WPN9 Service Bulletin/Repair Instructions

WPN9 Workshop Campaign Reprogramming central computer (PCM)
WPN9 Workshop Campaign - Reprogramming central

computer (PCM)

ID Number
WPN9
Models
Taycan (Y1A / Y1B / Y1C)
Model Years
2020 - 2024
VIN List
Attached
Number of VINs affected
28,428
Issue Description
Optimized software is available for the central computer (PCM) control unit and Connect control unit.

The software for the central computer (PCM) control

unit must therefore be updated on the affected vehicles.
What should Porsche Centers do?
Please arrange for this measure to be carried out as

soon as possible on affected vehicles.

As of the time of this posting (11/3/23) the remedy

is now available.
TI Number
No. 160-23
Required software

PIWIS Tester 4 test software release
42.300.030 (or higher)
Required tools

Designation
Part No./Specification/Special instructions
Battery charger
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.
PIWIS Tester 4
-
Blank USB storage medium Type A+C 32 GB (for

PCM update)
V04014999WW000
1
WPN9 Workshop Campaign - Reprogramming central computer (PCM)
* The PCM control unit software update is performed using a USB storage medium. The software release

that is specific to each region must be downloaded using the software tool PiUS (Porsche integrated Update

Service) and must be installed on a blank USB storage medium.

Pay particular attention to the following:

• For this PCM software update, the USB storage medium USB Type A+C 32 GB with the part number

V04014999WW000 must be used.

• To use the software tool, one blank or re-writable USB storage medium is required for each individual

software.

• The software available in PiUS must only be used in accordance with the instructions provided in a

Technical Information published for this purpose.
Scope 2:

Part No.*
9Y2909000R
Designation

- Region

PCM software update

- North America

- Mexico
Vehicle allocation
I-No. ER3 / ER4
Warranty processing

Scope definition

Scope 1: Over-the-Air (OTA) software update via PCM - no invoicing possible at this time.

Scope 2: Re-programming central computer (PCM) control unit via PIWIS Tester - Vehicles without OTA

activation.

Damage Number
WPN9 66 000
Repair Code
1
Labor time
73 TU
The campaign that was carried out does not need to be entered in the Warranty and Maintenance logbook for

this campaign.
Attachments

1. VIN_List_Report_WPN9_2023-11-03_V2.xlsx
2

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