Service

Technical Information

181/21 ENU

AMC2

2

AMC2 - Re-Programming DME and Transmission Control Unit (Recall Campaign)

Revision:

This bulletin replaces bulletin Group 2 181/21 AMC2, dated December 17, 2021.

Model Year:

As of 2014 up to 2018

Important:

CRITICAL WARNING -This campaign includes steps where control unit(s) in the vehicle will be
programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5
volts during this programming. Failure to maintain this voltage could result in damaged control unit(s).
Damage caused by inadequate voltage during programming is not a warrantable defect. The technician
must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document
the actual voltage on the repair order.

Model Line:

Panamera (970)
Cayenne (92A)

Concerns:

DME control unit

Information:

During internal tests, Porsche has discovered that increased exhaust emissions can occur
under certain driving conditions in Sport+ mode on the Panamera (970) Basic/S/Turbo/Turbo
S/GTS and Cayenne (92A) GTS models.

Action required: Re-program the DME control unit and transmission control unit using the PIWIS Tester with software
version 41.200.040 (or higher) installed.
Information
During programming, the DME control unit and the PDK control unit or transmission control unit are automatically programmed and then coded.
It takes approx. 10 to 12 minutes in total to program and code both control units.
Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information).

Required tools
Tools:

•
•

9900 - PIWIS Tester 3 with PIWIS Tester software version 41.200.040 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 Battery charger 90A

AfterSales

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Technical Information

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AMC2

Re-programming DME control unit
NOTICE
Use of a PIWIS Tester software version that is older than the prescribed version.
•

Measure is ineffective



Always use the prescribed version or a higher version of the PIWIS Tester software for control unit
programming and coding.
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.



Retract roll-up sun blinds on the rear side windows before starting programming or coding.

Information
The procedure described here is based on the PIWIS Tester 3 software version 41.200.040.
The PIWIS Tester instructions take precedence and in the event of a discrepancy, these are the
instructions that must be followed.
A discrepancy may arise with later software versions for example.

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.
Work Procedure: 1

2

Carry out general preliminary work for control unit programming as described in  Workshop
Manual 'Basic instructions and procedure for control unit programming using the PIWIS Tester'.
Re-program the DME control unit.
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'.
For specific information on control unit programming during this campaign, see table
below.

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AfterSales

Service

Technical Information

181/21 ENU

AMC2

2

Required PIWIS Tester software version:

41.200.040 (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.
Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
During the programming sequence, the DME
control unit is re-programmed first, then the PDK
control unit is re-programmed.

Programming sequence:

Both 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 switch the ignition off
and then back on again after a certain waiting time.
Backup documentation of the new software versions
is then performed.
The programming sequence takes
(approx.):

12 minutes

Software version programmed during this
campaign:

See  Technical Information '9X00IN Software
version' section.

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

• Switch ignition off and then on again.
• Read out and erase fault memories  Workshop
Manual '9X00IN Basic instructions and procedure
for control unit programming using the PIWIS Tester section on "Subsequent work"'.
• Repeat control unit programming by restarting
programming.

Procedure in the event of other 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"'.

3

Re-connect electric plug connection for the fan blower.

4

Perform throttle valve adaptation.
4.1

Select the 'DME' control unit in the control unit selection screen ('Overview' menu) and press
•>>“ to confirm your selection.

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4.2

Select menu item  'Adaptations' and confirm your selection by pressing •>>“.

4.3

Comply with the displayed preconditions and press •>>“ to confirm

4.4

Select the  'Throttle valve adaptation' function so that the corresponding text line turns
blue and press •F8“ to start throttle valve adaptation .

4.5

Follow the instructions on the PIWIS Tester while throttle valve adaptation is being performed.
Once throttle valve adaptation is complete, a tick will appear in the 'Value' field on the PIWIS
Tester display. If throttle valve adaptation is not completed successfully, adaptation must be
repeated.

Perform engine torque loss adaptation.
To obtain the engine temperature required for engine torque loss adaptation (80 °C), leave the
engine running in selector-lever position “P” until the required temperature is reached.
Conditions/procedure for engine torque loss adaptation:
•
•
•
•
•

Engine temperature is at least 80 °C (the engine temperature can be read out in the “Actual
values” menu using the PIWIS Tester).
Position steering wheel straight ahead.
PDK selector lever in position P.
Leave engine running at idle speed for 3 minutes with air conditioning switched off.
Then leave engine running at idle speed for 3 minutes with air conditioning switched on (normal
load).

6

Switch off ignition.

7

Disconnect the PIWIS Tester from the vehicle.

8

Switch off and disconnect the battery charger.

9

On vehicles with Porsche Entry & Drive, replace the original driver's key in the ignition lock with the
control unit again.

10 Enter the campaign in the Warranty and Maintenance booklet.

Re-programming DME control unit
Work Procedure: 1

2

Carry out general preliminary work for control unit programming as described in  Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming using the PIWIS
Tester'.
Re-program the DME control unit.
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'.

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AfterSales

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Technical Information

181/21 ENU

AMC2

2

For specific information on control unit programming during this campaign, see table
below.
Required PIWIS Tester software version:

41.200.040 (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.
Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
During the programming sequence, the DME
control unit is re-programmed first, then the
transmission control unit is re-programmed.

Programming sequence:

Both 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 switch the ignition off
and then back on again after a certain waiting time.
Backup documentation of the new software versions
is then performed.

3

The programming sequence takes
(approx.):

10 minutes

Software version programmed during this
campaign:

See  Technical Information '9X00IN Software
version' section.

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

• Switch ignition off and then on again.
• Read out and erase fault memories  Workshop
Manual '9X00IN Basic instructions and procedure
for control unit programming using the PIWIS Tester section on "Subsequent work"'.
• Repeat control unit programming by restarting
programming.

Procedure in the event of other 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"'.

Re-connect electric plug connection for the fan blower.

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AMC2
4

5

6

Perform throttle valve adaptation.
4.1

Select the 'DME' control unit in the control unit selection screen ('Overview' menu) and press
•>>“ to confirm your selection.

4.2

Select menu item  'Adaptations' and confirm your selection by pressing •>>“.

4.3

Comply with the displayed preconditions and press •>>“ to confirm

4.4

Select the  'Throttle valve adaptation' function so that the corresponding text line turns
blue and press •F8“ to start throttle valve adaptation .

4.5

Follow the instructions on the PIWIS Tester while throttle valve adaptation is being performed.
Once throttle valve adaptation is complete, a tick will appear in the 'Value' field on the PIWIS
Tester display. If throttle valve adaptation is not completed successfully, adaptation must be
repeated.

Perform radiator shutter adaptation.
5.1

Select the  'Radiator shutter adaptation' function so that the corresponding text line
turns blue and then press •F8“ to start radiator shutter adaptation.

5.2

Follow the instructions on the PIWIS Tester while radiator shutter adaptation is being
performed . Once adaptation is complete, a tick will appear in the 'Value' field on the PIWIS
Tester display. If radiator shutter adaptation is not completed successfully, the adaptation