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

11.3

Once you have read out the fault memories,
check the fault memory entries.
Information
Erasing fault memories
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.

11.4

Press •F8“ to delete fault memory entries.

11.5

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:

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•

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 meter/ 32.8 ft).

•

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

•

Restore operational readiness (switch on ignition).

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•

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 control unit selection  Control unit
selection.

12 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.
13 Attach the working log to the PQIS line.

Control unit selection

13.1

Select the PCCS button under Applications in the PIWIS Tester.

13.2

Log in using the PIWIS Tester and complete the relevant process in the PCCS.

13.3

Select File Upload in the PIWIS Tester.

13.4

Select Pdf Prints in the selection menu.
Information
The relevant timestamps of the process logged are displayed on the Tester.

13.5

Attach the work logs you have just created to the quality line.

14 End operational readiness (switch off ignition).
15 Disconnect the PIWIS Tester from the vehicle.
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.
16 Switch off and disconnect the battery charger.
17 Replace Taycan Owner's Manual with an updated Taycan Owner's Manual with order number WKD
Y1A 00 xx21 (xx = language code, e.g. 10, 20, 30, etc.).
Also remove the old Owner's Manual from the vehicle and dispose of it.
18 Enter the campaign in the Warranty and Maintenance booklet.
– End of action required –

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For warranty processing, see Scopes 1-3 under  Technical Information '443225 Warranty
processing'

Re-programming power electronics - Scope 5
Information
When the front and rear power electronics is programmed, the DME control unit is also re-programmed
automatically. It takes approx. 10 minutes in total to program these control units.
Before starting programming and after the control units have been programmed successfully, the
procedure for sending backup documentation of the software versions installed on the control units
to the PAG systems will be started automatically.
Work Procedure: 1

Re-program power electronics and engine electronics (DME) control unit.
General preliminary work and the basic procedure for programming a control unit is described in the
Workshop Manual  Workshop Manual '9X00IN Basic instructions and procedure for control unit
programming using the PIWIS Tester'.
For specific information on control unit programming during this campaign, see table
below.
Required PIWIS Tester software version:

40.550.040 (or higher)

Type of control unit programming:

Control unit programming using the 'Automatic
programming' function for the DME control unit:
'DME' control unit – 'Coding/programming' menu
– 'Automatic programming' function.

Programming sequence:

Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
First the DME control unit and then the front
power electronics and rear power electronics
are re-programmed during the programming
sequence.
The control units are then re-codedautomatically.
Do not interrupt programming and coding.
Once the control units have been programmed and
coded, you will be prompted to end and then restore
operational readiness after a certain waiting time.
Backup documentation of the new software versions
is then performed.

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The programming sequence takes
(approx.):

10 minutes

Software version programmed during this
campaign:

Power electronics, front and rear

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Software version: 0012
Engine electronics (DME)
Software version: 0014
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 other error
messages appearing during the
programming sequence:
2

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"'.

Create new working log.
2.1

After programming has been performed, go back to the control unit overview.

2.2

Select the DME control unit.

2.3

Select control unit information.

2.4

Select power electronics on rear axle.

2.5

Select control unit information.

2.6

Select power electronics on front axle (if available).

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2.7

Select control unit information.

2.8

Go back to the control unit overview and confirm with •F4“('Save') at the bottom.

2.9

Select •F10“ ('Logs').

2.10

Select the log type Working log.

2.11

Rename and store the working log you have just created with the designation of the
sequence carried out.

2.12

Mark the working log and use •F10“ ('Display').

2.13

Select the Printer icon at the top right of the selection bar.

2.14

Select printer ('PDF').

2.15

Print the working log, saving it automatically to the Tester.

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.

Work Procedure: 1

2

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Manually retract the rear spoiler, which extended automatically during programming.
1.1

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

1.2

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

1.3

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

1.4

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

1.5

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

1.6

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

1.7

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

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

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2.1

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

2.2

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

2.3

Once you have read out the fault memories,
check the fault memory entries.
Information
Erasing fault memories
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.

2.4

Press •F8“ to delete fault memory entries.

2.5

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:
•

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 meter/ 32.8 ft).

•

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.

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2.6

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

3

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.

4

Attach the working log to the PQIS line.

Control unit selection

4.1

Select the PCCS button under Applications in the PIWIS Tester.

4.2

Log in using the PIWIS Tester and complete the relevant process in the PCCS.

4.3

Select File Upload in the PIWIS Tester.

4.4

Select Pdf Prints in the selection menu.
Information
The relevant timestamps of the process logged are displayed on the Tester.

4.5

Attach the work logs you have just created to the quality line.

5

End operational readiness (switch off ignition).

6

Disconnect the PIWIS Tester from the vehicle.
Information
Connect the PIWIS Tester to a network as soon as possible and log into the PPN in order to transfer