@borski does the reboot routine except for getting out of the car. Follows all the steps except he remains seated. In my limited ownership time, I've only rebooted using the keycard method to see if the bass improved and it did the trick. When I picked up the car, no bass. Boosted to +6 and I said to my wife that no quality system should have to boost any frequency to the extreme limit (while also failing to deliver adequate bass). After the reboot, I have it at +4 and might drop it to 3. Been lucky so far but if a screen does black out, I'm trying the borski method.