For the 2019 Audi Q5, headlight bulb fitment depends on the factory headlight type. Models with HID headlights use D5S bulbs for both the low-beam and high-beam functions. Models equipped with LED headlights use integrated LED lighting for both low and high beam, so they do not use D5S replacement bulbs.
The front turn signal also varies with the headlight setup: HID-equipped models use bulb 64132, while LED-headlight models use LED lighting. The fog lights and reverse lights use 921 bulbs.
Most other exterior lighting is LED, including the brake lights, center stop light, tail lights, rear turn signals, daytime running lights, parking lights, side markers, cornering lights, and license plate lights. Interior lighting is also primarily LED, including the dome, map, trunk, vanity, and general interior lights. The glove box is listed with either 2825 or 98, so verify the installed socket before ordering.