D1S HID Headlight Ballast A2129007804 For Mercedes W212 E350 E400 E550 E63 AMG

D1S HID Headlight Ballast for Mercedes

This D1S HID headlight ballast for Mercedes regulates the electrical power needed to ignite and run high-intensity discharge headlamps, referencing OEM part number A2129007804.

Overview

This D1S HID headlight ballast for Mercedes is built to replace flickering or failed original lighting control units. The D1S HID headlight ballast provides the fast start-up voltages and stable operation required by premium gas-discharge bulbs. Using this D1S HID headlight ballast restores bright, reliable nighttime illumination on demanding roadways.

Built For Performance

• Aluminium housing protects internal circuits from heat and engine vibrations.
• Advanced microcontroller chips regulate power flow to prevent bulb flickering.
• Integrated safety shut-off guards against short circuits and surges.
• Designed to meet original specification form and function.

Fits These Machines

• for Mercedes-Benz E350 W212 (2010 to 2016)
• for Mercedes-Benz E400 W212 (2013 to 2016)
• for Mercedes-Benz E550 W212 (2010 to 2014)
• for Mercedes-Benz E63 AMG W212 (2010 to 2016)

On-The-Job Use

• Resolving flickering or dead headlight issues in premium sedans.
• Replacing faulty lighting modules after front-end collisions.
• Restoring active cornering headlight systems in automotive repair shops.

Specs At A Glance

Good To Know

Q: Does a replacement ballast require programming? A: This ballast is built as a direct plug-and-play unit, but some vehicle models may require system code clearing to fully sync.

Q: What is the main cause of headlight ballast failure? A: Moisture entry from a cracked headlight lens or seal is the leading cause of internal ballast shorts.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.