Rivian service campaign FSAM-1635
What it saysFSAM-1635 3-Day SMS Message 1: Urgent Notice from Rivian: Action required for your R1. NHTSA’s full summary ↓
Rivian filed this with NHTSA as a service campaign dated Nov 14, 2025, received Sep 3, 2025, about the electrical system — 5 documents under this number: FSAM-1635 Email 11132025, SMS FSAM-1635 - Reminder, 3-Day SMS Campn FSAM-1635, RCA-78-25-004-2 and 1 more. It names 2 model years (2025). 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 communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
FSAM-1635 3-Day SMS ● Message 1: ● Urgent Notice from Rivian: Action required for your R1. Our records indicate the 12V battery in your vehicle needs to be replaced immediately to prevent a potential no-start situation. This replacement is critical for your vehicle's reliability and will be performed at no cost to you. Schedule your appointment now by calling: (855) 748-4265 ● Message 2: ● [FirstName], this is a reminder from Rivian about the no-cost 12V battery replacement for your R1. Our technicians can complete this warranty service quickly to get you back on the road and avoid a potential no-start situation. Schedule your service now by calling: (855) 748-4265 ● Message 3: ● Reminder from Rivian: Service slots to replace the 12V battery on your R1 are filling up. Give us a quick call so that we can perform this warranty service at no cost to you as soon as possible. Schedule immediately: (855) 748-4265
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| FSAM-1635 Email 11132025 | Other | Nov 14, 2025 | 11026103 | PDF, 783 KB |
| SMS FSAM-1635 - Reminder | Service campaign | Sep 12, 2025 | 11023487 | PDF, 87 KB |
| 3-Day SMS Campn FSAM-1635 | Other | Aug 8, 2025 | 11022477 | PDF, 56 KB |
| RCA-78-25-004-2 | Service bulletin | Aug 1, 2025 | 11022479 | PDF, 233 KB |
| FSAM-1635 - Bulk SMS | Other | Aug 1, 2025 | 11022473 | PDF, 28 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 2 model years this bulletin names have filed 64 complaints with NHTSA since 2015. 11 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.
In late May 2025, I took delivery of a new leased 2025 Rivian R1S equipped with the MaxPack battery. Since delivery, the vehicle has had intermittent electrical issues with the USB-C ports that I reported on June 12th (approx 3 weeks from taking delivery), but on July 28, 2025, it experienced a sudden and complete electrical system…
2025 Rivian R1S · Electrical System · filed with NHTSA Aug 11, 2025 · ODI 11679876
This vehicle has experienced two separate failures of the high-voltage (HV) battery pack, each resulting in a different drive unit being damaged and total loss of electrical systems while driving. First incident (July 28, 2025): While driving, all warning lights illuminated and the vehicle indicated a possible electrical hazard.
2025 Rivian R1T · Electrical System · filed with NHTSA Jun 29, 2026 · ODI 11747254
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 group16 other manufacturer communications filed against these Rivian models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Rivian list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| FSAM-1712 | Service bulletin | Aug 6, 2026 | Rivian is initiating a customer satisfaction campaign for some model year 2025 vehicles that may have a loose or cross-threaded ground nut i… |
| FSAM-1785 | Service bulletin | May 19, 2026 | Rivian is launching a technical service bulletin for some model year 2022-2024 R1 vehicles that may have ultrasonic sensors detached from th… |
| FSAM-1755 | Service campaign | Mar 5, 2026 | Rivian is initiating a customer satisfaction campaign for some model year 2023-2024 R1T vehicles that were built with a rear zone control mo… |
| 12v Battery Low SMS 2 | Other | Feb 17, 2026 | SMS Reminder sent to customers who had still open potential 12-volt failures. |
| 12v Battery Low SMS 1 | Other | Feb 9, 2026 | SMS sent to customers with potential 12-volt failure and advising need for replacement to avoid drivability interruptions. |
| SOC IMBALANCE | Other | Jan 16, 2026 | SMS sent to LFP owners impacted by SOC Imbalance alerting them that their efforts have resolved their HV Battery Pack concern and may charge… |
| RCA-78-25-004-1 | Service campaign | May 13, 2025 | Rivian is initiating a customer satisfaction campaign for some model year 2025 R1T and R1S vehicles that may have been built with upper and… |
| RCA-78-25-003-1 | Service campaign | May 6, 2025 | Rivian is initiating a customer satisfaction campaign for some model year 2023-2025 R1T and R1S vehicles. These vehicles may have been built… |
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-1635 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-1635 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-1635 cover?
The manufacturer filed it against 2 model years: 2025 Rivian R1S, 2025 Rivian R1T. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.