I've had this issue for a long time now.
My dash doesn't flash for right turn indicators. It does for left. It used to do it for comfort blinkers, but now not at all. Not even a buzzer on right turn. All fine on a left turn.
I beleive that the dash in the B6 is controlled via can rather than wires actually into the dash to make the bulb work like in the A6 or B5.
I've had the dash out, had it in bits. I cannot see damaged tracks. The Hazard light switch makes both left and right work and if I turn off the ignition and use parking lights both left and right make the buzzer work.
So. Maybe something else is a miss. Does the CCM control indicators?
I've tried new stalks and new SCCM's
I've even tried a new hazard switch, but apparently that's only in B5's.
So does anyone have any ideas?