Sometimes when I'm making a left hand turn, the above quote pops up on my dash. There are two amber two filament bulbs on the front left side that blink when activated. The one in question is the one that is farthest left. It can blink in unisen and sometimes, it'll not come on at all causing the remaining blinkers to flash very quickly. Sometimes it'll come back on during the same left hand turn and everything returns to normal meaning regular interval flashes. Bulbs and sockets have been swapted and cleaned with no difference in performance. What can I try next?