hyper flash with good oem bulbs

when activating the left blinker it hyper flashes. both bulbs are good. removed cleaned and reinserted. still hyper flash. No hyper flash when hazard flashed activated. Ideas?

 

When you say both bulbs are good do you mean front and rear or both fronts?

 

Welcome to the forum.

You've got a short somewhere or a bad bulb.
It's a different circuit that runs the hazards.

For instance;
I have front and rear LED bulbs in my turn signals with VLED resistors.
I had a short in my resistor wiring on one side.
The turn signal hyperflashed, but it worked fine with the hazards.
Once I fixed the bad connection, everything worked fine.

It's possible your electronic flash module is bad, but I'd think that is unlikely.

You say the bulbs are good, but I'd try new ones.
It doesn't hurt to have spares.

 

Front and rear, right side flashes at normal speed.

 

I’d replace both bulbs as hopefully the cheapest and easiest fix. If that doesn’t work, then agreed you probably have a short somewhere in the wiring

 

^ yep..

I think the rear is a 921
The front is a 3157ck or 7440 turn signal/DLR

@hog teacher does your 2017 have amber DRLs in the headlights or the white LED strip on the bottom?
Just curious..

 

Try tracing your wires too and make sure nothing has rubbed the coating off down to bare wire or got hot somewhere and allowed a short to come in the picture.

 

Check the bulb sockets for corrosion or rusted out contacts. That is common.