Professional navigation system
If the vehicle is equipped with a Professional
navigation system, the system adapts the ac‐
celeration and deceleration behavior of the ve‐
hicle to the road on which you are currently
driving.
To ensure that the system has the latest infor‐
mation on the course of the road, use the most
recent version of the navigation data.
If the vehicle position is unknown, e.g., if you
have left the region covered by the map, the
navigation system ceases to influence vehicle
behavior.
Applications Please try the system first during sparse traffic
and clear road conditions so that you can get
used to the system. After you have experience
and understand the system, only then use it
during normal traffic.
As with conventional cruise control systems,
active cruise control in no way reduces or sub‐
stitutes for the driver's own personal experi‐
ence, responsibility, alertness and awareness
in adjusting speed, braking or otherwise con‐
trolling the vehicle. The driver should decide
when to use the system on the basis of road,
traffic, visibility, and weather conditions. Active
cruise control is intended for use on highway-
type roadways where traffic is moving rela‐
tively smoothly as well as in slow-moving traf‐
fic congestion. Do not use the system in city
driving; in complex driving situations; heavy
traffic such as during rush hour; on curvy,
winding roads, slippery roads or roads with
sharp curves such as highway off-ramps; dur‐
ing inclement weather such as snow, strong
rain or fog; or when entering interchanges,
service/parking areas or toll booths. It is also
important to regulate your vehicle's speed and
distance setting within applicable legal limits.
Always be ready to take action or apply the
brakes if necessary, especially when the sys‐
tem is actively following a vehicle in front of
you. Otherwise, driving conditions can resultwhich lead to a violation of the law or elevated
risk of an accident.
The minimum initial activation speed is
20 mph/ 30 km/h, and the maximum speed is
110 mph/ 180 km/h. The system can also be
activated while the vehicle is stationary, refer
to page 114.
One lever for all functions1Storing and increasing the desired
speed 1122Storing and reducing the desired
speed 1123Interrupting 114 or deactivating 114 the
system4Retrieving the stored desired speed and
distance 114 or driving away 1145Selecting the distance to the vehicle
ahead 113
Storing the current speed
Push the lever, arrow 1, or pull it briefly, ar‐
row 2.
Seite 112ControlsDriving comfort112
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system activated, resting your foot on the acel‐
erator pedal will cause the system not to brake
even if necessary. Be certain that floormats or
other objects on the vehicle floor do not inter‐
fere with movement of the acccelerator
pedal.◀
Limits of automatic braking
While active cruise control is capable of
braking your vehicle automatically when you
approach a slower vehicle ahead, it is impor‐
tant to be aware that the ability of the system
to apply the brakes is also limited, e.g. when
you reduce your desired speed sharply. lt uses
only a portion of braking system capacity and
does not utilize the full capacity of the vehicle
braking system. Therefore, the system cannot
decrease your speed for large differences in
speed between your vehicle and the vehicle
ahead. Examples: when you approach a vehicle
traveling at a much lower speed than your own
speed such as approaching a toll booth or
when a much slower vehicle cuts in front of
you at close range.◀
Cruise controlThe concept The system is functional at speeds beginning
at approx. 20 mph/30 km/h.
The speed specified using the lever on the
steering column is maintained.
The system brakes on downhill gradients if en‐
gine braking action is insufficient.
Do not use cruise control
Do not use the system if unfavorable
conditions make it impossible to drive at a con‐
stant speed, for instance:▷On curvy roads.▷In heavy traffic.▷On slippery roads, in fog, snow or rain, or
on a loose road surface.Otherwise, you could lose control of the vehi‐
cle and cause an accident.◀
One lever for all functions1Storing and maintaining speed or acceler‐
ating2Storing and maintaining speed or deceler‐
ating3Interrupting and deactivating the system4Resuming a speed stored beforehand
Maintaining current speed
Push, arrow 1, or pull, arrow 2, the lever to the
resistance point.
The car's current speed is stored and main‐ tained. It is displayed on the speedometer and
briefly in the instrument cluster.
On uphill gradients, it may prove impossible to
maintain the set speed if current engine power
output is insufficient. If the engine braking ef‐
fect is insufficient on downhill slopes, the sys‐
tem will brake the vehicle slightly.
Increasing desired speed
Repeatedly press the lever to the resistance
point or beyond, arrow 1, until the desired
speed is reached.
▷Each time the lever is pressed to the point
of resistance, the desired speed increases
by approx. 1 mph/1 km/h.▷Each time the lever is pressed beyond the
resistance point, the desired speed is in‐
creased by up to 5 mph/10 km/h.Seite 118ControlsDriving comfort118
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