Battery Light Flickering

20

Asked by Mar 03, 2017 at 04:27 PM about the 2004 Honda Accord Coupe EX

Question type: Maintenance & Repair

Hi so my battery light has been flickering on and off while im driving. I went
to autozone to get my battery tested and my alternator and it all passed.
Sometimes when I start up my car the battery light stays on and then turns
off. also when i am at a red light the battery light goes on and stays on until
i start driving. and i also noticed when i lock my car my driver side license
plate light flickers but i checked my lights today and both of the license
plate lights work. any advice?

10 Answers

87,045

There is a problem with the voltage regulator inside the alternator. Either get the voltage regulator replaced, or purchase a new alternator. It is the voltage regulator making the light flicker and to be on.

2 people found this helpful.
20

how long do you think itll last?

87,045

Long as it is charging a minimum of 13.8 DCV and no more that 14.8 DCV. Who knows.

20

what would happen if the alternator dies

87,045

Then you are either running off of just the battery voltage, and run the battery down until you couldn't start the car, or if it starts overcharging you will burn out the computer, light bulbs, and anything electrical along with ruining the battery.

20

how would i know when the alternator dies?

1 people found this helpful.
87,045

When your car does not start.

1,845

Here's a silly test- check inside the car where the fuses are, there should be a fuse to the voltage regulation- if the fuse is faulty or bad, you will get the same issues you've described earlier. try that and see if your problem goes away. Otherwise Rowefast is 100% correct.

1 people found this helpful.
20

would you know which fuse it is?

1 people found this helpful.
1,845

Fuse #18 inside the car

1 people found this helpful.

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