Mercedes-Benz S600 Headlight Bulb Size

Additional Notes

• The H7 bulb is the most widely used type across the Mercedes-Benz S600 specifications, appearing in both high beam and low beam positions across multiple model years. It operates at 12V and 55W, uses a single filament, and is fitted with a PX26d base. It meets ECE standards and carries approval in the US and Japan.
• The D1S bulb serves as the low beam light source in the Mercedes-Benz S600 for 2007-2013. As an HID xenon discharge bulb, it operates at 85V and 35W and incorporates an integral ignitor within the bulb itself, which distinguishes it from other HID types that rely on a separate external ignitor.
• For 2003-2006 low beam applications, the S600 with HID headlamps uses the D2S bulb. Like the D1S, it is rated at 85V and 35W and is designed for projector-type housings, but it requires an external ignitor rather than a built-in one. Its base is a P32d-2, which is not interchangeable with the D1S PK32d-2 base.
• The D2R bulb appears in 1998-2002 low beam HID configurations. It shares the same 85V and 35W rating as the D2S but uses a P32d-3 base and is designed specifically for reflector-type housings. Substituting a D2S in place of a D2R, or vice versa, is not appropriate due to differences in base design and housing compatibility.
• For 2001-2010 high beam positions, the S600 uses H7 bulbs, while 2011-2013 high beam positions shift to the H9. Although both are single-filament ECE-standard halogen bulbs, the H9 operates at 65W compared to the H7's 55W and uses a PGJ19-5 base rather than the H7's PX26d base, making the two types non-interchangeable.
• The 9003 bulb is specified for the 1994 model year in both the high beam and low beam positions. It is a dual-filament halogen bulb rated at 12V with 60W on the high beam filament and 55W on the low beam filament. Unlike the ECE-standard bulbs used in later years, the 9003 follows the ANSI standard applicable to the US and Canada and uses a P43t base.
• For 1998-2006 low beam positions, vehicles without HID headlamps use the H7 bulb. The presence of two listed low beam options for those years reflects a factory fitment difference rather than an upgrade path, and the correct replacement type depends on which headlamp system the vehicle was originally built with.
• The H1 bulb is specified for the 1998-1999 high beam position. It is a single-filament halogen bulb rated at 12V and 55W with a P14.5s base, meeting ECE standards with additional approval in the US and Japan. Its single-pin base design differs from the multi-pin or bayonet configurations found on other halogen types in these specifications.