This LED Headlight Bulbs can work with MOST 90% vehicles without error, but for some European luxury and special vehicles( such as Audi,BMW,Mercedes,Dodge,Jeep,Renault,Opel,Ford,VW, Skoda Octavia,Volvo,etc.),it may not light up or flicker first installation(it’s not the headlight problem) which indicate to install a strong decoder to avoid the error. Please check the original bulb’s size before place order.