Reading From And Writing To The Rear Convenience System Control Unit

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. 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.

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. [>>] Continue.
Select the vehicle type.
Switch from the vehicle type to the list of control units.
Select Rear with the cursor keys and press the [>>] key.
Select Control unit replacement with the cursor keys and press the [>>] key.
Select Read out values (codings) with the cursor keys and press [>>].
The message Codes successfully read out appears on the screen of the Porsche System Tester. Press [>>].
Switch off ignition and replace control unit→ Removing and installing control unit for rear convenience systems - removing
Switch to the Special functions menu and perform vehicle handover by pressing [F8].
Erase all fault memories in the Special functions menu and press [>>].
Carry out automatic search of control units.
Switch to the Write in data menu and press [>>] to load the data that was read out.
System Tester displays Coding write-in complete [>>].
Change to the Coding menu and compare the coding with the vehicle equipment. Recode if necessary.
Exit the menu, carry out a test drive and read out the fault memory.