No. 188-20

Service
Technical Information
188/20 ENU
WLK6
9
WLK6 - Porsche Communication Management (PCM) Software Update (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 Line:
Macan (95B)
Model Year:
2021
Country/Market:
USA (C02)
Concerns:
Porsche Communication Management (PCM)
Information:
Optimized software is available for the Porsche Communication Management (PCM) system.
Action
Required:
Update PCM software using an SD card and the PIWIS Tester procedure.
Affected
Vehicles:
Only for vehicles assigned to the campaign (see also PIWIS Vehicle Information). This campaign affects
6,429 vehicles.
Required tools
Tools:
•
Battery charger with a current rating of at least 90 A and, if required, also with a current and
voltage-controlled charge map for lithium starter batteries, e.g. VAS 5908 battery charger
90A
•
9900 - PIWIS Tester 3 with PIWIS Tester software version 39.900.015 (or higher) installed
•
SD memory cards for PCM update
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Information
From now on, you can even create SD cards yourself.
To do this, download the software using the SD card tool PiUS (Porsche integrated Update Service) and
install it on a blank SD card.
Pay particular attention to the following:
•
The part number 95B919360E displayed in PiUS must be used for this PCM software update.
•
For using the software tool, one blank or re-writable SD card is required for each software.
•
The software available in PiUS must only be used in accordance with the instructions provided in a
Technical Information published for this purpose.
The software (SD card) mentioned here must only be used on the vehicles assigned to the campaign.
Damage to the control unit cannot be ruled out if the SD cards are used on other vehicles.
You will find further information on how to install and use the PiUS software tool in the PPN portal under
"PiUS (Porsche integrated Update Service) goes live".
Information
The PCM update is performed using the specific SD memory card.
The SD memory card for the PCM update must be re-used as part of the workshop equipment
and remains at the Porsche dealer. The SD memory card must not therefore be left in the vehicle or
handed over to the customer.
Overview of PiUS software version – PCM update
Part No.
Designation
– Region
95B919360E
Software for PCM update
– USA
Preparatory work
NOTICE
Fault entry in the fault memory and control unit programming aborted due to undervoltage.
•
Increased power consumption during diagnosis can cause a drop in voltage, which can result in one or
more fault entries and abortion of the diagnostic process.

Before starting control unit diagnosis, connect a suitable battery charger with a current rating of at least
90 A to the vehicle.
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Technical Information
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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 diagnosis may be aborted.

During control unit diagnosis, 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 the vehicle, programming cannot be started or will be interrupted.

Place the driver's key with the back facing down in the area in front of the storage compartment under
the armrest (emergency start tray) in order to guarantee a permanent radio link between the vehicle and
driver's key.
Information
The procedure described here is based on the PIWIS Tester 3 software version 39.900.015.
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.
Procedure:
1
Connect a suitable battery charger, e.g. Battery charger 90A, to the jump-start terminals in the
luggage compartment and switch it on.
2
Place the driver's key with the back facing down in the
area in front of the storage compartment under the
armrest (emergency start tray) in order to guarantee
a permanent radio link between the vehicle and
driver's key  Emergency start tray.
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.
Emergency start tray
4
Switch on ignition.
5
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.
6
Read out the fault memory of the PCM and delete it if necessary.
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Performing PCM software update
NOTICE
Using the SD cards on vehicles that are not assigned to this campaign
•
Risk of damage to control unit

Use the specified SD cards only for the vehicles assigned to the campaign.
Work Procedure: 1
Insert SD card for the PCM update into the SD card slot.
Part No.
Designation
95B919360E
SD memory card for PCM update
Information
If the software update is interrupted or if error messages are displayed (e.g. as a result of read errors),
the update must be repeated.
2
Start the PCM software update using the PIWIS Tester.
2.1
Select the PCM control unit in the control unit selection screen ('Overview' menu) and press
•F12“ ('Next') to confirm your selection.
2.2
Once the PCM control unit has been found and is displayed in the 'Overview', select the
'Maintenance/repairs' menu.
Installing PCM software update
2.3
Select the 'Install software update' function and press •F12“ ('Next') to perform the
software update  Installing PCM software update.
2.4
Confirm the information that is displayed by pressing •F12“ ('Next').
2.5
After meeting the preconditions, confirm by ticking the 'Status' column. Then, press •F12“
('Next') to continue.
Entering PCM programming code
2.6
Enter the programming code M5S6Z in the relevant column  Entering PCM programming
code and press •F12“ ('Next') to confirm  Entering PCM programming code.
2.7
Press •F8“ ('Start') to start.
2.8
After checking the software data, press •F8“ ('Start') to start programming.
The time required for the update depends on the respective vehicle equipment and
can be up to 40 minutes.
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The PCM is restarted several times during the update.
2.9
•
Once the update is complete, an overview is displayed showing processes that have been
completed successfully marked with a tick in the Status box. Press •F12“ ('Next') to
confirm.
Software version programmed during this campaign: 2841
Following control unit programming, the software version can be read out of the PCM control unit in the
'Extended identifications' menu using the PIWIS Tester.
3
Remove inserted SD card from the SD card slot.
Concluding work
Work Procedure: 1
Read out and erase the fault memories of all control units.
1.1
Press •F7“ in the control unit selection screen ('Overview' menu) to call up the Additional
menu.
1.2
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.
1.3
Once you have read out the fault memories,
check the fault memory entries.
Erasing 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.
1.4
Press •F8“ to delete fault memory entries.
1.5
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.
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Information
If fault memory entries for individual control units cannot be deleted, proceed as follows:
1.6
2
•
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.
•
Start the engine, leave it running for a short time and then stop it again.
•
Switch off the ignition and wait approx. 10 seconds before switching it back on again.
•
Plug the PIWIS Tester diagnostic connector into the diagnostic socket again and restore
communication with the vehicle.
•
Read out the fault memory again and delete any fault memory entries that are stored.
Once you have erased the fault memories,
select the 'Overview' menu to return to the
control unit selection screen  Control unit
selection.
Switch off ignition.
Information
Connect the PIWIS Tester to a network as soon as
you can and log into the PPN in order to transfer the
backup documentation created during this campaign
to the PAG systems.
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3
Disconnect the PIWIS Tester from the vehicle.
4
Switch off and disconnect the battery charger.
5
Enter the campaign in the Warranty and Maintenance booklet.
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Control unit selection
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Technical Information
188/20 ENU
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Warranty processing
Scope 1:
Scope 2:
Currently not applicable.
Working time:
Performing PCM software update
Labor time: 52 TU
 Damage Code WLK6 66 000 1
Scope 3:
Vehicles that have not yet been delivered, on which the campaign was not carried out during the
sales check.
Working time:
Performing PCM software update
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Labor time: 62 TU
 Damage Code WLK6 066 000 1
Scope 4:
Vehicles that have already been delivered.
Working time:
Performing PCM software update
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
Labor time: 78 TU
 Damage Code WLK6 066 000 1
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Overview of new features of the PCM update
Overview:
Function
Description
Porsche Communication Management (PCM)
•
•
•
•
•
Easier programming of the garage door
opener
Easier destination input via keyword search
Optimized display and use of the
voice assistant and voice recognition
(online/offline)
Improved activation of WiFi hotspot
Correction of automatic daylight saving time
changeover
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 21, 2020
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