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WLA0 - 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 2015 up to 2018

Vehicle type:

Macan S (95B)
Macan Turbo with Performance package (95B)

Country/market:

USA (C02)
Canada (C36)

Subject:

DME control unit

Information:

When converting the engine power specification from kilowatts to horsepower for the affected
vehicles, the conversion factor for the European unit (hp) was used instead of the unit that is
normally used in the affected markets, SAE net horsepower (SAE hp).
As a result, the engine power specification is on average approx. 1.4% higher than the actual engine
power.

Remedial
Action:

Re-program the DME control unit using the PIWIS Tester with test software version 39.200.010 or a
higher software version installed.
Information
With the updated data record for the DME control unit, the maximum engine power is increased by a slight
adjustment to the boost pressure to the factory specification.
This adaptation does not affect the fuel consumption values, emissions or durability of the engine.

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Information
When the DME control unit is programmed, the PDK control unit and the all- wheel drive control unit
are additionally re-programmed automatically. It takes approx. 13 minutes in total to program the
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 Porsche After Sales systems will be started automatically.
Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information). This campaign affects
39,396 vehicles in North America.

Required tools
Tools:

•
•

9900 - PIWIS Tester 3 with PIWIS Tester software version 39.200.010 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. 90 Amp Charger e.g. VAS 5908

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 commencing work, connect a suitable battery charger or power supply, suitable for AGM type
batteries, recommended current rating of 70A fixed voltage 13.5V to 14.5V to the jump-start terminals in
the engine compartment.
NOTICE

Control unit programming will be aborted if the Internet connection is unstable.
•

An unstable Internet connection can interrupt communication between PIWIS Tester and the vehicle
communication module (VCI). As a result, control unit programming may be aborted.



During control unit programming, always connect PIWIS Tester to the vehicle communication module (VCI)
via the USB cable.
NOTICE

Control unit programming will be aborted if the vehicle key is not recognized
•

If the vehicle key is not recognized in vehicles with Porsche Entry & Drive, programming cannot be started
or will be interrupted.

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Switch on the ignition using the original vehicle key. To do this, replace the original vehicle key in the
ignition lock with the plastic key fob if it was previously removed at the start of this procedure.

Work Procedure: 1

Connect a battery charger with a current rating of at least 90 A (e.g. 90 Amp Charger e.g. VAS
5908) to the jump-start terminals in the engine compartment and switch it on.

2

Switch on the ignition using the original driver's key. For vehicles with “Porsche Entry & Drive”,
replace the control panel in the ignition lock with the original driver’s key, if necessary.

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.

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
The procedure described here is based on the PIWIS Tester 3 software version 39.200.010.
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.
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:

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Required PIWIS Tester software version:

39.200.010 (or higher)

Type of control unit programming:

Control unit programming using the 'Automatic
programming' function for the DME control unit.
DME control unit – '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, the PDK control unit
and the all-wheel drive 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

The data record programmed during this
campaign (software part number and
version) for the DME control unit depends
on the relevant vehicle type:

Porsche Macan S:
DME software version: 3687
DME software part number: 95B90653015
Porsche Macan Turbo Performance:
DME software version: 3688
DME software part number: 95B90655003
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.

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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"'.

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Reading out and erasing fault memory
Work Procedure: 1

2

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  Erasing fault memories.
The fault memories of the control units are read out.

3

Once you have read out 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.

Erasing fault memories

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 code 'C10ACF0 - Power steering limit stops not taught' is present in the fault
memory, teach the power steering limit stops.
For relevant instructions, see  Workshop Manual '489025 Power-steering gear: Teaching steering
lock settings'.

Information
If the fault memories of individual control units cannot be erased, proceed as follows:
•

Switch off the 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.

•

Read out the fault memories of these control units again and erase the fault memories separately.

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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

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

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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.

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Once throttle valve adaptation is complete, a tick will
appear in the “Value” field in the PIWIS Tester display.
If throttle valve adaptation is not completed
successfully, the 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.

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

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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 the ignition.

2

Disconnect the PIWIS Tester from the vehicle.

3

Switch off and disconnect the battery charger.

4

On vehicles with Porsche Entry & Drive, replace the original vehicle key in the ignition lock with the
control panel again.

Information
After programming the DME control unit, the vehicle can only be driven in coasting mode again after
approx. 5 overrun phases.
Drive the vehicle in the required overrun phases during the test drive until coasting mode can be
activated again. Coasting mode can be identified by the fact that the engine speed falls to idle speed level
after initiating an overrun phase.
If it is not possible to reactivate coasting mode during the test drive, inform the customer about this.
5

Enter the campaign in the Warranty and Maintenance booklet.

Warranty processing
Scope 1:

Re-program DME control unit
•
•

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Macan S (95B)
Macan Turbo with Performance package (95B)

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Working time:
Re-programming DME control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Re-programming PDK control unit
Re-programming all-wheel drive control unit
Performing backup documentation before and after
programming
Reading out and erasing fault memories
Performing throttle valve adaptation
Performing radiator shutter adaptation

Labor time: 77 TU

 Damage Code WLA0 66 000 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.

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