Rivian service campaign FSAM-1839
What it saysRivian 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. NHTSA’s full summary ↓
Rivian filed this with NHTSA as a service campaign dated Sep 23, 2026, received Oct 6, 2026, about the electrical system — 1 document under this number: RCA-78-26-007-1. It names 1 model year (2027). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationRivian 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.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| RCA-78-26-007-1 | Service campaign | Sep 23, 2026 | 11038239 | PDF, 478 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 5 complaints with NHTSA since 2015. 1 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group2 other manufacturer communications filed against the Rivian R2 under the same component group (electrical system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| FSAM-1843 | Service campaign | Sep 10, 2026 | Rivian is initiating a customer satisfaction campaign for some model year 2027 R2 vehicles that have a flexible charge port busbar that may… |
| FSAM-1822 | Service bulletin | Aug 28, 2026 | Rivian is initiating a customer satisfaction campaign for some 2027 R2 vehicles that have wheelwell harnesses that could be prone to stretch… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Rivian, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Rivian FSAM-1839 a recall?
No. A service campaign is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the FSAM-1839 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does FSAM-1839 cover?
The manufacturer filed it against 1 model year: 2027 Rivian R2. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.