Hi today when I start my Audi A4 b5 '99 face lift after I opened my (drivers) window smoke came out of it, it lasted for few seconds and smelled like burned plastic after that nothing happened smell lasted for few minutes more and that was it. All functions on the door work correctly after that but I'm worried that something gone wrong. So can anyone help me giving me any idea or explain how can I remove plastics from the door to see is there any thing in it. Thank you in advance.