Volkswagen Tiguan Dome Light Bulb Size

Additional Notes

• The Volkswagen Tiguan uses the 12961 bulb size for its dome light across the 2009-2021 model years covered in these specifications.
• The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor.
• T10 refers to the bulb's tubular shape, with the number indicating a width of 10 millimeters.
• The 12961 uses a W2.1x9.5d wedge base, which is a pinless base type that is held in place by the socket walls rather than pins or a bayonet mechanism.
• The bulb operates at 12 volts and 5 watts, consistent with standard low-current interior lighting applications in passenger vehicles.
• The W2.1x9.5d base designation is an IEC standard, meaning the 12961 is part of a globally standardized socket family rather than a proprietary fitment.
• Because the T10 wedge base is a widely adopted standard, multiple manufacturers produce bulbs that are physically interchangeable with the 12961 in this application.
• Physical interchangeability does not guarantee electrical equivalence, and substitutes should match the 12V, 5W rating to avoid socket or circuit issues.