No. 171-23

Service
Technical Information
171/23 ENU
APB3
6
APB3 - Re-Coding Airbag Control Unit (Stop Delivery / Recall 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:
As of 2021 up to 2024
Model Line:
911 Carrera (992)
Concerns:
Airbag control unit
Cause:
Due to the current triggering strategy of the side airbag, unnecessary triggering of the side
airbag may occur on the affected vehicles in the event of an accident (for example a frontal
crash).
This can lead to an additional risk of injury in the event of an accident.
Action:
Re-code the airbag control unit with the latest PIWIS Tester software release.
Minimum requirement: Release 42.300.020
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information)
Required tools
Tools:
•
•
P90999 - P90999 - PIWIS Tester 4
Battery charger with a current rating of at least 90 A, e.g., VAS 5908 battery charger 90 A
Re-coding airbag control unit
Information
The procedure described here is based on the PIWIS Tester 4 software release 42.300.020.
The PIWIS Tester instructions take precedence and in the event of a discrepancy, these are the
instructions that must be followed.
Deviations may occur with later software releases, for example.
Work Procedure: 1
Re-code airbag control unit.
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Service
Technical Information
ENU 171/23
APB3
The basic procedure to be followed for coding the control unit is described in the Workshop Manual:
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using
the tester'
Required PIWIS Tester software release:
42.300.020 (or higher)
Type of control unit coding:
Control unit coding using the ‘Campaign’
function in the Additional menu on the PIWIS
Tester by entering a programming code.
Programming code:
M1C5L
Coding sequence:
Read and follow the information and
instructions on the PIWIS Tester during the
guided procedure.
Do not interrupt coding.
When coding is complete, the message “Coding
has been completed successfully” is displayed
and a tick appears in the ‘Status’ box.
2
Coding time (approx.):
6 minutes
Procedure in the event of abnormal termination of control unit coding:
•
•
Disconnect 12-volt battery
Repeat the control unit coding by restarting
the coding.  Workshop Manual '9X00IN
Basic instructions and procedure for control
unit programming using the PIWIS Tester section on “Fault finding”'
Read out and delete all control unit fault memories.
2.1
Press •F7“ in the control unit selection screen (‘Overview’ menu) to call up the Additional
menu.
2.2
Select the function “Read all fault memories and erase if required” and press •F12“ (‘Next’)
to confirm.
Information
If control units are found to have faults that are not caused by control unit coding, these must first be
found and corrected. This work cannot be invoiced under the workshop campaign number.
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Technical Information
171/23 ENU
APB3
6
3
Create Vehicle Analysis Log (VAL) using the PIWIS Tester.
Mark the vehicle analysis log you have created with the attribute “Post-VAL” and after carrying out
the campaign, return it using the PIWIS Tester.
4
End the diagnostic application.
5
Close window and retract rear spoiler.
6
Switch off ignition.
7
Disconnect the Tester from the vehicle.
8
Switch ignition off and then on again. Check that the airbag warning light in the instrument cluster
comes on and then goes off again after a few seconds.
9
Enter campaign in the Warranty and Maintenance logbook.
Warranty processing
Scope 1:
Re-coding airbag control unit
Labor time:
Re-coding airbag control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Creating Vehicle Analysis Logs (VALs) after completing the
campaign
Labor time: 54 TU
 Damage Number APB3 099 000 1
Scope 2:
Re-coding airbag control unit
Labor time:
Re-coding airbag control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Labor time: 70 TU
Creating Vehicle Analysis Logs (VALs) after completing the
campaign
 Damage Number APB3 099 000 1
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Service
APB3
Technical Information
ENU 171/23
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.
Nov 15, 2023
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