Hey I have a 2012 Kia sorento 6 cylinder , push start . I recently got an after market drone remote start put in it , got it out the same day an the traction control light was on an downhill assist then backing into my garage my car would not go into reverse or park . My brake lights worked . I unplugged the battery an restarted my car an it would go into reverse no problems . I have my sorento in every day for a week , where I had had the remote start put in an they kept telling me they had fixed it . Only to find out it was in the same state again . Thought it might be the brake switch , had a new one put in . Still doing the same thing , sept now when I put on my signal light the doors lock an unlock while driving ....... Any suggestion on what may be wrong ??? Or how to fix this problem ???
Hi there,
This code indicates an issue with the brake light. Here is a list of possible causes.
P0504 KIA - Brake Switch 'A' / 'B' Correlation Read more: https://www.autocodes.com/p0504_kia.html
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