# Service bulletin TSB 548

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: 10164998
- Published by NHTSA: 2019\-09\-18
- Manufacturer's number: TSB 548
- Manufacturer's date: 2019\-08\-22
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT

## NHTSA's summary

The Newmar Engineering Department discovered that HWH changed the step programming for 2020 coaches, causing the curb sensor not to function as originally designed. The new replacement version \(A59650\-4\) will stop the auto level function any time the curb sensor activates after the two\-second delay. If the engine is running, the auto level function will stop and air up the coach’s air bags when the curb sensor is activated.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164998-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164998-9999.pdf)

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

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2020 NEWMAR ESSEX
- 2020 NEWMAR KING AIRE
- 2020 NEWMAR LONDON AIRE

JSON: [/v1/bulletins/10164998](/v1/bulletins/10164998)

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