BMW X3 Owners Manual: Programmable memory buttons
General information
The iDrive functions can be stored on the programmable memory buttons and called up directly, e.g., radio stations, navigation destinations, phone numbers and menu entries.
Settings are stored for the profile currently in use.
Without navigation system and telephone Only radio stations can be stored on the buttons, refer to user's manual for Navigation, Entertainment, Communication.
Saving a function
1. Highlight the function via the iDrive.
2. 
Press and hold the desired
button,
until a signal sounds.
Running a function
Press button.
The function will work immediately.
This means, e.g., that the number is dialed when a phone number is selected.
Displaying the button assignment
Touch buttons with bare fingers. Do not wear gloves or use objects.
The key assignment is displayed at top edge of screen.
Deleting the button assignments
1. Press buttons 1 and 8 simultaneously for approx. five seconds.
2. "OK"
Split screen
General information
Additional information can be displayed on the
right side of the split screen, e.g., information
from the on-board comupter.
...
Deleting personal in the
vehicle
The concept
Depending on the usage, the vehicle saves
personal data, such as stored radio stations.
These personal data can be permanently delete ...
Other materials:
BMW X3 Service & Repair Manual > Body repair instructions: Grinding aluminum components
1.0 Recommended tools and equipment
Grinding work on the outer skin:
To carry out grinding work by hand or machine, you must use the recommended tools and
equipment.
The workbay can be cleaned with conventional extractor systems (low dust concentration).
Grinding work on the structure ...