249 Controls in detail
Driving systems
Briefly lift the cruise control lever up
past the resistance point in direction of
arrow1 (
page 246).
Release the cruise control lever.
The vehicle speed increases in incre-
ments of 5 mph (Canada: 10 km/h).
Setting a lower speed
You can reduce the speed in two ways.Adjustment in 1 mph (Canada: 1 km/h)
increments
Briefly press the cruise control lever
down to the resistance point in direc-
tion of arrow2 (
page 246).
Release the cruise control lever.
The vehicle speed decreases in incre-
ments of 1 mph (Canada: 1 km/h).Adjustment in 5 mph
(Canada: 10 km/h) increments
i
The new speed is set and the vehicle will
accelerate. Keep in mind that it may take a brief
moment until the vehicle has reached the set
speed.
i
When you use the cruise control lever to
decelerate, the brake system will automatically
brake the vehicle if the engine’s braking power
does not brake the vehicle sufficiently.
i
The set value is decreased in 1 mph
(Canada: 1 km/h) increments each time you
press the cruise control lever down to the resis-
tance point.
Warning!
G
You can decrease the vehicle speed in
5 mph (Canada 10 km/h) increments. When
using this feature, keep in mind that it may
take a brief moment until the vehicle has
reached the set speed.
Decelerate the vehicle speed to a value that
the prevailing road conditions permit. Other-
wise, sudden and unexpected deceleration
of the vehicle could cause an accident
and/or serious injury to you and others.i
The set value is decreased in 5 mph
(Canada: 10 km/h) increments each time you
press the cruise control lever down past the
resistance point.
250 Controls in detailDriving systems
Briefly press the cruise control lever
down past the resistance point in direc-
tion of arrow2 (
page 246).
Release the cruise control lever.
The vehicle speed decreases in incre-
ments of 5 mph (Canada: 10 km/h).Setting to last stored speed
(“Resume” function)
Briefly pull the cruise control lever in di-
rection of arrow4 (
page 246).
The cruise control resumes to the last
set speed, or if no speed is stored, it
will set and store the current speed.
Remove your foot from the accelerator
pedal.
The last set speed appears in the multi-
function display for approximately
5 seconds.
Distronic*
When activated, the Distronic adaptive
cruise control system increases the driving
convenience afforded by the cruise control
while traveling on expressways and other
major roadways.
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 your
preset following distance.
If there is no vehicle directly ahead of
you, Distronic will function in the same
way as standard cruise control
(page 245).
i
The new speed is set and the vehicle will
decelerate. Keep in mind that it may take a brief
moment until the vehicle has reached the set
speed.
Warning!
G
The set speed stored in memory should only
be set again if prevailing road conditions
permit. Possible acceleration or decelera-
tion differences arising from returning to the
preset speed could cause an accident
and/or serious injury to you and others.
251 Controls in detail
Driving systems
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. It is not
however, intended to, nor does it, replace
the need for extreme care. The responsibili-
ty for the vehicle’s speed, distance to the
preceding vehicle and, most importantly,
brake operation to ensure a safe stopping
distance, always rests with the driver.
Distronic cannot take road and traffic condi-
tions into account.
Complex driving situations are not always
fully recognized by Distronic. This could
result in wrong or missing distance
warnings.
Warning!
G
Distronic adaptive cruise control is no
substitute for active driving involvement. It
does not react to pedestrians or on station-
ary objects, nor does it recognize or predict
the lane curvature or the movement of
preceding vehicles.
Distronic 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 the road, weather and traffic
conditions. Additionally, the driver must
provide the steering, braking and other
driving inputs necessary to remain in control
of the vehicle.
High-frequency sources such as toll
stations, speed measuring systems etc. can
cause the Distronic system to malfunction.
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.Warning!
G
Distronic cannot take road and traffic condi-
tions into account. Only use Distronic if the
road, weather and traffic conditions make it
advisable to travel at a constant 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.
253 Controls in detail
Driving systems
Distronic displays in the speedometer
dial
1Set speed
If Distronic is activated, one or two cruise
control speed segments come on around
the set speed.1Set speed
2Cruise control speed segments
3Speed of the vehicle ahead
If Distronic detects a vehicle directly
ahead, the cruise control speed
segments2, which represents the differ-
ence from the speed of the preceding
vehicle3 to the driver’s selected set
speed1, appear in the speedometer.
i
USA only: This device has been approved by
the FCC as a “Vehicular Radar System”. The ra-
dar sensor is intended for use in an automotive
radar system only. Removal, tampering, or alter-
ing of the device will void any warranties, and is
not permitted by the FCC. Do not tamper with,
alter, or use in any non-approved way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
Canada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the device will
void any warranties, and is not permitted. Do not
tamper with, alter, or use in any non-approved
way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
The vehicle speed displayed on the speed-
ometer can briefly vary from the speed setting
on the Distronic system.
255 Controls in detail
Driving systems
DISTRONIC menu in the control system
Use the
DISTRONIC
menu to display the
current settings for your Distronic system.
The information shown in the multifunction
display depends on whether the Distronic
system is activated or deactivated.
Press buttonè orÿ repeatedly
until you see one of the following two
displays in the multifunction display.Distronic activated
When you turn Distronic on, you will see
the set speed in the multifunction display
for about 5 seconds. When Distronic is
activated, the following display appears in
the multifunction display.
1Distronic activated
2Set vehicle speedDistronic deactivated
When Distronic is deactivated, you will see
the standard Distronic display in the multi-
function display.
1Preceding vehicle, if detected
2Actual distance to the preceding vehi-
cle
3Preset distance threshold to the pre-
ceding vehicle
4Your vehicle
Cruise control lever
The Distronic system is operated by means
of the cruise control lever.
The cruise control lever is the uppermost
lever on the left-hand side of the steering
column.
i
For activating or deactivating the Distronic
system, see “Activating Distronic” (
page 256)
or, see “Deactivating Distronic” (
page 259).
For activating or deactivating the Distance warn-
ing function, see “Distance warning function*”
(
page 179).
256 Controls in detailDriving systems1Setting current or higher speed
Adjustment in 1 mph increments (to
the resistance point) or 5 mph
increments (past the resistance point)
(Canada: 1 km/h or 10 km/h)
2Setting current or lower speed
Adjustment in 1 mph increments (to
the resistance point) or 5 mph
increments (past the resistance point)
(Canada: 1 km/h or 10 km/h)
3Deactivating Distronic
4Activating Distronic or resuming to last
set speedActivating Distronic
You can activate Distronic when the vehi-
cle speed is between 20 mph (30 km/h)
and 110 mph (180 km/h).
When Distronic is activated the multifunc-
tion display will show a message such as
DISTRONIC 55 mph
.
If Distronic has not been activated after
pressing the cruise control lever, you will
see the message DISTRONIC Off
in the
multifunction display.
In the following cases you cannot activate
Distronic:
up to 2 minutes after starting the
engine
when you brake
when you have set the parking brake
when the automatic transmission is set
to positionP, R, or N
if the ESP
® is switched off
if the ESP
® has switched off due to a
malfunctionSetting the current speed
Accelerate or decelerate to the desired
speed.
Briefly lift the cruise control lever in
direction of arrow1 or depress in
direction of arrow2 (
page 255).
Distronic is activated and the current
speed is set.
Remove your foot from the accelerator
pedal.
i
If you do not take your foot off of the accel-
erator pedal and continue to accelerate past the
set speed, the following message will appear in
the multifunction display:
DISTRONIC OverrideThe distance to a slower moving vehicle in front
of you will not be set. Your vehicle speed will
then be determined only by the accelerator
pedal position.
257 Controls in detail
Driving systems
Setting a higher speed
You can increase the set speed in two
ways.
Adjustment in 1 mph (Canada: 1 km/h)
increments
Briefly lift the cruise control lever up to
the resistance point in direction of
arrow1 (
page 255).
Release the cruise control lever.
The vehicle speed increases in incre-
ments of 1 mph (Canada: 1 km/h).Adjustment in 5 mph
(Canada: 10 km/h) increments
Briefly lift the cruise control lever up
past the resistance point in direction of
arrow1 (
page 255).
Release the cruise control lever.
The vehicle speed increases in incre-
ments of 5 mph (Canada: 10 km/h).
i
The set value is increased in 1 mph
(Canada: 1 km/h) increments each time you lift
the cruise control lever up to the resistance
point.
Warning!
G
You can increase the vehicle speed in 5 mph
(Canada 10 km/h) increments. When using
this feature, keep in mind that it may take a
brief moment until the vehicle has reached
the set speed.
Increase the vehicle speed to a value that
the prevailing road conditions permit. Other-
wise, sudden and unexpected acceleration
of the vehicle could cause an accident
and/or serious injury to you and others.i
The set value is increased in 5 mph
(Canada: 10 km/h) increments each time you lift
the cruise control lever up past the resistance
point.
i
The new speed is set and the vehicle will
accelerate. Keep in mind that it may take a brief
moment until the vehicle has reached the set
speed.
258 Controls in detailDriving systemsSetting a lower speed
You can reduce the set speed in two ways.
Adjustment in 1 mph (Canada: 1 km/h)
increments
Briefly press the cruise control lever
down to the resistance point in direc-
tion of arrow2 (
page 255).
Release the cruise control lever.
The vehicle speed decreases in incre-
ments of 1 mph (Canada: 1 km/h).Adjustment in 5 mph
(Canada: 10 km/h) increments
Briefly press the cruise control lever
down past the resistance point in direc-
tion of arrow2 (
page 255).
Release the cruise control lever.
The vehicle set speed decreases in
increments of 5 mph
(Canada: 10 km/h).
i
When you use the cruise control lever to
decelerate, the brake system will automatically
brake the vehicle if the engine’s braking power
does not brake the vehicle sufficiently.
i
The set value is decreased in 1 mph
(Canada: 1 km/h) increments each time you
press the cruise control lever down to the resis-
tance point.
Warning!
G
You can decrease the vehicle speed in
5 mph (Canada 10 km/h) increments. When
using this feature, keep in mind that it may
take a brief moment until the vehicle has
reached the set speed.
Decelerate the vehicle speed to a value that
the prevailing road conditions permit. Other-
wise, sudden and unexpected deceleration
of the vehicle could cause an accident
and/or serious injury to you and others.i
The set speed value is decreased in 5 mph
(Canada: 10 km/h) increments each time you
press the cruise control lever down past the
resistance point.
i
The new speed is set and the vehicle will
decelerate. Keep in mind that it may take a brief
moment until the vehicle has reached the set
speed.