I have the same issue. Front Caliper replaced, that did not fix the problem. He said it was brake switches, replaced, did not fix the problem. Dealer said it was the rear calipers, replaced, did not fix the problem. Dealer now says it is the ABS system. It is a shame that KIA dealership cannot fix their own cars. Customers now are more informed that ever. Dealers fixing whatever they think is only getting the customer frustrated. I still think that the ABS system will not fix the problem. They need to reach out to KIA in KOREA to find out what is going on or talk to other car dealerships to understand what is going on. KIA owners cannot be having the same issues that KIA dealership cannot resolve. You would think that they are the experts. Alternatively, put the cars issue on a recall to figure out what the issues are since the cost runs into thousands.