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Thread: Battery light stays on - checked everything
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Old 07-15-2022, 07:39 PM
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greasefingers greasefingers is offline
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Location: Northern VA
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greasefingers greasefingers is offline
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greasefingers's Avatar
 
Join Date: Aug 2004
Location: Northern VA
Posts: 1,944
greasefingers is on a distinguished road
When the battery light comes on it does not indicate that the battery is bad but tells you the charging system is not supplying enough power to the battery.
With the engine running at 2000rpm and no accessories on, the voltage at the battery should read about 13.9 to 15volts. Toyota does not specify and plus or minus range:-( which everything has. Your reading is 13.93v so the alt is great. Forget about the dashboard icon being lit. Here in VA one can not fail a vehicle inspection for a battery light lit.
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2003 4x4 Sport 4runner V8 with 287k miles and counting
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