I am storing a used (2003 I think) Club Car that my friend purchased for his kids for Christmas. My daughter and I took it for a test drive this afternoon, rode for 3 blocks, stopped for 10 min, then proceeded to return home. On the ride home, the car beeped several times and seemed to brake itself. I came to a stop, drove another few yards, and it did this again. This repeated at shorter intervals until we finally reached home. The vehicle is stock I believe except that it has a lift kit with large offroad tires. Any ideas? Bad controller, or controller too small? Any help would be appreciated. Thanks, Grant