Skip the auto shop - Our mechanics make house calls

Q: Battery dying overnight

asked by on

My battery is dying over night. I replaced the battery and it still died. The voltmeter says I am drawing 3.65 to 4.22 amps. I pulled every fuse and found that pulling the radio fuse dropped the drain to 1.65 amps, which seemed to fix the problem. I need to solve this issue so I can use my radio.

It could be the accessory relay sticking or a problem with the radio itself. With the battery hooked up, get in the vehicle and turn the key to the accessory position and turn on the radio. Turn the key off and see if the radio shuts off. If not, open the driver’s door, it should turn off at that point, if not the radio has failed and will need replaced. If the radio turns off as it should, and you still have an amperage draw, the problem could be in the amplifier to the radio. It sounds like you are on the right track by pulling individual fuses. Look for warmer-than-usual relays as this would indicate one that is sticking. If you still can’t find the draw, enlist the assistance of a technician, such as one from YourMechanic, to diagnose and repair your dying 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

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: No sound from speakers but the dash panel works

Hi, thanks for writing in. This is likely an issue with the audio control module which controls the output to speakers and any pre-amp controls. I recommend having one of our certified automotive technicians from YourMechanic come to your home...

Q: Windshield wipers get stuck

Hi there. It sounds like there is a restriction in the linkage that your wiper motor is connected to. It is possible that one of the rods has been bent and now does not move as it was designed to...

Q: Battery light on

Hello. If you continue to have a low voltage issue with the new alternator then there may be a circuit issue. Most of the time, if the alternator is good, it is the battery cables or there is an issue...

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...
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.