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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. 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 With Sealing Ring And Oil Filler Plug With O-Ring
Courtesy of BMW OF NORTH AMERICA, INC.