No. 74-23-2

Service
Technical Information
74/23
ENU
WPG3
9
WPG3 - Re-Programming Instrument Cluster (Workshop Campaign)
Introduction
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 13.5V and 14.5V
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:
As of 2020 up to 2021
Model Line:
911 (992)
Concerns:
Instrument cluster control unit
Cause:
The following complaints may occur on the affected vehicles due to a fault in the software of
the instrument cluster control unit:
•
•
•
•
Intermittent failure of the display
Intermittent failure of the tachometer
Service interval cannot be coded
The language selection “French” is not available in the Canadian market
Action:
Re-program the instrument cluster control unit with the latest PIWIS Tester software version.
Minimum requirement: Version 41.900.030
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information)
Required tools
Tool:
•
•
9900 - PIWIS Tester 4
Battery charger with a current rating of at least 90 A, e.g. battery charger 90 A
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Jul 18, 2023
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9
Service
WPG3
ENU
Technical Information
74/23
Re-programming instrument cluster
Work
Procedure:
Information
Before starting programming, you must pay particular attention to the following:
•
Set the charging voltage between 13.5V and 14.5V.
•
Carry out programming in charging mode.
•
The PIWIS Tester must not be charged using the cigarette lighter!
1
The basic control unit programming procedure is described in the Workshop Manual  Workshop
Manual '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:
41.900.030 (or higher)
Type of control unit programming:
Control unit programming using the ‘Campaign’
function in the additional menu on the PIWIS
Tester by entering a programming code.
Programming code:
Z7B9G
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 once the
programming and coding is complete.
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Programming time (approx.):
55 minutes
Software version programmed during this
campaign:
•
Instrument cluster control unit: 0237
Following control unit programming, the software
release can be read out from the relevant control
unit in the “Incremented identifications” menu using
the PIWIS Tester.
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Service
Technical Information
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Procedure in the event of error messages
appearing during the programming sequence:
 Workshop Manual 'Basic instructions and
Procedure in the event of a termination in the
control unit programming:
Repeat control unit programming by restarting
programming.
2
3
9
procedure for control unit programming using the
PIWIS Tester'
Read out and delete all control unit error memories.
2.1
In the control unit selection (“Overview” menu) press •F7“ to call up the Additional menu.
2.2
Select the function “Read all error memories and delete if necessary” and press •F12“
(‘Next’) to confirm.
Enter the campaign in the Warranty and Maintenance logbook.
Warranty processing
Scope 1:
Labor time:
Re-programming instrument cluster
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Labor time: 73 TU
 Damage number WPG3 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.
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