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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.

By type

By component

By trouble code

By topic

Bulletins, newest first
No. 121-212021-11-05. Service bulletin. SEATS. Information on the vehicle interior - backrest (seat) release stiff or actuating lever is torn. Checking and replacing backrest frame.
No. 97-212021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C30 engine oils for all Porsche models using C30 oil.
No. 98-212021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C20 engine oils for all Porsche models using C40 oil.
No. 96-212021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C20 engine oils for all Porsche models using C20 oil.
No. 13-212021-11-05. Service bulletin. EQUIPMENT. Installation and conversion instructions for the SportDesign Package.
No. 76-212021-11-05. Service bulletin. WHEELS; TIRES. Instructions on the manufacturer's certificate for approved winter tires, wheels, and snow chains.
No. 92-21-22021-11-05. Service bulletin. TIRES; WHEELS. Instructions on the manufacturer's certificate for approved wheels and tires.
No. 75-212021-11-05. Service bulletin. WHEELS; TIRES. Instructions on the manufacturer's certificate for approved summer tires, wheels, and spacers.
No. 89-212021-11-05. Service bulletin. WHEELS; TIRES. Instructions on the manufacturer's certificate for approved summer tires and wheels.
No. 2127-22021-11-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Instructions on advanced technical information for poor ground leads - starting issue.
No. 21282021-11-05. Service bulletin. EQUIPMENT. Special tools information for the holding bridge.
No. 2125-12021-11-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:MECHANICAL. Instructions on the advanced technical information for the ignition lock warning.
No. 31-202021-11-04. Service bulletin. ELECTRICAL SYSTEM. Information for handling 12v lithium-ion batteries.
No. 2108.12021-11-04. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE. Instructions on advanced technical information for lane change assist warning.
No. 141-21-12021-11-04. Service bulletin. SERVICE BRAKES, HYDRAULIC. Recall repair information for recall campaign AMB9 - reworking brake booster.
No. 38-142021-10-06. Service bulletin. EQUIPMENT. Installation and conversion instructions for retrofitting a bicycle rack on a variety of vehicles.
No. 2113.12021-10-06. Service bulletin. ELECTRICAL SYSTEM:INTERIOR LAMPS/BULBS; UNKNOWN OR OTHER. Special Tools information for Deutronic Signal Lamps.
No. 1904.22021-10-06. Service bulletin. EQUIPMENT. Information on new special tool requirements for all vehicles.
No. 59-212021-09-03. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C20 engine oils for all Porsche models using C20 oil.
No. 60-212021-09-03. Service bulletin. ENGINE AND ENGINE COOLING. List of approved engine C30 engine oils for all Porsche vehicles using C30 oil.
No. 61-212021-09-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved engine oils for all Porsche models using C40 oil.
No. 21142021-09-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Special tools information for a 12V Power Supply for PT3G Oscilloscope.
No. 1836.12021-09-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. New Special tools information for a Schumacher 100 Amp Reprogrammer / Power Supply with Battery Support.
No. 1904.12021-09-02. Service bulletin. EQUIPMENT. Special tools information for new VAS 5908 Requirements.
No. 21132021-09-02. Service bulletin. ELECTRICAL SYSTEM. Special tools information for new Deutronic Signal Lamps.

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