2009 Legacy GT Intermittent headlights flicker intermittently. Dash lights as well.

Driving to work this morning, I noticed my headlights started flickering every so often. I have HID bulbs installed, so I thought maybe that was the culprit. Then not only were the headlights going out but the entire dash went blank for a split second, and noticed the engine cut out for the same amount of time. The vehicle never fully stopped running. The dash and engine only happened 2 times, but the headlights flickered a good amount.

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I checked the battery terminals, both tight. Positive side has a very small amount of corrosion, ill clean that off when I get home.

I ran some new grounds a few months ago, those are still intact. (From the frame to the underside of the engine.)

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I don't have a problem trying to figure out the problem, just seeing if its been a common occurrence for others and save some time and headache.

 

Thanks in advance!

Found the problem, removed the positive terminal and found even more corrosion. Cleaned it up and drove vehicle for a good 40 mins and no problems. Im glad it was something simple.

Glad it was an easy fix.

 

I guess you have learned what some of us old guy's did many years ago.

 

Before Winter, make sure the battery terminals are clean and tight. Even a little grease to seal moisture out is not a bad idea.

 

Also replace the battery before it's 6th Winter. its cheap insurance against it failing on the coldest day of the year.

Yeah I've fixed quite a few customer cars complaining of similar electrical issues. But those cars had a good amount of corrosion on their terminals. I was in a subaru dealer for 10 years from 2006-2016 and have always known subaru's issues with battery corrosion, but mine wasn't anywhere close to what I observed on customers cars lol. But I do appreciate the insight! Thank You!!!