I've got a 2017 A3 1.4 TFSI with adaptive non matrix LED headlights. Like many, the DRL LEDs have burnt out and I'm replacing them with aftermarket LED units (P/N b011783a). I've tried two new units and with both the LEDs are flashing on and off constantly. At first I shrugged and put it down to cheap after market parts, but I've put the old one back whilst I wait for a third replacement to arrive which I've ordered from Audi and now that original one is flashing too. Does anyone have any ideas what this might be? Any help much appreciated.