210 Controls in detailDriving systems
Distronic displays in the speedometer 
dial
If Distronic detects a vehicle directly 
ahead, the DTR indicator lamp E in the 
speedometer dial comes on white.
If Distronic calculates that there is a dan-
ger of collision
the DTR warning lamp E in the 
speedometer comes on red
an intermittent warning sounds
Immediately brake the vehicle to avoid 
a collision.
Under no circumstances should the 
driver await the intermittent warning 
sound before braking. See the follow-
ing warning note. 
The intermittent warning sound ceases 
and the red DTR warning lamp E 
goes out when the necessary distance 
to the vehicle ahead is again estab-
lished.
Warning!
G
Use of Distronic can be dangerous on slip-
pery roads. Rapid changes in tire traction 
can result in wheel spin and loss of control.
Distronic does not act upon adverse sight 
distance conditions. Do not use Distronic 
during conditions of fog and heavy rain, 
snow or sleet.Warning!
G
Close attention to road and traffic condi-
tions is imperative at all times, regardless of 
whether or not Distronic is activated.
Use of Distronic can be dangerous on wind-
ing roads or in heavy traffic because condi-
tions do not allow safe driving at a steady 
speed.
Distronic will not react to stationary objects 
in the roadway (e.g. a stopped vehicle in a 
traffic jam or a disabled vehicle). Distronic 
will also not respond to oncoming vehicles.
Switch off Distronic:
when changing from the left to the right 
lane if vehicles are moving more slowly 
in the left lane
when entering a turn lane or highway off 
ramp
in complex driving situations, such as in 
highway construction zones
In these situations, Distronic will continue to 
maintain the set speed unless deactivated.
Distronic is designed and intended only to 
maintain a set speed and keep a set dis-
tance from moving objects in front of it.
Warning!
G
The “Resume” function should only be oper-
ated if the driver is fully aware of the previ-
ously set speed and wishes to resume this 
particular preset speed.