Installing wheel electronics

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. However, it is still accessible from the selected car via links, so may be relevant.

Insert new Torx socket screw (1) in wheel electronics (2) and grip firmly, screw new valve body (3) by hand approx. 3 turns onto screw.

NOTE: Do not tighten screw; wheel electronics and valve body housing must be loosely joined together.

Fig 1: Inserting New Torx Socket Screw In Wheel Electronics

Courtesy of BMW OF NORTH AMERICA, INC.

Insert valve body with wheel electronics into cleaned valve bore.

Here the radial bore for gripping on the circumference of the valve body ball head must point outwards.

Fig 2: Inserting Valve Body With Wheel Electronics Into Cleaned Valve Bore

Courtesy of BMW OF NORTH AMERICA, INC.

Insert the brace supplied with the valve into the valve body bore.

Fit new washer and screw on new union nut by hand as far as it will go.

Tighten union nut, using brace to prevent valve body from twisting.

Tightening torque,

refer to WHEEL AND TIRES - TIGHTENING TORQUES - 540i .

Fig 3: Inserting Brace Supplied With Valve Into Valve Body Bore

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Remove brace, otherwise it may damage the tire.

Press wheel electronics gently into well base and tighten Torx socket screw (1).

Tightening torque,

refer to WHEEL AND TIRES - TIGHTENING TORQUES - 540i .

Fig 4: Pressing Wheel Electronics Gently Into Well Base

Courtesy of BMW OF NORTH AMERICA, INC.