Service bulletins for the 2012 Toyota 4Runner
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.
356 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: 12-volt battery are shown. Show all
| T-TT-0362-15 | 2018-04-23. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted. |
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| T-TT-0086-11 | 2018-04-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE. TechTip: Condition - The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.