Battery dies? again
#1
Battery dies? again
I have an 08 G35 sport.....I have owned it for less than a month. Went to use it a couple days after purchasing and the battery was dead. Not knowing how old the battery was I simply replaced it. drove it a few times and it was ok......the car sat for a couple days and the battery is dead again. No warning lights, no dim lights, everything is functioning....
Help please? I have done some reading and this seems to be a reoccurring problem.
Thanks,
Jet
Help please? I have done some reading and this seems to be a reoccurring problem.
Thanks,
Jet
#2
Join Date: May 2017
Location: Washington State
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Did you clean the terminal posts THOROUGHLY when installing the battery, down to clean shiny metal? Do you have any aftermarket electronics including stereo? Do you have ANY electrical components inside the vehicle that are currently non-functional? I would start with all those items as well as checking for voltage with the engine running.
+ to - with the car running should be 14.5vdc
+ to - with the car running should be 14.5vdc
#3
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#6
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Electroical Gremlins
Just because you buy a new battery doesn't mean it's going to work as intended! Drive your G back to where you bought the battery and have them check it, sitting for a few day tells me it could have a dead cell! If the battery isn't the issue have them check your charging system, alternator s/b putting out 13.5 volts...much less replace it! Is your drive belts tight enough or do you hear them making noise? How about lights left on when everything is closed up and shut down...under doors or trunk? Lots of things to check...Gary
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#8
Join Date: Mar 2011
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Front and rear cameras, tire pressure for all four tires can display on screen,folding side view mir
Just because you buy a new battery doesn't mean it's going to work as intended! Drive your G back to where you bought the battery and have them check it, sitting for a few day tells me it could have a dead cell! If the battery isn't the issue have them check your charging system, alternator s/b putting out 13.5 volts...much less replace it! Is your drive belts tight enough or do you hear them making noise? How about lights left on when everything is closed up and shut down...under doors or trunk? Lots of things to check...Gary
What he said!
Test battery with a battery hydrometer
Measure alternator output voltage with a digital multi-meter across the battery with the engine running.
Put the meter in series with the battery cable to measure any possible current draw with the engine off.
Telcoman
#9
Check all the connections like everyone mentioned and the battery voltage with the car running a load.
You can do a parasitic draw test by connecting a multimeter in series to the negative cable in amp mode. If you have high amperage stary pulling fuses to see what circuit makes it drop. You can also test each fuse for volage and then calculate how much draw there is.
You can do a parasitic draw test by connecting a multimeter in series to the negative cable in amp mode. If you have high amperage stary pulling fuses to see what circuit makes it drop. You can also test each fuse for volage and then calculate how much draw there is.