Lose Power Steering problems of the 2011 Jeep Patriot

Problem recurring on highway and city streets. At all speeds from idle to 75 mph. The latest was on highway driving 75 mph car dropped down to 30 mph and then stalled causing me to lose power steering and braking and almost an accident. The problem is well known to the Jeep manufacturer as stated by dealership. They said the throttle body/ software is the issue and occures in models from 2008 - current then verbally quoted me $650 for repair. I then researched online and found more than 2500 people with the issue and that's just people looking for help.