11 53 000 Removing and installing/replacing coolant thermostat (N12)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

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

Recycling:

Catch and dispose of drained coolant. See DRAINING AND ADDING 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 Coolant Thermostat Plug Connection

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Detach all coolant hoses from thermostat.

NOTE:

Disconnect plug connection (1) on coolant temperature sensor.

Slacken nut (2).

Release screws (3).

Tightening torque 11 53 1AZ

Fig 3: Identifying Coolant Temperature Sensor Plug Connection, Nut And Screws

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Installation:

Replace seal (1).

Fig 4: Identifying Seal

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Assemble engine.