2008 Mercedes-Benz S550 Radar Decision & Control Unit Set Used OEM A2218707293 / A2165402545

Headline & Summary

Restore the full functionality of your vehicle's safety and assistance systems with this genuine OEM Radar Decision and Control Unit set. Sourced from a 2008 Mercedes-Benz S550 (W221), these modules work in tandem to process data from the Distronic radar sensors and manage the vehicle's automated responses. The Decision Unit is the central hub for the Distronic Plus and Pre-Safe Brake systems, while the Control Unit manages the specific electronic signals for the radar array. Using original Mercedes-Benz modules is vital for maintaining the millisecond-fast response times required for collision avoidance and adaptive cruising.

Key Details & Specifications

• Part Name: Radar Decision Unit & Distronic Control Module

• Part Number (MPN): A2218707293 (Control Unit) & A2165402545 (Decision Unit)

• Brand: Mercedes-Benz (Genuine OEM)

• Condition: Used, fully tested. Both modules have been electronically verified with diagnostic tools. No signs of water damage, corrosion on the pins, or heat fatigue.

• Compatibility: 2007–2009 Mercedes-Benz S-Class (W221) and CL-Class (W216) equipped with Distronic Plus.

• Country of Manufacture: Germany

• Notes: These are critical electronic safety modules. Due to the Mercedes-Benz security architecture, these units may require SCN coding or programming via the Xentry/DAS system to sync with your vehicle’s central gateway and VIN.

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[⚠️ Fitment Note: Please verify compatibility with your vehicle’s VIN (WDDNG71XX8A154474) before purchase.]

Always buy OEM! OEM parts are built to factory specifications, ensuring the right fit, performance, and safety compared to aftermarket alternatives. We sell parts pulled from vehicles. They are 100% compatible with original OEM part numbers. In case you are looking to substitute a part, please check with your car’s part number and catalog.