Brake and battery lights turned on

HAILEE DAWN MCCULLOUGH

MEMBER
2001 HYUNDAI SONATA
2.4L
2WD
AUTOMATIC
101,500 MILES

I was driving my car to work this morning and had my defrosters on. Front and back window. Halfway through the drive I realized that my back window defroster shut off on its own. I tried pushing the button back in and it wouldn't stick. So, I continued driving, then I noticed that my brake and battery light both appeared. I have had this issue before and was told to get my alternator changed. So, I've had my alternator changed (this year) and the battery has been changed within the last 1 1/2 years. I have also had my starter changed amongst other things.

Tuesday, March 29th, 2022 AT 5:29 AM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

Hi,

It sounds like you still have a charging issue. Oftentimes, the alternators used are remanufactured. I don't know if that was the case, but they simply don't last.

Do me a favor. We need to determine if the alternator is doing its job. Follow this link for testing. All you will need is a voltmeter or a multimeter.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Try that and let me know the results.

Take care,

Joe

Was this

answer

helpful?

Yes

No

Tuesday, March 29th, 2022 AT 6:50 PM

HAILEE DAWN MCCULLOUGH

MEMBER
2 POSTS

I had my battery and alternator tested today. They said my battery was not giving off the voltage that it needed to. So, I got a new battery, because they said that would solve the issue. After I got a new battery, I started my car, and the battery and brake lights are still on. The guy at AutoZone said that unfortunately it is probably an electronic issue and I have to go to a garage.

Was this

answer

helpful?

Yes

No

Tuesday, March 29th, 2022 AT 6:54 PM

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

It could be a connection issue as well. Check to make sure the grounds from the battery are clean and tight. Also, try the test I provided to confirm the alternator is producing what it should.

Let me know the results. I have many other things up my sleeve to test but need to know what is happening at the battery itself. (Voltage when off and when running).

Joe

Was this

answer

helpful?

Yes

No

Tuesday, March 29th, 2022 AT 8:51 PM