2 days ago i bought my X6 into service because there was a lot of noise coming in through the doors. Since i was in there, i asked them to check the trunk lid liner to see if it was tightly screwed in. My new sub woofers were shaking it. Today i get a call from my Service consultant, saying that the techs that were checking the liner on my trunk also checked where the wires from my sub woofer went. They saw it was installed through the stock wires of my car, and they told me that if any of my electronics, i.e Idrive, radio etc were to malfunction, warranty would no longer cover it. I said to them they must prove that my sub woofers were the cause of the malfunction before they void any warranty, and the consultant said "yes, they would have to". When i got into pick up my car, and they gave me the report of what they did on my car, at the bottom it noted that the warranty for electronics were voided because of my after market sound system. My service consultant told me it was just a note, and the warranty has not actually been voided because they have not made claim through BMW yet. My problem is, non of the wires or cables went through the liner i told them to look at. Second i told them to check the liner and not my sound system or sub woofer. Do they have the right to look at something i clearly didn't tell them to look at? and has any one ever had problem with their electronics malfunction due to a aftermarket sub install?