2023 Rivian R1S Seat belts Problems

“I was headed straight but stopped so that I could move into a left turn lane. As I got into the left turn lane and was straightening up behind the person in front of me at almost a dead stop the R1S lunged forward and accelerated at a high rate of speed hitting the car in front of me (speed control issue already known on the R1T). The camera footage verifies it. …”

“On five separate occasions the airbag system on my car has become inoperable. Starting in July 2025 I noticed an airbag error on the display of the vehicle. I brought the car in for service and they replaced the steering wheel. The airbag error occurred again in August, this time requiring replacement of a different wiring harness. The error occurred again and again went in for service in November, this time replacing the front seats, seatbelt control modules, and the airbag module. This past weekend the air bag alert appeared again. …”

“Since the vehicle was new, I have had a problem with the air bag being off when a large person is in the passenger seat. I have reported this to Rivian. Rivian has sent a technician out to fix this. The technician indicated that he could not fix this as planned and would submit it to engineering as a safety issue. I have made multiple inquiries since then and received no information on when this will be resolved. I have also had 3 software updates since then and the problem has not been resolved. I have been able to duplicate the problem on another R1S. …”

“Vehicle routinely (>90% of the time) fails to detect occupancy of front passenger seat resulting in disabled airbags and other related safety systems. Our particular vehicle experiences the issue with passengers ranging from 150-425lbs resulting in a significant safety concern. Searching online indicates this is a common issue and repair requests are routinely denied with claims that it is operating correctly. Others have been told it is due to posture or seating position…I’ve never had a vehicle whose safety features were disabled due to poor posture?!”

“The contact owns a 2023 Rivian R1S. The contact stated that the vehicle was taken for service, and the service tech stated that all three rear seat belts had a wire that had been severed from the buckle. Additionally, the vehicle failed to detect an occupant seated in the rear seats. The dealer stated that the seat belt buckles needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, and a complaint was filed. The failure mileage was 29,000.”