# Service bulletin RSB 503

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: 10129952
- Published by NHTSA: 2018\-03\-12
- Manufacturer's number: RSB 503
- Manufacturer's date: 2018\-01\-12
- NHTSA component: EXTERIOR LIGHTING:HEADLIGHTS; EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH

## NHTSA's summary

Newmar Corporation has decided that a defect relating to motor vehicle safety exists in specific motorhomes built on Freightliner Chassis. On certain motorhomes, if the headlight high beams are activated, only the high beam bulbs illuminate. The intention of the high beam function on the affected coaches is to have both the high beam and low beam bulbs illuminate together.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10129952-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10129952-0001.pdf)

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

## Components

Lighting, Headlights

## Vehicles listed

- 2017 NEWMAR LONDON AIRE

JSON: [/v1/bulletins/10129952](/v1/bulletins/10129952)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20RSB%20503&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10129952&vehicle=Service%20bulletin%20RSB%20503)