Skip the auto shop - Our mechanics make house calls

Q: Battery runs down after car is idle

asked by on

Battery runs down after car is idle.

A: Hi there! Your problem sounds like an issue...

Hi there! Your problem sounds like an issue with your charging system; more specifically, the alternator.

The alternator is a major component in the charging system whose job is to maintain the battery charge during vehicle operation. Something as simple as a blown fuse could impede the alternator's function, or the issue could be more complex.

I would suggest having an experienced mechanic, like the ones at YourMechanic, inspect the entire charging system to pinpoint the issue and suggest appropriate repairs.

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・Save up to 30%

Get a quote

What others are asking

Q: I changed the ignition and the key turns

Hello, thanks for writing in. If the ignition was installed correctly then you may have an issue within the fuse box. I have changed of number of these because of internal shorts. I will usually test the new ignition switch...

Q: When I start my car it doesn't start after the jump start it started but later it didn't and the battery was last replaced on 9/2012

As you may know when jump starting the car, the battery power provided is being supplied form the other car you are using to jump your car with. If the car does not start following the jump, this would suggest...

Q: Trouble with security system

Depending on whether or not the security system is aftermarket or not makes a great deal of difference when dealing with these issues. An aftermarket system comes with the chance that it was not installed correctly. As well as the...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...