Audi S7 Back Up Light Bulb Size

The Audi S7 back up light requires a bulb size of 12177 for the rear lighting assembly. Data for the specified component covers the range from 2013 to 2015.

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
2013-2015	12177

Bulb Specifications

Description	Bulb Size
Philips part number. Halogen bulb, specialty application. 12V.	12177

Other Locations

Additional Notes

The Audi S7 uses the 12177 bulb for the back up light across the 2013-2015 model years.
The 12177 is a Philips part number designating a halogen bulb rated at 12 volts and intended for specialty automotive applications.
Halogen bulbs in specialty configurations, such as the 12177, are typically designed for compact or uniquely shaped housings that standard bulb formats do not fit, which is reflected in their specialty application classification.
The consistent use of a single bulb size across all three model years indicates no mid-cycle change was made to the back up light assembly of the Audi S7 during this production span.
Because the 12177 carries a manufacturer-specific part number rather than a universal industry code, substitution with physically similar bulbs carries a risk of fitment or electrical incompatibility.