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Car battery light comes on while starting/idling

  

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Hey guys,

my battery light in 2006 corolla started coming on suddenly when I start the car or I am idling, but goes away when I am driving normally. I got my battery tested it’s perfectly fine. On testing the alternator, it says there’s a problem with alternator regulator. Should I change my alternator immediately? I am currently on a week long road trip, can it survive the week?

 

 


3 Answers
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The alternator recharges the battery, and runs all your accessories.

You should replace it if you don't want to get stranded.


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+1 @mmj

You really don’t want to risk getting stranded somewhere ~ 5 hrs away from home.

Worse, if you’re in the middle of nowhere with no civilisation to ask for immediate help. 


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If it’s only the regulator, you can try only replacing the regulator or going to a good mechanic to do it. You don’t wanna gamble with that. If you want you can try replacing the whole alternator which may be more costly. But I would suggest to go to a good mechanic who can fix the regulator. 


I see. I am just a little worried as I am on road right now and it’s a 10 hr drive. Can’t even turn back and go home it’s 6 hrs away. Can i just drive on? Can get someone in the morning.


Cars haven't had regulators in decades. Certainly not user replaceable ones.


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