2008-2012 Genuine Original Factory OEM Audi A4 S4 RS4 B8 (Typ 8K) Bi-Xenon Headlights Headlamp HID D3S Ballast (Xenon Light Control Unit / Module / Controller / ECU / Computer / Starter / Electronic Unit / Steuergerät /Inverter ) , D3S Xenon Bulb , Retaining Ring , LED DRL (Daytime Running Lights) Tagfahrlicht Control Module , Wires Cable , Bulb Holder Projector Reflektor Reflector Bowls Headlight Lens Cover , Replacement Sale

Part will fit : Driver side / Passenger side / Left / Light / Front

Audi A4 B8 : 4-door saloon/sedan , 5-door Avant (estate/wagon) , Avant 2.0 TDI , A4 Allroad quattro , 1.8L 2.0L 3.2L TFSI , 2.0L 2.7L 3.0L V6 TDI

If your 2008-2012 Audi A4 S4 RS4 B8 HID Xenon Headlight low beam or Headlamp high beam have problems or Angle Eyes , daytime running lights DRL LED turn signal , like light failed failure, flicker , waring light , dipped beam very dim dimmer, getting dimmer, not working, burnout , flickering blinking , goes one and off , keeps going out , flashlight , making noise , not bright enough , not focused , stopped working , turning yellow and the dashboard displayer have warning light , error code , go up and down , moving up and donw , pointing down , distance control defective , malfuncation ,turning pink , not turning off , gone ping , turned purple ,turned pink , not bright enough , flashing , warning light ,not working properly , keeps burning out , have any other fault issues, you only need to change or replace related original led parts like: ballast, led bulb, control unit module , reflector , igniter , or wire harness cable to repair and fix your LED headlamps is ok, no need to cost a lot of money to buy a whole brand new headlight assembly like the car dealer suggest.

Normally speaking, when your headlight have problem, check out the fuse first, if it’s ok, then replace the factory fit xenon control unit box ballast is ok, because from our many years experience, when the headlight not work, 90% of the problem is on the ballast.