# Service bulletin BS4972ER1

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: 10189636
- Published by NHTSA: 2021\-04\-02
- Manufacturer's number: BS4972ER1
- Manufacturer's date: 2021\-03\-26
- NHTSA component: STEERING; ELECTRICAL SYSTEM

## NHTSA's summary

Reports of intermittent low oil level telltale alarms when oil level is adequately filled. Replacement of Hydraulic Oil Level Sensor.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189636-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189636-9999.pdf)

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

## Components

Electrical system, Steering

## Vehicles listed

- 2020 NOVA BUS LFS

## Recalls for the same vehicles and component

- [2025384](/recalls/tc/2025384.md), 2025-07-22: Steering
- [25V476000](/recalls/nhtsa/25V476000.md), 2025-07-22: STEERING:ELECTRIC POWER ASSIST SYSTEM
- [2025176](/recalls/tc/2025176.md), 2025-04-07: Electrical
- [23V607000](/recalls/nhtsa/23V607000.md), 2023-08-31: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
- [2023348](/recalls/tc/2023348.md), 2023-06-14: Electrical
- [2022649](/recalls/tc/2022649.md), 2022-11-15: Steering
- [22V845000](/recalls/nhtsa/22V845000.md), 2022-11-15: STEERING:CRITICAL FASTENERS
- [2022310](/recalls/tc/2022310.md), 2022-06-13: Electrical
- [22V416000](/recalls/nhtsa/22V416000.md), 2022-06-13: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
- [2021568](/recalls/tc/2021568.md), 2021-08-31: Steering

## Other bulletins for the same vehicles and component

- [FT5567](/bulletins/10252140.md), 2024-03-29, Service bulletin: ELECTRICAL SYSTEM. Battery Unbalanced Light Logic with AGM Battery.
- [FT5550](/bulletins/10252139.md), 2024-03-29, Service bulletin: ELECTRICAL SYSTEM. The Parker PHD70 display might freeze or not work properly.
- [BS5543E](/bulletins/10250585.md), 2024-02-24, Service bulletin: ELECTRICAL SYSTEM. Battery tray structure cracks due to thin sheet metal.
- [FT5536](/bulletins/10247617.md), 2023-12-22, Service bulletin: ELECTRICAL SYSTEM. Battery Tray Structure Cracks. Battery hold downs may slip between batteries.
- [FT5448](/bulletins/10244594.md), 2023-11-01, Service bulletin: ENGINE AND ENGINE COOLING; STEERING. Rework allied motion e\-Steering motor. 24V e\-steering power supply threads length tolerances might not be respecting to the drawing specifications.
- [BS5447E](/bulletins/10244593.md), 2023-11-01, Service bulletin: ENGINE AND ENGINE COOLING; STEERING. Rework allied motion e\-Steering motor. 24V e\-steering power supply threads length tolerances are not respect to standard.
- [FT5465](/bulletins/10244339.md), 2023-10-29, Service bulletin: ELECTRICAL SYSTEM. Erroneous Fault Codes reporting on the AVM System of Clever Devices.
- [FT5404E](/bulletins/10239092.md), 2023-07-12, Service bulletin: STEERING. There is a potential restriction of fluid due to an improperly placed clamp which could cause the power steering system to not operate has intended.
- [FT5437](/bulletins/10237831.md), 2023-06-19, Service bulletin: ELECTRICAL SYSTEM. The supplier Lift\-U recommends the addition of a detection delay to prevent wrong fault code in the AVM.
- [BS5320ER1](/bulletins/10233268.md), 2023-04-03, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Fire light coming on in the dash, Fire detection system

JSON: [/v1/bulletins/10189636](/v1/bulletins/10189636)

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