This module is from the late 1990s and early 2000s era of Mercedes vehicles equipped with factory Xenon high-intensity discharge (HID) headlights. It is primarily engineered for:
• Mercedes-Benz E-Class (W210 / S210): E320, E430, E55 AMG (typically model years 1999–2002)
• Mercedes-Benz CLK-Class (W208): CLK320, CLK430, CLK55 AMG