11 53 000 Removing and Installing/Replacing Coolant Thermostat (N63)

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 .

IMPORTANT: Risk of Damage!
Coolant Emerges When The Coolant Hoses Are Detached From The Coolant Thermostat.
Cover Surrounding Components and Plug Connections with Suitable Apparatus

NOTE: for Purposes of Clarity, The Graphic Shows The Auxiliary Water Pump Removed.

Disconnect Plug Connection (3).

Installation Note:

Plug Connection (3) Must Snap Audibly Into Place!

Unlock Snap Fastener On Coolant Hose (2).

Detach Coolant Hose (2) and Lay To One Side.

NOTE: One of The Screws Is Not Shown and Is Located At The Rear Under The Coolant Thermostat (1).

Release Screws (4).

Tightening torque 11 53 1AZ .

Lift Out Coolant Thermostat (1).

NOTE: The Coolant Thermostat Is Integrated In The Housing Cap. It Can Only Be Replaced As A Complete Unit!

Clean Sealing Surface.

Fig 1: Identifying Coolant Thermostat, Coolant Hose and Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Installation Note:

Replace Sealing Ring (1).

Fig 2: Identifying Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble Engine.

Top Up COOLANT .

BLEEDING INSTRUCTIONS Must Be Observed Without Fail.