The Mercedes-Benz R500 uses H7 bulbs for high beam headlight applications and H7 or D2S bulbs for low beam headlight functions, with the specific bulb size depending on the headlight configuration. The replacement chart covers 2006 to 2007 model years and details the corresponding bulb size specifications for each headlight beam type.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H7 bulb is a single-filament halogen type operating at 12V and 55W, fitted with a PX26d base. It carries ECE certification for use in Europe and worldwide markets, and is also approved for use in the United States and Japan.
The D2S is a high-intensity discharge (HID) xenon bulb rated at 85V and 35W, using a P32d-2 base. Unlike halogen types, it requires an external ignitor to initiate and sustain the arc discharge that produces light.
The D2S bulb is designed specifically for projector-type headlamp housings. Installing it in a housing not designed for HID output can result in improper light distribution.
The Mercedes-Benz R500 uses the H7 bulb for the high beam headlight across both the 2006-2007 model years.
Low beam headlight fitment for the 2006-2007 R500 depends on the headlamp system installed. Vehicles equipped with halogen capsule headlamps take the H7, while those equipped with HID headlamps take the D2S.
Because the H7 and D2S serve the same low beam function but are electrically and mechanically incompatible with each other, confirming which headlamp system is present on a specific vehicle is necessary before selecting a replacement bulb.