I am submitting this formal safety complaint regarding my 2025 RAM 1500 Limited, which I purchased new in November 2024 and currently with approximately 9,000 miles. The vehicle has exhibited repeated, dangerous failures of its advanced driver assistance and braking systems that place both the driver and public at serious risk. Summary of Safety Incidents: First Incident: While driving at approximately 35 mph, the vehicle abruptly and uncommandedly stopped, with no driver input. Fortunately, there were no vehicles behind me at the time, or this could have resulted in a high-speed rear-end collision. Second Incident: Roughly 400 miles later, while stopped at a traffic light, the vehicle displayed multiple warning alerts and shut itself off completely. Upon restarting and driving approximately 50 yards, the braking system failed for about five seconds, rendering the truck unable to stop. This failure was later replicated by the authorized dealershipas service team, who then informed me that the vehicleas CPU had failed during repair attempts. The vehicle has now been out of service for over 50 days, and the dealer has returned it to me twice in an unsafe condition. Stellantis, the vehicle manufacturer, has acknowledged the problem but has not provided a resolution.