NHTSA complaint #11455355

Owner complaint summary

In Jan 2022, the air bag system error light lit up at start-up and remained lit. A first-available dealer appointment was made for 1/28, two weeks away. During those two weeks, the car started to issue a burst of random alerts during cold startup - driver door contact switch failure, cruise control (ACC) failure, start/stop system failure, and the rear driver side window would roll down several inches. Shutting off and restarting the car solved these alerts. The car was inspected on Jan 28; the dealer confirmed a faulty wiring harness in the driver side door. They also confirmed the random alerts were the same cause. The dealer stated that the driver side air bag was nonfunctional, but the rest of the air bag system was OK. A replacement part was ordered with an estimated delivery of 2-3 weeks. As such, we chose to keep driving the car. Over the ensuing weeks, the random alert sequence got more frequent and started to show an electronic parking brake alert and engage the parking brake at startup. It then began happening on later starts when the car was fully warmed and would resume after the car was shut off and restarted. Finally, the alerts started to happen while moving, and instead of just a single burst, became a continuing sequence. The alerts are a rapid-fire volley of warning dings/dongs and accompanying messages in front of the driver. At the same time, the rear driver-side window is moving and the door contact switch is clicking randomly in the driver's left ear. It is a startling volley, which combined with the other weird sounds, is a disorienting and panic-inducing 360-degree assault on the senses. After no word from the dealer. I called on Mar 4 and was told the part was on a nationwide backorde, with no ETA. I did some research and found numerous reports of the problem getting worse over time and the parking brake engaging while moving. As our experience matches the trend, I feel the car is no longer safe and have parked it until it is repaired.