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Service bulletins for the 2021 Porsche Cayenne

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.

829 on file from NHTSA, as of 2026-10-19.

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By trouble code

Only bulletins with component: Driver assistance are shown. Show all

Bulletins, newest first
No. 11-25-42026-09-04. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. Technical Information for White Messages Regarding Driver Assistance Systems in Conjunction with Passive Fault Memory Entries in the ZFAS Control Unit
ASB22026-08-05. Service campaign. ELECTRICAL SYSTEM; BACK OVER PREVENTION: WARNINGS. Re-Programming Assistance System Control Unit (Stop Delivery/Recall Campaign)
2121.42026-08-05. Service bulletin. VEHICLE SPEED CONTROL; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. ACC Dynamic Calibration Fault C110300
03/26 91022026-07-07. Service bulletin. BACK OVER PREVENTION: WARNINGS; ELECTRICAL SYSTEM. Complaint Regarding the Camera View (Real Top View) in the PCM Central Display (03/26)
No. 11-252026-01-06. Service bulletin. FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; FORWARD COLLISION AVOIDANCE: WARNINGS. 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. 2121.32025-08-04. Service bulletin. FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. Instructions on advanced technical information for the Cayenne - ACC Dynamic Calibration Fault C110300
No. 11-252025-04-07. Service bulletin. LANE DEPARTURE: WARNING; ELECTRICAL SYSTEM; LANE DEPARTURE: ASSIST. Technical Information - Various Error Messages regarding Driver Assistance Systems in the Instrument Cluster / Passive Fault Memory Entry "C12D5FA" in the Driver Assistance System Control Unit (ZFAS) (11/25)
No. 2121.22024-08-06. Service bulletin. FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; ELECTRICAL SYSTEM. Instructions on advanced technical information for the Cayenne - dynamic calibration fault C110300
No. 89-232023-10-05. Service bulletin. ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). Technical information for WPH4 - recoding control unit for assistance systems
No. 15-202023-09-09. Service bulletin. LANE DEPARTURE: SENSING SYSTEM: CAMERA; FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA; VISIBILITY. Installation and conversion instructions for the Cayenne
PIWIS2301ar2023-08-03. Service bulletin. BACK OVER PREVENTION:SOFTWARE. Information for PIWIS tester updates 42.000.050 & .051
PIWIS2301aq2023-08-03. Service bulletin. BACK OVER PREVENTION:SOFTWARE. Information for PIWIS tester update 42.000.048
No. 143-182023-04-06. Service bulletin. BACK OVER PREVENTION; VISIBILITY. Symptom-based workshop manual for One or More Camera Views in the Central Display of the PCM are Black - Possible Water Intrusion
No. 205-212023-02-06. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE. Technical information for a Message "Lane Change Assist Not Available – Service Necessary" in the instrument cluster: re-programming control units for lane change assist and, if applicable, radar sensor for front corner radar
No. 145-212022-02-04. Service bulletin. ELECTRICAL SYSTEM; WHEELS; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). Technical information on WMK8 - replacing wheel electronics for the tire pressure monitoring system (TPMS)
No. 2108.12021-11-04. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE. Instructions on advanced technical information for lane change assist warning.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.