BMW X3 Service & Repair Manual: Replenishing/changing transfer box oil (atc 450)

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:

• Remove TRANSMISSION CROSS MEMBER .

Check transfer case oil level, correct:

Undo oil filler plug (1).

Check transfer box oil level.

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

Installation note: Replace oil filler plug (1).

Changing transfer case oil:

Place oil collecting apparatus underneath.

Remove oil drain plug (1).

Drain and dispose of transmission oil.

NOTE: Observe country-specific waste disposal regulations

Installation note: Replace oil drain plug (1).

Undo oil filler plug (1).

Pour in transmission oil up to lower edge of opening for oil filler plug (1).

Installation note: Replace oil filler plug (1).