Hey Folks. I have a 2003 Corolla that I have owned for about 3 or 4 months. 92k original miles. About a month ago It wouldn't crank on a cold morning. It wouldn't turn over, no lights, nothing. I jumped it off and stopped at an auto zone. They tested the battery, which tested bad. I bought a new battery, the expensive one with the 3 year warranty. Vehicle cranked right up and has been running fine until today.
Anyways, today I go outside to head to work and the car won't turn over, no lights, nothing. Checked battery on the voltage meter and it is going from 2 volts, up to 5 volts, and back down to 2 volts every 20 to 30 seconds. The key is not in the ignition. There are no obvious signs of any drains that I can see. All lights are off including the trunk.
The coincidence is that both mornings this happened it was below Zero degrees. Minus 3 this morning. Maybe in the extreme cold something is sticking causing the battery to run down overnight?
Any ideas on what to check next? Any help at all is appreciated.