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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.

By type

By component

By trouble code

Bulletins, newest first
No. 21092021-06-02. Service bulletin. ELECTRICAL SYSTEM. Advanced technical information for Critical 12V Li-ion Battery recycling.
No. 21082021-06-02. Service bulletin. ELECTRICAL SYSTEM. Advanced technical information for a lane change assist warning along with fault codes.
No. D5572021-06-02. Service bulletin. ELECTRICAL SYSTEM. Parts withdrawal information for an Aerial Connection for the E3 Cayenne.
WMD62021-05-05. Service bulletin. ENGINE AND ENGINE COOLING. Porsche intranet posting with information on Workshop campaign WMD6 Stop Delivery – Replacing engine.
AMA9P2021-05-05. Service bulletin. SUSPENSION. Porsche intranet posting with Pre-Information on Recall Campaign AMA9 Stop Delivery / Recall campaign - Replacing threaded connections on rear axle trailing arm.
AMA92021-05-05. Service bulletin. SUSPENSION. Porsche intranet posting with information on Recall Campaign AMA9 Stop Delivery - Replacing threaded connections on the rear axle trailing arm.
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. 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. 14-212021-04-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved C20 engine oils for new Porsche vehicles.
No. 11-212021-04-05. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. List of approved C40 engine oils for new Porsche vehicles.
No. 10-212021-04-05. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 style engine oils for new Porsche vehicles.
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. 06-21-12021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 engine oils for all MY2021 Porsche vehicles.
No. 05-212021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 engine oils for MY 2021 Porsche vehicles.
No. 04-21-42021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C20 engine oils for all new MY 2021 Porsche vehicles.
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.

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