Q: Car battery dying quickly especially after longer driving

asked by on

My car has gone 50,000 miles. It has problems with the battery dying very quickly. It happens after driving a longer distance. I took it to the dealer and he said I wasn't driving the car enough and that caused the battery to die, which is not true as I drive it and it died exactly after a significantly long driving. He also said that I should rev the battery up by keeping the car idling for about 15 minutes. The car battery was fine however, when I let the car sit for about 15 days. Do you have some suggestions? Thank you.

It sounds like the alternator is not charging the battery, when are you driving long distances. Running all the accessories and then shutting it off can cause the battery to be too weak to restart the car. If the alternator is intermittently not charging, then you may have other wiring issues or just an intermittent problem within the alternator. Have the charging system checked by a mechanic after driving it and not shutting it off, to see if the battery is being charged. You may also have a body control module issue with extended storage mode. The dealer can check this mode with the special scanner and checking the extended storage fuse is not installed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Car battery dying quickly especially after longer driving

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: i have an infinity g37s.. sometimes when the car is at idle temperature gauge goes up but i drive goes to normal fans r workink

Claimed by Jeff Engstrom

Q: The car jerks and the lights flicker when idling.

I would recommend to start by checking the alternator connector, battery connections, battery cables including the wire to the main fuse/relay box, and grounds. If you hold the engine rpm to a stable 1000 rpm with the throttle, check to...

Q: Roaring sound in the engine.

Hi there. The sound that you are hearing from the engine could be coming from the transmission. If you have a CVT (constant velocity transmission), then they are common to make a sound when driving them. I recommend seeking out...

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...
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...