# Other MCD\-017

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: Other
- NHTSA id: 11037663
- Published by NHTSA: 2026\-10\-01
- Manufacturer's number: MCD\-017
- Manufacturer's date: 2026\-09\-04
- Campaign id or software version: MCD\-017
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

A software issue was causing the turn signal to stop functioning if the brake pedal was depressed. Instructions on verifying that the brake lights and turn signals function correctly and if not, how to correct.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037663-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037663-9999.pdf)

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

## Components

Lighting

## Vehicles listed

- 2027 TIFFIN ALLEGRO BUS

JSON: [/v1/bulletins/11037663](/v1/bulletins/11037663)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Other%20MCD-017&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11037663&vehicle=Other%20MCD-017)