Audi A4 B9 Facelift — LED Taillight Animation Activation

Your factory LED taillights already know how to do the lock/unlock animation — this activation just unlocks the file.

€100

One-time · Permanent VIN-verified Same-day confirmation

What You Get

Many Audi A4 B9 / B9.5 Facelift models (2020–2023) shipped with factory LED taillights (PR-8VM) already capable of running hidden animation profiles — they're sitting in the lamp control unit, just never enabled from factory. This VIN-specific OEM activation switches them on through a guided RetroLab Pro workflow: no manual coding, no scripts, no remote desktop sessions, and no workshop visit required.

How It Changes Behavior

From factoryon a stock A4 B9 Facelift, the LED taillights stay completely static when you lock or unlock the car — no welcome sweep, no goodbye animation, even though the hardware fully supports it.

After activationa model-appropriate animation plays across both rear lamps every time you lock or unlock the car: an S-style sweep on the Sedan, or the richer S + RS animation set on the Avant body.

100% OEM integration — same animation as factory-coded S / RS A4s
Plays automatically on lock and unlock
Avant gets the full S + RS animation profiles
Sedan / Limousine gets the S animation profile
Works on EU, RoW and NAR market vehicles
1-Click activation through the RetroLab Pro app
Guided, VIN-specific OEM activation workflow

Requirements

Audi A4 B9 / B9.5 Sedan or Avant (2020–2023)
Factory LED taillights (PR-8VM)
Windows PC + ENet cable, or iPhone 15/16/17 + USB-C LAN adapter

Compatibility Notes

Not supported: A4 B9 / B9.5 without factory LED taillights (halogen / non-PR-8VM units)
Not supported: A4 B9 pre-facelift (different lamp control unit)
Not supported: A4 Cabriolet (not part of the B9 lineup)