Car will be fine then all of a sudden, will act like battery is dead. This will go on a couple of days and then nothing. Then will happen again same way. Jusr replaced battery a month ago and all has been perfectly fine for a month now doing same thing again. Alternator was checked and is was fine at time of battery replacement. Only other thing is that the brake light stays on all the time now. Once in a while while driving will go off but comes back on. Help!!
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1993 Toyota Corolla
Question: Why does my battery keep going dead?
tamaples from Tom's Auto Clinic, October 26, 2011, 09:45Technician
Make sure your rear brake lamps are turning off after you park the car. If not replace brake light switch behind brake pedal. Corolla models had trouble with this.
Replyrellis2888, October 26, 2011, 13:15Rookie
Rear brake lamps are indeed turning off when I park. All lights go off which is what makes this so weird. So, are you saying that it could be a switch behind the brake pedal that is causing my battery to drain overnight and make the brake light on the dash stay on while I am driving? I sure hope it is that simple.
Answer #2tfaulk13 December 26, 2011, 16:05Enthusiast
Check your wiring at the connector to the alternator. On my 97 Corolla, I noticed that the lights were dimming as I returned home one night. When I connected my meter to check the alternator voltage it was at 11.8 volts DC. I reached down and wiggled the wiring that goes into the connector which plugs into the alternator and as I did it the meter began showing 14.23 volts DC. The next morning, I carefully removed the wiring from the connector and after a bit of soldering and installation of shrink tubing, the problem was resolved.