Q: battery light is on, but car is running fine

asked by on

My battery light is on. My car is running fine, does this mean that I have problems?

My car has 112000 miles.
My car has an automatic transmission.

The red battery light on a car is there to indicate to the driver that the battery is not charging. This light normally comes on when the alternator is no longer functioning. I would recommend having the alternator output tested with a digital multimeter by a qualified professional. If the alternator is not producing at least 14 volts, the battery is not being sufficiently charged. If this is the case, I would recommend having your [alternator replaced](. Consider YourMechanic as your alternator can be replaced from your home or office.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. battery light is on, but car is running fine

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: how difficult would it be to update the engine?

Hi there. This question would not be able to be answered for you without a thorough research into the two engine differences. The 5 to 7 year difference would mean the intake and exhaust along with the computer components and...

Q: Hi Robert, I bought a lexus 2002 es300 recently at an auction. Noticed that engine overheated. I'm seeing a gooey wax like substan

Hello, thank you for writing in. If a stop leak was used and it is creating a clog in the system, then a flush is where you want to start. Flush the radiator and do your best to clean the...

Q: I changed radiator in a 92 lexus ls300 now the tranny is slipping and i add fluid to compensate for loss.

If the transmission fluid level is correct, then the present slippage is merely a coincidence insofar as the timing of the radiator repair. But, you indicate difficulty determining the fluid level. The fluid level should be definitively determined first as...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.