11 53 000 Removing and Installing/Replacing Coolant Thermostat (N54)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW 335xi, 2010 BMW 335i, 2009 BMW 335xi, 2009 BMW 335i, and 2008 BMW 335xi. However, it is still accessible from the selected car via links, so may be relevant.

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.

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 ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

Remove coolant thermostat (7).

NOTE: Illustration shows coolant thermostat removed.

Fig 1: Identifying Hose Clamp, Coolant Hose & Coolant Thermostat

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.