Anyone know how to replace Blinker Relay?

This might be what you need. Let me know if there's more to it.

 

Searching the Repair Manual, the expression "turn signal flasher assembly" only appears on the pages in the above attachment. Could it be that's all there is to it, a small block in the fuse box?

 

Does this help?

 

This video is for replacing the combination meter, so it's overkill. But it will show you how to remove the dash. Just go as far as you need to to find the blinker relay.

 

You only need the first ~40 sec of the video Jerry posted above. Pull off the silver air vent trim piece (VERY carefully! they get very brittle and will break easily--pull straight out, don't try to get the top and then the bottom, that will break the tabs or the piece itself--ask me how I know!) then two screws. Look for the yellow clips, they often stay in the rectangular holes in the dash. Be careful putting everything back together. In my used 2004, someone did not line up all the clips over their holes when pushing everything back together and bent the clips down (had to replace the entire piece with junkyard parts.) Don't worry about unclipping the hood release cable/lever from the trim, it should allow you to move it out of the way enough.

 

It's on this, Driver's Side Junction Box (don't you just love the copious use of abreviations...).

 

Looks like the relay is placed in the lower right corner:

 

@btped , have you checked to see that all of the bulbs are working? If one of the bulbs on the right side burned out and then shorted, or the wires shorted, you might have weird problems like this. Put the emergency flashers on and make sure the bulbs have the same brightness left and right. --just a thought...

 

@btped , here is a great writeup on replacing the flasher relay: 2005 Prius LED Flasher Relay from very helpful user @kkeane.
Also, here are the repair manual instructions for removing the instrument panel (shows all of the tabs.)

 

When it goes on while driving, does changing the steering wheel position stop that?
Perhaps it is a weird clock spring issue. The clock spring connects the turn signal switch to the rest of the car, among other things.

 

I wondered about that. But the turn signal stalk doesn't turn with the wheel, so I don't think it could be the clock spring. But there must be a short between wires somewhere. Tracking it down might be a long process.

 

Bad signal lever switch?

 

I had a bad feeling about that as soon as I saw you were writing about replacing that without more information to suggest it was the problem, but I'm sorry I didn't see the thread until now so it's too late to suggest anything else.

If I'd seen it sooner, I would have suggested watching with Techstream to see what position the ECU tells you the signal stalk is in, and using the active tests to command the signals on and off and see what happens. Might at least narrow down whether there's an issue upstream or downstream of the ECU.

-Chap

 

Hi all!

Does this work for 2015 prius too?