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Service campaign No. 173-23

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService campaign
NHTSA id11029200
Published by NHTSA2026-03-02
Manufacturer's numberNo. 173-23
Manufacturer's date2026-02-26
Campaign id or software versionWPD8
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Technical information for WPD8 Workshop Campaign – Re-Programming High-Voltage Battery Control Unit

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
PORSCHE CAYENNE2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
PORSCHE PANAMERA 42017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
23V8410002023-12-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
23V0330002023-01-27. ELECTRICAL SYSTEM
19V7350002019-10-16. SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
20191152019-03-06. Electrical
19V1800002019-03-06. ELECTRICAL SYSTEM
19V1150002019-02-20. SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
WTK42026-10-02. Service campaign. Porsche intranet posting with Campaign WTK4 information
No. WTK42026-10-02. Service campaign. Technical Information for Campaign WTK4 – Reset Vehicle Electrical System Battery
No. 103-25-22026-10-02. Service bulletin. Technical Information for Need to Replace Components of the High-Voltage Battery - High-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach
No. 103-25-22026-10-02. Service bulletin. Technical Information for Need to Replace Components of the High-Voltage Battery - High-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach
No. 86-262026-10-02. Service bulletin. Technical Information for Vehicle Color in Front Display/Control Panel Wrong after Replacing Central Computer (PCM)
No. 84-262026-10-02. Service bulletin. Technical Information for Filler Flap on Vehicles with Hybrid Drive System (PHEV) Does Not Close
No. 81-262026-10-02. Service bulletin. Technical Information for Yellow Warning Message “All-Wheel Drive System Malfunction”, “C12BEF6” and “C133700” in the All-Wheel Electronics Control Unit
No. 12-262026-10-02. Service bulletin. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
No. 43-262026-10-02. Warranty extension. Technical Information for Warranty Extension for Front Door Wiring Harness related to Real Top View (RTV) issues
No. 73-262026-09-04. Service bulletin. Symptom-based workshop manual for Vibrating Steering Wheel and Red Warning Message “Electrical System Fault” - Observe Specified Procedure. Note that this bulletin is only applicable to all Macan Electric and Cayenne Electric models. The combustion and hybrid Cayenne and Macan variants are not applicable to this bulletin.