If your Pre-FL has adaptive Xenon headlights (AFS - cornering lights), and you switch to standard FL LEDs, the AFS module will go into fault mode. You must either code out AFS completely or retrofit FL AFS LED units (very expensive).
If you sell your Pre-FL A3 and buy a factory Facelift model, the financial difference is often less than the cost of this conversion. You do this for the project , not the economics.
The iconic sweeping indicators found on 2017+ models.
