What This Part Does
This control unit manages the Xenon headlamp range adjustment system, automatically leveling your headlights to prevent glare for oncoming traffic while maximizing your visibility. Depending on the vehicle configuration, this unit serves as:
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Xenon headlamp range adjustment module (left or right side)
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Light range adjuster for precise beam control
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Xenon light power supply module for consistent illumination
Key Features
| Feature | Benefit |
|---|---|
| Genuine OEM Mercedes-Benz Part | Guaranteed fit, quality, and performance matching your vehicle’s original specifications |
| Precision Engineered | Designed specifically for Mercedes-Benz Xenon lighting systems |
| Direct Replacement | Plug-and-play installation with no modifications required |
| Comprehensive Quality Control | Subjected to rigorous testing to ensure reliability |
| Factory Warranty | Backed by Mercedes-Benz parts warranty |
Replaces Part Numbers
This control unit supersedes and replaces the following OEM part numbers:
166-900-28-00, 166-900-28-00-64, 166-900-28-00-80, 166-900-28-00-87, 166-900-28-00-88, 172-901-54-00
Compatible Mercedes-Benz Models
Based on comprehensive fitment data, this headlamp control unit is compatible with the Mercedes-Benz vehicles manufactured between 2005 and 2020; GL-Class / GLS-Class
Important Installation Notes
Position: This control unit can be used for Left or Right side applications, depending on your vehicle’s configuration
Condition: Genuine OEM New Part
Note: This part may also be supplied as a reconditioned unit through Mercedes-Benz exchange programs. The unit offered here is a new, genuine component
Professional Installation Recommended: Due to the complexity of Mercedes-Benz lighting systems, professional installation is advised
Why Choose Jemerto Motors for Your Mercedes-Benz Parts?
At Jemerto Motors, we specialize in genuine OEM parts for Mercedes-Benz, Toyota, and Jeep vehicles. When you purchase from us, you receive:
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✅ 100% Genuine Mercedes-Benz Parts – No aftermarket imitations
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✅ Competitive Pricing – Fair prices on authentic components
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✅ Expert Support – Our team understands Mercedes-Benz vehicles
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✅ Fast Shipping – Get your parts quickly and reliably
Order with Confidence
Don’t compromise your Mercedes-Benz’s advanced lighting system with inferior aftermarket components. Trust the genuine article—the same quality engineering that came with your vehicle when it left the factory.
Order your Genuine Mercedes-Benz Headlamp Control Unit (A 166 900 28 00 65) today and drive with confidence knowing your lighting is in perfect working order.
📞 Need assistance? Contact us for compatibility verification or installation guidance
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