My radio speakers crackle & distort very badly--I've never played them loudly but can bearly stand to listen to radio?? Is there a fix w/o replacement?? Thanks

Sounds like amplifier about to die. Had mine diagnosed by Mercedes dealer and a $1500 price tag for new one. I declined.

Blown speakers in a 2006 should not be an issue, especially in a quality vehicle. You may just have a loose connection at the stereo causing the crackling sound. If you are not the cars first owner the previous owner may have been enjoying the bass a little too much and caused damage to the speakers, but I would check the connections first.