NHTSA Office of Defects Investigation
Preliminary Evaluation PE26-004: Rear Toe Link May Separate
- Open
NHTSA's Office of Defects Investigation opened Preliminary Evaluation PE26-004 on May 26, 2026; NHTSA's investigations file listed it as open on October 23, 2026. NHTSA's investigations file lists the Rivian R1S and R1T for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- PE26-004 (also written PE26004)
- Investigation type
- Preliminary Evaluation The first stage of most defect investigations: NHTSA's Office of Defects Investigation gathers basic information about a possible safety defect, including from the manufacturer.
- Status
- Open since May 26, 2026
- Opened
- Vehicle or equipment manufacturer
- Rivian Automotive, LLC
- Component
- Suspension — Rear
- Vehicles and equipment
- Rivian R1S and R1T
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Preliminary Evaluation PE26-004.
The Office of Defects Investigation (ODI) has received two Vehicle Owner Questionnaires (VOQs) reporting left rear toe link separation in certain Model Year (MY) 2023-2024 Rivian R1S vehicles. Both VOQs report component separation while driving, causing the vehicles to swerve across multiple lanes of traffic. One incident resulted in a collision with an adjacent vehicle and roadside barrier. In both separations, the bolt that maintains the integrity of the toe link fractured. Evidence collected from the complaint vehicles included repair histories, onboard video, imagery of the damaged components, and a police accident report. The two vehicles with reported separation have different vehicle histories. One vehicle received prior service and the other was involved in a previous collision. In both instances, the vehicles operated for multiple months and thousands of miles of usage with no apparent problems between the previous service or the previous collision and the failures that prompted this investigation. Rivian recognized the subject toe link joint’s sensitivity to service procedures in March of 2025 in its updated service procedures. In January 2026 through recall 26V-003, Rivian extended the improved repair procedure to vehicles that received toe link service prior to the March 2025 improvement. ODI is opening a Preliminary Evaluation (PE) to (1) assess the sensitivity of the rear toe link joint to foreseeable road and service conditions, (2) compare the physical failure evidence from the two VOQs to identify apparent similarities and potential differences, (3) evaluate Rivian’s current toe link repair procedure, and (4) assess the in-field subject population’s toe links conditions. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Preliminary Evaluation PE26-004. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. Model years with a try.vin recall page link to that page's NHTSA investigations section.
What an NHTSA investigation is
NHTSA's Office of Defects Investigation (ODI) looks into possible safety defects in vehicles and equipment, often after owner complaints. An investigation usually starts as a Preliminary Evaluation, or as a Recall Query when it concerns whether an existing recall covers the right vehicles or fixes the problem, and ODI can upgrade it to a more detailed Engineering Analysis. A Defect Petition asks NHTSA to open an investigation, and Audit and Equipment Queries are administrative investigations into whether companies complied with federal vehicle safety requirements, such as reporting, recall and certification rules.
An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.
To see whether a specific vehicle has an open recall, enter its VIN at nhtsa.gov/recalls.
Rivian VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for PE26-004
Investigation details come from NHTSA's investigations file, which try.vin imports once a day. The investigation types are described from the U.S. Department of Transportation Inspector General's May 2023 report on NHTSA's Office of Defects Investigation, NHTSA's petition rules (49 CFR Parts 552 and 557) and NHTSA's Office of Defects Investigation procedures. How try.vin reads NHTSA investigations.