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They performed the same update on our Camry TRD today. Fingers crossed !! Dealer seemed pretty confident it will fix the problem. Thanks for the info !!

2020 Camry XLE purchased, Oct 2019 has had the battery drain issue 3 times. Dealership finally replaced the battery in December 2019 the third time I took it to them. 10 months after they replaced the battery Oct 2020, I go out to the car and experienced the same problem! Smart key System malfunctioning / Battery dead. I was livid, this was the 4th time this has happen. I called 1-800 Toyota spoke to a Case Manager and Supervisor while vehicle was being towed to the dealership. I was told by the Case Manager that they had just release an update to correct this issue. I told him to call my dealership and ensure that they had the update and would perform the procedure on my car. He did and once I got to the dealership they informed me they would replace the battery and complete the DCM Reset and Firmware Update EL1934 0.8 86741-#####. Toyota and the Dealership says this will fix the Battery drain issue. I am hoping this works. If you are experiencing the same problem, make sure that 1-800 Toyota documents your case and make sure your dealership is aware of the update.