My 500C is 8 years old with just over 50000km. Today the Fiat Code System Failure light came on and my key fobs suddenly would not lock or unlock my car from the outside. If I sat inside the car with the door closed they would then work. I tried the key in the ignition and turning them from “start” to “MAR” a few times and with both key fobs. They do work now, however, I have to stand right up to the car and pointing directly above the car door handle. Do I suddenly need new batteries in both fobs? Just seems weird that all of a sudden they both don’t work.