Mercedes-Benz S320 Map Light Bulb Size

The Mercedes-Benz S320 map light requires a bulb size of H6W for the interior lighting system. Data for the specified component covers the range from 1998 to 1999.

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
1998-1999	H6W

Bulb Specifications

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

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Additional Notes

The H6W is the map light bulb size for the Mercedes-Benz S320 across the 1998-1999 model years.
The H6W is an ECE-standardized bulb type, meaning it conforms to the Economic Commission for Europe's regulations governing automotive lighting components used in Europe and worldwide markets.
H6W bulbs operate on a 12-volt electrical system and carry a 6-watt power rating, which places them in the low-wattage category typical of interior signalling and courtesy lighting applications.
The H6W uses a BAX9s base, which is an offset pin bayonet fitting. The pin offset in the BAX9s base is a deliberate design feature that prevents incorrect bulb installation by ensuring only a correctly oriented bulb can be seated.
The H6W is a single-filament bulb, meaning it serves one lighting function only, with no secondary filament for an alternate mode such as a dimmed or high-intensity state.