# Service bulletin BS4173ER1

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: 10145263
- Published by NHTSA: 2018\-10\-09
- Manufacturer's number: BS4173ER1
- Manufacturer's date: 2018\-09\-09
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

The EGS coolant hoses may leak in the baselight above the passenger area.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145263-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145263-0001.pdf)

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

## Components

Engine

## Vehicles listed

- 2013 to 2014 NOVA BUS LFS ARTIC
- 2015 to 2016 NOVA BUS LFS ARTIC

## Recalls for the same vehicles and component

- [2019171](/recalls/tc/2019171.md), 2019-04-05: Engine
- [2017264](/recalls/tc/2017264.md), 2017-05-16: Engine
- [2015525](/recalls/tc/2015525.md), 2015-11-05: Engine

## Other bulletins for the same vehicles and component

- [LI5427E](/bulletins/10247614.md), 2023-12-22, Service bulletin: ENGINE AND ENGINE COOLING. Improved durability of engine\-side heat exchanger hoses.
- [FT4651](/bulletins/10240760.md), 2023-08-17, Service bulletin: FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Failure of DEF sensor GEN 6 within the expected 5\-years lifespan.
- [LI5228ER2](/bulletins/10235130.md), 2023-04-27, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:SUMP/TANK. DEF GEN4 tank, tank head and sensor will no longer be available in service
- [FT5242](/bulletins/10231890.md), 2023-02-25, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. ECP radiator failures deemed to be due to overpressure events.
- [FT5243](/bulletins/10231883.md), 2023-02-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. ECP radiator failures deemed to be due to overpressure events.
- [APS5370E](/bulletins/10231881.md), 2023-02-24, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. The Delco\-Remy alternator is obsolete. Air cooled ductless \(Almott\) alternator, power cable and hardware kit to replace the Delco\-Remy oil\-cooled alternator.
- [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
- [PC1025R3](/bulletins/10206967.md), 2022-02-04, Service bulletin: ENGINE AND ENGINE COOLING. radiator leaking coolant
- [PC1025R2](/bulletins/10205864.md), 2022-01-03, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:COOLER/RADIATOR:HOSES AND FITTINGS. Radiator leaking coolant
- [PC1025R1](/bulletins/10202865.md), 2021-11-04, Service bulletin: ENGINE AND ENGINE COOLING. Radiator leaking coolant

JSON: [/v1/bulletins/10145263](/v1/bulletins/10145263)

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