Built-in ActivationAudi Q7 4M Facelift — Subwoofer Menu Activation (MIB3)
Big cabin, hidden subwoofer slider — this activation lets you tune the Q7's bass properly, even with all three rows occupied.
What You Get
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.
How It Changes Behavior
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.
- 100% OEM integration
- Unlocks the hidden Subwoofer slider in MMI Sound
- Independent control of Bass and Subwoofer levels
- Bass balanced for full or empty 3-row cabin
- 1-Click activation through the RetroLab Pro app
- Guided, VIN-specific OEM activation workflow
Requirements
- Audi Q7 4M Facelift (2020–2023)
- Audi Sound System (PR-9VD) — 10 speakers with subwoofer
- MIB3 MMI infotainment system
- Windows PC + ENet cable, or iPhone 15/16/17 + USB-C LAN adapter
Compatibility Notes
- Not supported: vehicles with the Bang & Olufsen 3D sound system
- Not supported: Q7 4M pre-facelift (MIB2 — different platform)
- Not supported: Q7 4M without the Audi Sound System (PR-9VD) option
- Not supported: model year 2024+ vehicles
Compatible Variants
Q7 4M Facelift, SQ7 4M Facelift — with MIB3 + Audi Sound System
How It Works
Submit your VIN — we verify compatibility
One-time payment after we confirm your car
Connect via ENet cable, follow the guided steps
