I have a 2004 Acura TSX. I just replaced the battery. I have noticed that the dash lights are flashing that are located in the middle part of by my radio and heating and air controls. At night time they will flicker on and off, not all the time but sometimes. Also, my heated seats! Ah, well my driver seat heater is only heating on the part where my back rest and the lower part being sat on doesnt even heat up any more. The passenger side seat doesnt even get that warm even when on high also the back part of the seat where you rest your back has never heated up. I have no idea so any suggestion would help a ton! I would like to know what to start with first. Oh last thing my check engine light and my maintenance required light is on and i had them run a diagnostic test on it and they said that something with my exhaust is under threshold. Please let me know if you happen to know anything!

Thanks!