100 Adapti ve crui se co ntrol
react when you drive towards an obstacle
or something else on or near the road
that is not moving, such as vehicles stop-
ped in a traffic jam, a stalled or disabled
vehicle .
- Always remember that the adaptive
cruise control cannot detect a veh icle
that is dr iving towards you in your traffic
lane and that it cannot detect na rrow ve-
hicles such as motorcycles and bicycles.
@ Tips
- For safety reasons, the stored speed is
deleted when the ignition is turned off .
- The Electronic Stab ilizat ion Program
(ESP) and the Ant i-Slip Regulation (ASR)
cannot be deactivated when the adaptive
cruise control is sw itched on. If the ESP
and the Anti-Slip Regulation (ASR) has
been deac t ivated and yo u then sw itch on
the adaptive cruise control, the ESP func-
tion will also be activated a utomatically.
- Damage caused by accidents (e.g. if the
vehicle is damaged when parking) can af-
fect the radar sensor settings. This can
cause the system to malfunction or
switch off completely.
- The radar sensor cover is heated. In win-
ter cond itions, you should still check be-
fore driving to make sure it is free of ice
and snow. If necessary, clean the area
near the radar sensor carefully
~ fig. 111.
- To ensure that the radar sensor is not
blocked, foreign objects (e.g . stickers,
add-on parts) must not cover the area
near the radar sensor
Q fig. 111. The
area near the rada r senso r must not be
painted, either.
- For Decla rat ion of Compliance to Unit ed
States FCC and Indus t ry Canada regula-
tions
Q page 294.
How does adaptive cruise control work?
Applies to vehicles: with adaptive cruise contro l
Vehicles traveling ahead are detected with
the aid of a radar sensor .
Fig . 1 12 Radar sensor measureme nt range
A radar sensor is built into the front of the ve-
hicle
Q fig. 112, which is subject to certain
system limits
Q page 108. Stationary objects
are not taken into consideration . The system
is intended to measure the distance to reflec-
tive surfaces. The system responds after the
distance measurement has taken place. If a
measurement is not possible, the system does
not respond.
Open road
When the road is clear, the adaptive cruise
control works like cruise control. It maintains
a constant target speed specified by the driv-
er.
Driving in tr affic
If a vehicle driving ahead is detected, the
adaptive cruise control decelerates (within the
limits of the system)
Q page 108, Driver in-
tervention prompt
and Q page 108, System
limitations
to its speed and after adjusting,
tries to ma intain the set d istance from the ve-
hicle a head . The vehicle may tempo rarily dr ive
slower than the set speed wh ile adjusting
Q .& in Description on page 99.
If the vehicle in front accelerates, adapt ive
cruise control also acce lerates up to the speed
that you have set.
Situation requiring driver intervention
In some situat ions you will have to use the
footbrake to slow the ve hicle down in orde r to ..,_
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