NHTSA ID Number: 11032437
Manufacturer Communication Number: No. WSJ0
TSB/Document Date: 2026-05-07
Summary
Technical information for WSJ0 – Update to Software Network VR28.13
through Apple CarPlay and Android Auto. Improved contacts
synchronization between vehicle and mobile device
Reliable availability of the central display: Improved system
robustness ensures that the touch function of the central display
is available without interruption after starting the vehicle
•
•
•
•
My Porsche
app
•
•
Driver assistance systems
•
•
•
•
New function for opening and locking the charge port door
directly from the app
Improvement of data transmission for a more accurate display of
the remaining range in the My Porsche app
Numerous stability, robustness and comfort improvements.
Increased system stability to avoid unintended white and
yellow warning messages, e.g. for fatigue warning, “Assistance
systems not available” warning message, “Clean sensor” warning
message
Optimization of traffic sign recognition
Expansion of the Porsche voice assistant to include Google
Search for more convenient and quicker information retrieval
while driving
Adjustment of the wheel tilt function in the intelligent
ParkAssist: The “wheel tilt” special function was removed to
ensure consistent and reliable system behavior regardless of the
gradient of the respective parking space. The digital Owner's
Manual has been adapted accordingly
AfterSales
Apr 30, 2026
Page 13 of 23
9
Service
WSJ0
ENU
Technical Information
2025
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•
Reduced warning and information messages: Adjustments
reduce unnecessary or intermittent messages so that relevant
warning and information messages can be perceived more
clearly
More stable behavior of ParkAssist: System improvements
ensure a more reliable function of the ParkAssist
Navigation system
•
Improved 5G connectivity
Comfort systems
•
•
•
Optimization of vehicle key recognition
Improved ParkAssist stability
Improved smartphone charging: The wireless charging function
supports smartphones – even with a protective case – more
reliable and reduces charging interruptions
Adjustments to the tailgate function: Ensures uniform opening
and locking of the rear lid
Harmonized side window control: More reliable and consistent
behavior of the automatic side window functions in everyday
driving, including the prevention of unintentional window
movements
•
•
Air-conditioning system
•
Optimization of the dehumidification function to more effectively
prevent misted windows
High-voltage system
•
Numerous stability and robustness improvements
Acoustics and indications
•
Optimization of the calculation logic for dynamic service
intervals
High-voltage system
•
Numerous stability and robustness improvements
Back to introduction ⇒ Technical Information '9X10IN Introduction ' ⇒ Technical Information '9X10IN Introduction'
Additional information on control unit programming and coding
Information
If individual programming or rework procedures could not be carried out correctly, please refer to the
Workshop Manual for the basic procedure for control unit programming with the PIWIS tester. ⇒ Technical
Information '9X10IN Basic information and procedure for control unit programming with the PIWIS tester.
Information':
In the event of a fault, always create a log with the PIWIS tester during programming with •P2“.
Apr 30, 2026
Page 14 of 23
AfterSales
Service
Technical Information
Work
Procedure:
2025
ENU
WSJ0
9
General:
Fault indication
Cause
Source of
fault
Remedial action
After the first update
cycle, one or more
control units with
coding are required
or programming is
required
The affected control unit
was not successfully
programmed or coded
Vehicle
•
Cause
Source of
fault
Remedial action
VCI has
poor Wi-Fi
connection
•
Source of
fault
Remedial action
Diagnostic
application
•
•
Restart update by pressing
•F8“
After successful
implementation, continue
with work step 5
Before the update:
Fault indication
Diagnostic application
crashes or the VCI
connection has been
aborted (the diagnosis
has no information on
battery voltage – see
the battery symbol
at the top right on the
Tester display)
•
Restart tester, connect VCI
with cable and try again
or: ensure that Wi-Fi
connection is stable, moving
vehicle to a suitable position
in workshop if necessary
During the update:
Fault indication
Cause
Diagnostic application
crashes or the VCI
connection has been
aborted (the diagnosis
has no information on
battery voltage – see
the battery symbol
at the top right on the
Tester display)
•
•
•
AfterSales
Checking the update
progress in the vehicle is
mandatory
No ignition change during
update
Do not restart the Tester
until the update has been
completed in the vehicle (tile
“Messages” --> Installation
“successful”)
When the update is
concluded in the vehicle,
verify that the update
is complete. For this
purpose, start control
Apr 30, 2026
Page 15 of 23
9
Service
WSJ0
ENU
Technical Information
2025
unit programming in the
integration test using the
‘Campaign’ function •F5“
on the Porsche Tester (if not
available, start the ‘Repair’
function with •F8“)
Implementation
of vehicle update
immediately after
starting not successful,
Vehicle update failed
error message
Date/time in vehicle
after disconnecting/reconnecting 12-V battery
(terminal 30) incorrect.
As a result, no software
update can be performed
Vehicle
Correct the date/time in the
vehicle:
•
•
•
•
HCP2 driver assistance
main control unit
(J1274) reports a “Code
signing fault” and a
communication error for
the Sub System Driver
Assistance control unit
in the results view
The affected control unit
was not successfully
programmed
Vehicle
•
•
•
•
•
•
•
Apr 30, 2026
Page 16 of 23
AfterSales
Open “Control unit
overview”
Open “Gateway HCP5” main
control unit
Open “Service/Maintenance” menu
Select and execute “Set
time” menu item
End the integration test with
•F12“
Open “Control unit
overview”
Open main control “Driver
assistance HCP2”
Open “Coding” menu
Menu item “Driver
assistance main control
unit HCP2 (J1274):
Programming control
unit individually (without
coding) after faulty update”
After successful
programming of the control
unit in the integration
test, re-start using the
‘Campaign’ function •F5“
(if not available, start the
‘Repair’ function with
•F8“)
After this has been
performed successfully,
continue with work step 4
Service
Technical Information
The Main control unit
for gateway HCP5
(J1273) logs into the
programming checksum
calculation with a
hardware check and the
value “NEGRESP”
2025
Affected control unit
was not successfully
programmed,
programming aborted
after 20%-30%
Vehicle
•
•
•
•
•
•
•
The progress of the
vehicle update is shown
on the Porsche Tester
only from approx. 30%
completion. This can be
up to 30 minutes after
the download
Diagnostic service
(RPC+) will not forward
the progress of the
update to the Tester
until it is approx. 30%
complete
Vehicle
HCP4 body electronics
main control device
(J519) reports
programming and
coding errors in the
results view
The affected control unit
was not successfully
programmed and coded
Vehicle
•
•
ENU
WSJ0
9
End the integration test with
•F12“
Open “Control unit
overview”
Open “Gateway HCP5” main
control unit
Open “Coding” menu
Menu item “Control unit for
gateway HCP5 (J1273):
Programming control
unit individually (without
coding) after faulty update”
After successful
programming of the control
unit in the integration
test, re-start using the
‘Campaign’ function •F5“
(if not available, start the
‘Repair’ function with
•F8“)
After this has been
performed successfully,
continue with work step 4
Correct behavior, no
intervention necessary
Wait until the progress is
displayed
Do not perform an ignition
change! This results in the
destruction of the control unit.
Fuses
•
•
•
•
J519 HCP4/1
J519 HCP4/2
J519 HCP4/4
J519 Secure
Pull, wait 30 seconds and plug it
back in correctly.
The fuses have different
parameters and must be
reinserted at exactly the same
AfterSales
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TSB/Document ID: No. WSJ0
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-30
MFR Internal Campaign ID/Software Version: WSJ0
Communication Type: Service Campaign
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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