17 12 020 Removing and installing or replacing auxiliary water pump (S63 B44 T 0)

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2018 BMW M6, 2018 BMW 650i xDrive, 2018 BMW 650i, 2018 BMW 640i xDrive, and 2018 BMW 640i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Check stored fault message.
Switch off ignition.
Follow INSTRUCTIONS for repair work on the cooling system.
Remove FAN COWL .
Drain COOLANT .

Release screw (1).

Release auxiliary water pump (2) together with bracket in upward direction from holder.

Fig 1: Identifying Auxiliary Water Pump And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Ensure that no coolant enter into the plug connection of the auxiliary coolant pump.
Check plug connection for coolant residues. If necessary, blow clean plug connection with compressed air.

Unlock connector (1) and remove.

Release clamps (2) and detach coolant hoses.

Lift out auxiliary water pump (3) together with holder.

Fig 2: Identifying Auxiliary Water Pump, Connector And Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Add COOLANT after completing repair work.

Check cooling system for tightness.

Assemble engine.

Read out the fault memory of the DME control unit.

Delete fault memory.