Facelift Bi-Xenon Headlight LED DRL Control Unit Left 8V0998473 for Audi A3 8V

Replace your failed or flickering headlight control unit with this premium OE-spec module. Engineered to restore proper lighting functions, it provides a direct plug-and-play solution for the part numbers referenced. This left-hand facelift bi-xenon LED daytime running light control unit, part 8V0998473, fits the Audi A3, S3 and RS3 on the 8V platform.

Features

• 8V0998473
• 90070222
• B014182-A
• Quantity: 1
• Side: left
• Facelift bi-xenon headlight with LED daytime running lights
• The metal housing is marked L
• Direct fit with the factory connector
• Replaces the original ballast/control unit to restore headlight performance
• Ensures correct operation of daytime running lights, low/high beam, indicators or adaptive functions (as applicable)
• High-quality electronics and sealed housing provide reliable, long-lasting service
• Direct fit with factory connectors - no modifications needed

Compatibility

• Audi A3 (8V) 2017-2021 facelift with bi-xenon headlights
• Audi RS3 (8V) 2017-2020 with bi-xenon headlights

Installation

1. Disconnect the battery and remove the headlamp assembly.
2. Unplug the faulty module and remove it from the headlight.
3. Fit the new module and secure it with the original screws.
4. Reconnect the wiring, refit the headlamp and test the lights.
5. Install the new module and secure it using the original screws
6. Reconnect wiring, reinstall the headlamp and test all lighting functions

Notes

• Compare 8V0998473 with the number on your original left-hand module before ordering.
• The gallery fitment line reads replacement for A3 and S3 8V facelift. RS3 is already named in this listing’s description.
• JTD.155 on the circuit board is a board marking, not a catalogue part number.
• A like-for-like new module that matches the original part number is often plug-and-play. Adaptive systems, or a used module, may still need coding or light initialisation if a warning remains.
• Professional fitting is recommended.
• Please match the part numbers and ensure compatibility with your vehicle before ordering.
• Professional installation is recommended for optimal results.
• Coding: new like-for-like replacements that match the OE part number are often plug-and-play. Adaptive / ILS / AHL systems, or used modules, may need coding, adaptation or light initialisation - consult a specialist if warning lights remain after fitting.
• 1-year warranty covering manufacturing defects