Mercedes-Benz S65 AMG Map Light Bulb Size

The Mercedes-Benz S65 AMG map light utilizes bulb sizes 12961 and H6W for the interior lighting system. Data for the specific components covers the range from 2006 to 2013.

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
2009-2013	12961
2006-2008	H6W

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ECE standard (Europe & worldwide). Single-filament signalling bulb with BAX9s base. 12V, 6W.	H6W

Other Locations

Additional Notes

The Mercedes-Benz S65 AMG map light specifications cover model years 2006-2013, split across two distinct bulb types depending on the year of the vehicle.
Model years 2009-2013 use the 12961 bulb, a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The T10 wedge base is one of the most widely used miniature bulb formats in automotive interior lighting, retained by friction fit within the socket rather than by a locking mechanism.
Model years 2006-2008 use the H6W, an ECE-standard single-filament signalling bulb with a BAX9s base, rated at 12V and 6W.
The BAX9s base uses offset pins to establish correct polarity orientation, which distinguishes it physically from other similarly sized bases and prevents incorrect installation.
The W2.1x9.5d base of the 12961 and the BAX9s base of the H6W are mechanically incompatible, meaning the two bulb types are not interchangeable across model years.
The H6W carries an ECE designation, indicating it conforms to European and international regulatory standards for signalling and interior lighting applications.
The 12961 operates at 5W while the H6W operates at 6W, a difference that reflects the distinct base types and socket designs used in each respective generation of the S65 AMG.