Changed rear brake pads because of squeaking noise. after that brake started to lock and smoke coming out of rear passenger side. went back to my mechanic and was told could be problem with caliper. changed caliper and brake locked again with more smoke and smell of burn coming from rear passenger side. had car towed to mechanic and they adjusted brakes. took car to vw dealer and was told nothing was wrong with brakes. nothing happened for about 5 days and again burned smell came back, took car back to my mechanic day after since they were the ones that changed pads and caliper but brakes were not locked anymore. *tr