BMW 7 Series: Removing And Installing RDC (Tyre Pressure Control) Control Unit

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD protection).

Necessary preliminary tasks

• Remove right LUGGAGE COMPARTMENT WHEEL ARCH PANEL.

Disconnect plug connection (1).

Pull out RDC control unit (2) upwards in direction of arrow.

Fig. 35: Pulling Out RDC Control Unit

Replacement

• Carry out programming/encoding

REMOVING AND INSTALLING RDC (TYRE PRESSURE CONTROL) CONTROL UNIT (LOW COST)

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD protection).

Disconnect plug connection (1).

Press retaining tabs (2) apart as indicated by arrow.

Pull out TPC control unit.

Fig. 36: Press Tpc Control Unit Retaining Tabs

Replacement

• Carry out programming/encoding

REMOVING AND INSTALLING/RENEWING TIRE PRESSURE CONTROL WHEEL ELECTRONICS (2ND GENERATION/3RD GENERATION)

IMPORTANT: Before removing and installing, check which generation of RDC wheel electronics module is installed! (see BMW Spare Parts Catalogue).

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

NOTE: There are two different wheel electronics. The SP303 wheel electronics module must be used with RDC-01 and RDC-02 from model year 03/06.

The Gen3 wheel electronics must be used with the RDC-LC from model year 09/2010 (all F0x/F1x vehicles).

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 dirty, wipe with a clean cloth only.

Do not clean wheel electronics with compressed air.

Necessary preliminary tasks:

• REMOVE TIRE

Labelling of generation 2.3 wheel electronics

1. Transmission frequency of electronic wheel module
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

Fig. 37: Identifying Labels On Gen2.3 Wheel Electronics

NOTE: The following illustrations only show removal and refitting of the 3rd generation wheel module. The instructions also apply without alteration to the wheel module SP303.

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

Fig. 38: Identifying Labels On Gen2.4 And Gen3.3 Wheel Electronics

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

Fig. 39: Identifying Labels On Gen3.4/3.41 Wheel Electronics

Removing electronic wheel module

NOTE: The following illustrations only show removal and refitting of the 3rd generation wheel electronics module. The instructions also apply without alteration to the 2nd generation wheel electronics.

Release union nut (1).

Fig. 40: Identifying Union Nut

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

Fig. 41: Identifying Wheel Module Valve

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

Remove square head screw from holder for electronic wheel module.

Installation note: Replace valve.

Fig. 42: Unscrewing Valve From Thread Of Square-Head Bolt Using Plier

IMPORTANT: 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 is free of burrs

Installing electronic wheel module

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

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

NOTE: Make sure the square head screw (1) fits exactly in the holder for the electronic wheel module!

Fig. 43: Identifying Wheel Module With Square Head Bolt And Valve Insert

Insert valve insert with wheel electronics into cleaned valve bore.

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

Fig. 44: Identifying Wheel Module

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

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

Then fully tighten sleeve nut (1).

Tightening torque 36 11 1AZ.

Fig. 45: Identifying Sleeve Nut

IMPORTANT: Fixing must not under any circumstances be retightened! The square-head bolt should be located precisely in the wheel module holder.

After tightening, the electronic wheel module must fit snugly on the rim!

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