Ford C-Max Door Mirror Illumination Light Bulb Size

The Ford C-Max door mirror illumination light utilizes a 12961 bulb size for the specific exterior lighting component located on the side mirrors. Data for the bulb specifications covers the period from 2013 through 2018.

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
2013-2018	12961 (Puddle Light)

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 Ford C-Max uses the 12961 bulb across all listed model years, 2013-2018, for the door mirror puddle light position.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base.
The W2.1x9.5d base is a wedge-type fitting, meaning the bulb is held in place by tension from the socket rather than by a bayonet or screw mechanism.
The 12961 operates at 12 volts and 5 watts, which is consistent with low-current interior and courtesy light applications in passenger vehicles.
A puddle light projects downward from the door mirror housing to illuminate the ground beside the vehicle when the door is opened.
The T10 designation refers to the bulb's tubular envelope width, expressed in eighths of an inch, placing it among the smaller bulb sizes used in automotive applications.
The W2.1x9.5d base type is standardized under international automotive bulb classifications, and the 12961 is interchangeable with other bulbs sharing that base type, provided voltage and wattage ratings are also compatible.
Because the same bulb size applies without variation across the 2013-2018 Ford C-Max, a single replacement unit serves all listed model years for this position.