NHTSA Complaint #11437063 — 2019 MAZDA CX-5

There was a warning "chime" and then this message appeared on the instrument panel. "Front Radar Malfunction". The car was in the left lane on the PA turnpike going approximately 73 miles per hour. The car immediately began a rapid deceleration after the warning "chime". Automatic braking activated. The driver could not accelerate. Traffic was heavy with a trailer truck to the right and cars behind. There were no vehicles in front of the decelerating car. The vehicles behind were able to slow and avoided collision. We were forced to pull over in a very narrow center medium next to a large concrete divider. It was a very dangerous place to stop. The engine was turned off for approximately a minute. When it was started there were no messages and the driver had full control of the car. The car is available for inspection. The dealer will be contacted tomorrow. The car has been in service for 23 months and has been driven 12,200 miles. The road surface was wet from recent rain and the car had been driven through a downpour with water pooling on the road approximately 15 minutes before this incident.