Mercedes A2139002534 Left LED Headlight Control Module

Mercedes-Benz Left LED Headlight Control Module – A2139002534

Brand-new aftermarket LED headlight control module for the matching Mercedes-Benz A2139002534 application. This unit replaces the electronic controller on the left-hand headlight, supporting the headlight control and range-adjustment functions assigned to the matching system.

Key Features

• OE replacement reference: A2139002534 / A 213 900 25 34
• Matching factory LED headlight application
• Front-left headlight control and headlight-range adjustment application
• Brand-new aftermarket replacement
• Metal housing with black connector plate
• One long multi-pin socket and one separate two-contact socket, as pictured
• Four corner mounting tabs
• Dimensions: 155 × 105 × 35 mm — length × width × depth
• One module supplied with a 1-year HIDS-DIRECT seller warranty

Technical Specifications

The hardware and software markings above are identifiers photographed on the supplied sample. They are not additional OE replacement numbers and do not establish compatibility by themselves.

OEM References & Vehicle Compatibility

Open the relevant sections below. Build ranges identify the vehicle families in the application catalogue; they do not mean every headlight fitted throughout those dates uses this module. Facelift, headlight options and equipment codes can change the required controller.

Installation & Fault Diagnosis

Have a suitably equipped technician diagnose the fault before replacing the module. Check power supply, wiring, connectors and the headlight for moisture or corrosion. Repair water ingress and check the required seal before refitting.

Follow the vehicle-specific control-unit replacement procedure and carry out coding / initialisation or headlight calibration only where required. A warning message alone does not prove the module is faulty.

What’s Included

1 brand-new aftermarket A2139002534 replacement LED headlight control module with a 1-year HIDS-DIRECT seller warranty. The complete headlight, vehicle wiring, LEDs, fitting labour and coding service are not included.

Frequently Asked Questions

Is this an LED module or a xenon ballast?

This is an LED headlight control module for the matching Mercedes-Benz headlight application. It is sometimes described as a ballast, but it is not a xenon/HID bulb ballast or a replacement for a halogen component.

Which side does it fit?

The A2139002534 application is front left. On a UK right-hand-drive vehicle this is the passenger side / nearside. Match the original module number and headlight specification.

Does it fit every LED High Performance or MULTIBEAM headlight?

No. Mercedes-Benz uses different LED modules across headlight designs, production dates and vehicle options. Confirm A2139002534 or the appropriate service reference for your exact headlight using the original unit or VIN-based parts information.

Does it require coding or programming?

Requirements depend on the supplied replacement module and vehicle. Some replacements are supplied preconfigured and do not require software training; others require coding or initialisation. Confirm the setup requirements for this unit and your vehicle before installation, including any headlight adjustment or calibration.

Is this a genuine Mercedes-Benz or Continental part?

No. This listing is for a brand-new aftermarket replacement. Mercedes-Benz OE references and markings identify the replacement application; they do not mean the supplied unit is manufactured by Mercedes-Benz or Continental.

What is included?

One brand-new aftermarket LED headlight control module with a 1-year HIDS-DIRECT seller warranty. The complete headlight, wiring harness, LEDs, fitting labour and coding service are not included.