Battery Light

[BSouders80]

At what voltage does the PCM kick on the battery warning? I was driving on highway at 65 mph and the battery light on the dash came on. Very random. I grabbed by tuner real quick as it shows the current voltage in the "about" menu. I was around 12.55 or 12.60 volts. I did look again later and I was closer to 13 volts.

Just curious when the battery light does kick on.

TIA

Brian

 

[BSouders80]

*bump*

 

[The Car Stereo Company]

not sure on that. however you should check the voltage and amperage coming from the alternator while it is running. also check the battery.

 

[MurderedOutSVT]

^ this


My first thought is alternator not charging correctly.

 

[P4SHOCAT]

Not sure what voltage the light comes on at. The battery should be charging between 13.5 and 14.5 while driving. 12.6 to 12.8 with a full charge. A voltmeter will be your friend.