2003 MERCEDES-BENZ CL55AMG Owner's Manual

185 Controls in detail
Driving systems
Setting a lower speed
Briefly tip the cruise control lever in the
direction of arrow2 (
page 183) to
decrease 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
five seconds (
page 183), and one or
two segments around the stored speed
light up on the speedometer
(
page 181).Fine adjustment in 1 mph
(Canada: 1 km/h) increments
Faster

Briefly tip the cruise control lever in the
direction of arrow4 (
page 183).Setting to last stored speed
(“Resume” function)

Briefly tip the cruise control lever in the
direction of arrow4 (
page 183).
Distronic is set to the last stored
speed.

Remove your foot from the accelerator
pedal.
iWhen you use the cruise control lever
to decelerate, the transmission will au-
tomatically downshift if the rate of de-
celeration is too low.
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 preset
speed could cause an accident and / or seri-
ous injury to you and others.

186 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 183).
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
(40 km/h).


The ESP is active (
page 73) or you
deactivate the ESP.


You move the transmission selector le-
ver into positionN.
A signal will sound. The
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.

187 Controls in detail
Driving systems
1Distance warning function on / off
switch
2Thumbwheel for setting distance
Increasing distance
Increasing the distance setting tells Dis-
tronic to maintain a greater following dis-
tance to the vehicle ahead.
Turn thumbwheel2 towards
¯
.Decreasing distance
Decreasing the distance setting tells Dis-
tronic to maintain a shorter following dis-
tance to the vehicle ahead.

Turn thumbwheel2 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 lamp
l
in the
instrument cluster lights up


An intermittent warning sounds.
If these warnings are issued, you must
brake manually to maintain a safe distance
and avoid a collision with the vehicle
ahead. When pressing the brake pedal, the warn-
ing sound stops. The warning sound also
stops when the distance to the vehicle
ahead is sufficient again without applying
the brake pedal. In this case the distance
warning lamp
l
also extinguishes.
Warning!
G
If the distance warning lamp
l
in the in-
strument cluster lights up 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 possible ob-
stacle. However, do not drive by relying on
the distance warning function, as this will re-
sult in an emergency braking application.
Especially depending on road surface condi-
tions and driver reaction, this will not always
enable you to avoid a collision.

188 Controls in detailDriving systemsActivating
Press switch1.
Indicator lamp on the switch lights up.
A loudspeaker symbol appears in the
multifunction display (
page 183).
Deactivating

Press switch1.
Indicator lamp 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 re-
quired on the part of the driver. Be pre-
pared to brake in such situations. This will
deactivate the Distronic system.iComplex driving situations are not al-
ways fully recognized by Distronic. This
could result in wrong or missing dis-
tance 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.
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, ob-
serve 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.

189 Controls in detail
Driving systems
The most likely cause for a malfunctioning
system is a dirty sensor (located behind
the hood grill), 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 OPERA-
TOR'S MAN.
appears in the multifunction
display.
For cleaning and care of the Distronic sen-
sor, see “Cleaning the Distronic system
sensor” (
page 259).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.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.
iIf the message
DISTRONIC - CLEAN
SENSOR! SEE OPER. MANUAL
disappears
during driving and the last speed stored
flashes for approximately five seconds,
the dirt (e.g. slush) has dissolved;
Distronic is again operational.

190 Controls in detailDriving systemsLane 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 profiles, the vehi-
cles traveling near the outer edges of the
lane have not yet been detected by Dis-
tronic. There will be insufficient distance to
the vehicle ahead.
Active Body Control (ABC)
The ABC system automatically selects the
optimum suspension tuning and ride
height for your vehicle.
Suspension tuning
The suspension tuning is set according to:

your driving style


road surface conditions


the vehicle loading


your choice of suspension style,
“sporty” or “regular”, which you select
using the ABC switch
The selected suspension style is stored
in memory, even after the key is re-
moved from the starter switch.

191 Controls in detail
Driving systems
1ABC switch
2Indicator lamp
Start the engine.
Suspension for sporty driving
The setting for sporty driving is selected
when indicator lamp2 is illuminated.

Press ABC switch1 to change from
regular suspension to sporty driving
suspension.
Indicator lamp2 comes on.Suspension for regular driving
The setting for regular driving is selected
when indicator lamp2 is off.

Press ABC switch1 to change from
sporty driving suspension to regular
suspension.
Indicator lamp2 goes out.
Vehicle level control
Your vehicle automatically adjusts its ride
height to


reduce fuel consumption


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


W ith incre as ing s pee d, rid e hei ght i s re -
duced by up to a maximum of
0.95 inches (24 mm).


With decreasing speed, the ride height
is again raised to the selected vehicle
level.Select the level 1 and 2 settings only when
required by current driving conditions.
Otherwise


fuel consumption may increase


handling may be impairediThese 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.

192 Controls in detailDriving systemsThe following vehicle level settings can be
selected when the vehicle is stationary:
The switch and the indicator lamps are lo-
cated in the upper part of the center con-
sole.
1Indicator lamps
2Vehicle level control switch

Briefly press switch2 to change from
one level setting to the next. When ve-
hicle is at raised level 2, pressing the
switch will return the vehicle to normal
level.
The message:ACTIVE BODY CONTROL
VEHICLE RISING!appears in the multifunction display.
The display switches off when the vehi-
cle is raised.
Vehicle level when
stationary
Use for
Ride height increase
over normal
Automatic lowering
Indicator lamps
(page 192)
Normal level
Normal operation
None
Max. approx. 0.4 in (11 mm)
Both lamps off
Raised level 1
Driving with snow
chains (
page 253)
Max. 0.55 in (14 mm)
1
Max. approx. 0.55 in (14 mm)
One lamp on
Raised level 2
Very rough road surface
conditions
Max. 0.95 in (24 mm)
1
Max. approx. 0.95 in (24 mm)
Both lamps on
1Dependent on load