Q: My battery light came on its making a real bad whinning noise

asked by on

My battery light came on and known it's Making a real bad whinning noise from under hood.

My car has 128000 miles.
My car has an automatic transmission.

Charging system output should be verified against factory specifications as the alternator may have failed which would account for both the noise and the battery warning light. It is also possible that the noise, and a charging failure, could be from a failed serpentine belt that is not properly driving the alternator. If the alternator tests bad, the battery should be carefully evaluated as well in a load test. Batteries are very important. If the battery only has a marginal pass on the load test you should just simply install a new battery to reduce diagnostic headaches. To have the alternator inspected, and replaced if necessary, please request an alternator inspection/replacement and the responding certified mechanic from YourMechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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. My battery light came on its making a real bad whinning noise

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: What is the correct pressure for my spare and how should I maintain it?

If you don’t have to use your spare tire regularly, it’s easy to forget it’s even there. However, you need to keep an eye on it. You should check the pressure regularly (at least once a month), and maintain it...

Q: How do you put a 1996 Dodge Dakota 5.9 360 motor in a 1999 Jeep Grand Cherokee Laredo with a 4.7 in it or a 4.0?

Hi there. You will have to swap the engine and transmission as a unit with the computer and harness to the other vehicle. There will be a need to fabricate engine mounts if the old mounts will not mount up...

Q: What does it mean when your charging system failure light comes on out of no where while driving?

Claimed by Tim J. Wolf

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.