During snowy but manageable conditions, the brake system on my 2021 RAV4 Prime SE failed to respond, and the vehicle did not decelerate when I pressed the brake pedal. A âPre-Collision System Malfunctionâ warning appeared shortly before impact. I was unable to steer away despite attempting an evasive turn. The vehicle collided with the car in front of me, and the airbags did not deploy. I was driving at a reduced speed due to snow. The vehicle ahead (a BMW SUV) began slowing. When I applied the brakes, my RAV4 Prime did not slow down at allâthere was no deceleration, no ABS pulsing, and no traction control intervention. The vehicle continued moving forward as if the brakes were not engaging. At the same time, I saw a dashboard warning indicating a Pre-Collision System (PCS) malfunction. I attempted to turn the wheel to avoid the collision, but the vehicle did not respond to steering input quickly enough to prevent impact. Despite the collision, no airbags deployed. The vehicle has been regularly maintained (oil changes every 5,000 miles, new tires last year, all service intervals followed), and there were no warning lights or issues beforehand. Safety Concerns: â¢Complete or partial brake failure â¢Electronic braking or stability control malfunction â¢Pre-Collision System malfunction â¢Airbag non-deployment in a front impact â¢Potential systemic issue affecting Toyota hybrid/Prime models This incident caused significant fear and distress for both me and my