Skip the auto shop - Our mechanics make house calls

Q: Battery keeps dying for no apparent reason

asked by on

The battery on my car keeps dying out. I had it replaced several times. The last one I installed was an expensive Nissan battery. The dealership checked the battery and the car. Everything checks out fine. But, the battery keeps dying out if it sits for more than a couple of days. It was jump-started several times. There is obviously something that keeps draining the battery, but they don't know what it is. Do you have any suggestions? Thank you in advance.

A: Hello. If the battery and alternator are fi...

Hello. If the battery and alternator are fine then I would test the ignition switch. It will commonly stay on and cause this. If it is fine, then an amperage draw test needs to be done on the vehicle. If all of the electronics are stock, then the issue may be a sticking relay. I have had the main fuse box fail internally and cause this a few times on this vehicle and the amperage draw test will identify this as the issue. If you need to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your battery.

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: Cable harness worn

Depending on how much the harness was damaged, a replacement might be necessary. There could also be secondary damage from non-insulated wires touching each other after the harness was cut. If it was only a few wires, the harness might...

Q: Transfer case adapter leak.

There should be an output seal between the transmission and the transfer case has an input seal with a gasket in between. If any of these are bad it may leak transmission fluid. I would recommend having a certified technician,...

Q: Overhead heat and A/C vents have no air or heat coming from them

It sounds like the issue is in the rear blower circuit. Check fuses 10 and 11 in the fuse block and also the rear blower relay, which supplies power to both of the fuses. The other possibilities are the rear...

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 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...
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...