2008 MERCEDES-BENZ CLS63AMG Owner's Manual

224 Controls in detail
Driving systems
Setting a lower speedBriefly tip the cruise control lever in di-
rection of arrow2 (
page 222) to de-
crease vehicle speed in increments of
5 mph (Canada: 10 km/h).
The new speed is set.
The stored speed is displayed in the
multifunction display for approximately
5 seconds (
page 222), and one or
two segments around the stored speed
come on, on the speedometer
(
page 219).Fine adjustment in 1 mph
(Canada: 1 km/h) increments
Faster
Briefly tip the cruise control lever in di-
rection of arrow4 (
page 222).
Warning!G
If you increase the vehicle set speed, keep in
mind that it may take a brief moment until
the vehicle has reached the set speed.
Increase the vehicle set speed to a value
that the prevailing road conditions and legal
speed limits permit. Otherwise, sudden and
unexpected acceleration of the vehicle
could cause an accident and/or serious in-
jury to you and others.
iWhen you use the cruise control lever to de-
celerate, the brakes will be applied to support
deceleration.
In addition, the transmission will automatically
downshift on long downhill grades.

225 Controls in detail
Driving systems
Setting stored speed
(“Resume” function)
Briefly tip the cruise control lever in di-
rection of arrow4 (
page 222).
Distronic is activated and set to the last
stored speed.
Remove your foot from the accelerator
pedal.Deactivating Distronic
There are several ways to deactivate the
Distronic system:
Briefly tip the cruise control lever in di-
rection of arrow3 (
page 222).
or
Step on the brake pedal.
Distronic will be deactivated. The last
speed set will be stored in memory.Distronic deactivates automatically when:

you set the parking brake

you drive slower than 20 mph
(30 km/h)

the ESP® is active (page 92) or you
deactivate the ESP®

you move the gear selector lever into
positionN
A s i g n a l w i l l s o u n d . T h e
DISTRONIC Off
message appears in the multifunction
display for approximately 5 seconds.
Warning!G
The speed stored in memory should only be
set again if prevailing road conditions per-
mit. Possible acceleration or deceleration
differences arising from returning to the pre-
set speed could cause an accident and/or
serious injury to you and others.
iThe following message will appear in the
multifunction display for approximately
5 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 approximately
20 mph (30 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.

226 Controls in detail
Driving systems
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.1Distance warning function on/off
switch
2Indicator lamp
3Thumbwheel for setting distance
Increasing distance
Increasing the distance setting tells
Distronic to maintain a greater following
distance to the vehicle ahead.
Turn thumbwheel3 towards¯.Decreasing distance
Decreasing the distance setting tells
Distronic to maintain a shorter following
distance to the vehicle ahead.
Turn thumbwheel3 towards®.
Distance warning function
When Distronic is deactivated, this func-
tion will continue to warn you when recog-
nizing a stationary obstacle or a slower
vehicle moving in the vehicle’s path and
the danger of a collision exists:

The distance warning lampl in the
instrument cluster comes on.

An intermittent warning will sound if
necessary.
If these warnings are issued, you must
brake manually to maintain a safe distance
and avoid a collision with the vehicle
ahead.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.

227 Controls in detail
Driving systems
When pressing the brake pedal, the warn-
ing sound ceases. The warning sound will
also cease when the distance to the vehi-
cle ahead is sufficient again without apply-
ing the brakes. In this case, the distance
warning lamp also go out.Activating
Press switch1.
Indicator lamp2 on the switch comes
on. A loudspeaker symbol appears in
the multifunction display (
page 222).
Deactivating
Press switch1.
Indicator lamp2 on the switch goes
out. No loudspeaker symbol appears in
the multifunction display.Driving with Distronic
This section describes a number of driving
situations where special precaution is
required on the part of the driver. Be pre-
pared to brake in such situations. This will
deactivate the Distronic system.
Warning!G
If the distance warning lampl in the in-
strument cluster comes on while driving
and/or an intermittent warning sounds, im-
mediate attention on the part of the driver is
required. As required by the traffic situation,
apply the brakes and navigate around a pos-
sible obstacle. However, do not drive by
relying on the distance warning function, as
this will result in an emergency braking
application. Especially depending on road
surface conditions and driver reaction, this
will not always enable you to avoid a colli-
sion.
iComplex driving situations are not always
fully recognized by Distronic. This could result in
wrong or missing distance warnings.
Warning!G
Distronic works to maintain the speed se-
lected by the driver unless a moving obsta-
cle proceeding directly ahead of it in the
same travel direction is detected (e.g. fol-
lowing another vehicle ahead of you at a dis-
tance set by Distronic). This means that:

Your vehicle can pass another vehicle
after you change lanes.

While in a sharp turn or if the vehicle in
front is in a sharp turn, Distronic could
lose sight of a vehicle traveling in front
of it, then your vehicle could accelerate
to the previously selected speed.


228 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,
Distronic will switch off, and the message
DISTRONIC
Currently Unavailable
See Operator’s Manual
appears in the multifunction display.
For cleaning and care of the Distronic sen-
sor, see “Cleaning the Distronic* system
sensor cover” (
page 337).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.
Distronic regulates only the distance be-
tween your vehicle and those directly ahead
of it, but does not register stationary objects
in the road, e.g.:

a stopped vehicle in a traffic jam

a disabled vehicle

an oncoming vehicle
The driver must always be on the alert,
observe all traffic and intercede as required
by steering or braking the vehicle.
Warning!G
Distronic should not be used in snowy or icy
road conditions.
iIf the message
DISTRONIC
Currently Unavailable
See Operator’s Manual
disappears during driving and the last speed
stored flashes for approximately 5 seconds, the
dirt (e.g. slush) has dissolved; Distronic works
again.


229 Controls in detail
Driving systems
Offset driving
A vehicle traveling in your lane but offset
from your direct line of travel may not be
detected by Distronic. There will be insuffi-
cient distance to the vehicle ahead.Lane changing
Distronic has not yet detected the vehicle
changing lanes. There will be insufficient
distance to the lane-changing vehicle.Narrow vehicles
Because of their narrow profile, the vehi-
cles traveling near the outer edges of the
lane have not yet been detected by
Distronic. There will be insufficient dis-
tance to the vehicles ahead.

230 Controls in detail
Driving systems
Airmatic DC (Dual Control)
Airmatic automatically selects the opti-
mum suspension tuning and ride height for
your vehicle. The Airmatic consists of two
components:

Adaptive Damping System (ADS)

Vehicle level control
The ADS automatically selects the opti-
mum damping for the respective driving
conditions. At the same time the suspen-
sion is set to either Sport 1, Sport 2 or
Comfort.
Suspension tuning
The suspension tuning is set according to:

Your driving style

Road surface conditions

Your choice of suspension style,
Sport 1, Sport 2 or Comfort, which you
select using the damping buttonThe following suspension styles are avail-
able:

Comfort
Both indicator lamps2 are off.

Sport 1
One indicator lamp2 is on.

Sport 2
Both indicator lamps2 are on.
1Damping button
2Indicator lamps
Start the engine (page 51).
Press damping button1 until the de-
sired suspension style is set.
!If you have selected the Comfort suspen-
sion tuning (
page 230), the vehicle lowers
slightly when you lock it within approximately
60 seconds after switching off the engine. When
parking, make sure that your vehicle cannot
come into contact with other objects, such as a
curb, while lowering. Your vehicle could
otherwise be damaged.
iThe selected suspension style is stored in
memory, even after the SmartKey is removed
from the starter switch.

231 Controls in detail
Driving systems
Vehicle level control
Your vehicle automatically adjusts its ride
height to

increase vehicle safety

reduce fuel consumption
The following vehicle chassis ride heights
can be selected:

Normal

Raised
The vehicle chassis ride height is raised or
lowered according to the selected level
setting and to the vehicle speed:

At a speed exceeding approximately
68 mph (110 km/h) with normal level
set or exceeding 75 mph (120 km/h)
with raised level set, the ride height is
reduced automatically. The table on
the next page provides an overview of
the vehicle levels.

With decreasing speed, the ride height
is again raised to the normal level.
Select the raised level only when required
by current driving conditions. Otherwise

handling may be impaired

fuel consumption may increase
iThese height adjustments are so small that
you may not notice any change.
Warning!G
To help avoid personal injury, keep hands
and feet away from wheel housing area, and
stay away from under the vehicle when low-
ering the vehicle chassis.