My mechanic says that the alternator must be charging but why is the light on.
2012 ford f150 battery light comes on.
The dealer agreed to replace the battery and the cable end which they did.
I had the battery light come on my f 150 i have put a brand new battery in and all is fine.
However the battery indicator light has come on just for a quick moment today and cleared when i accelerated.
Part 1 of 3.
They told me my battery was bad so i replaced it.
Asked by bob nov 03 2016 at 12 02 am about the 2008 ford f 150 xl supercrew sb.
It had battery corrosion on the positive side of the battery and on the battery cable end.
If the battery light comes on while the engine is running and the vehicle is being driven this indicates a problem with the charging system.
React to the battery light.
Turn off everything that draws power.
Every thing was fine until today when the battery light came on.
When you first turn on your car with the engine off the battery light will illuminate and this is normal.
Asked by guruh7wcp aug 10 2019 at 04 25 pm about the 2012 ford f 150 xl lb question type.
Maintenance repair the battery warning light comes on after about 30 seconds after i start my truck.
When engine is off the volts drop to about 12.
The light was still comes on then they told me my alternator was bad because it was only charging at 13 5v they were not able to find an alternator for it.
The battery light is on but the voltmeter says 13 5 to 14 5 volts depending on the engine revs.