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). Refer to 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .
Read and comply with notes on protection against electrostatic damage (ESD protection). Refer to 61 35... NOTES ON ESD PROTECTION (ELECTRO STATIC DISCHARGE) .
Necessary preliminary work
- Disconnect NEGATIVE BATTERY LEAD
- Remove cross member . See 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.