identifying Coolant Sealing Cap

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. 6: Identifying Coolant Hose

Adding coolant

Use only recommended coolant and observe mixture ratio.

Observe FILLING CAPACITIES.

Fill and vent COOLING SYSTEM.

Observe bleeding instructions without fail

Fig. 7: Identifying Coolant Level

Assemble engine.

CHECK COOLING SYSTEM FOR LEAKS.

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