Warning lights

• Why is my battery light on in my carSort a battery lamp by charging fault, belt, cables, and when to tow.
• Why does my car say engine power reducedSort a reduced-power message by scan, throttle faults, voltage, and when to tow.
• What does the exclamation mark mean on a carSort a dashboard exclamation mark by horseshoe, circle, or triangle before you add air or stop.