Mike XXX

I decide to register this account to reply to this thread. I believe I know the root cause now. I have a UX250h 2020 model. The same issue happens to me many times back in 2021 during winter time. I thought it was because I didn't drive it enough. Drove to the dealer performed the check and nothing suspicious. This year, couple days ago I experienced the same issue again after wash my car and I probably forgot to lock my car. This time, I decide to have my car towed to the dealer (I moved to another state), and they were able to find the problem! Google search L-SB-0036-21 DCM and checkout the pdf on the nhtsa website: My understanding is that the vehicle was sending the vehicle status to the server and to your lexus app. This process happens too frequently when vehicle is parked and drained the 12V battery. So you need to bring the car to the dealer and ask them to update the DCM firmware. I haven't got a chance to verify this solves the problem yet but I think it seems to be a reasonable root cause at least.