Check engine light, power windows.

Check engine light, power windows. My check engine light has been on for a while, ive changed oil got it checked by auto zone and they said it was my cooliant temperature. and then my front blinkers work but my rear ones dont. and the middle tail light with work for the brakes but not the two outter, but the front blinker lights work as well. and my windows don roll down and fuses that were checked on drivers side when door opens, those were all good..