NHTSA Complaint #11676769 — 2023 BMW IX

On November 16, 2023, I was driving the vehicle in the far left lane of the freeway when, without any warning, the vehicle lost propulsion and would not accelerate. It also lost power assisted steering AND power assisted braking. I had to decelerate with no power brakes while attempting to safely cross 3-4 lanes to the nearest freeway exit with no power steering, while maintaining enough momentum to not get stuck in the middle of the freeway. After it lost propulsion, the several warnings flashed on the screen noting that the vehicle stabilization system was disabled, "vehicle may roll", the tire pressure monitoring was disabled, and the restraint system monitoring was disabled. I managed to steer the vehicle safely to the bottom off the offramp but had to bring the vehicle to a full stop. As a result, I was stuck blocking traffic at the bottom of the offramp. I attached a few photos showing what was happening but have additional video documenting the loss of power steering and power brakes but they are too large to attach here. The screen stated the roadside assistance feature was unavailable so I used the emergency button on the interior roof, which connected me to BMW's call center. The representative requested that the fire department assist with moving my vehicle out of traffic. We had to towed to the dealership (see attached invoice). We were told it only needed a software update which was then done. We still kept getting the same high voltage warnings, leading to 3-4 additional repair invoices. Finally BMW offered another software update in May 2025. We still receive high voltage warnings, drivetrain warnings, and chassis warnings and are afraid it will shut down again on the freeway. Software updates seem to be a bandaid.The loss of power braking and steering while doing 70 mph was a terrifying experience that could easily lead to serious injury and death.