Mercedes-Benz M-Class Operator's Manual page 180

Driving systems
178
This means that:
Your vehicle can pass another vehicle after
R
you have changed lanes.
While in a sharp turn or if the preceding
R
vehicle is in a sharp turn, the DISTRONIC
PLUS could lose sight of the preceding
vehicle. Your vehicle could then accelerate
to the previously selected speed.
The DISTRONIC PLUS regulates only the
distance between your vehicle and those
directly ahead of it. It may not register
stationary objects in the road, e.g.:
a stopped vehicle in a traffic jam
R
a disabled vehicle
R
an oncoming vehicle
R
The driver must always be alert, observe all
traffic and intercede as required by means of
steering or braking the vehicle.
G WARNING
The DISTRONIC PLUS should not be used in
snowy or icy road conditions.
The following contains descriptions of certain
road and traffic conditions in which you must
be particularly attentive. In such situations,
brake if necessary. DISTRONIC PLUS is then
deactivated.
Cornering, going into and coming out of a
bend
The ability of DISTRONIC PLUS to detect
vehicles when cornering is limited. Your
vehicle may brake unexpectedly or late.
Vehicles traveling on a different line
DISTRONIC PLUS may not detect vehicles
traveling on a different line. The distance to
the vehicle in front will be too short.
Other vehicles changing lanes
DISTRONIC PLUS has not detected the
vehicle cutting in yet. The distance to this
vehicle will be too short.
Narrow vehicles
DISTRONIC PLUS has not yet detected the
vehicle in front on the edge of the road,
I n f o r ma t i o n P r o v i d e d b y :