So today while I used my right turn signal, I noticed that the blinking was super fast. At least twice the normal speed. Only happen on right side of car. Left side is fine. I looked around for a bad bulb but found none. I did not do any electrical work at all. Except reflashing ecu today. This is on a 2012 gr Sti. Any ideas? All my lights are stock.

 

Bulb has to be out somewhere, switch bulbs from left to right and see if the issue follows


Could be corner lights?

 

Either bulb is out or you have corrosion/resistance somewhere in that side turn signal circuit. Take the front and rear bulbs out on that side and reinstall or just like the top suggestion, switch sides and see if that solves it or sends the problem to the other side.

 

All bulbs are good. Will start looking at wiring

 

Could it be a bad relay?

 

do you have regular bulbs or LEDs?

 

it's the turn signal's wire. There's tension on it or something (if I remember correctly) that's causing it to intermittently flash like there's a short. I had the same problem on my 11 STi. I just took in it to the dealership and they fixed it in a few minutes.

 

it's a quick fix, what we do at the dealer is take out the bulb, use clamp to tighten up the socket which the bulb sits in. the reason why it flickers fast is because the bulb is loose while sitting in the socket, all you gotta do is tighten it and make sure the bulb sits snug, problem goes away.

 

I tried to tighten it up yesterday. And the problem came back after 10 minutes of driving. It's a bit of a pain because I have to remove the aem intake to get to it.