LexSC400328, Either the LED bulbs in the turn signals have burnt out or the car is not recognizing the bulb, due to the low current draw from the LED filament. The park light LED's may be on the verge of burning out, which would cause this flashing/flickering of the LED fixture.
Some info about LED Bulbs and the cause/effect it has on cars.
http://www.superbrightleds.com/carbulb-notes.htm