Purchased the BMS 4 LED kit (looked great) about two days after the install the angel eyes would blink several times after start up & my driver side light completely went out as well as the adaptive headlight stopped working. NOT saying this is due to BMS product itself. But I strongly recommend using double sided tape to secure the ballast. Anyway, I reinstalled the stock bulb, took it back to the dealer and they replaced the motor and and fixed the headlight no problem.
I really want to reinstall the angel eyes but im not sure if I need to get a replacement set of the LED's. I've read through some other threads, and it doesn't seem like many people have the blinking error at start up.