Hello, I am new to forums and I apologize if this post is in the wrong place. I recently purchased a 99' SLK 230, when I bought it the seller gave me records and a run down on what was wrong with the vehicle. One of the main issues was the driver's side door lock mechanism as the one that was in it fell apart. I purchased another one and installed it last night and everything went together pretty well, I made sure that the goldish color metal piece on the mechanism went into the slot on the exterior door handle and made sure it worked as I thought it should. I then closed the door and now I can't open the door at all, the only thing I didn't hook up last night was the yellow tube that plugs into a nipple on the locking mechanism. Has anyone else ever heard about an issue like this, or had this happen to them? Any ideas would be greatly appreciated as I never had a MB before so I'm learning as I go, this is a Christmas present for my son so I would like to have it ready for him by then. Thank You all in advance for any help you provide.