Installing wheel electronics

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Insert new square-head bolt (1) in wheel electronics module (2).

Screw single-use valve insert (3) three turns onto square-head bolt (1).

NOTE: Make sure the square bolt head (1) fits exactly in the fixture for the wheel electronics module!

Fig 1: Identifying Wheel Electronics Module, Square-Head Bolt And Valve Insert

Courtesy of BMW OF NORTH AMERICA, INC.

Insert valve insert with wheel electronics into cleaned valve bore.

Both outer feet on the underside of the wheel electronics module must be resting against the rim wall.

Fig 2: Identifying Wheel Electronics Module On Rim Wall

Courtesy of BMW OF NORTH AMERICA, INC.

Screw on union nut (1) by hand as far as it will go.

Tighten union nut until the inner strip-off ring breaks. Breakage is perceptible audibly and tangibly (momentary drop in torque resistance).

Then fully tighten union nut (1).

Tightening torque 36 11 1AZ .

Fig 3: Identifying Union Nut

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Fixing must not under any circumstances be retightened!
The square-head bolt should be located precisely in the wheel electronics module fixture.
After tightening, the wheel electronics module must fit snugly on the wheel rim!