Did you do the install yourself? If so it might be worth googling for similar installs to see if you can recode or re-pin.
You might also have problems with steering sensors - specifically calibration - so probably best to double check 👍
Hi another possibility is if the lights are HID remove the inspection covers and bulb and gaffer tape a smaller piece of tubing to a vacuum cleaner hose waggle the pipe around inside the headlamp unit and suck it out.
Steve.
The only way it can get in is at the back assuming the lense isn't cracked etc. You'll have to remove the headlight to gain full access to the rear abd then shake it out.