Same here.
Replaced reverse ones on my avant and it does flash from time to time.
Recently replaced fogs does the same and got resistor inline.
It cannot be avoidedor decoded, been told here and for that reason will not change indicator bulbs.
In the end, I have replaced indicator bulbs and they also strobe when ecu does it’s bulb check every 30sec.
Difference in light wasn’t big but after finding right bulbs, I am more than pleased.
Waiting for a second par of resistors to arrive, as read online that, fitting them to all 4 indicators may or should solve the problem of strobe effect.
Rear one did not need resistors when first fitted leds and they didn’t threw any error. Will add them on as a matter of curiosity.
Awaiting another set of bulbs to replace current reverse bulbs, that supposed to be much brighter than current ones.
Nothing could and was done to solve strobe and doubt anyone would he ever to do.
Been told by “bulb site sponsor” that our C6’s are special and more complex as supposed to fitting any led bulbs and would need some additional drivers to wired in, to prevent strobe.
Haven’t been given any more details as gave up waiting for he’s bulbs.
At the moment, my car rear strobe from majority of lights
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