# Service bulletin 511946B

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: 11021967
- Published by NHTSA: 2025\-08\-18
- Manufacturer's number: 511946B
- Manufacturer's date: 2025\-08\-14
- Campaign id or software version: 511946B
- NHTSA component: VISIBILITY/WIPER; ELECTRICAL SYSTEM

## NHTSA's summary

According to FCA recall 25V330: "The Security Gateway Module \(SGW\) on your vehicle may prevent some communication between vehicle modules, which may result in the rearview image not displaying in a backing event. The vehicle operator may notice that the rearview image is not displayed if attempting to reference the image while backing. A rearview camera image that does not display reduces the driver's visibility of what is behind the vehicle and if not heeded, increases the risk of a crash."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021967-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11021967-9999.pdf)

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

## Components

Electrical system, Glass, wipers and mirrors, Wipers and washers

## Vehicles listed

- 2023 to 2024 FOREST RIVER BUS FOREST RIVER VAN
- 2023 FOREST RIVER BUS MOBILITY TRANS SAFETBUS
- 2025 FOREST RIVER BUS MOBILITY TRANS SAFETBUS

JSON: [/v1/bulletins/11021967](/v1/bulletins/11021967)

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