NHTSA Complaint #11662767 — 2019 RAM 1500

What component or system failed or malfunctioned, and is it available for inspection upon request? -The issue involved the truck’s parking and collision avoidance systems, which suddenly shut off. A warning message appeared on the dashboard stating "Service Shifter." This issue may be related to the electronic shifter module or associated control systems. The vehicle is currently available for inspection upon request. How was your safety or the safety of others put at risk? -The sudden deactivation of both the parking and collision systems while the vehicle was in motion created a serious safety hazard. Without collision avoidance functionality and the ability to securely park the vehicle, there was increased risk of unintentional vehicle movement or inability to avoid obstacles, which could have led to a crash or injury. Has the problem been reproduced or confirmed by a dealer or independent service center? -Yes, the truck was taken to an authorized dealer for assessment, and the issue was confirmed. Diagnostic tests found trouble codes starting with "U", which typically indicate a communication or control module fault within the vehicle’s network. The codes provided from the dealer are U0159, U0140, U0100, U0137, U0102, U10121, and U0101. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? -The issue has been inspected and documented by the dealership. There is no indication that police or insurance representatives have inspected it at this time, but the incident and diagnostics are recorded in the dealer’s service records. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? -Yes, a warning message "Service Shifter" appeared on the dashboard. This message coincided with the shutdown of the parking and collision systems. These symptoms appeared suddenly and without prior warning during regular vehicle operation.