11 53 000 Removing and Installing/Replacing Coolant Thermostat (N55)

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools Required:

WARNING: Risk of Scalding!
Only Perform This Work After Engine Has Cooled Down.
Danger of Injury!
Use Only Special Tool 17 2 050 To Lock and Release Spring Strap.

Recycling

Observe Country-Specific Waste Disposal Regulations.

Catch and Dispose of Drained Coolant In A Suitable Container.

IMPORTANT: Protect Plug Connections Against Coolant and Contamination.
Cover Plug Connections with Suitable Materials.

Necessary Preliminary Tasks:

Drain COOLANT At Coolant Pump.
Remove FAN COWL with Electronic Motor.

Disconnect Plug Connection (1) On Coolant Thermostat.

Fig 1: Identifying Plug Connection

G09875016

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock Retaining Clip (2) In Upward Direction.

Detach Coolant Hose (1) From Coolant Thermostat.

Fig 2: Identifying Retaining Clip and Coolant Hose

G09875017

Courtesy of BMW OF NORTH AMERICA, INC.

Lock Hose Clamp On Coolant Thermostat Outlet with Special Tool 17 2 052 .

Detach Coolant Hose From Thermostat.

Fig 3: Locking Hose Clamp On Coolant Thermostat Outlet Using Special Tool 17 2 052

G09875018

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten Hose Clamp (1) On Thermostat.

Tightening torque:11 53 8AZ .

Fig 4: Identifying Hose Clamp On Thermostat

G09875019

Courtesy of BMW OF NORTH AMERICA, INC.

Release Screw (1) On Holder.

Tightening torque 11 53 2AZ .

Remove Coolant Thermostat.

Fig 5: Identifying Screw On Holder

G09875020

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Danger of Injury! Only Use Special Tool 17 2 050 To Lock and Release Spring Strap.

Use Special Tool 17 2 051 To Release Spring Strap.

Fig 6: Releasing Spring Strap

G09875021

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble Engine.

FILLING AND VENTING COOLING SYSTEM .