Service

Technical Information

236/22 ENU WNT1

9

WNT1 - Re-Programming Connect Control Unit and Central Computer (PCM) (Cluster 37)
(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:

2022

Model Line:

Cayenne (9YA/9YB)

Concerns:

Connect control unit and central computer (PCM)

Cause:

Optimized software is available for the Connect control unit and central computer (PCM)
control unit.

Measures:

•
•
•

Depending on the booked scope, the Connect control unit and the central computer (PCM) control
unit must be re-programmed with the latest PIWIS Tester software version.
Minimum requirement: Version 41.700.010
Replace Owner's Manual in the on-board folder in the vehicle with an updated version.

Checklist:

For better clarity, a checklist was created as an aid for carrying out the campaign. This does not replace
TI.
The checklist does not have to be attached to the job line in PCSS.
For checklist, see  Technical Information 'Checklist'

Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information).

Required tools
Tools:

•
•
•
•

9900 - PIWIS Tester 3/ 4
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 battery charger 90A
USB storage medium Type A+C 32 GB (for PCM update), Part No. V04014999WW000
USB storage medium, type C (for onboard Owner's Manual update), e.g. Part No.
V04014999WW000

AfterSales

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Service

Technical Information

ENU 236/22

WNT1

Re-programming Connect control unit and central computer (PCM) (Cluster 37)
Work
Procedure:

Information
Before starting programming, particular attention must be paid to the following:
•

The charger must be switched off and on once; the battery charger display must be off before
starting it again, because the battery charger automatically switches to trickle charging after
5 hours (default setting in the charger).

•

Set charge voltage to 14.6 volts.

•

Operate in charging mode.

•

Vehicles with a PVTS contract must be activated for Service mode.

•

The PIWIS Tester must not be charged using the cigarette lighter!

1

The basic procedure for control unit programming is described in the Workshop Manual 
Workshop Manual 'Basic Instructions and Procedure for Control Unit Programming Using the PIWIS
Tester'.

2

Create Vehicle Analysis Log (VAL) using the PIWIS Tester. Mark the vehicle analysis log you have just
created with the attribute “Pre-VAL” and after carrying out the campaign, return it using the PIWIS
Tester.

3

Program Connect control unit.
If Scope 3 is assigned to the vehicle, continue with Step 4.
For specific information on control unit programming during this campaign, see table
below.
Required PIWIS Tester software version:

41.700.010 (or higher)

Type of control unit programming:

Control unit programming using the ‘Automatic
programming’ function of the Connect control
unit.

Programming sequence:

Read and follow the information and
instructions on the PIWIS Tester during the
guided programming sequence.
Do not interrupt programming and coding.
A backup documentation process for the
re-programmed software versions starts as
soon as programming and coding is complete.
25 minutes

Programming time (up to):

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AfterSales

Service

Technical Information

236/22 ENU WNT1

9

Control units programmed in this campaign:

•

Connect control unit

Procedure in the event of error messages
appearing during the programming sequence:

 Workshop Manual '9X00IN Basic instructions

Procedure in the event of a termination in the
control unit programming:

Repeat control unit programming by restarting
programming.

and procedure for control unit programming
using the PIWIS Tester - section on “Fault finding”'

Additional instructions for aborted programming

 Technical Information '9X00IN Additional
information if programming is aborted'
4

Select Guest account from the central display (PCM) and activate Privacy mode (available in some
countries).
Information
If Privacy mode is not active, programming may be aborted, resulting in a defect in the central
computer (PCM). Central computers that are replaced as part of the workshop campaign are
checked by Porsche AG. If private mode was not set in the central computer before starting
programming, the costs will be re-debited.

5

Re-program main computer (PCM).
Information
Intermittently, there is a possibility that the mobile phone will be lost.
If this is the case, the customer must be informed when returning the vehicle.
For specific information on control unit programming during this campaign, see table
below.
Prepare USB stick with the required software (depending on country version).
Overview of the software to be used for the central computer (PCM): See  Technical Information
'9X00IN overview of PCM update'

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Technical Information

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WNT1

Required PIWIS Tester software version:

41.700.010 (or higher)

Type of control unit programming:

In the control unit selection (“Overview” menu)
select the PCM central computer control unit
and select the “Maintenance/repairs” menu.
Select the ‘Install software update’ function
and press •F12“ (‘Next’) to perform the
software update.

Programming code:

E3B5S

Programming sequence:

Read and follow the information and
instructions on the PIWIS Tester during the
guided programming sequence.
Do not interrupt programming and coding.
A backup documentation process for the
re-programmed software versions starts as
soon as programming and coding is complete.

Programming time (up to):

25 minutes

Control unit programmed in this campaign:

•

Procedure in the event of error messages
appearing during the programming sequence:

 Workshop Manual '9X00IN Basic instructions

Procedure in the event of a termination in the
control unit programming:

Repeat control unit programming by restarting
programming.

Control unit for central computer (PCM)

and procedure for control unit programming
using the PIWIS Tester - section on “Fault finding”'

Additional instructions for aborted programming

 Technical Information '9X00IN Additional
information if programming is aborted'

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6

Play electronic Owner's Manual. For more information, see  Workshop Manual '9X00IN Diagnostic
system: Performing vehicle handover' (Install Owner's Manual section)

7

Read out all error memories, process and delete existing errors if necessary.

AfterSales

Service

Technical Information

236/22 ENU WNT1

9

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.
8

Press •F3“ to start the integration test in the control unit selection.
All affected control units should now be successfully re-programmed or checked in the control unit
overview and their status.
Information
If a deviation in the integration test is still indicated despite programming being carried out, this must
be repeated. If the deviation persists, contact Technical Support.

9

Create Vehicle Analysis Log (VAL) using the PIWIS Tester.
Mark the vehicle analysis log you have just created with the attribute “Post-VAL” and after carrying
out the campaign, return it using the PIWIS Tester.

10 Exit the diagnostic application. Switch off ignition. Disconnect the Tester from the vehicle.
11 Set battery charger back to a charge voltage of 14.4 volts.
Information
An excessively high charge voltage can lead to battery defects in other model lines.
12 Replace Owner's Manual in the vehicle.
For an overview of the Owner's Manuals, see:  Technical Information '9X00IN Overview of Order
Numbers for Driver’s Manual'
Information
The vehicle may only be handed over to the customer with the new Owner's Manual.
13 Enter the campaign in the Warranty and Maintenance booklet.

Warranty processing
Scope 1:

Not relevant for this vehicle type.

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WNT1

Scope 2:

Technical Information

ENU 236/22

Labor time:
Re-programming Connect control unit and central computer (PCM)
Includes:
Connecting and disconnecting battery charger
Connect and disconnect PIWIS Tester
Playing electronic Owner's Manual
Reading out and deleting fault memories
Create Vehicle Analysis Logs (VALs) before and after the
campaign

Labor time: 162 TU

Required materials:
WNT10000001

Owner's Manual*

1 piece

WNT10000002

Shipping costs**

1 piece

* The cost of one Owner's Manual will be covered for each vehicle. For warranty invoicing, enter the
Part No. WNT10000001 with the designation “Owner's Manual” as accessories costing $ 0.01.
** If you incur shipping costs when ordering the Owner's Manual, please invoice these costs under
the Part No. WNT10000002, with the designation “Shipping costs” as an additional part. Maximum
cost $ 5.25. Please document a copy of the invoice for this in the warranty claim.
 Damage code WNT1 066 000 1

Scope 3:

Labor time:
Re-programming main computer (PCM)
Includes:
Connecting and disconnecting battery charger
Connect and disconnect PIWIS Tester
Playing electronic Owner's Manual
Reading out and deleting fault memories
Create Vehicle Analysis Logs (VALs) before and after the
campaign

Labor time: 122 TU

Required materials:
WNT10000001

Owner's Manual*

1 piece

WNT10000002

Shipping costs**

1 piece

* The cost of one Owner's Manual will be covered for each vehicle. For warranty invoicing, enter the
Part No. WNT10000001 with the designation “Owner's Manual” as accessories costing $ 0.01.