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

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 .