Service bulletins for the 2012 Toyota Sienna
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.
372 on file from NHTSA, as of 2026-10-19.
About B1821 on the 2012 Toyota Sienna: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: B1821 are shown. Show all
| TSB-0172-12 | 2012-12-11. Service bulletin. AIR BAGS. TOYOTA: AN INTERMITTENT EXHIBITION OF SRS LAMP ON WITH DIAGNOSTIC TROUBLE CODE (DTC) B1821 AND/OR B1826 CONDITION. IMPROVEMENT TO TERMINAL CRIMPING OF SIDE AIR BAG TO ADDRESS SITUATION. MODEL 2011-2012 SIENNA. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.