Headlight Module BMW G20 G21 Front Left N/S LED DRL Turn Signal Unit 8496135

Visual condition of the part

The product shows signs of use visible in the photos.

Headlight Module BMW G20 G21 Front Left N/S LED DRL Turn Signal Unit is an original front lighting control module designed for installation on the left side of modern BMW 3 Series G20/G21 models. The component supports LED, Daytime Running Light (DRL), and turn signal functions, ensuring consistent operation of the entire headlight. This is a solution for users who expect precise fitment and stable performance of the lighting system.

Specifications and technical data

• SKU: 8496135
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8496135
• Substitutable numbers: 8496135, 63118496135, 1420000424
• Location on the vehicle: Front, Left
• Category: Headlight Assemblies

Purpose and function of the module

The presented front light module is designed specifically for BMW vehicles equipped with LED headlights integrated with daytime running lights and turn signals. The location on the vehicle is front, left side, which allows for clear identification of the component during diagnostics and replacement.

The module is responsible for:

• controlling the intensity and operation of the LED lights in the headlight,
• coordinating the operation of the DRL daytime running lights,
• correctly triggering the turn signal on the driver's side,
• communicating with the vehicle's electrical system and safety systems.

Benefits of using an original BMW module

Using an original front light module in a BMW 3 Series G20/G21 provides a number of practical benefits in daily operation:

• Full electrical compatibility – the module works with the factory wiring harness and vehicle controllers, minimizing the risk of system errors.
• Stable LED system operation – correct power supply and diode control reduce flickering and unwanted dashboard messages.
• Consistent lighting characteristics – maintaining the factory color and light distribution in the headlight.
• Seamless integration with assistance systems that use signals from external lighting.

Condition, verification, and service application

The module comes from the Front lights group and is a used component, making it an attractive cost-effective alternative while maintaining original build quality. This type of component is particularly useful for:

• repairs after collisions involving the front left part of the vehicle,
• fixing malfunctions related to the failure of DRL or turn signals,
• resolving issues with lighting error messages on the instrument cluster,
• restoring full headlight functionality after mechanical replacement of its components.

Thanks to maintaining factory specifications, the module allows for service replacement without the need for installation modifications or the use of additional adapters.

Installation and operational tips

Due to the nature of this electronic component, installation by a qualified service center is recommended, in accordance with the vehicle manufacturer's procedures. A properly installed module:

• ensures the correct operation of all lighting functions on the front left side of the vehicle,
• limits the risk of overloads in the electrical system,
• allows for trouble-free computer diagnostics in the future.

Before purchasing, it is worth comparing the module's parameters with the currently installed component in the car, especially regarding compatibility with the LED headlight type and equipment configuration.

Expanding BMW lighting upgrades

If you are planning a comprehensive repair or upgrade of the front lighting zone in your BMW and need other components from the same group, such as headlights, control modules, or additional LED units, check the available parts in the BMW Front lights category.

If you want to better understand how to select used lighting components and other subassemblies for popular car models, our guide will be helpful – The best used car parts – a guide to the most frequently chosen original parts.

Summary

Headlight Module BMW G20 G21 Front Left N/S LED DRL Turn Signal Unit is a specialized module from the Front lights group, designed to support the LED headlight on the front left side of the vehicle. Choosing an original component allows you to maintain factory lighting performance, correct cooperation with the car's electronics, and an aesthetic, consistent look for the front of the BMW 3 Series G20/G21.