Starting navigation system
1. 
Press the button on the
controller.
2. "Navigation"
The navigation system can also be
accessed
directly with the button on the controller.
See also:
Tire identification marks
Tire size
255/50 R 19 103 Y
255: nominal width in mm
50: aspect ratio in %
R: radial tire code
19: rim diameter in inches
103: load rating, not for ZR tires
Y: speed rating, before the R on ZR ...
Supplementary text messages
You can call up more information, e.g., on the
cause of a malfunction and on how to respond,
via Check Control.
In urgent cases, this information will be shown
as soon as the corresponding lamp ...
Vehicle information
Owner's Manual
Computer
Vehicle
...