No. 33-23

Service
Technical Information
33/23
ENU
WPC3
6
WPC3 - Re-Programming Rear Spoiler Control Unit (Workshop Campaign)
Important:
CRITICAL WARNING -This campaign includes steps where control unit(s) in the vehicle will be
programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5
volts during this programming. Failure to maintain this voltage could result in damaged control unit(s).
Damage caused by inadequate voltage during programming is not a warrantable defect. The technician
must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document
the actual voltage on the repair order.
Model Year:
2023
Vehicle Type:
911 GT3 RS (992)
Concerns:
Control unit for rear spoiler
Cause:
Due to a software error in the rear spoiler control unit on affected vehicles, the erroneous
warning message “Aerodynamics disrupted” is displayed intermittently in the instrument
cluster when the engine is started.
In this case, the warning message will disappear automatically after a short time and a fault memory
entry will be written. “Active aerodynamics” is always available in all driving modes despite the warning
message.
Action:
Re-program the rear spoiler control unit using the most current PIWIS Tester software version.
Minimum requirement: Version 41.800.022
Integration
Test:
Due to the customer service integration test, the control units must always be programmed automatically
using the relevant control unit as of model year 22 (N).
The procedure is described in the table for carrying out the “Type of control unit programming”
procedure.
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
Required tools
Tool:
•
•
9900 - PIWIS Tester 3/4
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 90 A battery charger
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May 10, 2023
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Service
WPC3
ENU
Technical Information
33/23
Re-programming rear spoiler control unit
Information
Please note that, for some affected vehicles, the target software 0080 has already been
programmed and the integration test displays green. In this case, the rear spoiler control unit will
only need to be re-coded via Automatic coding.
1
The basic procedure for control unit programming is described in the Workshop Manual 
Workshop Manual '9X00IN Basic Instructions and Procedure for Control Unit Programming Using the
PIWIS Tester'.
For specific information on control unit programming during this campaign, see the table
below:
Required PIWIS Tester software version:
41.800.022 (or higher)
Type of control unit programming / coding:
Control unit programming using ‘Automatic
programming’ in the rear spoiler control unit.
Programming sequence:
Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
Do not interrupt programming and coding.
A backup documentation process for the
re-programmed software versions starts as soon
as programming and coding is complete.
May 10, 2023
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Programming time (approx.):
3 minutes
Software version programmed during this
campaign:
•
Procedure in the event of error messages
appearing during the programming sequence:
 Workshop Manual '9X00IN Basic instructions
Rear spoiler control unit: 0080
Following control unit programming, the software
version can be read out from the relevant control
unit in the  “Incremented identifications” menu
using the PIWIS Tester.
and procedure for control unit programming using
the PIWIS Tester'.
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Service
Technical Information
33/23
ENU
WPC3
Procedure in the event of an interruption in the
control unit programming:
Repeat control unit programming by restarting
programming.
Integration test procedure:
•
•
6
Rear spoiler control unit integration
testdisplays green -> Perform automatic
rear spoiler control unit coding
Rear spoiler control unit integration
testdisplays red -> Perform automatic
rear spoiler control unit programming
2
Read out all fault memories; process and delete existing faults if necessary.
3
Exit the diagnostic application. Switch off the ignition. Disconnect the Tester from the vehicle.
4
Enter campaign in the Warranty and Maintenance booklet.
Warranty processing
Scope 1:
Re-programming rear spoiler control unit
Labor time:
Re-programming rear spoiler control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Labor time: 31 TU
 Damage code WPC3 066 000 1
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2023 Porsche Cars North America, Inc.
AfterSales
May 10, 2023
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