2010 Kia Sedona Cruise Control Problems

While driving at 65 mph with cruise control engaged, your vehicle suddenly accelerated on its own. When you pressed the brake pedal, the brakes didn't respond, and the emergency brake also failed to stop the vehicle. You were only able to stop by turning off the ignition. After exiting, flames were spotted under the front of the vehicle, which required the fire department to extinguish. The cause of these failures was not determined.

While driving at highway speeds (around 70 mph), your accelerator suddenly stops responding and you feel a mild popping sensation. The engine won't rev no matter how hard you press the gas pedal, and your car gradually slows to about 10 mph on its own. Turning the car off and restarting it fixes the problem temporarily, but it happens again randomly—sometimes days apart, sometimes multiple times in one trip. The issue appears to be a fuel or engine control system malfunction that may require diagnostic testing and potential replacement of the throttle body, fuel injectors, or engine control module.

Your vehicle experienced unintended acceleration even after you pressed the brake pedal, causing it to crash into a tree. The problem happened without warning and recurred months after being repaired at an independent mechanic — when you shifted gears, the engine revved unexpectedly. The issue may involve the throttle control system or brake system not responding correctly, and a mechanic will need to diagnose whether the problem is with the electronic throttle, brake pedal sensor, or related components.