Q: Battery will randomly die overnight

asked by on

The battery will randomly die while the car is sitting idle, overnight. Sometimes, it will be after a week or 2 of normal operation, and sometimes the battery will die for several days in a row. I have heard electronic "clicking" when the car is off. Was thinking it might be the ignition switch going bad. It sometimes takes 2 or 3 turns of the key before the car will start, when the battery is charged. Once running, the car stays running. Has this issue come to your attention before? What other issues could it have?

My car has 135000 miles.
My car has an automatic transmission.

You may have an intermittent problem with the power relay control box staying engaged after the key is turned off. This would require replacement of the relay box controller module. I’d recommend getting some assistance from a professional mechanic to verify this concern. They will be able to accurately diagnose your battery issue for you and replace the power supply module if necessary.

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 will randomly die overnight

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: Q: Transmission

This one is very tough to say what is going on. I personally haven't worked on a Mitsubishi Outlander so I don't have any experience with this particular symptom. I suspect this would be the case for many of us....

Q: Shifter stuck.

These vehicles are known for having problems with the shift cables breaking. I suspect this is what is wrong with your vehicle. A trained mechanic, such as one from YourMechanic, will be able to determine firsthand is this is the...

Q: Q: Changed fuel pump and car still won't start

Hello. There are many issue that could cause the vehicle to produce the symptoms you are experiencing. If the fuel pump is new I would move on to checking the battery, and then ignition system. I would also recommend scanning...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.