11 53 000 Removing And Installing/Replacing Coolant Thermostat (N51)

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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:

Remove front splash guard.
Drain coolant from radiator. See 17 11 000 REMOVING AND INSTALLING RADIATOR (N51, S65) .

Release hose clamp (1) and detach coolant hose.

Release hose clamp (2) and detach coolant hose.

Unlock and detach coolant hose (3).

Unlock and detach coolant hose (4).

Disconnect plug connection (5).

Release screws (6).

Tightening torque. See 11 53 1AZ in THERMOSTAT AND CONNECTIONS .

Remove coolant thermostat (7).

Fig 1: Identifying Plug Connection And Coolant Hose

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Illustration shows coolant thermostat removed.

Assemble engine.

Venting instructions must be observed without fail.