One of the original idiot lights, the symbol to the left indicates a serious Charging System problem. The vehicle should be brought to a complete stop as quickly as possible or the vehicle may simply stop running. Roadside assistance will be necessary.
In most cases, there are two possible scenarios: a bad battery, which will not allow itself to be charged, or a failing alternator, which is no longer sending enough charge to the battery. In either case, your vehicle will soon stop running. In some cases, a failing alternator will cause a weak battery to fail as well, and both will need to be replaced.
Note that if the word Main is seen beneath the battery image, the light is actually a Hybrid Battery Trouble Indicator. The vehicle’s hybrid battery must be serviced by your dealer or qualified service professional as soon as possible.
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