Owner's Manual
Page 141
... it checked. Driving with the voltmeter reading in the lower warning zone could cause bulbs to burn out (especially headlamp bulbs), various vehicle modules to shut down (due to overload protection) and the possibility of a battery acid leak. Driving with the voltmeter reading in the upper ...red zone while you may have a problem with the electrical charging system. If this light stays on briefly to power certain electrical accessories, like ABS. (If this section.) If you idle the engine for a while, the voltmeter reading might move into the red zone. Have it checked...
... it checked. Driving with the voltmeter reading in the lower warning zone could cause bulbs to burn out (especially headlamp bulbs), various vehicle modules to shut down (due to overload protection) and the possibility of a battery acid leak. Driving with the voltmeter reading in the upper ...red zone while you may have a problem with the electrical charging system. If this light stays on briefly to power certain electrical accessories, like ABS. (If this section.) If you idle the engine for a while, the voltmeter reading might move into the red zone. Have it checked...