My 2012 plug-in was in the garage with nothing turned on. Was completely dead. Measured battery voltage--3.5 volts! Had battery tested and charged--was ok. Tested the discharge current--was 1.5 amp, reducing to 1.0 amp. Toyota service didn't know why this draw. (My son said he might have left the key fob in the car but that doesn't seem to make a difference in discharge current.) Now seems stable--voltage 12.42 volts. Anyone else experienced this phenomenon and discovered its source? Thanks, Tonus
