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Service bulletins for the 2020 Porsche 911

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.

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

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By component

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By topic

Bulletins, newest first
ATI016022021-06-28. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. The Approval and Support Management Program (ASM)
WMD22021-06-03. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. Porsche intranet posting with preliminary information for Porsche workshop campaign WMD2 Workshop Campaign - Teach Tire Pressure Monitoring (TPM) system using the PIWIS Tester.
No. 17-212021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved engine oils for new and classic Porsche models.
PIWIS2101y2021-06-02. Service bulletin. EQUIPMENT. Information on Porsche PIWIS Tester III Online Update 40.200.020.
No. 21092021-06-02. Service bulletin. EQUIPMENT. Special tools information for pinout tool box tools.
No. 2110.12021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for correcting DMTL leakage faults on 4.0 engines.
No. 21102021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Advanced technical information for diagnosing DMTL leakage faults on 4.0 engines.
No. 42-21-12021-06-02. Service bulletin. LATCHES/LOCKS/LINKAGES. Instructions for correcting a creaking or squealing noise when the door handle moves in or out.
PIWIS2101x2021-06-02. Service bulletin. ELECTRICAL SYSTEM. Information on Porsche PIWIS Tester III Online Update 40.200.000, .010, .015 & .016.
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. 49-21-22021-06-02. Service bulletin. STRUCTURE. Porsche Recall information for Recall campaign AMA3 - Reworking Various Threaded Connections on the Chassis.
No. D5562021-06-02. Service bulletin. EQUIPMENT. Parts withdrawal information for 992 trim pieces.
AMA62021-05-05. Service bulletin. SUSPENSION. Porsche intranet posting with information for Recall Campaign AMA6 – Replacing threaded connections on upper control arm on rear axle.
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.
No. 52-212021-05-05. Service bulletin. ELECTRICAL SYSTEM. Information on how to deal with a potential cyber security breach.
No. 40-212021-05-05. Service bulletin. ELECTRICAL SYSTEM. Instructions on how to remedy a Lift system fault in the instrument cluster of the 992 generation 911.
No. 49-21-22021-04-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE. Porsche recall campaign information for Recall campaign AMA3 - Reworking Various Threaded Connections on the Chassis.
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.
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. 06-21-22021-04-02. Service bulletin. ELECTRICAL SYSTEM. Instructions for re-programming the DME control unit in the event that there are warning messages in the instrument cluster.
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.

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