LED Ils Headlight Control Unit Module A2129005424 for Mercedes E Class W212

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 LED ILS headlight control unit, part A2129005424, replaces the original module on the Mercedes-Benz E-Class W212.

Features

• A2129005424
• A2129014406
• Quantity: 1
• LED ILS headlight control unit
• 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

• Mercedes-Benz E-Class (W212) with ILS headlights
• Mercedes E-Class (W212)

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 A2129005424 with the number on your original module before ordering.
• A software number is also stamped on the housing. It was not clear enough to quote as a second catalogue number.
• A like-for-like new module that matches the original part number is often plug-and-play. ILS 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