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Service bulletins for the 2020 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.

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

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
No. 126-202023-03-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC. Technical information for a complaint - error message "engine control system fault" when brake pedal is pressed slightly. Vehicle still moves normally.
No. 31-202023-02-06. Service bulletin. ELECTRICAL SYSTEM. Technical information for a diagnosis and handling of the 12 volt battery (on-board battery)
No. 2231.12023-02-06. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information involving the mobile charger connect (PMCC) for software bugs and loss of power setting
No. 2229.52023-01-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Instructions on advanced technical information for the Cayenne and 911. An update to the conbox current draw discharges 12v battery.
No. 159-21-12023-01-10. Service bulletin. ELECTRICAL SYSTEM. Information on technical information for a complaint involving the Cayenne, Cayman, Boxster, Macan, and 911. The SD map update/OTA map update does not function
No. 22342023-01-10. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for improper odometer and speedometer function
WMP22022-12-07. Service bulletin. ELECTRICAL SYSTEM. Porsche intranet posting with information on WMP2 workshop campaign - rework charging electronics
No. 22312022-12-07. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Porsche Mobile Charger Connect (PMCC)
No. 2229.42022-12-07. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Instructions on advanced technical information for the conbox current draw discharges 12v battery - for the Cayenne and 911.
No. 197-212022-12-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE. Information on reworking charging electronics - WMP2.
No. 2229.32022-12-06. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the conbox current draw discharges 12v battery.
No. 2229.22022-11-04. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Cayenne and 911 - current draw discharges 12v battery
No. 2229.12022-11-04. Service bulletin. ELECTRICAL SYSTEM. Advanced technical information for the Cayenne and 911 - current draw discharges 12V battery
No. 155-222022-11-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Technical information on WMP4 - affixing label on the infrastructure charging cable.
No. 167-222022-11-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Technical information on WNM6 - affixing label on the infrastructure charging cable.
No. 2011.12022-11-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Information for recommended HV battery - fire blanket on the Panamera, Cayenne, and Taycan
No. 30-222022-10-05. Service bulletin. ELECTRICAL SYSTEM. Technical information on WMJ9 – Re-Programming Gateway Control Unit
No. 22292022-10-05. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Cayenne and 911 - conbox current draw discharges 12v battery
No. 193-222022-10-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Technical information for check engine warning light active/fault memory entry (P26B100/00CB24) in the TME
No. 197-21-12022-10-05. Service bulletin. ELECTRICAL SYSTEM. Technical information for WMP2 - reworking charging electronics
No. 197-21-2)2022-10-04. Service bulletin. ELECTRICAL SYSTEM. Technical information for WMP2 reworking charging electronics.
No. 197-21-12022-09-08. Service bulletin. ELECTRICAL SYSTEM. Technical information for WMP2 - reworking charging electronics.
No. 22262022-09-08. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Macan, Cayenne, and 911. restarts unexpectedly.
No. 22242022-09-08. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Instructions on advanced technical information for the Cayenne and 911 - inno-drive does not function.
No. 197-21-22022-09-08. Service bulletin. ELECTRICAL SYSTEM. Technical information on WMP2 - reworking charging electronics.

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