Skip the auto shop - Our mechanics make house calls

Q: why does my battery keep going dead?

asked by on

In the past few days, my car battery kept going dead. I've purchased a new battery since then. Once I try and start the car it powers down on its own and i have to restart it. What could be the problem?

My car has 131000 miles.
My car has an automatic transmission.

The best way to diagnose the type of issue your Hyundai is having is by beginning with using professional level test equipment to verify that the battery, charging system, and starter are all functioning correctly.

These testers are widely used and commonly found wherever batteries are sold and vehicles are serviced. The other test you want to be sure to ask for is a parasitic battery drain test. Sometimes called a battery draw test, this test measures the electrical current flowing out of your car’s battery when everything is supposed to be shut off. A parasitic drain runs down your battery while your car sits at shut off. You’ll want to verify the problem before making any more replacements. A technician from YourMechanic can come to your car’s location to diagnose your car’s starting issue if you are still having problems.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: The anti-theft is always on in my 1999 Mercury Sable, can I turn it off?

The easiest way to disable the security to your vehicle is to remove both battery cables on the battery. Leave the cables off for about 12 minutes. Hook up both cables and make sure that they are tight. Take the...

Q: Air bubbling in coolant reservoir when car is starting /running.

When the radiator hose was broken, did the vehicle overheat and did it overheat bad enough to cause a failure of the cylinder head gasket? When the new hose is replaced, air must be purged from the system and you...

Q: How do I turn on the side view mirror defrosters?

The side view mirror defrosters increase your visibility by eliminating condensation from the side view mirrors. The side view mirror defrosters will automatically turn on when the rear window defroster is turned on by pressing the Rear Window Defroster button....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...