Mercedes-Benz 2013 C-Class Coupe Owner's Manual page 271

Display messages
Limit
--- km/h
Cruise control
- - - km/h
120 km/h!
Maximum speed
exceeded
Possible causes/consequences and M Solutions
While depressing the accelerator pedal beyond the pressure point
(kickdown), SPEEDTRONIC cannot be activated.
A condition for activating cruise control has not been met.
You have tried to store a speed below 30 km/h, for example.
X
If conditions permit, drive faster than 30 km/h and store the
speed.
X
Check the activation conditions for cruise control
( Y page 174).
Only for certain countries: the maximum speed has been excee-
ded.
In addition, the multifunction display shows
X
Drive more slowly.
Display messages
120 km/h!.
269
Z