11 53 000 Removing and installing or replacing coolant thermostat (N18)

Special tools required:

WARNING: Risk 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:

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

Fig 1: Releasing Lock On Coolant Pipe

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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:

Unfasten screws (2 and 3).

Tightening torque: 11 53 1AZ .

NOTE: Illustrations show N12.

Fig 3: Identifying Coolant Hoses Nut And Screws

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Installation note:

Replace gasket (1).

Fig 4: Identifying Gasket

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Assemble engine.

Vent COOLING SYSTEM and check for leaks.