Audi S3 Map Light Bulb Size

The Audi S3 map light requires a bulb size of 12961 for the interior lighting system. Data for the specified component covers the range from 2015 to 2020.

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
2020	12961 (Rear)
2015-2019	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 Audi S3 uses the 12961 bulb size across all listed model years, spanning 2015-2020.
The 12961 is a Philips part number designating a miniature wedge bulb built on 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 base, which is the standard wedge-type base common to many low-wattage interior automotive bulbs.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
At 5 watts, the 12961 is a low-power bulb, typical of interior courtesy and map lighting applications.
The 2020 model year entry specifies a rear position, indicating the bulb serves the rear map light on that vehicle configuration.
The W2.1x9.5d base designation is not interchangeable with other base types such as festoon or bayonet fittings, and substitutions using different base styles would not be compatible with the factory socket.