Remove low-temperature coolant expansion tank

WARNING: This page is about a different car, the 2022 BMW X7, 2021 BMW X7, 2020 BMW X7, and 2019 BMW X7. However, it is still accessible from the selected car via links, so may be relevant.

Preliminary work

Refer to REMOVING THE FRONT UNDERBODY PROTECTION .

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
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Use commercially available disconnection tools to disconnect the coolant line.

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Use commercially available syringe (1) or a suitable tool to empty the coolant expansion tank.

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Loosen sealing cap (1).
Suction out coolant with a standard pump and dispose of it.

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Unlock and disconnect the coolant line (1).
Unlock lock (2).
Release the low-temperature coolant expansion tank (3) from the holder.

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NOTE: TECHNICAL INFORMATION
Only flexible hose pipes may be disconnected.
Pinch off the coolant line (1) with a standard disconnection tool.
Unlock and disconnect the coolant line (1).
Catch and dispose of leakage coolant.
Guide out low-temperature coolant expansion tank (2) and remove.

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