17 00 005 Draining and adding coolant (N12)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

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

IMPORTANT: Wear protective gloves and goggles.

Necessary preliminary tasks:

After adding coolant, check cooling system for LEAKS .

Draining coolant:

Unscrew cap (1) on coolant expansion tank.

Fig 1: Coolant Expansion Tank Cap

Courtesy of BMW OF NORTH AMERICA, INC.

Release spring strap on lower coolant hose (1) with special tool 17 2 051 .

Detach coolant hose (1). Drain, catch and dispose of coolant.

Fig 2: Locating Coolant Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Adding coolant:

NOTE: Before filling, turn on ignition and set heating control to maximum temperature.
Set fan to sow setting.
Pour in coolant slowly.

Observe mixture ratio.

The cooling system is vented during filling.

NOTE:

Installation location of vent screw: thermostat housing.
For purposes of clarity, illustration shows and text refers to released cable duct (1).

Release vent screw.

Pour in special coolant through expansion tank filler neck until bubble-free coolant emerges at vent screw.

Close vent screw.

Tightening torque 17 00 1AZ .

Fig 3: Locating Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Continue topping up coolant in expansion tank to max. level (1).

Start engine and run at idle speed.

If the level drops, top up coolant until the level no longer drops.

Switch off engine and if necessary top up coolant to max. level.

Close expansion tank.

Fig 4: Coolant Max. Level In Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check cooling system for LEAKS .