The contact owns a 2017 Ford Expedition. The contact stated that while driving at various speeds, while depressing the brake pedal, there was no resistance, requiring the contact to depress the pedal forcefully to slow down the vehicle, with the message ‘Low Brake Fluid’ displayed on the instrument panel. The vehicle was towed to a local dealer where the vehicle was diagnosed, and the contact was advised that the brake master cylinder, brake booster, and the vacuum sensor were faulty and were possibly the cause of the failure. The contact was informed that the brake master cylinder, brake booster, and the vacuum sensor needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 65,744.