No. 208-20

Service
Technical Information
208/20 ENU
9152
9
Complaint - Over the Air (OTA) Software Update for the Central Computer (PCM) Failed:
Observe Specified Procedure (208/20)
Model Line:
Cayenne (9YA/9YB)
Model Year:
As of 2021
Concerns:
Porsche Communication Management (PCM) central computer
Information:
The over the air (OTA) software update for the central computer has failed and an error message appears
in the central display of Porsche Communication Management (PCM).
Information
Please also pass the information about the procedure 'Perform software update in Update Center' on to
your sales staff in order to inform the customer about this if necessary.
Action required: Perform the relevant remedial action as described in the error message:
Error message
Remedial action
'The online software update could not be
performed. The vehicle condition is unchanged.'
Perform software update again in the Update
Center  Technical Information 'Performing
software update in the Update Centre'.
'The online software update could not be
performed. This may cause function restrictions.'
Perform software update using the PIWIS Tester
 Technical Information 'Performing software
update with the PIWIS Tester'.
'Update failed. An attempt will be made to
perform the update again at a later time.'
Perform software update in the Update Center
as soon as it is available. Wait as short a time
as possible until the installation of the available
update  Technical Information 'Perform
software update in the Update Centre'.
Model Line:
Macan (95B)
Concerns:
Porsche Communication Management (PCM) central computer
Information:
The over the air (OTA) software update for the central computer has failed and an error message appears
in the central display of Porsche Communication Management (PCM).
Information
Please also pass the information about the procedure 'Perform software update in Update Center' on to
your sales staff in order to inform the customer about this if necessary.
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Action required: Perform the relevant remedial action as described in the error message:
Error message
Remedial action
'The online software update could not be
performed. The vehicle condition is unchanged.'
Perform software update again in the Update
Center  Technical Information 'Performing
software update in the Update Centre'.
'The online software update could not be
performed. This may cause function restrictions.'
 Technical Information 'Performing software
'Update failed. An attempt will be made to
perform the update again at a later time.'
Perform software update in the Update Center
as soon as it is available. Wait as short a time
as possible until the installation of the available
update  Technical Information 'Perform
software update in the Update Centre'.
Perform software update using the PIWIS Tester
update with the PIWIS Tester'.
Model Line:
Panamera (971)
Concerns:
Porsche Communication Management (PCM) central computer
Information:
The over the air (OTA) software update for the central computer has failed and an error message appears
in the central display of Porsche Communication Management (PCM).
Information
Please also pass the information about the procedure 'Perform software update in Update Center' on to
your sales staff in order to inform the customer about this if necessary.
Action required: Perform the relevant remedial action as described in the error message:
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Error message
Remedial action
'The online software update could not be
performed. The vehicle condition is unchanged.'
Perform software update again in the Update
Center  Technical Information 'Performing
software update in the Update Centre'.
'The online software update could not be
performed. This may cause function restrictions.'
 Technical Information 'Performing software
'Update failed. An attempt will be made to
perform the update again at a later time.'
Perform software update in the Update Center
as soon as it is available. Wait as short a time
as possible until the installation of the available
update  Technical Information 'Perform
software update in the Update Centre'.
Perform software update using the PIWIS Tester
update with the PIWIS Tester'.
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Technical Information
208/20 ENU
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Model Line:
911 (992)
Concerns:
Porsche Communication Management (PCM) central computer
Information:
The over the air (OTA) software update for the central computer has failed and an error message appears
in the central display of Porsche Communication Management (PCM).
Information
Please also pass the information about the procedure 'Perform software update in Update Center' on to
your sales staff in order to inform the customer about this if necessary.
Action required: Perform the relevant remedial action as described in the error message:
Error message
Remedial action
'The online software update could not be
performed. The vehicle condition is unchanged.'
Perform software update again in the Update
Center  Technical Information 'Performing
software update in the Update Centre'.
'The online software update could not be
performed. This may cause function restrictions.'
 Technical Information 'Performing software
'Update failed. An attempt will be made to
perform the update again at a later time.'
Perform software update in the Update Center
as soon as it is available. Wait as short a time
as possible until the installation of the available
update  Technical Information 'Perform
software update in the Update Centre'.
Perform software update using the PIWIS Tester
update with the PIWIS Tester'.
Performing a software update in the Update Center
Information
The following prerequisites must be met for a software update:
•
Porsche ID active
•
Online software update service activated in MyPorsche
•
Privacy mode deactivated in the vehicle (flight mode)
•
Privacy mode service-specifically deactivated (flight mode)
•
All electrical loads (e.g. parking pre-climatization) switched off
•
Low-voltage battery is charged
•
only for hybrid vehicles High-voltage battery is not being charged
•
only for hybrid vehicles Vehicle plug removed from vehicle charge port
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Work Procedure: 1
Technical Information
208/20
Switch off ignition.
2
Switch on ignition. The software update is now available for download again.
3
Select the 'Start update' button  Starting update -1- in the Update Center.
Starting update
4
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The text 'Download active' appears and the download status  Download status -1- is indicated by a
progress bar.
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Download status
5
After the download is complete, switch off the ignition.
6
 Start installation -1- Start installation by clicking the 'Yes' button.
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Start installation
7
Get out and lock the vehicle.
8
Keep the driver's key outside of the transmitter range.
Required tools - 911 (992)
Information
The new 911 (992) is equipped with either a lithium starter battery (I-no. J2A) or an AGM starter
battery (I-no. J0V, J4K) as standard.
This depends on the following:
•
Country version
•
Model type
•
Vehicle equipment
Lithium starter batteries must only be charged using a suitable battery charger that has a current
and voltage-controlled charge map.
For further information about the battery chargers to be used, see  Workshop Manual '270689
Charging battery/vehicle electrical system'.
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Service
Technical Information
•
•
208/20 ENU
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9
9900 - PIWIS Tester 3 with current PIWIS Tester test software version.
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 90 A battery
charger
Required tools - Macan (95B), Panamera (971), Cayenne (9YA/ 9YB)
Tool:
•
•
9900 - PIWIS Tester 3 with current PIWIS Tester test software version.
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90A.
Preparatory work - Cayenne (9YA/ 9YB)
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 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 into the front left storage compartment in the center
console to ensure a continuous radio link between the vehicle and the driver's key.
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Work Procedure: 1
Place the driver's key with the back facing down
into the front left storage compartment in the center
console (emergency start tray) to guarantee a
continuous radio link between the vehicle and the
driver's key  Emergency start tray.
2
Carry out general preliminary work for control unit
programming as described in  Workshop Manual
'9X00IN Basic instructions and procedure for control
unit programming - section on "Preliminary work"'.
Emergency start tray
Preparatory work - Macan (95B)
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 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.
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Service
Technical Information
Work Procedure: 1
208/20 ENU
9152
9
Switch on the ignition using the original driver’s key.
For vehicles with 'Porsche Entry & Drive', do this by replacing the component in the ignition lock with
the original vehicle key if necessary.
2
Carry out general preliminary work for control unit programming as described in  Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming - section on
"Preliminary work"'.
Preparatory work - Panamera (971)
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 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 into the front left storage compartment in the center
console to ensure a continuous radio link between the vehicle and the driver's key.
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Work Procedure: 1
Place the driver's key with the back facing down
into the front left storage compartment in the center
console (emergency start tray) to guarantee a
continuous radio link between the vehicle and the
driver's key  Emergency start tray.
2
Carry out general preliminary work for control unit
programming as described in  Workshop Manual
'9X00IN Basic instructions and procedure for control
unit programming - section on "Preliminary work"'.
Emergency start tray
Preparatory work - 911 (992)
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 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 front of the lock opening for the center console cover to
guarantee a permanent wireless link between the vehicle and driver's key.
Work Procedure: 1
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Place the driver's key with the back facing down in front of the lock opening for the center console
cover (emergency start tray) to guarantee a permanent wireless link between the vehicle and driver's
key  Emergency start tray.
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Technical Information
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Emergency start tray
2
Carry out general preliminary work for control unit programming as described in  Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming - section on
"Preliminary work"'.
Re-programming central computer
NOTICE
Using an older version of the PIWIS Tester test software
•
Measure is ineffective

Always use the current version of the PIWIS Tester test software for control unit programming and coding.
Work
Procedure:
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.
1
Search for the relevant OTA campaign number  OTA campaign number and Additional Information
button -1- for the control unit in PCSS (Porsche Central Service System) and select the Additional
Information button  OTA campaign number and Additional Information button -2-.
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OTA campaign number and Additional Information button
2
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Note the programming code  Programming code and PIWIS Tester software version -1- and
observe the required PIWIS Tester software version  Programming code and PIWIS Tester
software version -2-.
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Programming code and PIWIS Tester software version
3
Re-program the central computer, see  Workshop Manual '915225 Programming central
computer data update'.
4
Re-code the central computer in the PIWIS Tester.
4.1
Select 'Coding/programming' in the menu.
4.2
Select ‘Automatic coding’ and press •F12“ to continue.
4.3
Follow the instructions on the Tester.
Information
If the central computer cannot be controlled or re-programmed using the PIWIS Tester after two attempts,
see  Workshop Manual '915255 Replacing central computer'.
Parts required if necessary - Panamera (971), Cayenne (9YA/9YB)
Parts Info:
Part No.
Designation
Number
9Y1035*** 1)
 Central computer
1 ea.
1) current part number available in PET2
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Parts required if necessary - Macan (95B)
Parts Info:
Part No.
Designation
Number
95B035*** 1)
 Central computer
1 ea.
1) current part number available in PET2
Parts required if necessary - 911 (992)
Parts Info:
Part No.
992035***1)
9A700748300
Designation
– Location
 Central computer
Number
1 ea.
 External hexalobular screw
– Front seat
8 ea.
1) current part number available in PET2
Invoicing
Invoicing:
Information
Please calculate the costs for the additional effort using a separate warranty claim in accordance with
PAG specifications. Also specify the campaign number under Comment.
Then get in touch with your contact person at Technical Support using a PRMS ticket so that the
campaign can be closed on this vehicle.
To guarantee fast and efficient processing, the PRMS ticket must contain the following information:
References:
•
Vehicle identification number
•
Campaign number
 Workshop Manual '915255 Replacing central computer'
 Workshop Manual '915225 Programming central computer data update'
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'
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.
© 2022 Porsche Cars North America, Inc.
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