I just purchased a 2007 Infiniti FX35. 2 days after I bought the car, I had to replace the battery. 2 weeks after replacing the battery, my instrument cluster decided to go crazy. My temperature gauge stopped working along with the speedometer and gas gauge. Also my mileage went to 999999. I checked all fuses and re tightened the positive and negative on the battery. After doing all of that, everything is working and is continuing to work. I have read online that it could possibly be that my cluster is going bad. If that is the case, does anyone know who I can send it to? Or does anyone have any other ideas of what it could be before I tear my dash apart? I would appreciate any feedback. Thank you in advance.