Q: Battery runs down after car is idle

asked by on

Battery runs down after car is idle.

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?
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 runs down after car is idle

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: My temp gage barly goes past 130

The thermostat most likely is stuck open and would cause the engine to run too cold all the time. It may eventually get to operating temperature but the engine will run richer until the temperature gets above 180 degrees. I...

Q: Hi sir, i am student working on project

Hello, thanks for writing in. The rate of discharge will depend on several factors. The amount of the load used to discharge the battery, the temperature, and the beginning level of charge, to name a few.

Q: Whole car died, motor and lights and electrics

I am seeing lots of complaints of stalling in Jeep Cherokees over the past 10 years. Your issue seems to be electrical in nature since you are not only stalling but also losing instrument cluster power. All the supply power...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...