Skip the auto shop - Our mechanics make house calls

Q: Battery keeps dying on my car

asked by on

Recently I went to start my car and the battery was dead and couldn't be charged, so I replaced it with a new one. A couple of days later, the new battery was dead, too. My car has been at the dealership for several days now and they can't find anything wrong. They checked the alternator, the starter, fuses, etc., and the battery keeps going dead. Now they are checking each individual wire for problems. What could this be?

You have what is called a parasitic draw. The vehicle has a shutdown protocol it goes through to power all of the computer and accessories off. Something in the vehicle is failing to shutdown, which means they need to pull fuses out one at a time until the draw goes away. Unfortunately, sometimes this could be a lengthy repair to find the exact draw. Hopefully the dealership is keeping in frequent contact with you, letting you know what they are checking.

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
  1. Home
  2. Questions
  3. Battery keeps dying on my car

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: Loud bang when downshifting to passing gear

There are multiple possibilities that could be causing this issue. It is possible that your transmission fluid is low. It is also possible that your transmission fluid has never been changed. Either of these can be resolved by replacing the...

Q: The car is knocking

The knocking would have to be listened to by a mechanic before a diagnosis can be made, since different kinds of knocks mean different problems. The serpentine belt should be removed prior to a diagnostic test, to eliminate the possibility...

Q: Left brake light not coming on

The most common reason is usually the bulb. Other causes of the brake light not lighting is the wiring or possibly a fuse on that side of the vehicle. A qualified technician, such as one of our YourMechanic experts, can...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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.