Just purchased a 2007 TL. It's like l discovered a whole new car.But l notest some moisture in my headlights.How do I stop moisture
from building up in my headlights.

 

is it a modified headlight?

if it's not, it could just be the seals between the bulbs.

try removing the bulbs and leave it open to get rid of moisture.

 

Still stock no modifications yet. Thanks for the advice. I'll give that a try.

 

make sure your engine is cool first

leave it unplugged overnight.

condensation appears because there is warm air inside the headlight, and the cold air outside is making it condensate.

i know some people with condensation that appears occasionally, stock headlights.
if it just showed up, it'll go away
if it comes and goes, i wouldn't worry much
if it is always there, id take action