Skip the auto shop - Our mechanics make house calls

Q: My radio turns off after 15 seconds and says low voltage

asked by on

I start my car and after 15 seconds the radio turns off and says low voltage

My car has 7000 miles.
My car has an automatic transmission.

Your car has two batteries, and one of them must be failing. Your car also has a power distribution module that monitors the batteries and switches the power draw or the charging voltage back and forth between them according to load. If the power module senses that the battery voltage is low on one or the other, it takes it upon itself to switch off any unnecessary demands to ensure you have enough power to run. It’s kind of a failsafe mode. You need to get this thing checked out soon because the next step will be to be stranded somewhere with a car that won’t start. You can contact Your Mechanic to have a technician come out to your home or office to check out your electrical system and recommend a fix for you.

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: Car won't crank or turn over, cannot be jump-started

Hey there. This sounds like the starter or starter solenoid has failed. Given that jumping the battery does not work, it is more likely the starter solenoid. Have a professional mechanic, like one from YourMechanic, diagnose the starting problem in...

Q: Battery wont' hold charge

The battery is a critical part of the electrical system. It is there to start the engine, but all other functions depend on it performing correctly. If the battery is more than 4 years old, I would just have it...

Q: My remote lock not responding.

Hi there. The battery in the key fob remote has depleted out and needs replaced. Then after replacing the battery in the key fob remote, you will have to reprogram the remote to your vehicle to make the doors lock...

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 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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.