00 11... Checking/topping up oil level in rear differential

WARNING: This page is about a different car, the 2010 BMW 535i, 2009 BMW 535i, and 2008 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Risk of damage!
To avoid serious damage to the rear differential, it is essential to use only approved gear oils in the differential.

Undo oil filler plug (1).

Check oil level.

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

Fig 1: Identifying Oil Filler Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Oil filler plug with sealing ring:
Replace sealing ring (1).

Tightening torque: 33 11 3AZ .
Oil filler plug with O-ring:
Replace oil filler plug (2).

Tightening torque: 33 11 9AZ .

Fig 2: Identifying Oil Filler Plug And Sealing Ring
Courtesy of BMW OF NORTH AMERICA, INC.