One problem related to software has been reported for the 2018 Jeep Renegade. The most recently reported issues are listed below.
The infotainment system is malfunctioning. It controls almost all functions in the car. While driving every setting it controls will randomly and suddenly switch to a different setting. You can not over ride it's random switching, even by turning it off. The dealer service manager has said the car is undriveable. If you did try to drive a large number of mechanical and electrical and software settings are switching as you drive. Image driving down here in 95/95 florida (temperature and humidity) while the car is turning on the heat full blast and the seat heater full blast, resetting waypoints, and instructing the driver to turn somewhere and watch out for a upcoming collision. The only fix is to replace the infotainment system and there are no parts available for an estimated 3 month. This happens when the vehicle is stationary or moving on city streets and on the highway. I have spoken a dozen times to fca customer care, case 76973156. The keep switching case managers. Right now there is nobody assigned. The car has only about 5000 miles on it. I have not included an attached file because it looks like you can not accept a video. Apparently this is a common problem (as service guy says) and therefore there is a shortage of parts. Service manager said that this system affects almost all functions in the car to the point that often when there is a failure the car has to be towed in.