Last week I stated my displeasure with Chrysler tech service when I complained that the button to the left of the speedo would not operate the trip odometer, the FFS system, or check the oil from inside. Tech service said the button had become corroded and to push the button 20 times a day for 6 months. stupid? Followed the instructions and in a week all is working perfectly. Only problem with X-fire is the backwords window switches. Build # in the 3000s