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Service bulletin No. 2606

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 id11037062
Published by NHTSA2026-09-04
Manufacturer's numberNo. 2606
Manufacturer's date2026-08-05
NHTSA componentFORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; ENGINE; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; VEHICLE SPEED CONTROL

NHTSA's summary

Information on Advanced Technical Information for E3II V8 Cayenne – Various Assistance System Warning Messages in the Instrument Cluster due to Implausible Drivetrain Coordinator Status

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

Driver assistance, Engine, Throttle and cruise control, Adaptive cruise control

Vehicles listed
PORSCHE CAYENNE GTS2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GTS COUPE2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S COUPE2024, 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. 2606-12026-09-04. Service bulletin. Information on Advanced Technical Information for E3II V8 Cayenne – Various Assistance System Warning Messages in the Instrument Cluster due to Implausible Drivetrain Coordinator Status
No. 11-25-42026-09-04. Service bulletin. Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit
2121.42026-08-05. Service bulletin. ACC Dynamic Calibration Fault C110300
No. 11-252026-01-06. Service bulletin. Technical information for Various Error Messages Regarding Driver Assistance Systems in the Instrument Cluster in Conjunction With Passive Fault Memory Entries in the Driver Assistance Systems Control Unit - ZFAS
No. 75-25-12025-12-05. Service bulletin. Technical information for Various White Messages Regarding Driver Assistance Systems In the Instrument Cluster/Fault Memory Entry "C12D5FA" In the Control Unit for Driver Assistance Systems
No. 2503.32025-12-05. Service bulletin. Instructions on advanced technical information for Troubleshooting Advanced Driver Assistance Systems (ADAS)
No. 2503.22025-08-06. Service bulletin. Instructions on advanced technical information for troubleshooting ADAs systems
No. 2121.32025-08-04. Service bulletin. Instructions on advanced technical information for the Cayenne - ACC Dynamic Calibration Fault C110300
No. 2503.12025-07-09. Service bulletin. Instructions on advanced technical information for the advanced driver assistance systems. Please refer to PDF attached for more information regarding this.