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greg 12/22/2012
2001 BMW 540i Base 8 Cyl 4.4L - Engine
Will a car run ok with a failing battery?
'98 Subaru forester
1 Answer
  • Bill
    Bill 12/22/2012
    When a battery wears out it puts upon the alternator to continue to run all electrical systems by itself, Generally if all your operating is the engine it will run OK, it's not until you start turning on accessories like A/C , heater blower, headlights, etc. you will find the alternator not equipped to handle all power needs and this is where the battery comes in. So OK is a question of opinion and not a positive supposition.

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