Reading And Writing Values
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Voltage drop
- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming
→ Prior to disconnecting the control unit, switch off ignition and remove ignition key.
→ Ensure that the power supply is not interrupted during programming.
→ Connect a battery charger with a current rating of at least → Nominal value: 40 A to the vehicle battery.
Information
The PIWIS Tester II 9818 instructions take precedence since the description may be different with later Tester releases.
The procedure described here has been structured in general terms; different text or additions may appear in PIWIS Tester II 9818 .
- Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
- Select the vehicle type and start the diagnostic application.
- Select the required control unit, e.g. Amplifier in the overview .
- Programming must now be selected.
- Automatic programming must now be selected. Then press [F12] to continue.
- The System Tester displays the message Coding has been completed successfully . Press [F12] to continue.
- Read out the fault memory and erase it if necessary.
- Carry out a function check on the loudspeaker amplifier.