Audi S5 Map Light Bulb Size

The Audi S5 map light requires a 12961 bulb size for proper installation and function within the interior lighting system. Provided information covers the range from 2008 through 2018 for the specified vehicle and component.

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
2008-2018	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 S5 map light uses the 12961 bulb across all listed model years, spanning 2008-2018.
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 design that seats by friction fit into a compatible socket.
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 shared across many T10 miniature wedge bulbs, meaning the 12961 belongs to a broad family of physically interchangeable bulbs within that base type.
Physical interchangeability within the W2.1x9.5d base family does not guarantee electrical equivalence, as wattage and voltage ratings must also match the original specification for proper function.