The vehicle came factory with H11 hid bulbs. I don't know if anything was modified. Mechanically, I can work my way through just about anything; however, an expert on different bulb requirements, I'm not. Normally, I never make any recommendations for the purchase of parts. However, from my own personal experience (owning an A8 with similar concerns), there is a website that you can get these bulbs from much cheaper. The site has nothing to do with 2carpros. Com or me personally, so again, I am not trying to sell anything and this site isn't associated with them. I would recommend you check the site (hidnation. Com) and see what they say. There is an toll free number to call (888) 559-5846. They offer lights at reduced costs and guarantee them. Also, they are extremely knowledgeable when it comes to the interchange of different bulb designs and what is needed.
Now, if the headlight assembly itself is cracked and allowing water to enter, that is a totally different issue.
Let me know if that helps and what they tell you.
Sunday, April 14th, 2019 AT 1:06 PM