most of the problems are due to lack of maintenance. if one system fails, it stresses everything else, and it just spirals from there(because most people dont fix the issue when it arises). i think part of the reason i had no issues was because i was ontop of maintenance and upkeep. i was practically the original owner of mine since the mileage was so low at delivery, if something was out of place or didnt seem right i addressed it immediately