When I bought the my 2004 545i, didn't really pay attention to the little details since I was and still am unfamiliar with the 545's.

I noticed that my front left headlight contains moisture, the right one is ok. Is it just a matter of removing it, cleaning it out, ensuring that the seals are tight and reinstalling?

It's a little yellowish on the inside as well.

Thanks

 

See other related post currently active on front page of forum. You can remove the headlight and bake out the moisture in an oven (low heat, don't melt it). Let the assembly cool in a low humidity environment before reinstalling. Nothing you can do about any internal discoloration as the headlight assemblies cannot be opened up without damage.