[xjohnnyleex]

Hi everyone. So I recently purchased an 08 STI from a forum member here.

I noticed a very strange electrical issue. When I have the right turn signal on WHILE my head lights are on the blinker blink really fast.

When the headlights are off, the turn blinker blinks at a normal speed.

This ONLY happens when the head lights are on and ONLY on the right side.

Thoughts on how to find the problem?

[Chayse]

This came up fairly recently. There is a problem with the turn signal socket itself in the headlight. Take it to the dealer and explain. They should be able to get you a new one and fix it. It is not a bad bulb.

[xjohnnyleex]

Turns out it was a malfunctioning bulb.

It still lit up though. Weird.


Dealer replaced it under warranty. Thanks!

[Chayse]

I had the same problem. I replaced the bulb three times myself. It would fix the issue for a couple of weeks and then it would reappear. A couple of times, it started having problems and then stopped a week later. It wasn't the bulb for me. Keep an eye on it.

[xjohnnyleex]

Thanks. Will keep an eye on it.

[LtningRed08]

Crazy, just had this happen to me for the first time yesterday. I didn't notice if it was headlight related, though I did have them on yesterday. I'll have to check that out. It was also only the right side for me.

[xjohnnyleex]

Keep us posted to see if it is the same problem as mine!

[TexRyker]

This was the same thing that happened to the Motortrend test mule... fast blinking turn signal lights..

[Andy]

Happened to me too. It's not the bulb because the issue went away on its own when I was about to replace the bulb.

The bulb will light up very dim, which lowers the resistance on the circuit, which makes it flash faster.

[LtningRed08]

My right signal would blink fast sometimes, then it started doing it all the time, with headlights on and off. I decided to see if it was a bulb issue by switching the left and right bulbs, to see if the problem followed the bulb or stayed on the right side. First, I had to remove the battery and airbox to get to the blink bulbs.

To my great joy after I moved the battery out of the way and removed the airbox both blinkers began to work properly again. I decided to switch the bulbs anyway in case the problem happened again I could still see if it was related to the bulb if it happened on the left side rather than the right. Well, since I fiddled with it, both have been working normally... So I don't know what the problem was, but I guess its gone for now. Perhaps just a loose connection on the passenger side.