Service

Technical Information

40/23 ENU

APA2

9

APA2 - Re-Programming or Coding Instrument Cluster (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 in 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 2023

Revision:

Revision

Date

Change

0

04/05/2023

•

First Publication

1

04/06/2026

•

Addition of Scope 4

Model Line:

911 (992)

Country:

Puerto Rico

Concerns:

Instrument cluster control unit

Cause:

Due to a software error in the instrument cluster, the function ‘initial belt warning’ is not displayed in
accordance with local legal requirements on the affected vehicles.
If occupants are not buckled up when the ignition is switched on, the belt warning symbol in the instrument
cluster is displayed permanently and does not flash as required. There is also no acoustic warning.

Action:

Re-code instrument cluster using an updated data record.
Information
Every vehicle is assigned to exactly one campaign scope.
To find out which scope is assigned to the vehicle, see PCSS Vehicle Information.

Integration Test: As the campaign is market-specific, the customer service integration test shows a green result regardless
of implementation. The implementation must be checked using the extended identification in the necessary
control unit.
Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information).

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Required tools
Tools:

•
•

P90999 - PIWIS Tester 4
Battery charger with a current rating of at least 90 A, e.g. battery charger 90 A

Re-coding the instrument cluster
Work Procedure: 1

Re-code instrument cluster control unit.
The basic procedure to be followed for coding the control unit 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 coding during this campaign
Required PIWIS Tester software release:

41.800.010 (or higher)

Type of control unit coding:

Control unit coding using the ‘Automatic coding’
function for the control unit:
‘Instrument cluster’ control unit –
‘Coding/programming’ menu – ‘Automatic coding’
function.

Coding sequence:

Read and follow the information and instructions on
the PIWIS Tester during the guided coding sequence.
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.

Procedure if control unit coding is not
successful:
2

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Repeat control unit coding.

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.

3

Perform a test drive. During the test drive, ensure that the belt warning symbol in the instrument cluster
flashes continuously and that an acoustic warning occurs. If the “initial belt warning” is not emitted as
required, repeat control unit coding.

4

Enter the campaign in the Warranty and Maintenance booklet.

AfterSales

Service

Technical Information

40/23 ENU

APA2

9

Re-programming instrument cluster
Work Procedure: 1

Re-program instrument cluster control unit.
The basic procedure to be followed for coding the control unit is described in the Workshop Manual:
⇒ Workshop Manual 'Basic instructions and procedure for control unit programming using the PIWIS
Tester'

Required PIWIS Tester software release:

41.900.010 (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 releases starts as soon as
programming and coding is complete.

Programming time (approx.):

55 minutes

Software release programmed during this
campaign:

•

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

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.

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.

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2.2
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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 booklet.

Warranty processing
Information
The specified labor time was determined specifically for carrying out this campaign and includes all
necessary preliminary and subsequent rework.
The labor time may differ from the working times published in the Labor Operation List in the PCSS.
Scope 3:

Re-coding the instrument cluster
•

Scope 1 and 2 are not relevant for this vehicle type.
Labor time:
Re-coding instrument cluster control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Þ Damage Code APA2 099 000 1
⇒

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AfterSales

Labor time: 47 TU

Service

Technical Information

40/23 ENU

APA2

9

Warranty processing
Information
The specified labor time was determined specifically for carrying out this campaign and includes all
necessary preliminary and subsequent rework.
The labor time may differ from the working times published in the Labor Operation List in the PCSS.
Scope 4:

Re-programming instrument cluster
•

Scope 1 to 3 are not valid for this vehicle type.
Labor time:
Re-programming instrument cluster control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories

Labor time: 89 TU

Þ Damage Code APA2 099 000 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.

© 2026 Porsche Cars North America, Inc.

AfterSales

Apr 6, 2026
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