Mercedes-Benz SL 2008 Owner's Manual page 209

Practical advice
Display messages
Display messages
DTR - - - km/h
DTR override
DISTRONIC inoperative
206
Possible cause/consequence
An activation condition for Distronic* is
not fulfilled.
Distronic* is no longer controlling the
speed of the vehicle.
Distronic* is faulty.
Possible solution
If conditions permit, drive faster than
X
30 km/h and store the speed (
or
Check the activation conditions for Dis-
X
tronic* ( page 129).
Y
Ease off the accelerator pedal.
X
Visit a qualified specialist workshop.
X
page 127).
Y
* optional