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dano99487

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Get the dealer to replace the 12 vdc battery under warranty. It happens often with Ford hybrids that the 12 vdc battery goes bad while the car's waiting to be sold. Recharging it won't work. You've already done that when the car was running. It needs a new 12 vdc.

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RUN to a lawyer and try to return the car (you can't in FL legally). If the dealer is as wonderful as you claim, maybe you won't need a lawyer.

I suppose it is possible things could reach the point where that might necessary but it is very premature at this point. Since you purchased the car off the lot it is possible it has been sitting on the lot for several months without the battery being charged except for short test drives. See how things go after you get a new battery as lolder suggested.

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Most if not all Fusions are made in Hermosillo, Mex. After manufacture they may sit in a lot awaiting rail transport for an indefinite period of time only driven a few minutes to rail cars. Transport might take days or weeks followed by weeks or months on dealers lots where they may not be regularly run for at least 1/2 hour per month. The 12 vdc batteries discharge to low enough levels to damage them and the car then continues to have battery problems. The batteries recharge but are damaged and have only a fraction of their normal capacity which is not enough to maintain the electrical loads still present when the car is off. Testing them with a normal battery tester will not reveal the damage and the only alternative is to replace the battery. Replacement OEM batteries have a much better record. The owners guide recommends running the car ( "on" ) 1/2 hour each month to keep the 12 vdc battery charged. The HVB can be recharged in several minutes.

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I can't find it in the Owners Guide now either. It does say to run the car 10 minutes each month to charge the HVB and that that is not enough to charge the 12 vdc and to disconnect the negative terminal if the car is to sit more than 31 days. Running it 30 minutes should be enough.

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That's enough to keep both batteries charged. That's probably 10 minutes a day or 50 minutes a week. The minimum is 30 minutes a month.

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