11 53 000 Removing And Installing/Replacing Coolant Thermostat (N12)

WARNING: This page is about a different car, the 2008 MINI Cooper and 2007 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

17 2 050

WARNING: Danger of scalding!
Only perform these tasks on an engine that has cooled down.

Recycling:

Catch and dispose of drained coolant.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:

Drain coolant from radiator.

Release lock (1) on coolant pipe in direction of arrow.

Fig 1: Identifying Lock On Coolant Pipe

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1) on coolant thermostat.

Fig 2: Identifying Plug Connection On Coolant Thermostat

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Detach all coolant hoses from thermostat.

NOTE:

Release metal hose clamps with special tool 17 2 050 .

Disconnect plug connection (1) on coolant temperature sensor.

Slacken nut (2).

Release screws (3).

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Fig 3: Identifying Plug Connection On Coolant Temperature Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace seal (1).

Fig 4: Identifying Seal Area

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Assemble engine.

Vent cooling system and check for leaks.