Select and confirm the menu item “Read/delete all fault memories” and confirm.

7.3

Press •F8“ to delete the displayed fault memory entries.

8

For new vehicles only – commission the vehicle; for this, carry out the “Vehicle handover” routine in full
according to the Porsche Tester instructions.

9

End logging and attach to PRMS ticket in the event of a fault.

10 Exit the diagnostic application. Switch off the ignition. Disconnect the Tester from the vehicle.
11 Switch off and disconnect the battery charger.
Information
During the test drive, the GPS is reconnected, and the tire settings must be checked and, if necessary,
adjusted again.
The activities performed during and after the test drive do not have to be carried out by the technician.
12 Perform a test drive.
13 Attach the completed checklist to the PQIS process line. ⇒ Technical Information '9X10IN Checklist'

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Technical Information

2026

14 Enter the campaign in the Warranty and Maintenance logbook.

Warranty processing
Information
The specified labor times were determined specifically for carrying out this campaign and include all
necessary preliminary and subsequent rework. The labor times may differ from those published in the Labor
Operation List in the PCSS.
Scope 1:

Re-programming control unit for rear-end electronics (J393)
•

valid for vehicles with ParkAssist including 3D Surround View (M-no. KA6) and the software version that
is lower than the target software version of the baseline
Labor time:
Re-programming rear end electronics control unit (J393) and various other
control units
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting Porsche Tester
Teaching the rear lid
Check readiness for driving
Reading out and deleting fault memories

Labor time: 104 TU

Þ Damage number WTE1 066 000 1
⇒
Scope 2:

Re-programming control unit for rear-end electronics (J393)
•

valid for vehicles without ParkAssist including 3D Surround View (M-no. KA6)
Labor time:
Re-programming rear end electronics control unit (J393) and various other
control units
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting Porsche Tester
Teaching the rear lid
Check readiness for driving
Reading out and deleting fault memories
Þ Damage number WTE1 066 000 1
⇒

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Labor time: 76 TU

Service

Technical Information

2026

ENU

WTE1

5

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“.
Work
Procedure:

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

•

Restart update by pressing
•F8“
After successful
implementation, continue
with work step 3

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

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Diagnostic
application

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)

•
•
•

•

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

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Diagnostic service
(RPC+) will not forward
the progress of the
update to the Tester
until it is approx. 30%
complete

AfterSales

Vehicle

•
•

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
unit programming in the
integration test using the
‘Campaign’ function •F5“
on the Porsche Tester
Correct behavior, no
intervention necessary
Wait until the progress is
displayed

Service

Technical Information

2026

ENU

WTE1

5

Valid fault codes after updating the software
Control unit

Fault code

Description

Remedial action

Brake electronics (J104)

C13F7F1

Bedding-in function,
active

•

Valid fault memory
entry after vehicle
handover

Front camera (R242)

B200FF2

implausible signal

•

After the test drive:
Fault memory
entry, passive

Front camera (R242)

U12EF00

Front camera for driver
assistance systems,
implausible signal

•

After the test drive:
Fault memory
entry, passive

Front camera (R242)

U147C00

External communication
(J949), implausible
signal

•

After the test drive:
Fault memory
entry, passive

Front camera (R242)

U198C00

Road graph, received
fault value

•

After the test drive:
Fault memory
entry, passive

Drive and chassis main
control unit HCP1
(J1312)

U045D00

Driver assistance main
control unit HCP2
(J1274), ETHERNET
data bus driver
assistance, implausible
signal

•

After the test drive:
Fault memory
entry, passive

Driver assistance main
control unit HCP2
(J1274)

B200FF2

Road graph, received
fault value

•

After the test drive:
Fault memory
entry, passive

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Checklist
Checklist:

Work step:

Scope:

Completed:

The checklist only refers to campaign WTE1. A different checklist from
another campaign must not be used.
1. Battery charger set to charging mode and charging process on
charger activated?

All

2. Ignition switched off and on again?

All

3. VCI and Porsche Tester 4 connected to one other (with cable or Wi-Fi
with good network quality)?

All

4. Has the user logged into PPN on the Porsche Tester?

All

5. Seat heating and seat ventilation not active?

All

6. Original remote control in emergency start tray (position noted)?

All

7. Logging in the diagnostic tester started?

All

8. Only for new vehicles: vehicle handover performed partially as
described in section “Re-programming control unit for rear-end
electronics (J393)” in order to deactivate transport protection?

New vehicles

9. In the control unit overview, •F3“ pressed to start the integration
test and then •F5“pressed to select the ‘Campaign’ function?

All

10. Logging in the diagnostic tester stopped?

All

11. Bus idle performed for 5 minutes?

All

12. Vehicle’s readiness for driving checked?

All

13. Fault memory read out and erased?

All

14. Rear lid taught via Rear-end electronics control unit >> Maintenance
repairs >> Teach tailgate?

All

15. Only for new vehicles: Vehicle handover completed?

New vehicles

16. Campaign entered in the Warranty and Maintenance logbook?

All

17. During the test drive:
17.1 GPS reconnected?
17.2 Tire settings checked and adjusted if necessary?

All

VIN:
Dealer number:
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.

Apr 14, 2026
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AfterSales