No. 176-20

Service
Technical Information
176/20 ENU
WLL1
2
WLL1 - Re-Programming DME Control Unit (Workshop 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 2019 up to 2021
Vehicle Type:
Macan (95B)
Concerns:
DME control unit
Information:
Due to a software error in the DME Control unit, the engine on the affected vehicles may experience rough running while driving at engine speeds near the idle range at idle speed.
As a result, fault memory entries relating to implausible camshaft adjustment will be entered in the fault
memory.
Action
Required:
Re-program DME control unit.
Carry out control unit programming using the PIWIS Tester with test software version 39.900.040 (or a
higher software version) installed.
Information
When the DME control unit is programmed, the PDK control unit is also re-programmed automatically.
Then, both control units are 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). There are 470 vehicles
affected by this campaign.
Required tools
Tool:
•
•
9900 - PIWIS Tester 3 with PIWIS Tester software version 39.900.040 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 Battery charger 90A
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Preparatory work
NOTICE
Fault entry in the fault memory and control unit programming aborted due to undervoltage.
•
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 WLAN connection is unstable.
•
An unstable WiFi connection can interrupt communication between the PIWIS Tester 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 recognized
•
If the driver's key is not recognized in vehicles with Porsche Entry & Drive, programming cannot be started
or will be interrupted.

Switch on the ignition using the original driver’s key. To do this, replace the control unit in the ignition lock
with the original driver’s key if necessary.
Work Procedure: 1
Connect a battery charger with a current rating of at least 90 A (e.g. 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 into 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
9900 - PIWIS Tester 3 must be connected to the vehicle communication module (VCI) via the USB
cable. Then connect the communication module to the vehicle and switch on the PIWIS Tester.
4
On the PIWIS Tester start screen, call up the 'Diagnostics' application. The vehicle type is then read
out, the diagnostic application is started and the control unit selection screen is populated.
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Technical Information
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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 or coding.
Information
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:
39.900.040 (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.
The DME control unit and the PDK control unit
are re-programmed and then re-codedautomatically during the programming sequence.
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:
See  Technical Information '9X00IN Overview of
the programmed software versions'.
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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 "Fault finding"'.
Overview of the programmed software versions
Overview:
Overview:
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Model year 2019:
Exhaust emission
standard
Control unit
Software part no.
Software version
C6B without RDE
(I No. 7CM)
DME
95B906259G
0008
PDK
95B927156GM
0004
EU 6 Plus (W) / EU 4
without EOBD
(I no. 7MM) / (I no.
7GH)
DME
95B906259T
0001
PDK
95B927156GL
0004
EU 6 AG/H/I
(I no. 7CP)
DME
95B906259AB
0001
PDK
95B927156GJ
0004
LEV3 / TIER3 70
(I no. 7CE)
DME
95B906259AA
0002
PDK
95B927156GK
0004
Exhaust emission
standard
Control unit
Software part no.
Software version
C6B without RDE
(I No. 7CM)
DME
95B906259G
0009
PDK
95B927156GM
0004
EU 6 DG
(I no. 4BF)
DME
95B906259F
0006
PDK
95B927156GJ
0004
EU 6 Plus (W) / EU 4
without EOBD
(I no. 7MM) / (I no.
7GH)
DME
95B906259J
0008
PDK
95B927156GL
0004
LEV3 / TIER3 70
(I no. 7CE)
DME
95B906259H
0006
PDK
95B927156GK
0004
Model year 2020:
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Technical Information
Overview:
176/20 ENU
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Model year 2021:
Exhaust emission
standard
Control unit
Software part no.
Software version
C6B without RDE
(I No. 7CM)
DME
95B906259G
0009
PDK
95B927156GT
0001
EU 6 AP
(I no. 4BI)
DME
95B906259R
0002
PDK
95B927156HL
0002
EU 6 DG
(I no. 4BF)
DME
95B906259F
0006
PDK
95B927156GQ
0001
EU 6 Plus (W) / EU 4
without EOBD
(I no. 7MM) / (I no.
7GH)
DME
95B906259J
0008
PDK
95B927156GS
0001
Performing 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
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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
Throttle valve adaptation
Press •F8“ ('Stop') to end throttle valve adaptation.
Performing 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.
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Radiator shutter adaptation
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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.
4
Enter the campaign in the Warranty and Maintenance booklet.
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Warranty processing
Scope 1:
Working time:
Re-programming DME control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Performing throttle valve adaptation
Performing radiator shutter adaptation
Labor time: 55 TU
 Damage Code WLL1 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.
© 2020 Porsche Cars North America, Inc.
Dec 22, 2020
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