9

* The cost of one Owner's Manual will be covered for each vehicle. For warranty invoicing, enter the
Part No. WNT10000001 with the designation “Owner's Manual” as accessories costing $ 0.01.
** If you incur shipping costs when ordering the Owner's Manual, please invoice these costs under the Part
No. WNT10000002, with the designation “Shipping costs” as an additional part. Maximum cost $ 5.25.
Please document a copy of the invoice for this in the warranty claim.
Þ Damage code WNT1 066 000 1
⇒

Overview of PCM update
Information
The central computer (PCM) software update is performed using a SD storage card. The software version
that is specific to each region must be downloaded using the software tool PiUS (Porsche integrated Update
Service) and must be installed on a blank SD storage card.
Pay particular attention to the following:
•

For this PCM software update, a USB storage medium must be used.

•

To use the software tool, one blank or re-writable USB storage medium is required for each individual
software.

•

The software available in PiUS must only be used in accordance with the instructions provided in a
Technical Information published for this purpose.

The software listed here may only be used for the measure described here. Damage to the central computer
cannot be ruled out if the software is used on other vehicles.
You will find further information on installation and use for the PiUS software tool in the PPN portal under
*PiUS (Porsche integrated Update Service) goes live*.
Overview:

911 (992), Panamera (971)
Part No.

Designation
– Region

Vehicle allocation

9Y2909000AF

USB storage medium for PCM
update
– North America
– Mexico

I-No. ER3 / ER4+KD0

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Technical Information

ENU 236/22

Cayenne (9YA, 9YB)
Part No.

Designation
– Region

Vehicle allocation

9Y2909000R

USB storage medium for PCM
update
– North America
– Mexico

I-No. ER3 / ER4+KD0

Overview of Order Numbers for Owner's Manual
Information
From now on, only use the Owner's Manuals with the order number WKD 971 01 y xx 22 for the vehicles
assigned to the campaign. These reflect the technical status of the vehicles following the software update.
The order numbers for the various language versions of the updated Owner's Manual are provided in the
following table. You can order the Owner's Manual in the quantity you need using the standard ordering
process.

Information
A blank or re-writable USB storage medium is additionally required for installation of the onboard Owner's
Manual.
Parts Info:

Order No.

Designation
- Language

Ordering via
Polaris (PPL)

Onboard Owner's
Manual

WKD97101B2122

Owner's Manual
- English US

■

■

WKD97101B3122

Owner's Manual
- French (Canada)

■

■

Additional instructions if programming is aborted
Information
If individual programming steps or reworking could not be carried out correctly, see Workshop Manual for the
basic procedure for control unit programming using the PIWIS Tester ⇒ Workshop Manual '9X00IN Basic
instructions and procedure for control unit programming using the PIWIS Tester - section on “Fault finding”'
In the event of a fault, logging must always be created during programming using •Ctrl“ and •L“ using the
PIWIS Tester.

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Service

Technical Information
Notes:

236/22 ENU WNT1

Control unit:

Situation:

Action required:

Cancelling individual control
units:

One or more control units cannot
be programmed or can no longer
be accessed

•

•

•
•
Error message DoIP switchover:

There is no DoIP switchover

•
•
•
•
•
•

9

Check on whether the
control unit can be accessed
using the PIWIS Tester or if
bus idle does not have to be
carried out
Control unit still not
accessible –> Remove fuse
for control unit –> Ignition on
–> Ignition off –> Re-insert
fuse
Control unit still not
accessible –> Disconnect
battery overnight
Check whether the control
unit is accessible
Switch off VCI and try again
(do not operate VCI via WiFi)
Use a different VCI
Use another PIWIS Tester
Check PINs on OBD socket
Check fuses of the OBD
socket
Check Ethernet lines
between OBD socket
and gateway (resistance
measurement)

Central computer (PCM)

The central computer freezes
while loading

•
•

Start programming again
Perform PCM factory reset
using the guided PIWIS
Tester procedure

Central computer (PCM)

The central computer control
unit cannot be accessed

•

Pulling out fuse for central
computer control unit –>
Ignition on –> Ignition off –>
Re-insert fuse

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Technical Information

ENU 236/22

Central computer (PCM)

Programming of the central
computer (PCM) aborts when
Fault 33 is detected

•
•

•

Central computer (PCM)

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Fault 33 is displayed in the
central computer display
during programming
Start the update in the
Developer menu on the
central computer (PCM). The
update may only be started
from the Developer menu in
this case because the PCM
is already in the Developer
menu
If the update still cannot be
performed –> replace central
computer (PCM)

During the tester procedure,
a message appears reporting
that the software is already
up-to-date

•

Central computer (PCM)

No start of programming

•

Programming is started via
the additional menu and
not in the central computer
(PCM) control unit under
Maintenance / repairs as
described in the TI

Central computer (PCM)

Programming is not started or
programming is interrupted

•

For other topics that are not
listed in the TI, a PRMS ticket
must be created before
replacing the PCM system

Log in to PPN

Electronic Owner's Manual
cannot be installed due to an
faulty Internet connection

•

Always proceed as described
in the work procedure!
After the PCM update,
the diagnostics must be
completely closed before the
electronic Owner's Manual
can be installed using the
PIWIS Tester

AfterSales

•

•

In the Tester, 2020 is
displayed as the vehicle type
in the top line next to model
year
Re-write vehicle order using
PIWIS Online

Service

Technical Information
Connect

236/22 ENU WNT1
Active fault B200000 (020018)
in Connect control unit after
carrying out the campaign

•

•

Connect

Programming will be aborted on
the VTS alarm

•

9

Perform “Deactivate flight
mode” procedure in the
Connect control unit twice
in quick succession(There
must be no pause between
them)
Follow the Tester
instructions; sufficient
reception is required for
deactivating
If programming of the
Connect control unit is
aborted with the feedback
“Active VTS Alarm”, a PRMS
ticket must be sent to TCC
Connect Support.

Checklist
Checklist:

Work step:
The checklist is an aid for carrying out the campaign and does not replace the TI information.

Completed:

1. Owner's Manual available? The campaign must not be carried out without the Owner's
Manual.
2. Charger set to 14.6V and charging mode?
3. Internet connection for PIWIS Tester active?
4. Vehicle Analysis Log (VAL) created?
5. Connect control unit programmed? (depending on the scope)
6. Select Guest account from the central display (PCM) and activate Privacy mode?
7. Central computer control unit programmed?
Read the warnings displayed on the Tester.
8. Electronic Owner's Manual installed?
9. Fault memory deleted?
10. Vehicle Analysis Log (VAL) created?
11. Is the battery charger set to a charge voltage of 14.4 V?
12. Owner's Manual replaced?
13. Campaign entered in the Warranty and Maintenance booklet?

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Technical Information

ENU 236/22

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.

© 2025 Porsche Cars North America, Inc.

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