NHTSA complaint #11751961

Owner complaint summary

When Highway Driving Assist / Lane Following Assist is active — confirmed by illuminated green HDA and lane assist indicators — the vehicle applies uncommanded steering torque, to the left or to the right, strong enough to force the vehicle out of its lane. This occurred on every drive, daily, from delivery on 7/2/2026 (approximately 23,200 miles) until the vehicle was brought in for service on 7/13/2026. The behavior was identical regardless of lane markings (solid, dotted, or absent) and road geometry (straight or curved), at highway speed and on local roads at approximately 30 mph. On multiple occasions the vehicle was pushed toward highway barriers (concrete median and metal guardrail, on both left and right sides) and into the oncoming traffic lane; avoiding barrier contact or returning from the oncoming lane required forceful manual correction, during which the rear of the vehicle oscillated side to side before directional control was fully regained. This occurred regardless of speed. Separately, the forward collision-avoidance / automatic emergency braking system failed to activate on multiple occasions when approaching stopped or slowing traffic, requiring hard manual braking by the driver. No warning lights displayed. An authorized dealer inspected the vehicle 7/13–7/21/2026: scans found no stored diagnostic trouble codes, road tests did not reproduce the behavior, and the dealer performed front camera and front radar ADAS calibration on 7/21/2026. I am currently monitoring the vehicle to determine whether the calibration corrected the behavior. A comparable loaner vehicle of the same brand exhibited correct HDA/LFA operation, which is how I confirmed my vehicle's behavior is abnormal. No crash or injury has occurred.