11 53 000 Removing and installing/replacing coolant thermostat (N63)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

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

Recycling:

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Drain COOLANT .
Remove FAN COWL with electric fan.
Remove charge air cooler EXPANSION TANK .
Remove COOLANT PUMP .

Unlock plug connection (1) and pull off.

Unlock and detach coolant hose (2).

Unfasten nut.

Release screws.

Tightening torque: 11 53 1AZ .

Remove coolant thermostat (3).

Fig 1: Locating Coolant Thermostat Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The coolant thermostat is integrated into the housing cover and can only be replaced as a complete unit.

Clean sealing surfaces.

Installation note:

Replace sealing ring (1).

Fig 2: Locating Coolant Thermostat Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Top up COOLANT .

Vent COOLING SYSTEM and check for water leaks.