Car was sitting idle for six months and now will not start. . . An initial attempt at a jump start failed.?

Question

My relatively lightly used car, a 2003 Infiniti G35 with no mechanical issues to date, sat parked in a garage for six months and the battery is now dead, which is not surprising considering that the alarm system must have drained every last bit of juice. I attempted a jump start this afternoon using a friend's old Minivan with an old battery (possibly an issue?) and the car reluctantly started after a surprisingly long wait, but the car then soon died. After giving it another shot, the car again started after a lengthy wait and I drove the car around the parking garage for a minute or two while never exceeding ten miles per hour and it again would not start after I turned it off. What do you think is the issue? Would it be worth my time to now get a jump from a new car with a healthy battery and take it on the highway at higher speeds to see if it fully recharges? Any help would be GREATLY appreciated!

Answer 1

Once a battery has been fully depleted, particularly if it sits without a charge in either hot or cold weather, it is likely that there is one or more 'dead' cells in the battery. With this being the case, it likely will not take a charge from your alternator once you get the car running from a jump start. My recommendation would be to check the terminals for corrosion or a loose fit, if they are in good shape - buy a new battery. To prevent the problem in the future, remove the negative cable from the post when you park the car for an extended length of time. You mention that the alarm was active - of course, it will not work with the cable removed, so another option would be to start it every 5 to 8 days while it is sitting and let it run for about ten minutes.

Answer 2

Need to have the battery properly charged at a shop or Autozone and load tested--a car's alternator is not meant to charge a totally dead battery, only to maintain a slightly discharged one and could fry the alternator. If you do jump start it, leave the jumping car attached for 20-30 minutes to split the charging load between two alternators and run at fast idle --1200 rpm's or so. Computer may have to be reset as any memory will be lost--could take a several driving cycles to get back the presets or may have to have a shop reset it. Put some gas stabilizer like Stabil in the tank to help remove any varnish in the gas and do put fresh premium in it ASAP.

Answer 3

Go buy a new battery if it has been sitting outside in the cold dead for the last six months i doubt that it will hold a charge. you can try to jump start the car but if the battery is completely dead it may not work. it does not mean that it is not still just the battery

Answer 4

Sounds like that batt you have in the car is bad.The car's computer has to have a certain amount of voltage for everything to work correctly. If your batt is that far drained, the car will keep dieing. It either needs to be recharged or replaced.

Answer 5

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