Front Fadar fault on 2021 Haval Jolion 1.5T

My weekend started very slow, and I decided to wash my car. It was a clear and sunny day and me and my kids decided to wash the car. It was a funny day where we also started to play with water and spraying each other with water. We finished with the drying of the outside of the car and started to clean the inside of the car. We used the woofer and the cloths. The car was very clean as if it came from the car wash. I have saved very rands by washing it myself with the help of the kids, however the saved money ended up buying the ice cream for the day. We played nice music along the cleaning of the car and I ended up switching off the radio to prevent the battery from being drained very low. Finally we were done with the cleaning of the car and I started the car to move it to the garage and on the shade. I noticed that when I put in the reverse gear, there was a message coming from the radio screen saying "front Fadar fault" and on the other side the volume of the radio was very low even if the volume was higher. I concluded that something was wrong. I went to the manual of the car and it did not help and ended up going to internet for help but not much I could find. I thought to myself this could be due to the electrical fault of the car. Finally I went to all the connections inside the car. You cannot believe what I found to be the problem. During the vacuuming of the car it happened that one of my kid touched the plugs underneath the car seats and it disconnected. I connected them together and everything was back to normal and the volume of the radio was back to normal and the fault cleared. I was glad that I saved myself an amount of more than R2500 for diagnostic and repairs from the service center. I was so very happy that I could solve the problem.