27 10 730 Replacing Transfer Box Control Unit (Longitudinal Torque Module) (ATC 45L)

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.

Special tools required:

IMPORTANT: Before and after replacement, execute the "Repair" service function with the BMW diagnosis system.
READ AND COMPLY WITH NOTES ON PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Necessary preliminary tasks:

Disconnect BATTERY EARTH LEAD .
Remove CROSS MEMBER .

Disconnect connector (1).

Release screws (2) and remove transfer box from control unit (longitudinal torque module) (3).

Tightening torque: 27 10 3AZ .

NOTE: Radial shaft seal of actuator shaft must be replaced as well.

Fig 1: Transfer Box From Control Unit (Longitudinal Torque Module), Connector, Screws

G09921697

Courtesy of BMW OF NORTH AMERICA, INC.

Thread special tool 23 0 490 into radial shaft seal (1).

Drive out radial shaft seal (1) with impact weight (2).

Fig 2: Driving Out Radial Shaft Seal With Impact Weight

G08504531

Courtesy of BMW OF NORTH AMERICA, INC.

Push the assembly sleeve 11 1 380 over the actuator shaft.

IMPORTANT: Nonobservance involves a risk of damage to the radial shaft seal.

Fig 3: Pushing Assembly Sleeve 11 1 380 Over Actuator Shaft

G08504532

Courtesy of BMW OF NORTH AMERICA, INC.

Slide the new radial shaft seal (1) over the assembly sleeve (2) onto the actuator shaft.

Fig 4: Sliding Radial Shaft Seal Over Assembly Sleeve Onto Actuator Shaft

G08504533

Courtesy of BMW OF NORTH AMERICA, INC.

Drive radial shaft seal fully home using special tool 11 1 200 and plastic hammer.

Remove the assembly sleeve.

Fig 5: Pulling Radial Shaft Seal Using Special Tool 11 1 200 And Plastic Hammer

G08504534

Courtesy of BMW OF NORTH AMERICA, INC.

After replacement:

CARRY out programming/encoding.