Which brands/models cars upgrate led headlights will need add decoder?

As belows models FYI:

(According to the actual cars brands/models situation to distinguish and consider due to endless models and upgrade technology is fast and difficult,especially for the power are inconsistent.)

1)Upgrade LED Headlights, 95% of the models on the market are not required to decode.Such as BMW,Korean Cars,Most American cars,French cars such as:Peugeot and Citroen.Japanese cars and Chinese cars.

2)Some models, such as the H15, come with their own decoder and are instalLED directly without additional decoders.

3) Some models, mainly European and American models, such as: Volkswagen's Sagitar, Magotan, Passat, Octavia, Haorui, Tiguan and other models, BMW's 2 series, 3 series, 5 series, X1, X3, American JEEP,Some New Regal,Cacillacs and Dodgers;France cars DS series;Korea car latest K3 model(maybe need) etc.