Cruise Control problems of the 2006 Kia Motor Sedona

On my cruise control when I set to certain speed, it will speed up, I had it set to 65 mph and it sped up by itself to 85 before I could get it to go off. I had to slam on the break to get it to go off. This has happened several times. Now the car will not start all the lights will come on, but car will not do anything. Checked fuses all good, ground wire was taken loose and paint grinder off and put back on, still won't start. It started not starting every now and then and now it won't start at all. I read where this is happening to several kia specifically 2006 .

The vehicle struts with less then 75k miles (warranty covers only to 60k miles) have poor suspension. The cruise control will not set at desired speed. Brake lights remain on even after the vehicle ignition is turned off; pumping the brakes will not release lights and could cause the battery to drain unless fuse is removed.

My kia Sedona is in the zieser service center again. I had to take it in for the horn and other concerns. The horn does not always work and this is a safety issue. The dealer said they can not duplicate, but when my husband and I drive the vehicle it does not work on a consistent basis. They have had to replace parts on this horn already on several occasions. And I have had to bring it back on several occasions since they can not duplicate at first. On my last visit the service dept turned the rotors for the brakes. I told them that it is now squealing since they did this and I wanted to know why. When they called to tell me my car was ready, they said I owed $25 to look at the brakes. I ask why and dave in service said that their tech took over 2 hours to look for problems and no one was going to pay them (meaning kia), so I needed to pay. I told them I wanted to know why I did not have a squeak before and then after they did some warranty work on the van I did have a squeak. I also stated that I have a safety concern about the car feeling like it is being pushed when you are slowing down and you get to 30-35 mph. He said this is normal. Lastly, the cruise control does not decelerate when going down hills (even a slight grade). It does not do this on a consistent basis. They told me this is normal, but when I drive it accelerates and if I have it set at say 40 mph I have to apply to brakes because I have had it accelerate past 60 mph. Again, I am very concerned about my vehicle and the fact that there are safety issues that I feel need to be corrected. Even though they state that the horn is working correctly, when I was driving this weekend, I was cut off by a car and when I went to honk the horn it did not work. And when I tested on several occasions, it did not work. My husband also was cut off (there is in intersection that is notorious for this by our home) and he could not get it to work.