The OEM reverse lights in the 4M Q7 are not very bright -- they're incandescent 921 bulbs. This video shows how to easily replace them with LEDs to increase output tremendously. LEDs Used: JDM ASTAR Super Bright Error Free 360-Degree Shine 921 912 GX-3020 Chipsets White LED Bulbs For Backup Reverse Lights ( https://www.amazon.com/dp/B01F2MUPZ0 ). These did not cause any errors to show up on the dashboard. Vehicle: 2023 Audi Q7, though this would apply to model years as early as 2017 (4M). Tools Needed: Torx T25 extended screwdriver