hi, first im from finland, so im sorry my english language skills.

I have a V40 1.8 2003 model volvo with many electrical problems.

-brake lights dont work
-central lock doesnt flash sidelamps when i open, or close doors
-heater dont work
-seat heaters, a/c and other buttons doesnt work when heater position is on, but they work when heater its off.

All problems came in same time when i start my car in this morning
i already check fuses, relays and battery voltage but they are fine, any ideas where to look this problems next?