I have an Avic d3 thats about 2 1/2 years old in my truck. The past few months i've noticed I have to turn the volume knob more and more to get it to go up or down. Its to the point now where I have to do about 8-10 full rotations just to get it to go from 5-20. Sometimes it even goes down 1 or 2 when you're trying to turn it up. What could be wrong and how do I go about fixing it. I'm assuming theres no warranty anymore. Its sooo annoying! Thanks.

the knob its self is probably worn out, and needs to be replaced, yea the warranty is only good for a year, and a radio repair facility(pioneer) will have to do the repair(unless you car replace parts on a circuit borard)