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
| No. 16-20 | 2020-06-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. List of approved A40 engine oils for all applicable vehicles as of 1984. |
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| No. 31-12 | 2020-06-01. Service bulletin. ELECTRICAL SYSTEM. Instructions for what to do in the event that the customer loses the driver's key while transporting the vehicle. |
| No. 41-20 | 2020-06-01. Service bulletin. ELECTRICAL SYSTEM. Instructions for how to perform a software update on the Control unit for the auxiliary alarm system in the event that the vehicle will not start. |
| 122-L7F5W-05 | 2020-05-05. Service bulletin. LATCHES/LOCKS/LINKAGES. Parts withdrawal for lower lid lock used on certain 911 models. |
| 122-U6R4G-05 | 2020-05-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Workshop Campaign instructions for WS Campaign WLA4 - Retrofitting Heat Shield. |
| 122-M8J3B-05 | 2020-05-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 engine oils for all Porsche models since 1984. |
| 122-G8Z7M-04 | 2020-04-02. Service bulletin. POWER TRAIN. Instructions for replacing the vent link for the clutch chamber in the event that transmission oil leaks out when driving on race circuits. |
| 122-F4J4K-04 | 2020-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved engine oils for all Porsche models. |
| 122-M7J7N-04 | 2020-04-02. Service bulletin. ENGINE AND ENGINE COOLING. Updated instructions for reworking the coolant pipe on affected vehicles if there is a loss of coolant in the coolant pipe. |
| 122-B6M5R-04 | 2020-04-01. Service bulletin. STEERING. Update on how to replace the tie rod on the rear axle and reprogram the vehicle on affected 918 and 911 models. |
| 122-T8Y5J-04 | 2020-04-01. Service bulletin. WHEELS. List of approved wheel and tire combinations for the 991.2 generation 911. |
| 122-Z6A7N-04 | 2020-04-01. Service bulletin. WHEELS. List of approved wheel and tire combinations for the 991.2 generation 911. |
| 122-J4L4X-03 | 2020-03-05. Service bulletin. EQUIPMENT. Bulletin outlining new blitz table replacement castors due to a high rate of failure reported by dealers. |
| 122-H6D8D-03 | 2020-03-05. Service bulletin. ELECTRICAL SYSTEM. Bulletin outlining new PIWIS tester update 39.100.030 & .035 |
| 122-W3U5D-03 | 2020-03-05. Service bulletin. TIRES; WHEELS. List of approved wheels and tires for the 911. |
| 122-W5C4C-03 | 2020-03-05. Service bulletin. SEATS. Instructions for addressing leather seat wrinkling on older models. |
| 122-B7N6X-03 | 2020-03-05. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for retrofitting the sport exhaust system on the 991 generation 911. |
| 122-H9F7J-03 | 2020-03-05. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for retrofitting the sport exhaust system on the 991 generation 911. |
| 122-V4J2F-03 | 2020-03-05. Service bulletin. ELECTRICAL SYSTEM. Bulletin outlining PIWIS tester update 39.200.000, .010, .015, .016, & .017 |
| 122-N9Z9J-03 | 2020-03-05. Service bulletin. WHEELS. List of approved wheels and tires for the 991 generation 911. |
| 122-A6B4Q-02 | 2020-02-04. Service bulletin. POWER TRAIN. Technical information outlining a transmission symptom where transmission oil leaks when driving on race circuits. The vent line for the clutch chamber must be replaced. |
| 122-P7A8T-02 | 2020-02-04. Service bulletin. ELECTRICAL SYSTEM. Technical information outlining the customer complaint that the locking "beep" not working as specified. The issue can be corrected by reprogramming the vehicle's rear end electronics. |
| 122-T9S3B-02 | 2020-02-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 engine oils for all Porsche vehicles since 1984. |
| 122-Z2X7A-02 | 2020-02-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C20 engine oils for all Porsche vehicles since 1984. |
| 122-S7K8Z-02 | 2020-02-04. Service bulletin. WHEELS; ENGINE AND ENGINE COOLING. List of approved A40 engine oils for all Porsche vehicles since 1984. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.