Original Ignition Switch Control Unit A2239002426 for Mercedes W223 S-Class
The Original Ignition Switch Control Unit (Part Number: A2239002426) is a genuine, Original Equipment Manufacturer (OEM) component specifically engineered for the Mercedes-Benz S-Class (W223 chassis). Manufactured to the exact stringent standards of Mercedes-Benz, this authentic Electronic Ignition Switch (EZS) module ensures flawless communication between your vehicle's smart key, the Drive Authorization System (DAS), and the Engine Control Unit (ECU). Built for long-lasting durability and optimal electrical performance, this control unit is essential for maintaining the high security, luxury reliability, and advanced startup systems of your modern Mercedes-Benz S-Class.
Function
- Ignition Signal Processing: Processes start/stop signals from the electronic ignition switch to initiate the vehicle's startup and shutdown sequences.
- Drive Authorization System (DAS) Integration: Communicates with the vehicle's immobilizer to verify the digital key fob, preventing unauthorized engine or motor starts.
- Power Distribution Management: Controls the electrical routing required to power vital vehicle systems, including the starter motor, ignition coils, and onboard computer networks.
- ECU Communication: Facilitates secure, high-speed data exchange between the ignition system and the Engine Control Unit (ECU) to ensure synchronized vehicle activation.
- System Diagnostics: Continuously monitors the ignition circuit for faults or tampering, storing diagnostic trouble codes (DTCs) to assist with maintenance and troubleshooting.
Supported Car Models
- Mercedes-Benz S-Class (W223) – 2020 to Present
- Mercedes-Benz S 500 (W223) – 2020 to Present
- Mercedes-Benz S 580 (W223) – 2020 to Present
- Mercedes-AMG S 63 (W223) – 2021 to Present
- Mercedes-Maybach S 480 / S 580 / S 680 (W223) – 2021 to Present
Note: Please verify exact compatibility with your specific VIN (Vehicle Identification Number) before purchasing. This module may require online programming/SCN coding via XENTRY diagnostic software for proper operation.




