Hopefully someone can answer this and thanks in advance. I have a 2018 RG Ultra that I installed the QD setup for the tour pack. The stereo wasn't working correctly with a flash drive(nothing to do with the tour pack). Took it to the dealer for my 1K mile checkup. They reset the firmware/put the radio back to factory specs. Problem is, now the check engine light is on. The light according to the dealer is being thrown because it can't sense the rear speakers. The dealer said it's because the tour pack isn't attached and it should go off when I attach the tour pack. It wasn't throwing the code prior to going to the dealer. Anyone else have a similar issue?