Battery Light's Mystery Car Runs Well, Light Misguides

4 Things to Do When Your Car Battery Light Comes On · Check the purchase date of the battery. If it's older than 3 to 5 years, you may need a new ... Your car's computer system has many sensors and warning indicators. It is likely a computer system issue if anything else is fine. You need a ... 24.05.2024 - The dashboard battery light is not just a casual warning; it's a very important indicator of underlying problems within your ... When the car is running the alternator puts out somewhere around 13.8 volts. If your alternator goes bad then your car will run off the battery ... It's the alternator. Just take it in to any auto parts store & they'll check it to be sure. Battery light coming on is indicative of a failing ... The car runs just fine and the battery stays charged, but the light won't go away. Is there a process to resetting it other than fixing the issue? Since the battery isn't discharging while the truck is sitting probably the diodes are fine. Voltage regulator should not be very expencive, so ... But having the voltage gauge installed really is key to being able to drive in a car like this without worrying each time it comes on. Usually, ... Thats because when the car is off, the alternator isn't charging. It's supposed to do that when there is no current running from the alternator ... Either a connection or the alternator is slowly failing. Check the small wires as well. Found this; After firing the engine up, you should get ...