I'm currently in the throws of replacing the driver door carrier as well. As described by others, the outside handle was popped out a bit and the door would not open from outside. From the inside everything worked fine.
One addition to gregwx5 step by step is on #7.
- Once the nut was removed from the handle, I needed to slightly pry out that edge because there is a detent holding the end of the handle to the carrier and preventing the handle from rotating. Once that was done it twisted as described.
Once removed, the carrier showed a break on the side with the spring. This is weak spot in the design of this part it seems. They must sell alot of these.
Thanks the information posted by others on this thread. It kept another X5 owner from opening their wallet to a stealer.