189 Controls in detail
Sliding/pop-up roof*
Opening (Summer opening feature)
Press and hold buttonŒ after un-
locking the vehicle.
The windows and sliding/pop-up roof
begin to open after approximately one
second.
Release transmit button to interrupt
procedure.Closing (Convenience feature)
Press and hold button‹ after lock-
ing the vehicle.
The windows and sliding/pop-up roof
begin to close after approximately one
second.
Release transmit button to interrupt
procedure.
Ensure that all side windows and the slid-
ing/pop-up roof are properly closed before
leaving the vehicle.
Synchronizing the sliding/pop-up roof
The power sliding/pop-up roof must be re-
synchronized each time
after the battery has been disconnect-
ed
the sliding/pop-up roof has been
closed manually (
page 331)
the sliding/pop-up roof does not open
smoothly
a malfunction
Synchronizing
Turn the key in the starter switch to
position1 or2.
Press the switch in the "raise" direction
until the sliding/pop-up roof is fully
raised at the rear (
page 187).
Hold the switch for approximately one
second.
ProCarManuals.com
190 Controls in detailPanorama sliding/pop-up roof*
Panorama sliding/pop-up roof*Panorama sliding/pop-up roof* Opening and closing the roller sunblind
The roller sunblinds can only be opened or
closed when the panorama sliding/pop-up
roof is closed. The front and rear roller sun-
blind cannot be operated individually.
Panorama sliding/pop-up roof switch 1Open
2Close
Warning!
G
When closing the panorama sliding/pop-up
roof, ensure that no one is in danger of being
injured.
If the panorama sliding/pop-up roof is
closed with the convenience closing feature
and becomes blocked, it will not open auto-
matically.
Should this occur, press the release button
on the key and hold it down; the panorama
sliding/pop-up roof opens again.
Make sure to remove the key from the igni-
tion lock even when leaving the vehicle for
only a brief period of time.
In the event of an accident, the glass in ve-
hicles with a glass roof may shatter.
If the vehicle rolls over, there is a danger of
occupants without fastened seat belts being
thrown out of the opening.
In this case there is an increased risk of in-
jury even for passengers with fastened seat
belts, as entire body parts or portions of
them may protrude from the passenger
compartment.
ProCarManuals.com
194 Controls in detailDriving systems
Driving systemsThe following driving systems are ex-
plained on the following pages:
Cruise control
Distronic*
AIRMATIC DC*
Park assist (Parktronic*)
The BAS, ABS, ESP and SBC driving sys-
tems are described in the "Safety and Se-
curity" section (
page 73).
Cruise control
Cruise control automatically maintains the
speed you set for your vehicle.
Use of cruise control is recommended for
driving at a constant speed for extended
periods of time. You can set any speed
over 20 mph (30 km/h).
The cruise control function is operated by
means of the cruise control lever.
The cruise control lever is the uppermost
lever found on the left-hand side of the
steering column (
page 20).
Warning!
G
Cruise control is a convenience system de-
signed to assist the driver during vehicle op-
eration. The driver must always remain
responsible for the vehicle speed and for
safe brake operation.
Only use cruise control if the traffic and
weather conditions make it advisable to
travel at a steady speed.
The use of cruise control can be danger-
ous on winding roads or in heavy traffic
because conditions do not allow safe
driving at a steady speed.
The use of cruise control can be danger-
ous on slippery roads. Rapid changes in
tire traction can result in wheel spin and
loss of control.
Deactivate cruise control when driving
in fog.
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.
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197 Controls in detail
Driving systems
Distronic*
When activated, the Distronic adaptive
cruise control system increases driving
convenience afforded by the cruise control
during travel on expressways and other
major roads.
If the Distronic distance sensor detects
a slower moving vehicle directly ahead,
your vehicle speed will be reduced so
that you follow that vehicle at a preset
distance.
If there is no vehicle directly ahead of
you, Distronic will function in the same
way as cruise control (
page 201).
Warning!
G
Distronic adaptive cruise control is no sub-
stitute for active driving involvement. It does
not react to stationary objects, nor recog-
nize or predict the curvature and lane layout
or the movement of vehicles ahead. Distron-
ic can only apply a maximum of 20% of the
vehicle’s braking power.
It is the driver’s responsibility at all times to
be attentive to traffic and road conditions
and to provide the steering, braking and oth-
er driving inputs necessary to retain control
of the vehicle.Warning!
G
Distronic is a convenience system. Its speed
adjustment reduction capability is intended
to make cruise control more effective and
usable when traffic speeds vary. However, it
is not intended to, nor does it, replace the
need for extreme care. The responsibility for
the vehicle speed and the distance to the ve-
hicle ahead, including most importantly
brake operation to assure safe stopping dis-
tance, always rests with the driver.
Distronic cannot take street and traffic con-
ditions into account.
Warning!
G
Distronic requires familiarity with its opera-
tional characteristics. We strongly recom-
mend that you review the following
information carefully before operating the
system.iFor operation in the USA only: This de-
vice complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
This device may not cause harmful
interference, and
this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.
ProCarManuals.com
198 Controls in detailDriving systemsWarning!
G
Distronic cannot take street and traffic con-
ditions into account. Only use Distronic if
the weather and traffic conditions make it
advisable to travel at a steady speed.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.
ProCarManuals.com
200 Controls in detailDriving systems
Distronic menu in the control system
In the Distronic menu you can read the cur-
rent settings for Distronic. What appears in
the display depends on whether Distronic
and the distance warning function are
turned on or off.
Press buttonè orÿ repeatedly
until you see one of the following dis-
plays.
Warning!
G
An intermittent warning sounds and the
DTR warning lamp in the instrument cluster
is illuminated if the Distronic system calcu-
lates that the distance to the vehicle ahead
and your vehicle’s current speed indicate
that Distronic will not be capable of slowing
the vehicle sufficiently to maintain the pre-
set following distance, which creates a dan-
ger of a collision.
Immediately brake the vehicle to increase
the distance to the vehicle in front of you.
The warning sound is intended as a final cau-
tion that you have not interceded with your
own braking inputs to avoid a potentially
dangerous situation. Do not wait for the op-
eration of the warning signal to intercede
with your own braking, as that will result in
potentially dangerous emergency braking
which will not always result in an impact be-
ing avoided.
Tailgating increases the risk of an accident.
Warning!
G
Distronic brakes your vehicle with a maxi-
mum deceleration of 6.5 ft/s
2 (2 m/s
2).
This corresponds to about 20% of the maxi-
mum deceleration ability of your vehicle.
Distronic brakes the vehicle in an effort to
restore the preset distance or to maintain
the speed. The brake pedal is automatically
applied as this happens which results in the
brake pedal moving.
Keep driver’s foot area clear at all times, in-
cluding the area under the brake pedal. Ob-
jects stored in this area may impair pedal
movement which could interfere with the
braking ability of the Distronic system.
Do not place your foot under the brake pedal
– your foot could become caught.
ProCarManuals.com
204 Controls in detailDriving systemsDeactivating Distronic
There are several ways to deactivate the
Distronic system:
Briefly tip the cruise control lever in the
direction of arrow3 (
page 201).
or
Step on the brake pedal.
Distronic will be deactivated. The last
speed set will be stored into memory.Distronic deactivates automatically when:
you set the parking brake
you drive slower than 25 mph
(Canada: 40 km/h)
the ESP is active (
page 75) or you de-
activate the ESP
you move the transmission selector le-
ver into positionN
A si gnal wi ll s ound. T he
Distronic off
message appears in the multifunction
display for approximately five seconds.Setting the following distance in
Distronic
You can set the specified following dis-
tance for Distronic by varying the time set-
ting between 1.0 and 2.0 seconds. Using
this time setting and the current speed of
your vehicle, Distronic calculates and sets
the required following distance to the vehi-
cle ahead. The set distance will be shown
in the multifunction display field.
The thumbwheel for making the time set-
ting is located on the lower section of the
center console.
iThe following message will appear in
the multifunction display for approxi-
mately five seconds:
Distronic off
.
The last stored speed is deleted when
you turn off the engine.
Warning!
G
Distronic switches off and releases the
brakes when the vehicle decelerates below
the minimum speed of approx. 25 mph
( 40 km / h) by operation of the system. At
that time the driver must apply the brakes in
order to reduce vehicle speed further or
bring it to a stop.
Warning!
G
It is up to the driver to exercise discretion to
select the appropriate setting given road
conditions, traffic, driver’s preferred driving
style and applicable laws and driving recom-
mendations for safe following distance.
ProCarManuals.com
207 Controls in detail
Driving systems
The most likely cause for a malfunctioning
system is a dirty sensor (located behind
the hood grille), especially at times of snow
and ice or heavy rain. In such a case, Dis-
tronic will switch off, and the message Distronic - Clean sensor! see oper.
Manual
appears in the multifunction dis-
play.
For cleaning and care of the Distronic sen-
sor, see "Cleaning the Distronic system
sensor" (page 283).Turns and bends
In turns or bends, Distronic may not detect
a moving vehicle in front, or it may detect
one too soon. This may cause your vehicle
to brake late or unexpectedly.
iIf the message "Distronic - clean sen-
sor!" See oper. manual disappears dur-
ing driving and the last speed stored
flashes for approximately five seconds,
the dirt (e.g. slush) has dissolved;
Distronic works again.
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