Open_

Hi,
Are there dynamic mirror blinkers that work with 2019 models? Or how have you got them to work?

OEM part is same through years, but aftermarket lights wont work correctly with new models. Light confiremd to work on '18 modles act like thin on '19 one:
Light itself aint broken as when connecting to direct 12v they will run perfectly, so the mystery is on car side.

I have 2019 A3 with matrix lights. These very dim oem turn signals look just bad and call for replacement. On comparison mirror blinker has almost 2 times shorter cycle as front and back indicator (flash cycle is around 800ms and from that light is lit around 150ms - should be double of that).
Maybe have to use resistor (but car recognises lights correctrly)? Maybe change something through OBD?

So for short if someone had same problem then how you solved it? Or if someone knows where to get correct lights that work then please tell also - it would be extremely appreciated.

Open_

Got another set of lights.
First set (aliexpress) from first post works as on video. No errors on car side and only half of leds are lighting up. From direct 12V supply led's will turn on and stay on.

Second set i got today are from Germany's seller. Lights have E and SAE DOT markings. But they wont work at all. Car gives indicator error and that's it. From direct 12V supply the leds will sturt running - the way that indicator should look (wont stay on like on first set).
Measured resistance - was higher than original light. Were thinking that if resistance is too high car thinks the light is broken. Added 1k parallel resistor so the lights whole resistance would match the original one. Plan didn't work, car still showed error and light didnt lit.

Do anybody know what kind on signal is sent to indicators or how they are controlled? So maybe will try to mod these lights some way.
Or where to get ones designed for 2019 and onwards...

Open_

Hi,
Just wanted to share that i had a little progress.
Added 43ohm resistor in series to China lights. Current dropped from 330mA (that was over 3x bigger than OEM lights current draw) to 65mA. Took the mirror cover off and stuff worked.
Tomorrow will make decent jumper wires with plugs and mount everything.

jermarTT

That was fast work. Good luck.

Open_

Please note that correct resistor was 47ohm.
Good luck and i gonna hope that maybe it will be helpful to someone...some day

macapple

i do not understand how do you put the resistor in ? by soldering onto it ?

Open_

How i put it there?
Made little harness with connectors and resistor. Yes, resistor is soldered between cut signal (+) wire and covered with heat sleeve. Harnesses one side connects to light and other end connects to car - connector that comes from door.
Didn't want to cut and mod original wiring.

macapple

WOW impressive , DIY KING !

PaulWhitt82

great -

do you have a link to the conenctors I can use to create the harenss


thanks

Paul

Open_

used dupont 2.54mm 2pin connectors with female pins on one end and male ones on another.
fixed connectors with black el.tape.
if one day correct working lights are made for 2019 a3 with matrix lights i'll surely replace my ghetto setup.
but for now it works (for 5-6 months).
i also didn't find what connector was used originally, and now - no need to fix something that aint broken. :P