Horn Assembly problems of the 2015 Honda Odyssey

It was little cold night. I drove on freeway for 40minutes with kids without central heating. When we got home, I wake them up. I found my young daughter at back seat, she couldn't wake up unusually. She was sleeping, leaning toward rt. Side cup holder side at back seat. I saw her face was so red like first degree burn and her hair was all wet and her body was so sweating. It was unbelievable that the whole surface next to rt. Back seat was extremely hot!!! even though the van engine was stopped. I immediately tried to her cool down. My kids told me. "ever since we bought this van, when the van's engine was turning on, back seat rt. Side body was always hot. " next morning, I took the van to Honda service. But it could not fixed for 3days and no one called me for updating info. The van is still in the service. One of technician told me from the service, it has been problems for 4years. I called Honda customer service, but no answer. I am trying to ask them buy back program. It is extremely dangerous for family with young children. This is not first time problem for this new van. I already had several problems. 1. It was not starting engine several times on the 1st week of purchase. 2. Brake was completely not moving more than one hour and not starting engine together on the 2nd week of purchase in the parking lot. 3. Clicking and clucking noise at rear of lt. Side with rt. Turning with brake all the times. 4. The van's horn by itself making noise for 20minutes on freeway driving. The Honda service couldn't find the causes. They just removed van's security alarm. Honda service didn't allow me for a rental van. I am expecting Honda's immediate and appropriate customer care for buy back program. Until now, this brand new van went to 9times services for 3months without fixing, 11days in the service, our family are very having hard time for normal living life with kids.