Remove the coolant expansion tank for the low-temperature coolant circuit

Preliminary work

Refer to REMOVING THE WHEEL .
Refer to REMOVING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER .

WARNING: Hot surfaces.
Risk of burning!

Perform all work only on components that have cooled down.

CAUTION: Materials harmful to health.
Contact with fluids harmful to health!

Note and follow safety instructions on containers.
Conduct all work in appropriate personal protective equipment only.

NOTE: TECHNICAL INFORMATION
Use commercially available pinch-off tools to pinch off the coolant hoses.

NOTE: TECHNICAL INFORMATION
Immobilization period-long fill of coolant!
Do not 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 emptied and refilled.
In the case of other removal work involving the draining of part quantities of coolant, the coolant level must be topped up with new coolant.

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Use commercially available disconnection tools to pinch off the coolant lines.

Courtesy of BMW OF NORTH AMERICA, INC.
Use commercially available syringe (1) or a suitable tool to empty the coolant expansion tank.

Courtesy of BMW OF NORTH AMERICA, INC.
Open the lid (1) on the coolant expansion tank.
Suction the coolant with a standard pump from the coolant expansion tank for the low-temperature coolant circuit and dispose of it.

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
Only flexible hose pipes may be disconnected.
Pinch off the coolant line (2) with a standard pinch-off tool (1).
Unlock and disconnect the coolant line (2).

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
Only flexible hose pipes may be disconnected.
Pinch off the coolant line (2) with a standard pinch-off tool (1).
Unlock and disconnect the coolant line (2).
Unlock the coolant expansion tank (3) for the low-temperature coolant circuit in the marked area (4).

Courtesy of BMW OF NORTH AMERICA, INC.
Pull the coolant expansion tank (1) for the low-temperature coolant circuit upwards out of the holders and position.

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock and disconnect the coolant line (2) with a standard screw driver (1).

Courtesy of BMW OF NORTH AMERICA, INC.
Feed out and remove the coolant expansion tank (1) for the low-temperature coolant circuit upwards.

Courtesy of BMW OF NORTH AMERICA, INC.