Sadly...here's a double example of no signature containing model/model year/build date or car info that can appear in the upper right. Although the HVAC system is basically configured the same in all e53s...the FIVE different X5 models have SEVEN different engines which have different engine bay configurations.
The OP's unrevealed engine configuration may allow access whereas one or more of the other engine configurations may not allow access. But sadly the OP never revealed which model X5 they have...and neither does the forum member that brought this old thread back to life.
To those who don't have a signature or car info that appears automatically when you post (click the
USER CP link at the very top of the page to create a signature or add car info)...it really does
help us to help you better...as well as helps others that are using the search feature in the future to know if your resolution, fix, upgrade, mod, etc applies to them based on the engine, model, model year, transmission, etc. There are also changes that occur during the production run that may occur by a "date" that can apply within a model year...thus "build date" can be important, too.