I am hoping someone can help! Frustrating! I bought a Platinum Toyota Sequoia 2016 in November, 2016. Replaced battery after sitting for a while in November 2019. May 2020 it wouldn't start. AAA replaced it. Periodically drove it in Southern NJ through summer but at least 4x a week but small trips. Symptoms began: USB port for iPhone wouldn't work. Remote wouldn't work. While driving, the Navigation system while using bluetooth speaker for phone would simply die and reset itself. As these symptoms starting happening more frequently, it would culminate into the car stalling upon start up, and after 2 or 3 stallings it would turn over. Then that transpired into turning on the car ... it would not click, it would not do anything, the remote wouldn't work to lock/unlock doors - completely dead. NO CLICK. AAA came and jumped it and started right away on 3 occasions and it would run then symptoms would start. October drove to Phila (3 hour drive) then drove another 4 hour drive to upstate NY from there. So you would think it would charge if charging was an issue. Arrived at 4th stop in NY and the first UH OH sign was the close button on the hatchback would not work after car shut off. The car was completely dead. Local auto replaced battery and was fine for remaining trip and drive back. That week everything started again. Local auto and AAA both tested Alternator no issue. The replaced battery was a $150 DeKalb? battery top of line. Mid October less than a month later in November - same symptoms, but quick to not start. Towed to dealership an hour away. They ran diagnostics, replaced the batter - $400 later they are telling me everything is fine they can't find anything nor do they have an answer! $65,000 car - less than 50,000 miles - this is unreal. Drain test showed nothing. Recommending Remote Start that I bought with Toyota to be removed ($400 for that! ) - I asked about the anti theft system that runs in the background ...they told me the charge could barely charge a watch ..that that is not the problem. Gosh - I am hoping someone can help. My last resort is to get a Jump portable remote, watch it die again and try to sell. Ironically !! the first morning after purchase off lot - I had to call them to jump the battery but never had battery issues after that.