Hi Folks, We have a 2012 Camry Hybrid with ~165k on it. This morning, the 'Check Hybrid System' warning appeared on the dash with a few other lights: I downloaded Dr. Prius for the first time and used an old Bluetooth OBDII dongle: Does this definitively point to a traction battery that needs to be replaced? Or are there other things to be checked before making that decision? FWIW - After taking the above screenshot, I cleared a code P0a80 with Torque. The 'Check Hybrid System' and other warning lights cleared from the dash. I switched back to Dr. Prius, and now block 11 looks average, and block 4 looks low: Thanks!
Also - forgot to note that Dr. Prius life expectancy test showed ~25%. I have NOT yet run a full battery test, but will once I've got a few minutes to find an open stretch of road.
Corrosion of the pack's bus bars have been known to cause a 'bad battery' code. Replacing and cleaning up the connection can fix it. Got to pull the pack out to check though.
Thanks for the reply. I went ahead and pulled the HV battery following a youtube video. Looks like there is some corrosion, but nothing that seems extreme to me: I presume at this point it's worth a try to clean those bus bars and see if it helps, or replace with some nickel plated ones? If I don't have any special equipment beyond a pretty basic multimeter, I presume I should probably not attempt to balance the modules? There seem to be mixed opinions on 'rotating' the blocks - is that something you all would recommend? Thanks!
First, do not use the nickel plated bars. Dr. Prius has a video why on his YouTube channel. Second, my wife drives a 2013 Avalon. Its battery was upgraded with a Lithium pack last December. I don’t regret spending the money. It’s been flawless. Thanks Stephen
