Mercedes-Benz S500 Dome Light Bulb Size

The Mercedes-Benz S500 dome light requires a 6411 bulb size for proper installation and function within the interior lighting housing. Available data covers the specific range from 1994 through 2006 for the specified vehicle components.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1994-2006	6411

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411

Other Locations

Additional Notes

The Mercedes-Benz S500 uses the 6411 bulb for the dome light across all listed model years, spanning 1994-2006.
The 6411 is classified as a festoon bulb, meaning it is cylindrical in shape and mounts by pressing its end caps into spring clips rather than using a twist or plug-in socket.
The 6411 bulb follows the ANSI standard, which is the designation system used in the United States and Canada for standardized lamp types.
The bulb has a 36mm length, which is the end-to-end span of the festoon body and is the critical factor in determining whether a replacement will seat correctly in the spring-clip housing.
The SV8.5 base designation refers to the single-contact end caps with an 8.5mm cap width, a common festoon base size found in interior automotive lighting applications.
The 6411 operates at 12 volts and 5 watts, consistent with standard low-draw interior lighting in passenger vehicles.
Because the 6411 is an ANSI-standardized type, aftermarket and OEM replacements from different manufacturers are generally interchangeable as long as they conform to the 36mm festoon length and SV8.5 base specification.
Substituting a festoon bulb of a different length, such as a 31mm or 41mm unit, would result in an improper fit within the spring-clip housing of the Mercedes-Benz S500 dome light.