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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

Bulletins, newest first
No. 04-21-32021-04-05. Service bulletin. ELECTRICAL SYSTEM. Information on a possible customer complaint concerning Google Earth Satellite view in the PCM 4.0.
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. 26-182021-04-02. Service bulletin. ELECTRICAL SYSTEM. Information on a Navigation system update for the PCM3.1
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-N8C4M-122021-03-06. Service bulletin. EQUIPMENT; WHEELS; LATCHES/LOCKS/LINKAGES. Resubmitting at request of Mr. Bernard Hardgrave. Advanced Technical information for center-locking wheel nut tightening.
122-X7L3M-122021-03-06. Service bulletin. TIRES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; WHEELS. Resubmitting at request of Mr. Bernard Hardgrave. List of approved wheels and tires for the 911.
122-V9Y4C-122021-03-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; EQUIPMENT. Resubmitting at request of Mr. Bernard Hardgrave. Instructions on how to correct a rattling noise from around the oil pump crankshaft drive.
122-M2G8R-122021-03-06. Service bulletin. TIRES; WHEELS. Resubmitting at request of Mr. Bernard Hardgrave. List of approved wheels and tires for the 991.2 generation GT2RS and GT3RS.
122-K9M7R-062021-03-06. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Resubmitting at request of Mr. Bernard Hardgrave. Information on fogging lighting components.
No. D5452021-03-02. Service bulletin. ELECTRICAL SYSTEM. Parts withdrawal information for assorted control units.
No. D2512021-03-02. Service bulletin. EQUIPMENT. New parts promotion for all weather mats and cargo liner.
No. 1820.12021-02-02. Service bulletin. STRUCTURE. Special tools information on a measuring and alignment system.
No. 1758.22021-02-01. Service bulletin. EQUIPMENT. Special tools information on Logo Templates and exchangeable inserts.
No. 1758.12021-02-01. Service bulletin. EQUIPMENT. Special tools information on Logo templates and exchangeable inserts.
No. 21002021-02-01. Service bulletin. EQUIPMENT. Porsche Specials tools update for an offline SD Card update for the Map services.
No. 72-172021-02-01. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. Instructions for reworking the fan motor in the event that the HVAC does not function.
WLN12021-01-05. Service bulletin. EQUIPMENT. Porsche intranet posting with preliminary information on WLN1 stop sale/workshop campaign.
No. 200-202021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Instructions on how to delete and re-initialize the user (driver) in the event that a message appears that the PCM cannot be closed.
No. 179-202021-01-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Instructions for clearing check engine faults related to tank ventilation system.
No. 54-202021-01-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved A40 style engine oils for new and classic Porsche models.
No. 53-202021-01-05. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 style engine oils for new and classic Porsche vehicles.

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