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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
WMD22021-05-05. Service bulletin. EQUIPMENT. Porsche intranet posting with information on Workshop Campaign WMD2 - Teach Tire Pressure Monitoring (TPM) system using the PIWIS Tester.
WMD72021-05-05. Service bulletin. SEATS. Porsche intranet posting with information for Workshop Campaign WMD7 Stop Delivery - Retrofitting heating element for passenger seat backrest.
No. 41-212021-05-05. Service bulletin. ENGINE AND ENGINE COOLING. Instructions on checking the fuel injectors in the event of Engine Knocking, Jerking or Vibrations During Acceleration.
No. 52-212021-05-05. Service bulletin. ELECTRICAL SYSTEM. Information on how to deal with a potential cyber security breach.
No. 55-212021-05-05. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for removing and installing the drive belt on 8 cylinder gas engines since 2017.
No. 21072021-05-05. Service bulletin. ELECTRICAL SYSTEM. Advanced technical information on Replacing the 12V battery in the Cayenne.
No. D4a2021-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Historical information on Porsche product evolution.
No. 38-212021-04-05. Service bulletin. ELECTRICAL SYSTEM. Information on Checking Software Version on Porsche mobile chargers and Updating it if Necessary Before Delivery to Customers.
No. 13-212021-04-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved C20 style engine oils for classic and new Porsche models since 1984.
No. 36-21-12021-04-05. Service bulletin. ELECTRICAL SYSTEM. Instructions on how to reprogram the HV charger control unit in the event that charging is canceled and the check engine light is active.
PIWIS2101m2021-04-05. Service bulletin. ELECTRICAL SYSTEM. Information for new Porsche PIWIS tester update #40.000.035
No. D13.12021-04-05. Service bulletin. EQUIPMENT. Parts information on new PIWIS Tester program for Independent Repair Facilities (IRFs).
No. 09-212021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved A40 style engine oils for new and classic Porsche vehicles MY 1984 and newer.
No. 08-212021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 engine oils for new and classic Porsche vehicles MY 1984 and newer.
No. 07-21-12021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 engine oils for all new and Classic Porsche vehicles MY1984 and newer.
No. 03-212021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C20 engine oils for all new and classic Porsche models 1984 and newer.
PIWIS2102j2021-04-02. Service bulletin. EQUIPMENT. Information on PIWIS Tester update 40.000.020 & .022.
No. 205-202021-04-02. Service bulletin. POWER TRAIN. Workshop information for a transmission symptom. What to do if there are oil leaks on the automatic transmission.
No. 206-202021-04-02. Service bulletin. POWER TRAIN. Workshop information for a transmission symptom, how to deal with oil leaks on the transfer box.
122-S6Q2R-062021-03-06. Service bulletin. EQUIPMENT; SERVICE BRAKES. Resubmitting at request of Mr. Bernard Hardgrave. Advanced technical information on brake fluid for all Porsche vehicles.
122-K9M7R-062021-03-06. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Resubmitting at request of Mr. Bernard Hardgrave. Information on fogging lighting components.
122-V2W7U-122021-03-05. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Resubmitting at request of Mr. Bernard Hardgrave. Instructions on how to rework the exhaust system on the Cayenne S in the every that there is a buzzing noise from the Exhaust system during deceleration.
No. D5462021-03-02. Service bulletin. EQUIPMENT. Parts withdrawal information for a compass.
No. D5502021-03-02. Service bulletin. EQUIPMENT; STRUCTURE. Parts withdrawal information for a radial seal.
No. D5492021-03-02. Service bulletin. ENGINE AND ENGINE COOLING. Parts withdrawal information for a valve spring.

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