ken0723

Sorry, I should have posted in correct area. Newbie mistake.

My 2020 Rav4 (purchased in may, 2020) has had this dead battery issue happen 3 times. The first time in Oct, they simply replaced the battery. That battery lasted 3 weeks to the day and was dead again. I noticed the car sat 22 hours without being run. Toyota service claimed they had no fix for it (Nov 9), but wanted to know about any unusual circumstances ( such as keeping my keys too close to the car or if there were any commercial radio antennas nearby). They even suggested parking my car elsewhere!! Like I was going to take a bus or something to where I park my car. I made sure the car was run every 12 hours to keep the battery from draining, that worked for over 2 months till it was dead on a snowy morning. I took it in, and they finally admitted to the EL1934 firmware update. I hope this is the end of it. Just lucky they had the fix the day I arrived. How long have they known about the firmware fix? It seems they are waiting for people to come in instead of letting us know. Would the entune update have anything to do with the battery issue? On 2 occasions, I updated entune and within 3 days my battery was dead. That wouldn't effect the DCM would it? Thanks