Q: Battery test after-market stereo question

asked by on

I installed an after-market stereo in my car about a month ago. It works fine, powers down when I turn off the car, and disconnects from Bt connection to my phone which I think means that it is wired correctly to the power source. About a week and a half later I had problems with my battery dying. I started the car fine, drove about 10 minutes away and made a brief stop, and then the car wouldn't start. I got jumped and drove to Autozone. They tested the battery and it read out as being in good condition. Then it wouldn't start again. The AZ guy replaced my severely corroded/dirty battery terminals and then the car started fine. I haven't had any problems since. Today (2 weeks later) I went to Firestone to have new tires put on. In their readout I saw that they noted the battery is failing. I have two questions: 1. How can the battery be failing when Autozone recently said it's fine? 2. Could the stereo somehow be slowly draining the battery without outright killing it?

My car has 140000 miles.
My car has an automatic transmission.

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 test after-market stereo question

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 pickup power, shifting gear problems, hose loose

After reading all the different issues and problems you are having and the air intake problems that you are mentioning, I suggest having a mechanic do a thorough check and diagnosis of your shifting issues to see if there are...

Q: do you know how long it would take to replace an oxygen sensor in a 2005 nissan murano?

Hello. We'll be happy to assist you. The labor time will depend on which oxygen sensor you need replaced. There are four different oxygen sensors on your vehicle. There are two upstream and two downstream oxygen sensors. We will have...

Q: Battery draining constantly.

The first thing to do is to make sure that your friend did not leave any bare wires that are touching ground and shorting out. If the wiring is ok then the problem may just be that it started to...

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...
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...
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.