Mercedes-Benz SLK55 AMG Map Light Bulb Size

The Mercedes-Benz SLK55 AMG map light utilizes 12961 and H6W bulb sizes according to the provided technical specifications for the interior lighting components. Available information covers a range from 2005 through 2016 for the specified vehicle and lighting application.

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
2012-2016	12961
2007-2010	12961 (Front and Center)
2005-2006	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 SLK55 AMG map light uses two distinct bulb types across its model years: the 12961 (T10 wedge) for 2007-2016 and the H6W for 2005-2006.
The 12961 is a Philips part number designation for a miniature wedge bulb of the T10 form factor, operating at 12V and rated at 5W.
The T10 bulb uses a W2.1x9.5d base, which is the standard wedge-style base common across a wide range of automotive interior lighting applications.
The H6W follows ECE (Economic Commission for Europe) standardization, making it a globally recognized bulb type used in signalling and interior applications across many markets.
The H6W operates at 12V and 6W with a BAX9s base, which is an offset pin cap base and is not interchangeable with the W2.1x9.5d wedge base used by the 12961.
Because the BAX9s and W2.1x9.5d bases are physically incompatible, the H6W and 12961 bulbs cannot be substituted for one another without a socket adapter.
For the 2007-2010 model years, the specifications note that the 12961 bulb applies to both the front and center map light positions, indicating multiple fitment locations within the cabin.
The 2012-2016 model years list the 12961 without a positional qualifier, suggesting a single or undifferentiated map light configuration for those years.