High-voltage DC charger (booster)

1250

•

HV voltage converter

1230

•

Head-up display

1208

•

Instrument cluster

0595

•

Over-the-air (OTA) control unit

1221

Sequence 2 includes other control units from the software
release VR12.1.1, which are only re-coded.
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.

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Technical Information

120/21 ENU WMH0

Procedure in the event of
abnormal termination of control
unit programming:

•
•

•

•

•

Procedure in the event of error
messages appearing during the
programming sequence:

9

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.

 Workshop Manual '9X00IN Basic instructions and
procedure for control unit programming using the PIWIS
Tester - section on "Fault finding"'.

Concluding work - Scope 2
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.

Work Procedure: 1

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.

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2

3

Manually retract the rear spoiler, which extended automatically during programming.
2.1

Select the 'Rear spoiler' control unit in the control unit selection screen ('Overview' menu)
and press •F12“ ('Next') to confirm.

2.2

Once the rear spoiler control unit has been found and is displayed in the overview, select the
'Maintenance/repairs' menu.

2.3

Select the function ‘Teach rear spoiler’ and press •F12“ (‘Next’) to confirm.

2.4

Read the instructions and confirm by pressing •F12“ ('Next').

2.5

Meet the displayed conditions that must be checked manually and tick the relevant 'Status'
box.

2.6

Select the Teach rear spoiler function and press •F8“ ('Execute') to confirm.

2.7

Once the rear spoiler has been taught and retracted fully, select the 'Overview' menu to
return to the control unit selection screen.

Only relevant if the message "Tire pressure monitoring fault - Service necessary" is displayed:
Teach Tire Pressure Monitoring (TPM) system using the PIWIS Tester.  Workshop Manual '443225
Teaching wheel electronics'
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.

4

Read out and erase the fault memories of all control units.
4.1

Press •F7“ in the control unit selection screen ('Overview' menu) to call up the Additional
menu.

4.2

Select the function “Read all fault memories
and erase if required” and press •F12“
('Next') to confirm your selection  Erasing
fault memories.
The fault memories of the control units are
read out.

4.3

Once you have read out the fault memories,
check the fault memory entries.
Erasing fault memories
Information
If control units are found to have faults that
are not caused by control unit programming, these must first be found and corrected. This
work cannot be invoiced under the workshop campaign number.

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9

4.4

Press •F8“ to delete fault memory entries.

4.5

Press •F12“ ('Yes') in response to the question as to whether you really want to delete all
fault memory entries.
The faults stored in the fault memories of the various control units are deleted.
Information
If fault memory entries for individual control units cannot be deleted, proceed as follows:

4.6

•

End operational readiness (switch off ignition).

•

Disconnect the PIWIS Tester diagnostic connector from the diagnostic socket.

•

Lock the vehicle using the driver's key and remove the driver's key from the proximity of
the vehicle (approx. 10 metres).

•

Unlock the vehicle again after waiting for at least 15 minutes.

•

Restore operational readiness (switch on ignition).

•

Plug the PIWIS Tester diagnostic connector into the diagnostic socket again and restore
communication with the vehicle.

•

Read out the fault memory again and delete any fault memory entries that are stored.

Once you have erased the fault memories,
select the 'Overview' menu to return to the
control unit selection screen  Control unit
selection.

5

Create vehicle analysis log (VAL) using the PIWIS
Tester.
Mark the vehicle analysis log you have just created
with the attribute "Final VAL" and after carrying out
the campaign, return it using the PIWIS Tester.

6

End operational readiness (switch off ignition).

7

Disconnect the PIWIS Tester from the vehicle.

Control unit selection

Information
Connect the PIWIS Tester to a network as soon as possible and log into the PPN in order to transfer
the backup documentation created during this campaign to the PAG systems.
8

Switch off and disconnect the battery charger.

9

Enter the campaign in the Warranty and Maintenance booklet.
–End of action required –

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For warranty processing, see Scope 2 under  Technical Information '443225 Warranty
processing'

Re-programming various control units - Scope 3
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.
NOTICE

Using the software on vehicles that are not assigned to this campaign:
•

Risk of damage to control unit



Use the listed software versions only for the vehicles assigned to the campaign.

Work Procedure: 1

Select the guest account from the central display (PCM) and activate Privacy mode (available in
some countries).

Information
To ensure that no user-specific settings from cloud-based services (Porsche Connect & My
Porsche) are lost during the update, activate Privacy mode before starting the update. When Privacy
mode is activated, communication between the vehicle and the Porsche Connect app and My Porsche is
disabled. No vehicle-specific information is transferred. As a result, settings cannot be configured on the
vehicle using the Porsche Connect app or My Porsche.
When the instrument cluster and central computer are re-programmed, the individual settings
implemented in the vehicle by the customer will be lost and reset to the default values of the country
version that applies to the vehicle.
After carrying out the campaign, please inform customers that personal settings they have implemented
in the instrument cluster and central display of the central computer will have to be set again and provide
them with any help and support they need for setting the relevant options.
This affects the following settings, for example:

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•

Individual settings for tubes 1 to 3 of the instrument cluster as well as the extended map view or
reduced view of the instrument cluster

•

Individual settings of the head-up display (HUD)

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120/21 ENU WMH0

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•

Selected functions of individual tubes in the instrument cluster, e.g. auto zoom, 3D map and satellite
map

•

Arrangement of tiles in the home screen and MyScreen on the central display

•

Individual seat, exterior mirror and ergonomic settings

•

Air conditioning settings, such as ventilation and air quality

•

Privacy settings

•

Frequency setting of the garage door opener (Homelink)
Information

•

Distance measuring sensor control unit (ACC): Programming is performed in two stages
because of the high data volume. First, the bootloader ACC is programmed and an error message
is displayed. This error message in step 5 can be ignored and you can continue with the campaign.
Follow the instructions on the PIWIS Tester.

•

Airbag control unit: Manual intermediate steps are required after programming the central control
unit for assistance systems (zFAS). For safety reasons, the airbag is unlocked during a guided
procedure prior to coding and is then locked again when coding is complete. Follow the instructions
on the PIWIS Tester. If the guided airbag procedure is aborted, the airbag must be locked again
manually after completion of sequence 1. For instructions, see:  Workshop Manual '695355
Replacing airbag control unit'

•

Rear-end electronics control unit (BCM 2): If the driver's key is not detected in the vehicle,
programming of the rear-end electronic cannot be started or will be interrupted. You must therefore
position the driver's key with the back facing forward upright between the holding struts in the rear
cupholder (emergency start tray) to guarantee a permanent radio link between the vehicle and
remote control.

2

Start control unit programming VR12.1.1 sequence 1.
The basic procedure for control unit programming is described in the Workshop Manual 
Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'.
Sequence 1:
For specific information on control unit programming in this sequence, see the table
below:
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:

K4M1S

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Technical Information

ENU 120/21

Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.

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 125 minutes

Software versions programmed during
this sequence:

•

Distance measuring sensor
control unit (ACC)

0496

•

Front-end electronics control
unit (BCM1)

0712

•

Rear-end electronics control unit
(BCM2)

0565

•

Radar sensor for front corner
radar, left and right

0485

•

Lane Change Assist control unit,
left and right

0486

•

Central control unit for
assistance systems (zFAS)

0365

•

Airbag control unit

3303

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:

•
•

•

•

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End and restore operational readiness (switch
ignition off and then on again).
Read out and erase the fault memory 