What does the alternator warning light mean?
When a dashboard warning light turns on, it’s time to start paying attention to your vehicle. The alternator light will either be a battery or an ALT, both can indicate that your alternator isn’t working properly. If it’s not working, your battery is going to die from the power required to drive your car.
What does power system urgent mean?
It would mean that your battery is running low. Have your charging system checked out at a good shop or a dealership. This is not something you want to ignore. You could be stranded and not be able to start your car or keep it running.
Is there a warning light for alternator?
What the alternator warning light means. When you start the engine, the car will check to make sure the alternator is outputting the correct voltage. This warning light will shut off after a few seconds if the computer has determined that the alternator is functional.
Why does the alternator warning light come on at full brightness?
Yeah this is full on irrespective of engine speed. You mentioned a fuse in your OP, the warning light will come on at full brightness if the fuse that powers the Alternator warning light blows or the wiring somewhere between the fuse and the warning light goes open circuit or the fuse is ok but loses the supply to it.
When does the alternator turn on the idiot light?
When the engine starts and gets up to a high enough rpm for the alternator to start putting out voltage, there is a diode inside that takes some of the output voltage and featured back to the terminal that goes to the idiot light.
Why does the battery warning light go out?
OEM systems feature a sense circuit to detect that the alternator is putting out a few volts but that is all they do. The circuit between the alternator and the battery can be broken and the warning light will go out, telling you that everything is ok when it is not.
Why does an alternator go out without the engine running?
If the monochrome CWLs worked in the same way, the light could go out without the engine running which would be very confusing. So the monochrome CWLs use sophisticated techniques to analyse the voltage being measured and decide if the alternator is working correctly before turning the light off.