NHTSA ID Number: 10200890
Manufacturer Communication Number: No. 120-21
TSB/Document Date: 2021-09-02
Summary
Porsche
service campaign information for Workshop Campaign WMH0 - Re-Programming Various Control Units.
9
Service
Technical Information
ENU 120/21
WMH0
•
Over-the-air (OTA) control unit
1221
•
OTA partition
1221
•
High-voltage charger (OBC)
11 kW
1083
•
Battery sensor
4174
•
Transmission control unit (EGS)
0250
Following control unit programming, the software
version can be read out of the relevant control unit in
the 'Extended identifications' menu using the PIWIS
Tester.
Procedure in the event of abnormal
termination of control unit programming:
•
•
•
•
•
Procedure in the event of error messages
appearing during the programming
sequence:
End and restore operational readiness (switch
ignition off and then on again).
Read out and erase the fault memory
Workshop Manual '9X00IN Basic instructions
and procedure for control unit programming
using the PIWIS Tester'.
Repeat control unit programming by entering
the programming code again, whereby
extended logging must be started using the key
combination •Ctrl“ + •L“.
Extended logging records diagnostic software
data, particularly vehicle communication data,
which is required for analysing the issues that
caused programming to be aborted.
If control unit programming is aborted a second
time, stop operational readiness for approx.
15 minutes (switch off ignition) and repeat the
procedure described here again.
Workshop Manual '9X00IN Basic instructions and
procedure for control unit programming using the
PIWIS Tester - section on "Fault finding"'.
Information
•
The new software version of the additional instrument (stopwatch) and multifunction steering
wheel is only shown after restarting these components. This restart takes place in bus idle during
the concluding work.
8
Start control unit programming VR12.1.1 sequence 3.
For specific information on control unit programming in this sequence, see the table
below:
Aug 24, 2021
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AfterSales
Service
Technical Information
120/21 ENU WMH0
9
Required PIWIS Tester software version:
40.450.020 (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:
K4M3S
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 (approx.):
up to 130 minutes
Software versions programmed during
this campaign:
•
Multifunction steering wheel
0091
•
Seat adjustment control unit,
front
0064
•
Additional instrument control
unit (stopwatch)
0015
•
Door control unit, front and rear
0390
•
Control unit for exterior
acoustics (eSound)
0100
•
Control unit for interior
acoustics (iSound)
0290
•
Display and operator control unit
in rear center console
1170
•
Connect control unit
0236
or
0237
or
0238
or
0239
or
0245
AfterSales
Aug 24, 2021
Page 53 of 65
9
Service
WMH0
Technical Information
ENU 120/21
or
0247
Following control unit programming, the software
version can be read out of the relevant control unit in
the 'Extended identifications' menu using the PIWIS
Tester.
Procedure in the event of abnormal
termination of control unit programming:
•
•
•
•
•
Procedure in the event of error messages
appearing during the programming
sequence:
Workshop Manual '9X00IN Basic instructions and
procedure for control unit programming using the
PIWIS Tester - section on "Fault finding"'.
Concluding work - Scope 5
WARNING
Electrically moved side windows and rear spoiler
•
Danger of limbs being trapped or severed
•
Risk of damage to components
Do not reach into the danger area.
Keep third parties away from the danger area.
Do not move components or tools into the danger area.
Aug 24, 2021
Page 54 of 65
End and restore operational readiness (switch
ignition off and then on again).
Read out and erase the fault memory
Workshop Manual '9X00IN Basic instructions
and procedure for control unit programming
using the PIWIS Tester'.
Repeat control unit programming by entering
the programming code again, whereby
extended logging must be started using the key
combination •Ctrl“ + •L“.
Extended logging records diagnostic software
data, particularly vehicle communication data,
which is required for analysing the issues that
caused programming to be aborted.
If control unit programming is aborted a second
time, end operational readiness for approx.
15 minutes (switch off ignition) and repeat the
procedure described here again.
AfterSales
Service
Technical Information
120/21 ENU WMH0
9
NOTICE
Movement of the rear wheels by activating the electric motor; vehicle driving off when the wheels are touching
the ground
•
Personal injury as a result of wheel or vehicle movement
•
Material damage to vehicle, drive or brake components
Raise the vehicle on a lifting platform until the drive wheels are free
Press the foot brake during adaptation
Cordon off the work area
NOTICE
Programming interrupted
•
Malfunctions in control unit
•
Risk of damage to control unit
Route the line between the vehicle communication module (VCI) and diagnostic socket on the vehicle
without tension and make sure that the connector is inserted fully into the diagnostic socket.
Check that the rechargeable battery for the PIWIS Tester is charged sufficiently. Connect the PIWIS Tester
to the power supply unit if necessary.
Information
In the menu-guided procedure, check the 'Teach wheel IDs' menu item after confirming with •F12“ to
make sure that the function 'Teach 2nd wheel IDs without driving' is selected.
Then, select the function '2nd wheel IDs unknown' and continue the procedure according to menu
guidance.
Work Procedure: 1
2
Establish bus idle for at least 15 minutes.
1.1
End operational readiness (switch off ignition).
1.2
Disconnect the PIWIS Tester diagnostic connector from the diagnostic socket.
1.3
Lock the vehicle using the driver's key and remove the driver's key from the proximity of the
vehicle (approx. 10 metres).
1.4
Unlock the vehicle again after waiting for at least 15 minutes.
1.5
Plug the PIWIS Tester diagnostic connector into the diagnostic socket again and restore
communication with the vehicle.
Move the vehicle onto a lifting platform, but do not raise it yet.
Follow the instructions on the PIWIS Tester for raising the vehicle during the following sequence.
AfterSales
Aug 24, 2021
Page 55 of 65
9
Service
Technical Information
ENU 120/21
WMH0
Information
The current version of the onboard Driver's Manual has been available online since 5 March 2021.
A blank USB storage medium is required for installing the onboard Driver's Manual (approx. 100 MB). If
there is already data stored on the USB storage medium, this will be deleted during the procedure.
Information
Before starting sequence 5 (subsequent work), connect the PIWIS Tester to a network to establish an
Internet connection. The PIWIS Tester must be connected online for the subsequent work described
below and for installing the onboard Driver's Manual.
Information
•
Component protection: Component protection must only be taught for the control unit for
assistance systems (zFAS). To do this, select component protection for assistance systems
(zFAS) in the procedure. If the component protection teaching process is aborted, stop sequence
5 and read and follow the additional information provided under Technical Information '9X00IN
Additional instructions for the concluding work'.
•
Enabled functions: If function activation is aborted, component protection must first be taught
again. Then, start sequence 5 again in order to restore the enabled functions.
•
Coding of all control units: Always allow coding to run to the end of the process. If individual
coding routines fail, the relevant control units can be selected manually in the overview afterwards
and coded again individually.
3
Start subsequent work for various control units (sequence 5).
Required PIWIS Tester software version:
40.450.020 (or higher)
Programming code:
K4M5S
Work Procedure:
Read and follow the information and
instructions on the PIWIS Tester during
the guided procedure for the subsequent
work.
Do not interrupt the process.
Programming time (approx.):
Aug 24, 2021
Page 56 of 65
AfterSales
up to 55 minutes
Service
Technical Information
120/21 ENU WMH0
Subsequent work carried out during this process
•
9
Distance measuring sensor (ACC) Reset personalization
For manual procedure, see Workshop
Manual '278555 Replacing control unit for
distance measuring sensor'.
•
Air conditioning - Teach servo motors
For the manual procedure, see relevant
servo motor Workshop Manual 872019xx.
•
Commissioning rear-differential lock
For manual procedure, see Workshop
Manual '397555 Replacing control unit for
rear-differential lock'.
•
Engine electronics (DME) transmission
adaptation
For manual procedure, see Workshop
Manual '247055 Replacing DME control
unit'.
•
Door standardization, front and rear
For manual procedure, see
•
•
•
Workshop Manual '577355
Replacing front door control unit'
Workshop Manual '587355
Replacing rear door control unit'
Teaching component protection
For manual procedure, see Workshop
Manual '903555 Replacing gateway
control unit'. Select the control unit for
assistance systems (zFAS) in the PIWIS
Tester procedure.
•
Restoring enabling functions
For manual procedure, see Workshop
Manual '903555 Replacing gateway control
unit'.
•
Installing onboard Driver's Manual
For manual procedure, see Workshop
Manual '0X01IN Diagnostic system:
Performing vehicle handover'.
•
AfterSales
Automatic coding of all control units
Aug 24, 2021
Page 57 of 65
9
Service
Technical Information
ENU 120/21
WMH0
Procedure if the sequence is aborted:
•
•
•
•
•
•
Procedure in the event of error messages
appearing during the programming sequence:
4
5
Aug 24, 2021
Page 58 of 65
End and restore operational readiness
(switch ignition off and then on again).
Read out and erase the fault memory
Workshop Manual '9X00IN Basic
instructions and procedure for control
unit programming using the PIWIS
Tester'.
Repeat subsequent work sequence
by entering the programming code
again, whereby extended logging must
be started using the key combination
•Ctrl“ + •L“.
Extended logging records diagnostic
software data, particularly vehicle
communication data, which is required
for analysing the issues that caused
programming to be aborted.
If subsequent work is aborted a second
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TSB/Document ID: No. 120-21
Replacement Service Bulletin Number:
MFR Communication Date: 2021-08-24
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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