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Home >> BMW >> 2023 >> M3 Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> Transmission >> Transfer Case >> Transfer Case -- Repair M3 (G80) >> 27 10 Transfer Case Assembly, Transfer Case Control Unit >> 27 10 020 Installing the exchange transfer case (M3 Competition M xDrive, M3 CS) >> Installing the exchange transfer case
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Installing the exchange transfer case

Preliminary work 

CAUTION: Materials harmful to health 
Contact with fluids harmful to health! 
  • Note and follow safety instructions on containers
  • Conduct all work in appropriate personal protective equipment only
NOTE: RISK OF DAMAGE 
Damage to the transmission 
Damage to the transmission due to unapproved transmission oil 
  • Use only the approved transmission oil. Please see approved BMW Fluid Capacities tab for the selected vehicle.
  • Check the transmission oil level after completing the repair
NOTE: TECHNICAL INFORMATION 
Replacement transmissions come filled with oil
NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations
NOTE: TECHNICAL INFORMATION 
Vehicle programming/coding must be performed after installation
For ADDITIONAL INFORMATION see: 61 00... Programming/coding control unit(s)

Encode/program control unit(s) 

Precondition 

The control unit was replaced

NOTE: TECHNICAL INFORMATION 
Use the most recent software version to prevent faults during programming/coding
The battery voltage must not fall below 13.0 V during programming
Use only chargers for a low volt-vehicle electrical system that are recommended by BMW
NOTE: TECHNICAL INFORMATION 
No high-voltage switch off is required  in electric vehicles or hybrid vehicles for programming/coding
The high-voltage system will be automatically switched off by the programming system
Exception: 
BMW I01: Note Product and Measures Management Aftersales measure 55176388

Follow-up work