1. rear wiper quit working several years ago. sluggish and now froze up. hasn't worked for a long time. 2. replaced radiator several years ago. replaced thermostat several times over the years. then... 2018, september,-- disappearing coolant from radiator for last 6 months with no obvious leak. car over heated in august but no obvious leak. kept refilling... 3 days ago bottom thermostat housing sprung a big leak and car overheated major. replaced thermostat, and full thermostat housing. internet recommends updating software because of overheating, but is priced at about $110 at all dealerships.