I know this is an old thread but I just went through the bad FM AM reception thing with a 2012 RS, I have LEDheadlight and LED DRL with Tint all around. Bought a new Pioneer and PAC unit to replace stock base radio. Reception was worse. They replaced the piece that powers the antenna with the one that came with the Pioneer radio. That made the reception worse so they re-ordered the stock power antenna pieced and everything comes in crystal clear now. What a difference.
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