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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. 2229.12023-12-08. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information on the Cayenne and 911 conbox current draw discharges 12v battery
No. 2221.32023-12-08. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Cayenne E-Hybrid - thermal management fault (P26B100)
No. 177-232023-12-07. Service bulletin. ELECTRICAL SYSTEM. Technical information for WPR0 - recoding thermal management control unit
No. 23302023-11-08. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the permanent diagnostic trouble codes
No. 180-212023-11-08. Service bulletin. ELECTRICAL SYSTEM. Technical information on WMM7 - replacing VTS control unit
No. 23142023-10-05. Service bulletin. ELECTRICAL SYSTEM. Special tools and equipment information for all Porsche models. Diagnostic equipment standards.
No. 23132023-10-05. Service bulletin. ELECTRICAL SYSTEM. Special tools and equipment information for the Pico Oscilloscope Extended Functionality
No. 2229.92023-09-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. Information on advanced technical information for the Cayenne and 911 - conbox current draw discharges 12v battery
No. 2117.12023-09-09. Service bulletin. ELECTRICAL SYSTEM; COMMUNICATION:MANUFACTURER TELEMATICS. Information on advanced technical information for the connect registration and pairing PDI tips.
No. 23182023-09-09. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Information on advanced technical information for the wall charger connect - ground fault troubleshooting
No. 31-202023-09-08. Service bulletin. ELECTRICAL SYSTEM. Technical information for diagnosis and handling of the 12 volt lithium-ion battery
No. 2224.22023-08-03. Service bulletin. ELECTRICAL SYSTEM. Instructions for advanced technical information for the PCM and Porsche innodrive software temporarily unavailable
No. 23152023-08-03. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Porsche Mobile Charger
No. 2116.22023-08-03. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the red warning instrument cluster - occupant seat belt not fastened.
No. 2229.82023-08-03. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the conbox current draw discharges 12v battery - Cayenne and 911.
No. 268-222023-07-06. Service bulletin. STEERING; ELECTRICAL SYSTEM. Technical information for an activated warning message "power steering reduced" in conjunction with fault memory entry B200049.
No. 2229.72023-07-06. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the conbox draw discharges 12v battery.
WNN12023-06-06. Service bulletin. ELECTRICAL SYSTEM. Porsche intranet posting with information on workshop campaign WNN1 - supplying drivers manual for Porsche Mobile Charger
No. 2302.12023-05-03. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING:HEADLIGHTS; VISIBILITY. Instructions on advanced technical information for the Cayenne - auxiliary headlight incorrect operation
No. 2226.12023-05-03. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Macan, Cayenne, and 911 - restarts unexpectedly - software fix temporarily unavailable.
No. 2224.12023-05-03. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Macan, Cayenne, and 911 - Porsche innodrive software temporarily unavailable
No. 2229.62023-05-03. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for Cayenne and 911 conbox current draw discharges 12v battery
No. 31-202023-04-07. Service bulletin. ELECTRICAL SYSTEM. Technical information for the diagnosis and handling of 12v lithium ion battery
No. 193-222023-03-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Technical information - Check Engine Warning Light Active / Fault Memory Entry "P26B100/00CB24" in the Thermal Management Control Unit (TME):
No. 23022023-03-04. Service bulletin. ELECTRICAL SYSTEM. Advanced technical information for the front turn signal inoperative - Cayenne as of MY19

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