Service

Technical Information

135/22 ENU

WNJ8

9

WNJ8 - Update to Software Network VR19.0.1 (Workshop Campaign)

Revision:

This bulletin replaces bulletin Group 9 135/22 WNJ8, dated January 20, 2023.

Model Year:

As of 2020 up to 2022

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 Series:

Taycan (Y1A/Y1B/Y1C)

Concerns:

Software update (software version VR19.0.1)

Information
WNJ8 must not be carried out without AMB5/WMH0/WND4/WNF5!
Information:

Software optimizations are available for various control units for the Taycan.
An overview of the new features that will be implemented with the software update can be found in the
enclosure under  Technical Information 'Overview of the new features of the software update'
Campaign Exception for Punch Time Requirements: ANA6, WNJ8, and WNK1
PCNA will make an exception to warranty policy regarding the necessary time keeping procedures when
performing the following campaigns: ANA6, WNJ8, and WNK1.
Though warranty policy guidelines state that no technician may be punched on more than one R.O. at
the same time, an exception will be made for the ANA6/WNJ8/WNK1 campaigns. Due to the extensive
programming time necessary a technician may perform multiple ANA6, WNJ8, and WNK1 campaigns
at one time, as long as there is a separate identifiable punch for each on the respective repair
order and the total number of campaigns being performed at one time does not exceed 3. The
exception will be made so that full "active participation time" does not need to be documented for these 3
campaigns only.

Measures:

•
•
•

Reprogram the instrument cluster with the latest PIWIS Tester software version.
Minimum requirement: Version 41.900.020
Replace Owner's Manual in the on-board folder in the vehicle with an updated version.

AfterSales

May 10, 2023
Page 1 of 27

9

Service

Technical Information

ENU 135/22

WNJ8

Checklist:

Due to the high number of incorrect programming steps carried out as part of the last software update
(VR12.1.1), a checklist was created to improve the overview of the work to be carried out. The checklist
must be completed and signed and attached to the PQIS quality line in the PCSS.
For checklist, see  Technical Information 'Checklist'

Affected
Vehicles:

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

Required tools
Tools:

•
•
•
•

9900 - PIWIS Tester 3
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90A
USB storage medium Type A+C 32 GB (for PCM update), Part No. V04014999WW000
USB storage medium, type C (for onboard Owner's Manual update), e.g. Part No.
V04014999WW000

Software update (software version VR19.0.1)
Work
Procedure:

May 10, 2023
Page 2 of 27

Information
Before starting programming, the battery charger must always be:
•

Switched off and back on. Switch it off, allow time for the charger display to go blank, then switch
it back on. This is to reset a timer internal to the battery charger itself. There is a default setting in
the charger which can cause it to automatically switch from the current Mode to Trickle Charging.
Switching it off and on again ensures the charger does not automatically fall back to trickle charging
mid-programming.

•

Set charge voltage to 14.8 volts.

•

In Supply Mode.

•

The vehicle must be on a level surface.

•

Air suspension must be at Normal level.

•

Switching off air conditioning system.

•

Place original remote control in emergency start tray (note the position and orientation of the key
remote).

•

Activate Private Mode in the PCM

1

The basic procedure for control unit programming is described in the Workshop Manual 
Workshop Manual 'Basic Instructions and Procedure for Control Unit Programming Using the PIWIS
Tester'.

AfterSales

Service

Technical Information

135/22 ENU

WNJ8

9

Information
An active Internet connection with the PIWIS Tester must be ensured.
It is necessary to enroll the technician using the PIWIS Tester.
Vehicles with a PVTS contract must be activated for Service mode to prevent unwanted theft
detection during the campaign..
The PIWIS Tester must not be charged using the cigarette lighter!
2

After the backup documentation process, the integration test is started automatically. The result
must first be ignored.

3

Create Vehicle Analysis Log (VAL) using the PIWIS Tester. Mark the vehicle analysis log you have just
created with the attribute "Pre-VAL" and after carrying out the campaign, return it using the PIWIS
Tester.

4

Update various control units to software version VR19.0.1 (Sequence 1).
For specific information on control unit programming during this campaign, see table
below.

Required PIWIS Tester software version:

41.900.020 (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:

J1K1T

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.

Programming time (up to):

•
•
•

AfterSales

MY 2020-2021 / 250 minutes
MY 2022 / 120 minutes
The first interaction by the technician is
required after about 30 minutes. The rest of
the programming sequence runs through to
the end without any necessary interaction.

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Technical Information

ENU 135/22

WNJ8

See  Technical Information 'Overview of
control units, VR19.0.1'

Control units programmed in this campaign:

•

Procedure in the event of error messages
appearing during the programming sequence:

 Workshop Manual '9X00IN Basic instructions

Procedure in the event of a termination in the
control unit programming:

Continue the campaign sequence to the end,
then carry out the integration test again when
the test is complete and start programming
from the integration test.

and procedure for control unit programming using
the PIWIS Tester - section on “Troubleshooting"'.

Additional instructions for aborted programming

 Technical Information '9X00IN Additional
instructions if programming is aborted'
5

When programming is complete, backup documentation including the integration test is done again.
The result must first be ignored because this sometimes displays control units that are displayed as
faulty despite programming.
To check this, the integration test must be started again on the start page by pressing the•F3“
button. This process must be repeated up to three times.
If this results in a discrepancy here, the relevant control unit must be re-programmed. The central
computer (PCM) control unit must not be programmed initially because this is programmed in
sequence 2.
Sequence 2 must not be started until all control units are programmed correctly in the integration
test (exception: central computer (PCM).

6

The battery charger must be switched off and on completely once before Sequence 2 due to the
automatic switchover (trickle charging).

7

Select Guest account from the central display (PCM) and activate Privacy mode (available in some
countries).
Information
If Privacy mode is not active, programming may be aborted, resulting in a fault in the central
computer (PCM). Central computers that are replaced as part of the workshop campaign are
checked by Porsche AG; if private mode was not set in the central computer before starting
programming, the costs will be re-debited.

May 10, 2023
Page 4 of 27

AfterSales

Service

Technical Information

135/22 ENU

WNJ8

9

Information
Please inform the customer that all mobile phones must be re-paired following the
campaign. Existing/paired mobile phones will appear in the Devices list, but must be
deleted & re-paired to be functional.
Please inform the customer that Media --> Favorites have moved. Favorites are now accessed
similar to all media sources. Therefore, it may be recommended to re-order the media sources to
provide easy access to stored Favorites.
8
Re-program the central computer (PCM) (Sequence 2).
Sequence 2 may only be performed if Sequence 1 was performed.
For specific information on control unit programming during this campaign, see table
below.
Preparing USB stick with the required software (depending on country version)
Overview of the software to be used for the central computer (PCM): See  Technical Information
'9X00IN Overview of PCM update'
Required PIWIS Tester software version:

41.900.020 (or higher)

Type of control unit programming:

Select the PCM central computer control unit
in the control unit selection screen (‘Overview’
menu) and select the ‘Maintenance/repairs’
menu.
Select the ‘Install software update’ function and
press •F12“ (‘Next’) to perform the software
update.

Programming code:

J1K2T

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.

Programming time (up to):

25 minutes

AfterSales

May 10, 2023
Page 5 of 27

9

Service

Technical Information

ENU 135/22

WNJ8

See  Technical Information '9X00IN
Overview of control units, VR19.0.1'

Control unit programmed in this campaign:

•

Procedure in the event of error messages
appearing during the programming sequence:

 Workshop Manual '9X00IN Basic instructions

Procedure in the event of a termination in the
control unit programming:

Repeat control unit programming by restarting
programming.

and procedure for control unit programming using
the PIWIS Tester - section on “Troubleshooting"'.

Additional instructions for aborted programming

 Technical Information '9X00IN Additional
instructions if programming is aborted'
9

Remove USB stick.

10 Start rework for various control units (Sequence 3).
Sequence 3 may only be performed if sequences 1 and 2 have been performed.
Important Information!
The teaching process for component protection during the execution of Sequence 3 is
different between model years!

May 10, 2023
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Model year

Control unit required for execution

2020-2021

Assistance systems (zFAS)

2022

Rear-end electronics (BCM2)

Required PIWIS Tester software version:

41.900.020 (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:

J1K3T

AfterSales

Service

Technical Information

135/22 ENU

Programming sequence:
The instructions for selecting the
required control unit for teaching
component protection must always be
observed!

WNJ8

9

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.

Programming time (up to):

approx. 25 minutes

Control units programmed in this campaign:

•

Procedure in the event of error messages
appearing during the programming sequence:

 Workshop Manual '9X00IN Basic instructions

Procedure in the event of a termination in the
control unit programming:

Repeat control unit programming by restarting
programming.

See  Technical Information '9X00IN
Overview of control units, VR19.0.1'

and procedure for control unit programming
using the PIWIS Tester - section on “Troubleshooting"'.

Additional instructions for aborted programming

 Technical Information '9X00IN Additional
instructions if programming is aborted'

Information
Important Information!
•

Resetting the charging profiles is only necessary if a high-voltage charger (OBC 22kW) is
installed in the vehicle.

•

As soon as the control unit is selected, the left side of the PIWIS Tester shows whether the
charger is 11 kW or 22 kW.

•

If the charging profiles are not reset, there is a possibility that the Plug and Charge function will
not be available.

11
Reset charging profiles for high-voltage charger (OBC 22kW).
11.1

Select high-voltage charger (OBC 22 kW) control unit.

11.2

Select Drive links/checks.

11.3

Select Load profile, factory setting.

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Service
WNJ8

Technical Information

ENU 135/22

11.4

Start the routine with •F8“.

12 Perform direct rework in the vehicle.
12.1