See also:

System self-test
After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs:  - ...

"Minispare" emergency spare wheel
The specified tire pressure is printed in yellow on the emergency spare wheel. ...

Changing the set speed
When DSR is activated, the set speed can be changed to a value between 1 mph and 10 mph (Canada: between 2 km/h and 18 km/h) during the journey. – To increase or decrease the set speed in 1 ...