So my service light has come on and I know that it is just a reminder to check the oil and stuff, but my owner's manual says I have to go into a dealer to have the light turned off and I really don't want to do that. Does anyone know the little trick the dealer does to get it to turn off? Thanks!

 

There is a little rubber plug in your speedo cluster.Remove it and press the button with the key on and it should reset it.

 

I believe this is what you are looking for:
http://www.obd2.com/accessories/data...eset_volvo.htm