Mercedes-Benz E500 Map Light Bulb Size

The Mercedes-Benz E500 map light requires a specific H6W bulb size for the interior lighting component. Data for the specified vehicle covers the range from 2003 through 2006.

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
2003-2006	H6W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament signalling bulb with BAX9s base. 12V, 6W.	H6W

Other Locations

Additional Notes

The Mercedes-Benz E500 uses the H6W bulb size for the map light across the 2003-2006 model years.
The H6W is an ECE-standardized bulb type, meaning it conforms to regulations recognized across Europe and internationally.
H6W bulbs operate on a 12-volt electrical system, which is standard in passenger vehicles of this class.
The H6W carries a 6-watt power rating, placing it in the low-wattage category typical of interior courtesy and signalling applications.
H6W bulbs use a BAX9s base, which is an offset pin bayonet fitting. The pin offset in the BAX9s base is a keying feature that prevents incorrect bulb installation.
Because the BAX9s base uses an asymmetric pin arrangement, it is not interchangeable with other bayonet base types such as the BA9s, despite their similar physical scale.
The H6W is a single-filament bulb, meaning it produces one fixed light output level with no high or low beam function.