Battery Light On But Car Runs Fine Uncover the Cause

1. Alternator or Voltage Regulator Problem · 2. Loose or Corroded Battery Cable · 3. Old, Discharged, or Weak Battery · 4. Faulty Wiring in the ... Now the car starts and runs fine however, when the batter light is on I ... battery fine when the engine is running, but under full load (radio, The light is an indication of a problem with the battery or charging system, hopefully a minor one. These can include loose or corroded battery cables. Or if it starts in the morning with no other issues then am I fine? I haven't tried to start my car since I got home around 6 this evening. Just ... Normal because the charging system detects via sensor that the battery is fully charged, and there is light load on the alternator.. so it sets ... Troubleshooting Tips for Battery Light On But Car Runs Fine ; Battery Light On, Loose or Corroded Battery Connections, Check battery connections ... A battery warning light means that, for some reason, your battery is not recharging and it's only a matter of time before driving your vehicle ... edit: and a battery doesn't "charge straight up" when the car starts, the alt just starts supplying the 14.4 volts a car runs on and the battery ... Clean corroded connectors, replace broken connectors and wiring. Make sure all fuses and relays are properly seated, check for any blown fuses. It's more than likely that your alternator is bad. As has been said, that idiot light is an under-voltage indicator. The car will run fine for a ...