27 10 010 Removing and installing transfer box (ATC 35L)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. 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.

IMPORTANT: After completion of repair work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.
Failure to comply with this requirement will result in serious damage to the transfer box!

Necessary preliminary tasks:

Disconnect NEGATIVE BATTERY CABLE .
REMOVE rear underbody protection.
Remove complete exhaust system . See 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N47 D16/20 K/U/O/T 1) or 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N20, N26) .
Remove FRONT PROPELLER SHAFT .
Remove heat shields.
Partially remove propeller shaft . See 26 11 000 COMPLETELY REMOVING AND INSTALLING PROPELLER SHAFT (INSERTED - REAR FLEXIBLE DISC) (WITHOUT VIBRATION ABSORBER) or 26 11 000 REMOVING AND REFITTING COMPLETE PROPELLER SHAFT (PUSH-FIT - FLEXIBLE JOINT AT REAR) (WITH VIBRATION ABSORBER) .
- Disconnect propeller shaft at transmission.
- Release center mount.
- Tie up propeller shaft to underbody.
  NOTE: Bending the propeller shaft by an excessive angle can cause premature damage to the joint/propeller shaft!
Support gearbox with jack when removing the transfer box.

NOTE: Support transmission with special tools 00 2 030 , 23 4 050 .

Fig 1: Supporting Transmission Using Special Tools (00 2 030 / 23 4 050)

G04745104

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws.

Remove transmission cross member.

Tightening torque 22 32 3AZ .

Tightening torque 22 32 6AZ .

Fig 2: Locating Transmission Cross-Member Screws

G04745107

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect connector (1) from transfer box control unit (linear force module) (2).

Fig 3: Identifying Transfer Box Control Unit Connector (Linear Force Module)

G10103733

Courtesy of BMW OF NORTH AMERICA, INC.

Slightly lower gearbox.

Release screws (1).

Tightening torque 27 10 1AZ .

Take off transfer box (2).

Fig 4: Identifying Transfer Box Screws

G09946815

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Pay attention to dowel pin (1).

Grease dowel pin (1).

Apply a thin coat of grease to gearing.

Grease: WEICON ANTI-SEIZE.

Fig 5: Identifying Dowel Pin

G04745108

Courtesy of BMW OF NORTH AMERICA, INC.