11 53 090 Removing and installing/replacing auxiliary coolant pump (B48, B46)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2019 MINI Cooper, 2018 MINI Cooper, 2017 MINI Cooper, 2016 MINI Cooper, and 2015 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work:

Drain COOLANT .

Removal:

Release screw (1).

Pull the auxiliary coolant pump (2) slightly forwards.

Fig 1: Auxiliary Coolant Pump And Screw

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Unlock and disconnect the connector (1) of the auxiliary coolant pump.

Fig 2: Auxiliary Coolant Pump Connector

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Unlock coolant hose (1) and pull off of auxiliary coolant pump.

Fig 3: Coolant Hose Of Auxiliary Coolant Pump

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Unlock coolant hose (1) and pull off of auxiliary coolant pump (2).

Remove auxiliary coolant pump (2).

Fig 4: Auxiliary Coolant Pump And Coolant Hose

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Installation:

Install auxiliary coolant pump (1).

Connect coolant hose (2) to auxiliary coolant pump (1).

NOTE: The coolant hose (2) must engage audibly.

Fig 5: Auxiliary Coolant Pump And Coolant Hose

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Connect coolant hose (1) to auxiliary coolant pump.

NOTE: The coolant hose (1) must audibly engage.

Fig 6: Coolant Hose Of Auxiliary Coolant Pump

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Connect the connector (1).

Fig 7: Auxiliary Coolant Pump Connector

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Fasten auxiliary coolant pump with screw (1).

Tightening torque 11 51 4AZ .

Fig 8: Auxiliary Coolant Pump And Screw

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Required follow-up work:

Top up COOLANT .
Check cooling system for tightness.