# 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.

- Type: Service campaign
- NHTSA id: 11029200
- Published by NHTSA: 2026\-03\-02
- Manufacturer's number: No. 173\-23
- Manufacturer's date: 2026\-02\-26
- Campaign id or software version: WPD8
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

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

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029200-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029200-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2017 to 2026 PORSCHE CAYENNE
- 2017 to 2024 PORSCHE PANAMERA 4

## Recalls for the same vehicles and component

- [23V841000](/recalls/nhtsa/23V841000.md), 2023-12-13: ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
- [23V033000](/recalls/nhtsa/23V033000.md), 2023-01-27: ELECTRICAL SYSTEM
- [19V735000](/recalls/nhtsa/19V735000.md), 2019-10-16: SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2019115](/recalls/tc/2019115.md), 2019-03-06: Electrical
- [19V180000](/recalls/nhtsa/19V180000.md), 2019-03-06: ELECTRICAL SYSTEM
- [19V115000](/recalls/nhtsa/19V115000.md), 2019-02-20: SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

## Other bulletins for the same vehicles and component

- [WTK4](/bulletins/11037860.md), 2026-10-02, Service campaign: ELECTRICAL SYSTEM. Porsche intranet posting with Campaign WTK4 information
- [No. WTK4](/bulletins/11037858.md), 2026-10-02, Service campaign: ELECTRICAL SYSTEM. Technical Information for Campaign WTK4 – Reset Vehicle Electrical System Battery
- [No. 103\-25\-2](/bulletins/11037838.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; POWER TRAIN. 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\-2](/bulletins/11037837.md), 2026-10-02, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. 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\-26](/bulletins/11037805.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Technical Information for Vehicle Color in Front Display/Control Panel Wrong after Replacing Central Computer \(PCM\)
- [No. 84\-26](/bulletins/11037804.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; STRUCTURE:BODY. Technical Information for Filler Flap on Vehicles with Hybrid Drive System \(PHEV\) Does Not Close
- [No. 81\-26](/bulletins/11037800.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Technical Information for Yellow Warning Message “All\-Wheel Drive System Malfunction”, “C12BEF6” and “C133700” in the All\-Wheel Electronics Control Unit
- [No. 12\-26](/bulletins/11037795.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
- [No. 43\-26](/bulletins/11037785.md), 2026-10-02, Warranty extension: VISIBILITY/WIPER; ELECTRICAL SYSTEM. Technical Information for Warranty Extension for Front Door Wiring Harness related to Real Top View \(RTV\) issues
- [No. 73\-26](/bulletins/11037093.md), 2026-09-04, Service bulletin: STEERING; STRUCTURE:BODY; ELECTRICAL SYSTEM. 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.

JSON: [/v1/bulletins/11029200](/v1/bulletins/11029200)

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