ctpres Report post Posted December 5, 2016 NHTSA is looking into problems with windshield wipers and contacted a member of another forum that had problems with his Thor Challenger. Since I had the same problem in question I did a forum search on two other RV forums and found over 24 reports with identical problem description - passenger side wiper arm rotating to far and in the worst case wedging under drivers side freezing it. In any case the end result is both wipers out of commission resulting in a dangerous life safety situation. Several owners reported same failure on replacement wiper assembly and I found one owner reporting failure of original and two replacements. So it looks like Thor is continuing to use bad stock and not really fixing the problem.So far there are several Thor products with the problem: Challenger, Outlaw, Hurricane, Windsport and Miramar spanning product years 2013 to 2016.If you had the problem described above or any other serious windshield wiper problem - please call or write Larry Long - your life may depend on it.Larry LongSafety Defects InvestigatorMedium and Heavy Duty Vehicles DivisionOffice of Defects InvestigationNational Highway Traffic Safety Administration NEF-140, Rm W48-2141200 New Jersey Ave. SE.Washington DC 20590202-366-6281 Share this post Link to post Share on other sites