Service

Technical Information

148/21 ENU

AMC0

2

AMC0 - Re-Programming DME and Transmission Control Unit (Recall Campaign)

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 Year:

As of 2012 up to 2016

Revision:

This bulletin replaces bulletin Group 2 148/21 AMC0, dated February 11, 2022.

Model Line:

911 (991)
Boxster/ Cayman (981)

Concerns:

DME control unit

Information:

During internal tests, Porsche has discovered that increased exhaust emissions may occur
under certain driving conditions in Sport+ mode on the 911 (991 I) Basic/S/GTS/GT3 and
Boxster/ Cayman Basic/S (981).

Action required: Re-program the DME control unit and transmission control unit using the PIWIS Tester with software
version 40.850.045 (or higher) installed.
Information
During programming, the DME control unit and the PDK control unit are automatically programmed and
then coded.
It takes approx. 15 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 40.850.045 (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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2

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Technical Information

ENU 148/21

AMC0

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 40.850.045.
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.
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'.
For specific information on control unit programming during this campaign, see table
below.
Required PIWIS Tester software version:

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Page 2 of 9

40.850.045 (or higher)

AfterSales

Service

Technical Information

148/21 ENU

Type of control unit programming:

AMC0

2

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, depending
on the model year the instrument cluster and then
the PDK control unit is re-programmed.

Programming sequence:

Both control units are then re-coded automatically.
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.):

15 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

Select the DME control unit in the overview.

4

Select Maintenance/repairs. Press •F12“ to continue.

5

Select Throttle valve adaptation. Press •F12“ to continue.

6

Select function. Press •F12“ to continue.

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Technical Information

ENU 148/21

AMC0
7

Adapt function. Press •F8“ to start.
Perform adaptation according to menu guidance. End adaptation with •F8“.

8

Read out all fault memories, work through faults that are stored if necessary and clear the 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.

9

Exit the diagnostic application.

10 Switch off ignition.
11 Disconnect the Tester from the vehicle.
12 Switch off and disconnect the battery charger.
13 Attach Recall Proof of Completion label to the front lid (California dealers only).
Instructions for attaching labels
•
•
•
•

Surfaces on which you intend to attach the label must be clean, dry and free from grease and oil
residues.
Before attaching the label, clean the surfaces using a suitable cleaning agent and a clean,
grease-free and lint-free cloth.
This label must not be affixed over existing label.
Attach label only at the specified positions.

13.1

Fill out the Recall Proof of Completion label

 Recall Proof of Completion Label fully
and correctly. This includes the recall code
“AMC0”, your dealer code and the repair
date.
13.2

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Clean the surface in the lower area on the
front lid at the left-hand side in direction
of travel at which the Recall Proof of
Completion label must be attached  Proof
of Completion Label: specified position
(Exemplary illustration — 911 (991),
Boxster/ Cayman (981) position accordingly)
-arrow- using a suitable cleaning agent and a
clean, grease-free and lint-free cloth.

AfterSales

Recall Proof of Completion Label

Service

Technical Information
13.3

148/21 ENU

AMC0

2

Affix Recall Proof of Completion label in the
lower area of the front lid at the lefthand side
in direction of travel  Proof of Completion
Label: specified position (Exemplary illustration — 911 (991), Boxster/ Cayman (981)
position accordingly) -arrow-.
Exemplary illustration — 911 (991) position
accordingly

13.4

Close front lid.

14 Enter the campaign in the Warranty and Maintenance
booklet and provide signed proof of correction to
customer.
A template of the proof of correction
can be downloaded from PPN:
https://ppn.porsche.com/portal/docs/DOC-387933

Proof of Completion Label: specified
position (Exemplary illustration
— 911 (991), Boxster/ Cayman
(981) position accordingly)

For warranty processing, see the section  Technical Information '9X00IN Warranty processing'.

Software overview
911 (991):

Type

Model year

Differential Lock

Software part number

Software
version

911

2012-2016

No

DME

DME

99161861213

3183

Transmission

Transmission

99161837118

Q061
911

2012-2016

Yes (with old differential
lock)

DME

DME

99161861213

3183

Transmission

Transmission

99161837019

Q061
911

2012-2016

Yes (with new differential
lock)

DME

DME