# Service bulletin FT4558R1

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: 10164952
- Published by NHTSA: 2019\-09\-16
- Manufacturer's number: FT4558R1
- Manufacturer's date: 2019\-08\-01
- NHTSA component: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

## NHTSA's summary

Niehoff alternator regulator connections failing off

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164952-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164952-9999.pdf)

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

## Components

Electrical system, Alternator

## Vehicles listed

- 2016 NOVA BUS LFS
- 2018 NOVA BUS LFS

## Other bulletins for the same vehicles and component

- [FT4660](/bulletins/10164043.md), 2019-08-19, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Alternator Cable Rubbing on Thermostat Hose
- [FT4659](/bulletins/10164042.md), 2019-08-19, Service bulletin: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; EQUIPMENT. Alternator Cable Rubbing on Thermostat Hose
- [BS3919E](/bulletins/10110005.md), 2017-08-03, Service bulletin: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; ELECTRICAL SYSTEM. When the accelerator is suddenly depressed, the alternator voltage momentarily surge well above 32V because the voltage regulator response time is too long.
- [BS3891E](/bulletins/10110003.md), 2017-08-03, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. When the accelerator is suddenly depressed, the alternator voltage momentarily surge well above 32V because the voltage regulator response time is too long.
- [BS3270E](/bulletins/10083953.md), 2016-11-04, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. UNABLE TO PERFORM STATIONARY REGENERATION.

JSON: [/v1/bulletins/10164952](/v1/bulletins/10164952)

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