For the 2018 Audi SQ5, both the low-beam and high-beam headlights use integrated LED lighting. The supplied fitment data does not list a separate halogen bulb size or indicate a projector versus non-projector headlight variation, so confirm the factory headlamp assembly before ordering replacement parts.
The fog lights and reverse lights use size 921 bulbs. The glove box light is listed with two possible bulb sizes, 2825 and 98, so check the existing bulb or socket for an exact match.
Other listed exterior and interior applications are LED, including the front and rear turn signals, brake and center stop lights, tail lights, cornering lights, daytime running lights, parking and side-marker lights, license plate light, dome, map, trunk, vanity, step, and general interior lights. The supplied data does not identify additional replaceable bulb sizes for these LED applications.