Two thoughts on this.....
1. Possibly a flood car, there are many "floating around" your area.......LOL! All kidding aside is there any rust on the seat mounting brackets or on any of the screws under the dash??? Water damage is hard to detect and will screw with your electronics. Possibly a sea monkey infestation in your electrical system!
2. Check the lemon law buyback law for your state if you have major concerns, that many electrical problems in a "short" period......SORRY....may qualify you for a dealer buyback. I have seen it done for less than this!
Bill