Service bulletins for the 2021 New Flyer Xcelsior
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.
7 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Electrical system are shown. Show all
| TSIB 26-06 | 2026-05-14. Service bulletin. ELECTRICAL SYSTEM. Bulletin to follow when replacing LV batteries on buses equipped with certain Vanner battery equalizers. |
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| TSIB 21-03 | 2021-05-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Technical Service Information Bulletin revising the lubrication schedule for the scroll bearing on specifically equipped vehicles with the Powerex direct drive electric air compressor. |
| SMB195 | 2021-05-06. Service bulletin. ELECTRICAL SYSTEM. This Service Manual Bulletin provides additional information regarding the 6,000 mile Preventative Maintenance requirements for the low voltage battery system. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.