NHTSA ID Number: 10252441
Manufacturer Communication Number: No. 236-22
TSB/Document Date: 2024-04-02
Summary
Technical information for WNT1 - reprogramming connect unit and central computer
Service
Technical Information
236/22 ENU WNT1
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.
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)
Part No.
Designation
– Region
Vehicle allocation
9Y2909000M
USB storage medium for PCM
update
– North America
– Mexico
I-No. ER3 / ER4+KD0
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Mar 6, 2024
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9
Service
WNT1
Technical Information
ENU 236/22
Panamera (971), 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
WKD97101B2122
Owner's Manual
- English US
WKD97101B3122
Owner's Manual
- French (Canada)
Ordering via
Polaris
(PPL)
Onboard Owner's
Manual
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.
Mar 6, 2024
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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
AfterSales
Mar 6, 2024
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Service
WNT1
Technical Information
ENU 236/22
Central computer (PCM)
Programming of the central
computer (PCM) aborts when
Fault 33 is detected
•
•
•
Central computer (PCM)
During the tester procedure,
a message appears reporting
that the software is already
up-to-date
•
•
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
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
•
Mar 6, 2024
Page 10 of 12
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)
AfterSales
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?
AfterSales
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Service
WNT1
Technical Information
ENU 236/22
12. Owner's Manual replaced?
13. Campaign entered in the Warranty and Maintenance booklet?
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.
© 2024 Porsche Cars North America, Inc.
Mar 6, 2024
Page 12 of 12
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TSB/Document ID: No. 236-22
Replacement Service Bulletin Number:
MFR Communication Date: 2024-03-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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