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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

Bulletins, newest first
No. 122-202023-04-06. Service bulletin. SERVICE BRAKES, HYDRAULIC. Technical information on a complaint - brake noise
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. 23042023-03-04. Service bulletin. ENGINE AND ENGINE COOLING. Advanced technical information: E3.I/G2 V8 – Oil/Air Separator Membrane Failure
PIWIS2301k2023-03-04. Service bulletin. EQUIPMENT. Information for PIWIS tester update 41.750.045 & .046
No. 180-18-22023-03-04. Service bulletin. ENGINE AND ENGINE COOLING. Technical information for the cylinder head cover near the injector holes leaking - subsequent work on cylinder head.
No. 23022023-03-04. Service bulletin. ELECTRICAL SYSTEM. Advanced technical information for the front turn signal inoperative - Cayenne as of MY19
No. 23032023-03-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. Special tools information for the pneumatic cartridge gun.
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. 05-232023-03-04. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine A40 oils for all Porsche models that use A40 oil.
No. 04-232023-03-04. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C40 oils for all Porsche models that use C40 oil.
No. 03-232023-03-04. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C30 oils for all Porsche models that use C30 oil.
No. 2220.22023-02-07. Service bulletin. ENGINE AND ENGINE COOLING. Advanced technical information for the Cayenne 3.0 Liter engine variants.
No. 171-212023-02-07. Service bulletin. EQUIPMENT; SERVICE BRAKES, HYDRAULIC. Information on symptom based workshop manual - creaking/squeaking noises when operating the brake pedal.
No. 2235.12023-02-07. Service bulletin. ENGINE AND ENGINE COOLING. Instructions on advanced technical information for a display of "coolant temperature too high" on the Panamera, Macan, and Cayenne.
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. 22352023-01-10. Service bulletin. ENGINE AND ENGINE COOLING. Instructions on advanced technical information - coolant temperature is too high on the Panamera, Macan, and Cayenne.
No. 2220.12023-01-10. Service bulletin. ENGINE AND ENGINE COOLING. Instructions on advanced technical information for a "wanted car": Cayenne 3.0 liter engine variants.
No. 173-21-22023-01-10. Service bulletin. ENGINE AND ENGINE COOLING. Technical information for a Warning Message "Coolant Temperature Too High": Checking Coolant Pump and Change-Over Valve
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
No. 22292023-01-10. Service bulletin. EQUIPMENT. Special tools information for an assembly tool and thrust piece for the Cayenne and Macan
WNH12022-12-07. Service bulletin. ENGINE AND ENGINE COOLING. Porsche intranet posting with information on reprogramming the DME control unit
WMP22022-12-07. Service bulletin. ELECTRICAL SYSTEM. Porsche intranet posting with information on WMP2 workshop campaign - rework charging electronics

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