# Service bulletin TSIB 26\-06

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.

- Type: Service bulletin
- NHTSA id: 11032698
- Published by NHTSA: 2026\-05\-14
- Manufacturer's number: TSIB 26\-06
- Manufacturer's date: 2026\-05\-01
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Bulletin to follow when replacing LV batteries on buses equipped with certain Vanner battery equalizers.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11032698-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11032698-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2011 to 2025 NEW FLYER XCELSIOR

## Other bulletins for the same vehicles and component

- [ITS61783](/bulletins/11034102.md), 2026-06-26, Service bulletin: ELECTRICAL SYSTEM. Instructions for uploading a program to move existing J1939 message routing from DPS instrument cluster to PVSG.
- [TSIB 15\-07](/bulletins/10194272.md), 2021-05-24, Service bulletin: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Alternator Power Cable Support Inspections
- [TSIB 21\-03](/bulletins/10191836.md), 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](/bulletins/10191832.md), 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.
- [SMB179](/bulletins/10159335.md), 2019-05-01, Service bulletin: ELECTRICAL SYSTEM; SERVICE BRAKES, AIR; SERVICE BRAKES, HYDRAULIC. Service Manual Bulletin \- revised troubleshooting charts for MGM E\-Stroke brake monitoring system
- [TSIB 15\-07](/bulletins/10076193.md), 2016-07-07, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Alternator Power Cable Support Inspections New Flyer has observed several instances of chafing of the alternator power cable installations in certain of customers’ vehicles. New Flyer is issuing this Technical Service Information Bulleting to notify its customers of the potential for this chafing to occur in certain circumstances. In order to prevent chafing, New Flyer reminds customers that the inspection procedures described in the New Flyer Service Manuals relating to its vehicles must be followed before chafing issues manifest themselves and require extensive and/or expensive repairs. The inspection of alternator power cables is located in the Preventative Maintenance section of the New Flyer Service Manual for the vehicle and is to be conducted during every 6,000 mile \(9,600km\) inspection.

JSON: [/v1/bulletins/11032698](/v1/bulletins/11032698)

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