I’m in my 4th MS and have had aftermarket stereos/amplifiers in each. Never had a problem until my 2020 LR+. I am currently on my second battery after only 2 months. I get several warning messages (simultaneously) and then the car won’t start and requires service. Each time I was told by Tesla that the 12v needed to be replaced. Has anyone else experienced this with a newer Tesla? What changed with the MS that an aftermarket stereo is now constantly draining the battery?