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Home >> BMW >> 2015 >> 335i xDrive Automatic Trans >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer Case - Repair - F30 >> Transfer Case, General >> 27 00... Topping up transfer box oil (ATC 35L)

27 00... Topping up transfer box oil (ATC 35L)

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!

Necessary preliminary tasks: 

Check/adjust transfer box oil level: 

Undo oil filler plug (1).

Check transfer case oil level.

Transmission oil must flow/drip gently out of the oil filler opening.

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

Installation note: 

Replace oil filler plug (1).

Tightening torque 27 10 2AZ .

Fig 1: Identifying Oil Filler Plug
G06854446Courtesy of BMW OF NORTH AMERICA, INC.