Tire Pressure Module: Service and Repair
WM 443419 Removing and installing control unit for Tyre Pressure Monitoring (TPM)
Tools
Preliminary work
Preliminary work for tyre pressure monitoring system (RDK) control module
-> 703019 Removing and installing luggage-compartment cover - section on "removing" 70301900 Removing and installing front luggage compartment cover
Removing control unit for Tyre Pressure Monitoring (TPM)
Removing tyre pressure monitoring system (RDK) control module
WARNING
Risk of damage to electronic control modules.
- If care is not taken, electrical and electronic components may be destroyed.
-> Before removing the control module, switch off the ignition and remove the ignition key.
The control module is located beside the brake booster in the luggage compartment.
1. Unscrew fastening nuts -1-.
Unscrew fastening nut -1-, loosen fastening nut -2-, release plug -3- and remove it.
2. Loosen fastening nut -2- and remove the control module.
3. Release the electrical plug -A- and fold up lock.
4. Remove control module.
Installing control unit for Tyre Pressure Monitoring (TPM)
Information
Before installing the control unit for Tyre Pressure Monitoring (TPM), visually check the control unit and plug connection with regard to the following points:
- Damage to the housing.
- Damage to the contacts on the control unit.
- Damage to the connector and contacts on the vehicle wire harness.
- Dirty contacts.
If the control unit is damaged, replace it.
If the wire harness, connector or contacts are damaged, repair them in accordance with the relevant safety instructions using the Repair kit for Cayenne wire harnesses NR.155-2.
If the contacts are dirty, clean them.
1. Plug in electric connector on the control unit and lock connector -B-.
Plugging in and locking connector
2. Position control unit and secure with both fastening nuts.
Positioning and securing control unit
Subsequent work
Rework on tyre pressure monitoring system (RDK) control module
-> 703019 Removing and installing luggage compartment cover - section on "installing" 70301900 Removing and installing front luggage compartment cover
Programming control unit for Tyre Pressure Monitoring (TPM)
Control units - reading and writing replacement values
Information
Follow the instructions on the Tester.
Later versions of the software may display slightly different text or require a slightly different procedure. The instructions you receive from the tester itself take precedence over this description.
If the control module for the tyre pressure monitoring system is replaced, it must be programmed using the PIWIS Tester 9718. This will ensure that the control module is taught for the relevant vehicle, country version and equipment.
WARNING
Sudden voltage interruption of the power supply to the control module.
- Destruction of the control module.
-> During programming, it is essential to guarantee the power supply for the Porsche System tester. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.
-> Prior to disconnecting the control module, switch off the ignition and remove the ignition key.
1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition. Press >> to continue.
2. Select the vehicle type.
3. Switch from the vehicle type to the list of control units.
4. Select RDK with the cursor keys and press the >> key.
5. Select Control unit replacement with the cursor keys and press the >> key.
6. Select Read out values (codings) with the cursor keys and press >>.
7. The message Codes successfully read out appears on the screen of the Porsche System Tester. Press >>.
8. Switch off ignition and replace control unit. -> 443419 Removing and installing control unit for the tyre pressure monitoring system - section on "Removing"
9. Switch to the Special functions menu and perform the vehicle handover using the F8 key.
10. In the Special functions menu, erase All fault memories by pressing >>.
11. Carry out automatic search of control units.
12. In the menu Write in data >> , the data read-out is installed.
13. System Tester displays Coding write-in complete >>.
14. Quit menu, carry out a test drive, and read out fault memory.