Mercedes-Benz CLS63 AMG Map Light Bulb Size

The Mercedes-Benz CLS63 AMG map light requires a bulb size of 12961 for proper installation and function within the interior lighting system. Available data for the specified component covers the range from 2007 to 2014.

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
2007-2014	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Mercedes-Benz CLS63 AMG uses the 12961 bulb for the map light across all listed model years, spanning 2007-2014.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base.
The T10 designation refers to a tubular bulb body approximately 10mm wide, a standard sizing classification used across many automotive interior lighting applications.
The W2.1x9.5d base type is a wedge-style base, meaning the bulb is held in its socket by the tension of the base itself rather than by a separate locking mechanism.
The 12961 operates at 12 volts and 5 watts, which is consistent with low-power interior lighting circuits typical of passenger vehicles.
Because the 12961 carries a specific Philips part number, aftermarket or replacement bulbs intended for this fitment are generally cross-referenced to the T10 W5W specification, which shares the same voltage, wattage, and base type.
The W2.1x9.5d base is not interchangeable with bayonet or festoon-style bases, so substitutions must match the wedge base format to seat correctly in the map light socket.