I think I my amplifier may have failed on my 2005 X5 3.0i due to moisture getting into the rear driver side quarter panel. The rubber grommet keeps moisture from getting into the body that is underneath the trunk lid came loose on the side that connects to the body of the vehicle. I think that this is where the moisture came from and has since been remedied. The rear driver side quarter panel is now dried out, but I have zero sound output coming from the speakers and I suspect that the moisture killed the amplifier. Just my luck, my warranty has expired.

I talked to the dealer, and they suspect the same, but I'm scared to see what the cost will be for the dealer to replace it. Does anyone have any tips on a do it yourself replacement. This is a non-navigation setup.

Thanks in advance for any information.