# Service campaign RCA\-78\-26\-007\-1

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 campaign
- NHTSA id: 11038239
- Published by NHTSA: 2026\-10\-06
- Manufacturer's number: RCA\-78\-26\-007\-1
- Manufacturer's date: 2026\-09\-23
- Campaign id or software version: FSAM\-1839
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Rivian is initiating a customer satisfaction campaign for some model year 2027 R2 vehicles that may have been built with a south/rear multifunction module that was incorrectly assembled by the supplier. This condition may result in a reduction of electrical isolation and a corresponding malfunction indicator on the driver display informing the driver that the vehicle requires service. In rare instances, the driver will receive a notification to pull over safely and the vehicle will enter a reduced performance safe\-state mode. Rivian will inspect the south/rear multifunction module and replace the south/rear multifunction module or the HV battery energy management control module. Rivian is launching this campaign for customer satisfaction and to ensure the quality of Rivian vehicles.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038239-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11038239-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2027 RIVIAN R2

## Recalls for the same vehicles and component

- [26V625000](/recalls/nhtsa/26V625000.md), 2026-09-29: ELECTRICAL SYSTEM:PROPULSION SYSTEM:CRITICAL FASTENERS

## Other bulletins for the same vehicles and component

- [RCA\-34\-26\-001\-1](/bulletins/11038236.md), 2026-10-06, Service campaign: ELECTRICAL SYSTEM. Rivian is initiating a customer satisfaction campaign for some model year 2027 R2 vehicles that have a flexible charge port busbar that may not have been seated properly after the vehicle was repaired. This condition could prevent the vehicle from being DC fast charged. Rivian will inspect the flexible charge port busbar connection at the HV battery charge port connector and re\-seat or replace the components. Rivian is launching this campaign for customer satisfaction and to ensure the quality of Rivian vehicles.
- [RCA\-78\-26\-006\-1](/bulletins/11037104.md), 2026-09-05, Service bulletin: ELECTRICAL SYSTEM. Rivian is initiating a customer satisfaction campaign for some 2027 R2 vehicles that have wheelwell harnesses that could be prone to stretching and/or chafing over time. This may cause a wheel speed sensor malfunction and/or indicator light to illuminate on the driver display alerting the driver to have service performed on their vehicle. Rivian will reinforce or replace the harnesses. Rivian is launching this campaign for customer satisfaction and to ensure the quality of Rivian vehicles.

JSON: [/v1/bulletins/11038239](/v1/bulletins/11038239)

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