# Service bulletin FT4542

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: 10159744
- Published by NHTSA: 2019\-05\-13
- Manufacturer's number: FT4542
- Manufacturer's date: 2019\-04\-02
- NHTSA component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

Driver Defrost Not Working with High Fan Speed

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10159744-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10159744-9999.pdf)

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

## Components

Equipment and accessories, Glass, wipers and mirrors, Heating and air conditioning

## Vehicles listed

- 2016 to 2018 NOVA BUS LFS

## Recalls for the same vehicles and component

- [2025441](/recalls/tc/2025441.md), 2025-08-26: Heater And Defroster
- [2024034](/recalls/tc/2024034.md), 2024-01-24: Visual System
- [24V033000](/recalls/nhtsa/24V033000.md), 2024-01-19: STRUCTURE:BODY:DOOR; VISIBILITY
- [2023271](/recalls/tc/2023271.md), 2023-05-05: Visual System
- [22V323000](/recalls/nhtsa/22V323000.md), 2022-05-11: EQUIPMENT; EXTERIOR LIGHTING
- [2019172](/recalls/tc/2019172.md), 2019-04-05: Accessories
- [2018062](/recalls/tc/2018062.md), 2018-02-01: Heater And Defroster
- [2017477](/recalls/tc/2017477.md), 2017-10-04: Heater And Defroster
- [16V135000](/recalls/nhtsa/16V135000.md), 2016-03-04: VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES
- [2016104](/recalls/tc/2016104.md), 2016-03-03: Visual System

## Other bulletins for the same vehicles and component

- [BS5463ER1](/bulletins/10253690.md), 2024-04-30, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY. Failure of camera bracket will cause the camera to swing while bus is in motion.
- [BS5463E](/bulletins/10247616.md), 2023-12-22, Service bulletin: VISIBILITY; ELECTRICAL SYSTEM. Failure of camera bracket will cause the camera to swing while bus is in motion.
- [FT5463](/bulletins/10242846.md), 2023-09-26, Service bulletin: VISIBILITY; EQUIPMENT. Failure of camera bracket will cause the camera to swing while bus is in motion.
- [BS5300E](/bulletins/10222267.md), 2022-10-03, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT. HVAC deflectors are breaking at the folded attachment points. The brackets broke right at the bending due to a sharp curve
- [LI5228E](/bulletins/10210964.md), 2022-05-05, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING. DEF tank Head Unit GEN4 N8900882 is no longer available in service, it is replace by the new DEF tank Head Unit GEN5 N8910051
- [BS5210ER1](/bulletins/10209688.md), 2022-04-05, Service bulletin: ELECTRICAL SYSTEM; EQUIPMENT. Horn may fail due to the low internal high heat resistance.
- [FT5213](/bulletins/10203719.md), 2021-12-02, Service bulletin: VISIBILITY. Windshield Wiper Motor Failure
- [FT5055R1](/bulletins/10194809.md), 2021-06-02, Service bulletin: EQUIPMENT. Disconnect the power for the auxiliary heater. short term countermeasure
- [ft5090](/bulletins/10194787.md), 2021-06-02, Service bulletin: EQUIPMENT. Kidde fire suppression system tamper seal
- [BS3554ER3](/bulletins/10194397.md), 2021-05-24, Service bulletin: STRUCTURE:FRAME AND MEMBERS; EQUIPMENT; SUSPENSION. Auxiliary heater intake bracket Justify Auxiliary heater intake pipe mounting bracket might no be able to withstand the vibration induced by the bus frame.

JSON: [/v1/bulletins/10159744](/v1/bulletins/10159744)

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