electrical
 

2006 G35X Sedan - Went to lunch today...all was well. Get the light waiting on it to change...all is well. Light turns green and my car would not GO! it was like it was in drive and gas pedal wasn't being pushed so i just idled down to the next turn off. As i turned into parking lot the car woke up and took off like normal. Parked it while running and sounded smooth. Turned key off to look around and when i tried to start the car I had Zero power...could not get windows up...key fob would not work...trunk button wouldn't work. Messed around with all the fuses and nothing blown. Multimeter showed 12.56 volts. this went on for about an hour and then it started right up. Started to roll out and it did it again...just died! Messed around with battery cables...got it fired up and back to work. Cleaned the terminals really well. Drove home with a knot in my stomach of fear it would do it again but i made it...any ideas? This has never happened before! thanks!

Test battery with a battery hydrometer

Attachment 180102

Possible defective or shorted cell?

Replace battery

Telcoman

I'm guessing battery issue, or poor/corroded batter terminal connections