2005 Montego Error Messages and gauge problem
 

I have a 2005 Mercury Montego that is showing error messages on the instrument cluster, fuel flow error and an odometer data error, the tach and speedo is not registering when driving, the check engine light, battery light and ABS lights are all lit and the car will not communicate with my scan tool. Car will run but needs to crank over a little longer to start now, tried cleaning the battery terminals thinking maybe it is a grounding issue, dealer has changed out the instrument cluster before, car is awd and has almost 125,000. I am really stumped on this one and any help would be greatly appreciated. Thanks