Removing and installing/replacing RDC wheel electronics (2nd generation/3rd generation)

Attention! 

Before removing and refitting, check which generation of wheel electronics is fitted! (See BMW applicable BMW parts catalogue)

If the wheel electronics have been removed, the complete valve must be replaced.

If a tire sealant has been used, replace the wheel electronics.

When a tire has been removed, do not clean the rim with installed wheel electronics with high-pressure cleaning equipment.

Before the installation of new wheel electronics with valve, thoroughly clean the valve bore of the wheel rim.

Do not treat wheel electronics with solvents, cleaning agents etc. If dirt contamination, wipe with a clean cloth only.

Do not clean wheel electronics with compressed air.

When tire sealant is used, the installed wheel electronics must necessarily be replaced.

Necessary preliminary tasks: 

• REMOVE TIRE .

Labelling of generation 2.3 wheel electronics 

1. Transmission frequency of wheel electronics
2. Large Torx socket screw
3. BMW part number
4. Tightening torque of Torx screw and union nut
5. Width across flats of union nut
6. Serial number of wheel electronics
7. Production date of wheel electronics

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Labelling of generation 2.4 and 3.3 wheel electronics 

1. Data Matrixcode
2. BMW part number
3. FCC ID = radio authorization
4. Wheel electronics ID
5. Transmission frequency
6. Pressure sensor
7. Production date of wheel electronics
8. Tightening torque
9. Width across flats of union nut

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Labelling of generation 3.4/3.41 wheel electronics 

1. FCC ID = radio authorization
2. Tightening torque
3. Pressure sensor
4. Data Matrixcode
5. Production date of wheel electronics
6. Transmission frequency
7. Wheel electronics ID
8. Width across flats of union nut
9. BMW part number

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Removing wheel electronics 

Release union nut (1).

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Remove wheel electronics and valve (1) from valve hole.

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Using suitable pliers (2), unscrew valve (1) from the thread of the square-head bolt (3), while holding the wheel electronics module (4) firm. Completely unscrew valve (1).

Remove square head screw from fixture for wheel electronics module.

Installation note: 

The valve must be replaced! 

Failure to replace the part leads to leaks! 

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Attention! 

Before the installation of new wheel electronics with valve, thoroughly clean the valve bore of the wheel rim!

Also make sure that the valve bore has been deburred.

Installing wheel electronics 

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

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

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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.

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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 .

Attention! 

Fixing must not under any circumstances be retightened!

The square-head bolt should be located precisely in the wheel electronics mounting.

The wheel electronics should still be resting evenly against the wheel rim after tightening.

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