27 10 730 Replacing Transfer Box Control Unit (Longitudinal Torque Module) (ATC 35L)
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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 DAMAGE (ESD PROTECTION) .
READ AND COMPLY WITH NOTES ON PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .
Necessary preliminary work:
- Disconnect NEGATIVE BATTERY LEAD .
- Remove cross member . See 22 32 050 REPLACING CROSS-MEMBER FOR TRANSMISSION MOUNTING (N57) AWD , 22 32 050 REPLACING THE CROSS MEMBER FOR THE TRANSMISSION MOUNTING (N20, N55, N47) ALL-WHEEL DRIVE VEHICLE or 22 32 050 REPLACING CROSS-MEMBER FOR TRANSMISSION MOUNTING (N63) AWD .
Disconnect connector (1).
Release screws (3) and remove transfer box control unit (longitudinal torque module) (2).
Tightening torque: 27 10 3AZ .
Installation note:
Replace O-ring.
NOTE:
Radial shaft seal of actuator shaft must be replaced as well.
Thread special tool 23 0 490 into radial shaft seal (1).
Drive out radial shaft seal (1) with impact weight (2).
Push the assembly sleeve 11 1 380 over the actuator shaft.
IMPORTANT:
Nonobservance involves a risk of damage to the radial shaft seal.
Slide the new radial shaft seal (1) over the assembly sleeve 11 1 380 onto actuator shaft.
Drive radial shaft seal fully home using special tool 11 1 200 and plastic hammer.
Remove the assembly sleeve.
After replacement:
CARRY out programming/coding.