Just bought my new 2008 X5 3.0 with Prem and Tech Pkg. I have it set up so that all doors lock as I drive away. However, when I stop and park, all doors remain locked even after I open the driver door (with 2 pulls). The manual indicates only way to unlock all 4 doors is to push the unlock button on the center dashboard. iDrive has no settings for this feature. Any ideas?