The 2015 Audi A6's available LED headlights provide exceptional illumination and distinctive styling, but when malfunctions occur, repair complexity and cost exceed traditional lighting systems. Understanding LED headlight components helps evaluate repair options.
Audi LED Headlight System
Audi's Matrix LED headlights integrate multiple LED modules controlled by a headlight computer. The system includes LED modules for low beam, high beam, turn signals, and daytime running lights. A separate LED driver module powers the LEDs, and the headlight leveling motor maintains proper aim. Each component can fail independently.
Common LED Headlight Malfunctions
Individual LED segments may fail, creating dark sections or reduced brightness. The LED driver module can fail, causing flickering or complete failure. Control module issues prevent proper operation of adaptive features. Moisture intrusion damages internal electronics. DRL (Daytime Running Light) section failures are common and noticeable.
Diagnostic Process
Retrieve fault codes through VAG-COM—specific codes identify which module or function has failed. Visual inspection confirms which LED sections are affected. Check for moisture inside the headlight housing. Test LED driver output if partial failures occur. Evaluate whether repair or replacement provides better value.
Repair Options
Some specialists offer LED module repair for specific failures rather than complete headlight replacement. LED driver modules can sometimes be replaced separately. Complete headlight replacement is expensive but ensures full function. Used headlights from salvage sources may provide cost-effective replacement with appropriate inspection. Audi has released some updated components addressing known failure points.