The Mercedes-Benz CLS63 AMG parking light requires a bulb with the specific size 12961 for proper installation and function. Available data for the bulb covers the range from 2007 to 2011.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz CLS63 AMG uses the 12961 bulb for the front parking light across the 2007-2011 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base, rated at 12 volts and 5 watts.
The T10 wedge bulb is a small, wedge-shaped lamp that relies on its tapered plastic base to make electrical contact within the socket, requiring no separate metal base pins.
The W2.1x9.5d base designation refers to a standardized wedge base type, where the figures describe the contact width and pin spacing used to seat the bulb in its housing.
At 5 watts, the 12961 operates at a low power draw consistent with a parking or position light function rather than a primary illumination source.
The same 12961 bulb size is specified for CLS63 AMG vehicles equipped with halogen capsule headlamps across the 2007-2011 model years, indicating the parking light socket remains consistent regardless of headlamp type on this model.