2023 Rivian R1S Brakes Problems

“Stopped at McDonalds drive through waiting to order with my foot on the brake and the vehicle lunged forward rearending the car stopped 5 feet in front of me ordering. I was trying to brake but it kept pushing the car in front of me then careened to the right hitting a sign and a parked car. I kept pumping the brakes and I thought it was going to run into a building when the vehicle finally stopped about 30 feet from the 2nd parked car it struck. …”

“I was at 44% state of charge and the ambient temp was around 65 F. While taking a turn at an intersection, the vehicle reduced regenerative braking(regen bar on the vehicle was greyed out) had I had quickly break as the car started to coast. This only lasted for 8-10 secs and the vehicle had regular regen breaking. Rivian don’t have blended braking, so if that had happened in different situations that needed much faster reaction time I would be in trouble. …”

“Immediately after purchasing the vehicle, I got error codes thrown to service the suspension while driving to my house, specifically at 15-20mph over traffic calming bumps. This fault cleared immediately the first few times. On July 25 I submitted a service request as my family headed out on a two week, 900 mile trip. The service suspension fault had returned and disabled my ability to change modes/ride heights, blind spot sensors and cruise control, all of which I was counting on using during trip. …”

“On our drive back from Yosemite, we began descending from Groveland, CA after leaving the Rivian charging station. Due to heavy rain, the car ahead of me was moving cautiously, limiting my speed to about 20 mph while maintaining a safe distance during the descent to Moccasin, CA. Thanks to the regenerative braking, I didn’t need to apply the brakes, as the car automatically slowed when I wasn’t pressing the throttle. However, my windows started to fog up, so I turned on the defoggers. Shortly after, I noticed the car’s door locks repeatedly unlocking and locking by themselves. …”

“One fine morning, went to start the car and the car threw a bunch of error messages related to servicing 12 V battery system and dis-engaged the parking brake that lead the vehicle to start rolling down the driveway. The message on screen warned of applying brakes, and luckily circumstances were safe around the car, and I was able to apply brakes and was able to reboot the car and systems restored. …”