Audi TTS Quattro Trunk Bulb Size

The Audi TTS Quattro trunk light utilizes a specific 12961 bulb size for illumination within the rear cargo area. Available data for the specified component covers the range from 2009 to 2023.

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 Type	Shop
2023	12961	Check Price
2009-2021	12961	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price

Other Locations

Additional Notes

The Audi TTS Quattro uses the 12961 bulb for the trunk across the 2009-2023 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.
The T10 designation refers to a tubular bulb approximately 10mm wide, commonly found in low-intensity interior and signal lighting positions.
The W2.1x9.5d base is a wedge-type base, 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, placing it in the low-wattage range typical of interior courtesy and cargo area lighting.
The W2.1x9.5d base specification is a precise fitment detail; wedge bulbs with differing base widths or pin configurations are not interchangeable with this socket type.