No. 175-20

Service
Technical Information
175/20 ENU
WLL0
2
WLL0 - Re-Programming DME Control Unit (Workshop Campaign)
Revision:
This bulletin replaces bulletin Group 2 175/20 WLLO, dated October 20, 2022.
Model Year:
As of 2019 up to 2020
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.
Vehicle Type:
Macan (95B)
Country/Market:
USA (C02), Canada (C36)
Concerns:
DME control unit
Information:
New DME control unit software that optimizes engine control and exhaust gas post-treatment is
available for the Macan.
In order to implement this optimization retrospectively for vehicles manufactured before the modified
software was introduced as standard, the DME control unit must be re-programmed on the affected
vehicles.
Action required: Re-program DME control unit.
Carry out control unit programming using the PIWIS Tester with software version 41.150.030 (or a
higher software version) installed.
Information
When the DME control unit is programmed, the PDK control unit is also re-programmed automatically.
Both control units are then coded automatically.
The total time required for programming and coding both control units is approx. 13 minutes.
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
AfterSales
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Technical Information
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Required tools
Tool:
•
•
9900 - PIWIS Tester 3 with PIWIS Tester software version 41.150.030 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90A
Preparatory work
NOTICE
Fault entry in the fault memory and control unit programming aborted due to low voltage.
•
Increased current draw during diagnosis or control unit programming can cause a drop in voltage, which
can result in one or more fault entries and the abnormal termination of the programming process.

Before starting control unit programming, connect a suitable battery charger with a current rating of at
least 90 A to the vehicle.
NOTICE
Control unit programming will be aborted if the Wi-Fi connection is unstable.
•
An unstable Wi-Fi connection can interrupt communication between PIWIS Tester II and the vehicle
communication module (VCI). As a result, control unit programming may be aborted.

During control unit programming, always connect the PIWIS Tester to the vehicle communication module
(VCI) via the USB cable.
NOTICE
Control unit programming will be aborted if the driver's key is not detected
•
If the driver's key is not detected in the vehicle, programming cannot be started or will be interrupted.

Place the driver's key with the back facing down into the front left storage compartment in the center
console to ensure a continuous radio link between the vehicle and the driver's key.
Work Procedure: 1
Connect a battery charger with a current rating of at least 90 A (e.g. VAS 5908 Battery charger
90A) to the jump-start terminals in the engine compartment and switch it on.
2
Place the driver's key with the back facing down in the front left storage compartment in the center
console.
This will guarantee an uninterrupted radio link between the vehicle and the driver's key.
3
Connect 9900 - PIWIS Tester 3 to the vehicle communication interface module (VCI) via the USB
cable. Connect communication module to the vehicle and switch on PIWIS Tester.
4
On the PIWIS Tester start screen, call up the ‘Diagnostics’ application. The vehicle type is then
selected, the diagnostic application is started and the control unit selection screen is populated.
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Technical Information
175/20 ENU
WLL0
2
Re-programming DME control unit
NOTICE
Use of a PIWIS Tester software version that is older than the specified version
•
Measure is ineffective

Always use the specified version or a higher version of the PIWIS Tester software for control unit
programming or coding.
Information
The procedure described here is based on the PIWIS Tester 3 software version 41.150.030.
The PIWIS Tester instructions take precedence and in the event of a discrepancy, these are the
instructions that must be followed.
Deviations may occur with later software versions, for example.
It is imperative that the PIWIS Tester remains online during control unit programming so that backup documentation of the software versions installed on the control units before and after programming is sent
to the Porsche After Sales systems.
Work Procedure: 1
Re-program DME control unit.
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 - section on "Programming"'.
For specific information on control unit programming during this campaign, see the table
below:
Required PIWIS Tester software version:
41.150.030 (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.
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Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
During the programming sequence, the DME
control unit as well as the PDK control unit is
re-programmed and then re-codedautomatically.
Programming sequence:
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.
Programming time (approx):
13 minutes
Software version programmed during this
campaign:
DME control unit, model year 2019:
•
•
Software version: 0003 (or higher)
Software Part No.: 95B906259AA (or higher)
DME control unit, model year 2020:
•
•
Software version: 0007 (or higher)
Software Part No.: 95B906259H (or higher)
Following control unit programming, the software
part number and version of the programmed data
record can be read out of the DME control unit in the
 'Extended identification' menu using the PIWIS
Tester.
Procedure in the event of abnormal
termination of control unit programming:
Repeat control unit programming by restarting
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 “Troubleshooting"'.
Selecting and erasing fault memories
Work Procedure: 1
2
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In the control unit selection screen ('Overview' menu), press •F7“ to call up the 'Additional
menu'.
Select the function 'Read all fault memories and erase if required' and press •F12“ ('Next') to
confirm your selection  Erase fault memory.
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The fault memories of the control units are selected.
3
Once you have selected the fault memories, check
the fault memory entries.
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.
Erase fault memory
4
Press •F8“ to delete fault memory entries.
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 the fault memories of individual control units cannot be erased, proceed as follows:
6
•
Switch off ignition.
•
Disconnect the PIWIS Tester diagnostic connector from the diagnostic socket.
•
Lock the vehicle using the driver’s key.
•
Wait approx. 1 minute before unlocking the vehicle again.
•
Plug the PIWIS Tester diagnostic connector into the diagnostic socket again and restore
communication with the vehicle.
•
Select the fault memories of these control units again and erase the fault memories separately.
Once you have erased the fault memories, select
the ‘Overview’ menu to return to the control unit
selection screen  Control unit selection.
Control unit selection
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Perform throttle valve adaptation
Work Procedure: 1
Select the 'DME' control unit in the control unit selection screen ('Overview' menu) and press •F12“
('Next') to confirm your selection.
2
Once the DME control unit has been found and is displayed in the overview, select the 'Maintenance/repairs' menu.
3
Select menu item  'Adaptations' and confirm your
selection by pressing •F12“ ('Next')  DME adaptations.
DME adaptations
4
Comply with the displayed preconditions and press
•F12“ ('Next') to confirm  Adaptation preconditions.
Adaptation preconditions
5
Select the  'Throttle valve adaptation' function
so that the corresponding text line turns blue and
press •F8“ (‘Start’) to start throttle valve adaptation
 Throttle valve adaptation.
6
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.
7
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Press •F8“ ('Stop') to end throttle valve adaptation.
AfterSales
Throttle valve adaptation
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Technical Information
175/20 ENU
WLL0
2
Perform radiator shutter adaptation
Work Procedure: 1
2
Select the  'Radiator shutter adaptation'
function so that the corresponding text line turns
blue and then press •F8“ ('Start') to start radiator
shutter adaptation  Radiator shutter adaptation.
Follow the instructions on the PIWIS Tester while
radiator shutter adaptation is being performed
 PIWIS instructions.
Once adaptation is complete, a tick will appear in the
"Value" field on the PIWIS Tester display.
Radiator shutter adaptation
If radiator shutter adaptation is not completed
successfully, the adaptation must be repeated.
3
End radiator shutter adaptation by pressing •F8“
('Stop').
4
Press •F11“ ('Back') to return to the start page of
the  'Maintenance/repairs' menu.
PIWIS instructions
5
Select the  'Overview' menu to return to the
control unit selection screen  Control unit selection.
Control unit selection
Concluding work
Work Procedure: 1
Switch off ignition.
2
Disconnect the PIWIS Tester from the vehicle.
3
Switch off and disconnect the battery charger.
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Attach Recall Proof of Completion label to the front lid (California dealers only).
Instructions for attaching labels
•
•
•
•
4.1
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.
Fill out the Recall Proof of Completion label
 Recall Proof of Completion Label fully
and correctly. This includes the recall code
“WLL0”, your dealer code and the repair
date.
4.2
4.3
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 — Macan (95B)
position accordingly) -arrow- using a suitable
cleaning agent and a clean, grease-free and
lint-free cloth.
Recall Proof of Completion Label
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 — Macan (95B) position accordingly)
-arrow-.
Exemplary illustration — Macan (95B)
position accordingly
4.4
5
Close front lid.
Enter the campaign in the Warranty and Maintenance
booklet.
A template of the proof of correction
can be downloaded from PPN:
https://ppn.porsche.com/portal/docs/DOC-427025
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AfterSales
Proof of Completion Label: specified
position (Exemplary illustration —
Macan (95B) position accordingly)
Service
Technical Information
175/20 ENU
WLL0
2
Warranty processing
Scope 1:
Labor time:
Re-programming DME control unit
Includes:
Connecting and disconnecting battery charger
Connect and disconnect PIWIS Tester
Selecting and erasing fault memories
Perform throttle valve adaptation
Perform radiator shutter adaptation
Attach Recall Proof of Completion label and provide signed
proof of correction to customer (California dealers only)
Labor time: 71 TU
Required parts:
PNA EMI 000 00
Label
– Recall Proof of
Completion
1 ea.
PNA 999 100 235
Certificate
- Recall Proof of
Correction
1 ea.
* California dealers only:
•
•
For warranty processing, enter the Part No. PNA EMI 000 00 with the designation "label" as a
local part at US$ 0.34 in the warranty claim.
For warranty processing, enter the Part No. PNA 999 100 235 with the designation "certificate"
as a local part at US$ 0.01 in the warranty claim.
:  Damage Code WLL0 066 000 1
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2023 Porsche Cars North America, Inc.
AfterSales
Jan 10, 2023
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