
Built-in ActivationBig cabin, hidden subwoofer slider — this activation lets you tune the Q7's bass properly, even with all three rows occupied.
Audi Q7 4M Facelift models with Audi Sound System (PR-9VD) ship with only Bass and Treble in the MMI Sound menu, despite the subwoofer playing the whole time. In a cabin as long as the Q7's, that lack of separate sub control means the low end either dominates the front seats or disappears in the third row depending on volume. This activation unhides the dedicated Subwoofer slider through a guided, VIN-specific OEM workflow in RetroLab Pro — no dealer visit, no remote coding, no manual scripts.
From factorythe Q7 MMI only exposes Bass and Treble. With a long 3-row cabin, you have no way to compensate for how the subwoofer behaves when the car is loaded vs empty.
After activationa dedicated Subwoofer slider next to Bass lets you push the low end through a fully loaded family Q7 or pull it back when you're cruising solo on the motorway.
Q7 4M Facelift, SQ7 4M Facelift — with MIB3 + Audi Sound System
Submit your VIN — we verify compatibility
One-time payment after we confirm your car
Connect via ENet cable, follow the guided steps