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27 00... Topping Up Transfer Box Oil (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.
IMPORTANT: Use only the approved transmission oil in the transfer box .
Failure to comply with this requirement will result in serious damage to the transfer box!
NOTE: Only change oil when transfer box is at normal operating temperature.

Necessary preliminary tasks: 

Check transfer box oil level, correct: 

Undo oil filler plug (1).

Check transfer case oil level.

If necessary pour in transmission oil up to the lower edge of the oil filler plug opening (1).

Installation note: 

Replace oil filler plug (1).

Tightening torque: 27 10 2AZ .

Fig 1: Oil Filler Plug
G09958608Courtesy of BMW OF NORTH AMERICA, INC.