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Service bulletin No. 21-25

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 bulletin
NHTSA id11028552
Published by NHTSA2026-02-06
Manufacturer's numberNo. 21-25
Manufacturer's date2026-01-16
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Technical information for Vehicle not ready, Red Warning Message "HV Vehicle Electrical System: Malfunction!” and Fault Memory Entries regarding Pulse Inverter

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 MACAN 4 ELECTRIC2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN 4S ELECTRIC2025 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN ELECTRIC2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN TURBO ELECTRIC2024, 2025, 2026 (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.

Other bulletins for the same vehicles and component
No. 93-262026-10-02. Service bulletin. Symptom-based workshop manual for False Warning from Lane Change Assist (LCA) - Warning Light in Exterior Mirror Flashes Without Reason
No. 118-252026-10-02. Service bulletin. Technical Information for Rear Lid Opens/Does Not Close - Replacing Closing Aid Motor for Rear Lid
No. 12-262026-10-02. Service bulletin. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
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.
WTH12026-09-04. Over-the-air update. Porsche intranet post for Campaign WTH1 Over-the-Air (OTA) Update - Reprogramming high-voltage central box (JX6)
No. 2433-42026-09-04. Service bulletin. Information on Advanced Technical Information for Porsche Mobile Charger NEMA Supply Cable Initialization Failure
No. 2315-12026-09-04. Service bulletin. Information on Advanced Technical Information for Porsche Mobile Charger Plus (PMC+) Red LEDs and Fault B191E49
No. 71-262026-09-04. Service bulletin. Technical Information for The Second Hand of the Sport Chrono Clock (Stopwatch) Runs Unevenly or Jumps Anti-Clockwise
No. 34-26-12026-09-04. Service bulletin. Technical Information for Windshield Water Ingress in the Area of the Front Overhead Console
33/26 Update 22026-08-06. Service bulletin. AC Charging Process in the Customer’s Home Network Not Working (33/26)