17 11 040 Removing and installing/replacing thermostat on gearbox oil cooler (N55)

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IMPORTANT: Risk of scalding!
Only perform this repair work after engine has cooled down.

Recycling

Catch and dispose of drained coolant in a suitable collecting vessel.

Observe country-specific waste disposal regulations.

Necessary preliminary work:

Drain COOLANT .
Remove rear CHARGE-AIR DUCT .

NOTE: For purposes of clarity, the intake plenum is shown removed.

Release and disconnect coolant hoses (1).

Unscrew nuts (2).

Tightening torque 17 10 6AZ .

Remove thermostat (3).

Installation note:

Clean contact surfaces.

Fig 1: Identifying Coolant Hoses, Nuts And Thermostat
Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.