2003 service lights suddenly on

I Have a 2003 buick park avenue I bought from my boss, the check engine light has been on since I bought it a year ago, The airbag light would sometimes come on and then stay on. Today I went and started my car so it could warm up and the temperatures have been below zero last few days. After waiting a few moments for car to "boot" itself and some lights on the dash to go out I noticed that the Check engine light (not a surprise) the air bag light (again not big surprise) and the Service vehicle soon light (big surprise) were all on. I was wondering if anyone had any information as to why they all would be on now and how I can fix it

Because you have multiple problems and have not fixed them.....

Air bag light and check engine light are two separate problems.......one deals with the air bad system, and the other is an emission problem...

Service vehicle soon, is another separate problem......more often than not, one of your light bulbs is not functioning correctly(side marker, directional, park lights, etc.).....