Mercedes-Benz S430 Map Light Bulb Size

The Mercedes-Benz S430 map light requires a bulb size of H6W for proper installation and function within the interior lighting system. Available data for the specified component covers a range from 2000 to 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
2000-2006	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 Mercedes-Benz S430 uses the H6W bulb size for the map light across all model years from 2000-2006.
The H6W is an ECE-standardized bulb type, meaning it conforms to European and international automotive lighting regulations rather than SAE standards used in North American specifications.
H6W bulbs operate on a 12-volt electrical system, which is consistent with standard automotive DC voltage.
The H6W is a single-filament bulb, meaning it serves one lighting function only and does not combine roles such as dual-intensity signaling.
At 6 watts, the H6W is a low-wattage bulb, which is typical for interior courtesy and map lighting applications where brightness demands are modest.
The H6W uses a BAX9s base, which is an offset pin bayonet fitting. The pin offset is a deliberate design feature that allows the bulb to be inserted in only one orientation, preventing incorrect installation.
The BAX9s base is distinct from the more common BA9s base. These two base types are not interchangeable despite their similar naming, as the pin positioning differs between them.