I have a 2012 Town and Country and I disconnected my battery to clear a check engine light and when I reconnected the battery no dash lights would work and no instruments would work. The speedometer, tachometer, fuel gage and thermometer wouldn't work. I unplugged the battery and left it off for several hours and plugged it back in and now some of the gages work like the speedometer and fuel gauge. Nothing else works and no it says ERROR where the odometer miles should be. I have cleaned the battery terminals and have left it unplugged overnight and that didn't resolve anything. I checked all the fuses and nothing is blown.