See also:

Storing wheels
Store wheels that are not being used in a cool, dry and preferably dark place. Protect the tires from oil, grease, gasoline and diesel. ...

Rejecting or ending a call
► Press the button on the steering wheel. If you are not in the Telephone menu, you can still accept a call. ...

"Minispare" emergency spare wheel
The "Minispare" emergency spare wheel can be found in the stowage well under the trunk floor. Lift the trunk floor up. Turn stowage tray 3 counter-clockwise and remove together ...