Battery light on dash on
I have a 2016 Tiffin Open Road with a Ford F-53 chassis. My battery light on the dash came on. I turned the vehicle off and turned it back on. The light came back on after about two minutes and stay...
Forum Discussion
wa8yxm wrote:
The Battery light is not really a battery light. It indicates the alternator is DRAWING more power than it is generating (usually at least) ...
Not quite that simple any more ! In general, the statement is correct, but there are a lot more details to it (more correctly, the alternator is not putting out sufficient voltage to satisfy the PCM; the PCM tells the dash to turn on the light).
Check ALL connections at the battery and the alternator for clean and tight.
On any light/medium duty vehicle built in the past 10-15 years, You should see more than 14.0V at the battery shortly after start up. If you drive for 10+ minutes and check the voltage, it will be closer to 13.2. THIS IS NORMAL OPERATION.
If the battery light is on a STAYS on after multiple re-starts and driving, then you DO need a new alternator.
12.5V on the battery after resting overnight and before starting is a little low. I think I would be more concerned about that !
