No. 92-22

Service
Technical Information
92/22
ENU
9086
9
Replacement Requirement for Head-Up Display: Subsequent Update After Replacing
Head-Up Display Hardware (92/22)
Model Line:
Cayenne (9YA)
Model Year:
2019
Equipment:
Head-up display (M-no. KS1)
Concerns:
Head-up display (HUD) control unit
Information:
On model year “K” (2019) vehicles, malfunctions can occur between the head-up display and PCM central
computer after replacing the head-up display hardware.
Action required: After replacing the hardware, check the software configuration of the head-up display and PCM central
computer. In the event of discrepancies, re-program the control unit for head-up display using the PIWIS
Tester with PIWIS Tester software version 41.100.010 (or higher) installed and the corresponding
programming code.
Information
The total time required for control unit programming is approx. 2 minutes.
Software:
Overview of the software versions affected
Control unit
Software version (old status)
Software version (new status)
Head-up display
1828
1846
Required tools
Tool:
Information
The Cayenne is equipped as standard with a lithium starter battery, which must only be charged using
suitable battery chargers.
For further information about the battery chargers to be used, see the corresponding Workshop
Manual.  Workshop Manual '2706IN Load general information on the 12-volt lithium-ion battery' and 
Workshop Manual '270689 battery, vehicle electrical system'
•
•
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90A.
9900 - PIWIS Tester 3 with PIWIS Tester software version 41.100.010 (or higher) installed
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Technical Information
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Preliminary work
NOTICE
Fault entry in the fault memory and control unit programming aborted due to undervoltage.
•
Increased current draw during diagnostics 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 getting started, connect a suitable battery charger with a current rating of at least 90 A to the
jump-start terminals.
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 and the vehicle communication module (VCI). As a result, programming may be aborted.

During control unit programming, always connect the PIWIS Tester to the vehicle communication module
(VCI) using 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 in front of the lock opening for the center console cover to
guarantee a permanent radio link between the vehicle and driver's key.
Work Procedure: 1
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”'.
Checking software configuration and re-programming the head-up display control unit, if necessary
Work Procedure: 1
2
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Check software version of the PCM central computer:
1.1
Select ‘Central computer’ control unit.
1.2
Select the ‘Extended identifications’ menu.
1.3
Check software version of the ‘Central computer’.
1.3.1
If the software version is lower than ‘2870’, no further action is required. Continue
with  Technical Information '9X00IN Concluding work'.
1.3.2
If the software version is greater than or equal to ‘2870’, continue with Step  2.
Check software version of the head-up display control unit and re-program control unit for head-up
display where necessary:
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Technical Information
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2.1
Select ‘Head-up display’ control unit.
2.2
Select the ‘Extended identifications’ menu.
2.3
Check software version of control unit for ‘head-up display’.
ENU
9086
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Information
Only the software version from '1846' is compatible with the software version '2870' /
'2872' of the PCM central computer.
2.3.1
If the software version is ‘1846’, no further action is required. Continue with 
Technical Information '9X00IN Concluding work'.
2.3.2
If the software version is ‘1828’, re-program the head-up display 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”'.
Information
The procedure described here is based on the PIWIS Tester 3 software version
41.100.010.
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.
Specific information on control unit programming in the context of this
technical information:
Required PIWIS Tester software
version:
41.100.010 (or higher)
Type of control unit programming:
Control unit programming using the
‘Campaign’ function in the Additional
menu on the PIWIS Tester by entering a
programming code.
Programming code:
S3H5B
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Programming sequence:
Read and follow the information and
instructions on the PIWIS Tester during
the guided programming sequence.
During the programming sequence, the
control unit for the head-up display is
re-programmed and then automatically
re-coded.
Do not interrupt programming and
coding.
Backup documentation of the new
software versions is then performed.
Programming time (approx):
2 minutes
Software version programmed
during programming:
1846
Following control unit programming, the
software version can be selected from the
relevant control unit in the  ‘Extended
identifications’ menu using the PIWIS
Tester.
The software version information in the
programmed data record is based on the
specified PIWIS Tester software version.
Please note that this may be different in a
higher version.
Procedure in the event of a
termination in the control unit
programming:
•
•
•
Procedure in the event of error
messages appearing during the
programming sequence:
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Switch ignition off and then switch on
again.
Selecting and erasing fault memories.
 Workshop Manual '9X00IN Basic
instructions and procedure for control
unit programming using the PIWIS
Tester - section on "Rework"'
Repeat control unit programming by
restarting programming.
 Workshop Manual '9X00IN Basic
instructions and procedure for control
unit programming using the PIWIS Tester section on “Troubleshooting”'.
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Concluding work
Work Procedure: 1
Carry out general rework for control unit programming as described in  Workshop Manual '9X00IN
Basic instructions and procedure for control unit programming using the PIWIS Tester - section on
“Rework”'.
Invoicing
For documentation and invoicing in a warranty case, state the work items required depending on the
scope of work required and the specified PCSS encryption in the warranty claim:
APOS
Labor operation
91520103
Checking central computer
90860103
Checking windshield projection control unit
90862553
Programming windshield projection control unit
I No.
PCSS encryption:
Location (FES5)
90860
windshield projection control unit
Damage type (SA4)
1614
function not according to specification
References:
 Workshop Manual '270689 Battery, charging vehicle electrical system battery'
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming'
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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