MERCEDES-BENZ R320 2010 W251 Owner's Manual

slower vehicle moving in your vehicle’s path
and the danger of a collision exists, even
when the Distronic is switched off.
X
Press button V or U repeatedly until
the message Distance Warning appears
in the multifunction display.
The selection marker is on the current
setting. X
Press button W or X to switch the
distance warning function On or Off.:
Symbol for activated distance warning
function
If the distance warning function is switched
on you will see the symbol Ä in the
Standard display. When the distance warning
function is switched off the symbol Ä will
not appear. Trip computer menu
Use the Trip computer menu to call up
statistical data on your vehicle.
The following information is available:
R Fuel consumption statistics since start
(Y page 139)
R Fuel consumption statistics since last reset
(Y page 139)
R Resetting fuel consumption statistics
(Y page 140) R
Distance to empty ( Y page 140)
R Current fuel consumption (Y page 140)
When you enter the Trip computer menu,
you will always see the fuel consumption
statistics since start first.
Fuel consumption statistics since start X
Press button U or V repeatedly until
the message From Start appears in the
multifunction display. :
Distance driven since start
; Time elapsed since start
= Average speed since start
? Average fuel consumption since start
All statistics stored since the last engine start
will be reset approximately 4 hours after the
SmartKey in the starter switch is turned to
position 0 or removed from the starter switch.
Resetting will not occur if you turn the
SmartKey back to position 1 or 2 within this
time period.
Fuel consumption statistics since last
reset X
Press button U or V repeatedly until
the message From Start appears in the
multifunction display.
X Press button & or * repeatedly until
the message From Reset appears in the
multifunction display. Control system
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:
Distance driven since last reset
; Time elapsed since last reset
= Average speed since last reset
? Average fuel consumption since last reset
Resetting fuel consumption statistics X
Press button U or V repeatedly until
the message From Start appears in the
multifunction display.
X Press button & or * repeatedly until
the reading that you want to reset appears
in the multifunction display.
X Press and hold the reset button in the
instrument cluster until the respective
values are reset to 0.
The fuel consumption statistics reset
automatically to 0 after 99 999 miles or
9 999 hours, whichever occurs first.
Distance to empty X
Press button U or V repeatedly until
the message From Start appears in the
multifunction display.
X Press button & or * repeatedly until
the message Range: appears in the
multifunction display.
The calculated remaining driving range
based on the current fuel tank level
appears in the multifunction display.
If only very little fuel is left in the tank, a
vehicle at the fuel pump C appears
instead of the remaining driving range. Current fuel consumption
X
Press button U or V repeatedly until
the message From Start appears in the
multifunction display.
X Press button & or * repeatedly until
the message Consumption appears in the
multifunction display.
The current fuel consumption appears in
the multifunction display. Telephone menu
G
Warning!
A driver’s attention to the road must always
be his/her primary focus when driving. For
your safety and the safety of others, we
recommend that you pull over to a safe
location and stop before placing or taking a
telephone call. If you choose to use the
telephone while driving, please use the hands-
free device and only use the telephone when
weather, road and traffic conditions permit.
Some jurisdictions prohibit the driver from
using a mobile phone while driving a vehicle.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
You can connect your telephone to the
COMAND system via Bluetooth ®
, see 140
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separate COMAND system operating
instructions.
X
Switch on the COMAND system.
Refer to separate COMAND system
operating instructions.
X Press button U or V repeatedly until
the message TEL appears in the
multifunction display.
One of the following messages will appear
in the multifunction display:
R No Service: No network is available.
R Bluetooth Ready: The telephone has
not been connected to the COMAND
system via Bluetooth ®
yet.
X Connect the telephone to the
COMAND system via Bluetooth ®
.
R Ready or name of the network provider
(if available): The telephone has found a
network and is ready for use. You can
operate it using the control system.
Answering a call When your telephone is ready to receive calls,
you can answer a call at any time. In the
multifunction display you will then see the
following message, or if available, the caller
ID (number or name):
X
Press button 6.
You have answered the call.
Ending a call or rejecting an incoming
call X
Press button ~. Dialing a number from the phone book When your telephone is ready to receive calls,
you may select and dial a number from the
phone book at any time.
X
Press button U or V repeatedly until
the message TEL appears in the
multifunction display.
X Press button & or * repeatedly until
the desired name appears in the
multifunction display.
If you press and hold button & or
* for longer than 1 second, the system
scrolls rapidly through the list of names
until you release the button again.
The stored names are displayed in
alphabetical order. :
Selected name from the phone book
X Press button 6.
The control system dials the selected
phone number.
If the connection is successful and this
feature is supported by your network
provider, the name of the party (if stored in
your phone book) you are calling will
appear in the multifunction display.
The control system stores the dialed
number in the redial memory.
or
X Press button ~ if you do not want to
make the call. Control system
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Redialing
The control system stores the most recently
dialed phone numbers. This eliminates the
need to search through your entire phone
book.
X
Press button U or V repeatedly until
the message TEL appears in the
multifunction display.
X Press button 6.
The first number in the redial memory
appears in the multifunction display.
X Press button &
or * repeatedly until
the desired number or name appears in the
multifunction display.
X Press button 6.
The control system dials the selected
phone number. Driving systems
Introduction
This section describes the following driving
systems of your vehicle:
R Cruise control
R Distronic
R Distance warning function (only available
with Distronic)
R Hill-start assist system
R Rear-axle level control
R AIRMATIC
R All-wheel drive (4MATIC)
R Parktronic system
R Rear view camera
The

driving safety systems ABS, BAS, EBP and
ESP ®
are described in the “Safety and
security” section (Y page 63). Cruise control
The cruise control maintains the speed you
set for your vehicle automatically.
The

use of the cruise control is recommended
for driving at a constant speed for extended
periods of time.
The currently set speed or last set speed
(“Resume” function) appears in the status
indicator of the multifunction display:
R USA only: e.g. Cruise 55 Miles
R Canada only: e.g. ¯ 90 Km/h G
Warning!
The cruise control is a convenience system
designed to assist the driver during vehicle
operation. The driver is and must always
remain responsible for the vehicle’s speed
and for safe brake operation.
Only

use the cruise control if the road, traffic,
and weather conditions make it advisable to
travel at a constant speed.
R The use of the cruise control can be
dangerous on winding roads or in heavy
traffic because conditions do not allow safe
driving at a constant speed.
R The use of the cruise control can be
dangerous on slippery roads. Rapid
changes in tire traction can result in wheel
spin and loss of control.
R Deactivate the cruise control when driving
in fog.
The “Resume” function should only be
operated if the driver is fully aware of the
previously set speed and wishes to resume
this particular preset speed. 142
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G
Warning!
When the cruise control is braking, the brake
pedal is retracted (i.e. depressed
automatically). The pedals’ range of motion
must not be impeded by any obstacles:
R Do not place any objects in the footwell.
R Make sure that the floormats and carpets
are securely in place.
R Do not rest your foot underneath the brake
pedal, as it could otherwise be trapped.
You could otherwise cause an accident and
injure yourself and/or others. :
Setting current or higher speed
; Setting current or lower speed
= Canceling the cruise control
? Activating the cruise control or resuming
to last set speed
Activating cruise control You can activate the cruise control at a
vehicle speed above 20 mph (30 km/h).
You cannot activate the cruise control
R
when you brake
R when you have engaged the parking brake
R when the automatic transmission is in park
position P, reverse gear R, or neutral
position N
R the ESP ®
is switched off or has switched off
due to a malfunction The vehicle speed displayed in the
speedometer can briefly vary from the speed
setting for the cruise control system.
Setting current speed X
Accelerate or decelerate to the desired
speed.
X Briefly lift the cruise control lever in
direction of arrow : or press in direction
of arrow ;.
X Remove your foot from the accelerator
pedal.
i On uphill grades, the cruise control may
not be able to maintain the set speed. Once
the grade eases, the set speed will be
resumed.
On downhill grades, the cruise control
maintains the set speed by braking with the
vehicle’s brake system. In addition, on
longer downhill grades the automatic
transmission will downshift automatically.
Canceling cruise control X
Depress the brake pedal.
or
X Briefly push the cruise control lever in
direction of arrow =.
The last set speed is stored for later use.
The last stored speed is deleted from memory
when the engine is turned off.
The cruise control switches off automatically
when you depress the brake pedal or you
engage the parking brake.
The cruise control switches off automatically
and an acoustic warning will sound when
R the vehicle speed falls below 20 mph
(30 km/h)
R the ESP ®
is in operation
R the ESP ®
is switched off with the ESP ®
switch Driving systems
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R
the ESP ®
has switched off due to a
malfunction
R you shift the automatic transmission into
neutral position N while driving
Observe additional messages in the
multifunction display that may appear.
Depressing the accelerator pedal does not
deactivate the cruise control. After a brief
acceleration (e.g. for passing), the cruise
control will resume the last set speed.
Changing the set speed G
Warning!
Keep in mind that it may take a brief moment
until the vehicle has made the necessary
adjustments.
Increase
or decrease the set vehicle speed to
a value that the prevailing road conditions and
legal speed limits permit. Otherwise, sudden
and unexpected acceleration or deceleration
of the vehicle could cause an accident and/
or serious injury to you and others.
You can increase or decrease the set speed
in 1 mph (Canada: 1 km/h) increments or in
5 mph (Canada: 10 km/h) increments.
When you use the cruise control lever to
decelerate, the brake system will brake the
vehicle automatically if the engine’s braking
power does not brake the vehicle sufficiently.
Adjustment in 1 mph (Canada:
1 km/h) increments
i The set speed value is increased or
decreased in 1 mph (Canada: 1 km/h)
increments each time you lift or press the
cruise control lever up or down to the
resistance point. X
Increasing: Briefly lift the cruise control
lever
up to the resistance point in direction
of arrow :.
X Decreasing: Briefly press the cruise
control lever down to the resistance point
in direction of arrow ;.
X Release the cruise control lever.
The new speed is set and the vehicle will
accelerate or decelerate.
Adjustment in 5 mph (Canada:
10 km/h) increments
i The set speed value is increased or
decreased in 5 mph (Canada:

10 km/h)
increments each time you lift or press the
cruise control lever up or down past the
resistance point.
X Increasing: Briefly lift the cruise control
lever up past the resistance point in
direction of arrow :.
X Decreasing: Briefly press the cruise
control lever down past the resistance
point in direction of arrow ;.
X Release the cruise control lever.
The new speed is set and the vehicle will
accelerate

or decelerate. Keep in mind that
it may take a brief moment until the vehicle
has reached the set speed.
Setting stored speed (Resume
function) G
Warning!
The set speed stored in memory should only
be set again if prevailing road conditions and
legal speed limits permit. Possible
acceleration or deceleration differences
arising from returning to the preset speed
could

cause an accident and/or serious injury
to you and others. 144
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X
Briefly pull the cruise control lever in
direction of arrow ?.
If no speed is stored, the current speed is
set and stored.
X Remove your foot from the accelerator
pedal.
The last stored speed is deleted from memory
when the engine is turned off. Distronic
Safety notes When activated, the Distronic adaptive cruise
control increases the driving convenience
afforded
by the cruise control while traveling
on expressways and other major roadways.
R 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.
R If there is no vehicle directly ahead of you,
the Distronic will function in the same way
as standard cruise control ( Y page 142).G
Warning!
The Distronic requires familiarity with its
operational characteristics. We strongly
recommend that you review the following
information carefully before operating the
system. G
Warning!
When the Distronic is braking, the brake pedal
is retracted (i.e. depressed automatically).
The pedals’ range of motion must not be
impeded by any obstacles:
R Do not place any objects in the footwell.
R Make sure that the floormats and carpets
are securely in place.
R Do

not rest your foot underneath the brake
pedal, as it could otherwise be trapped. You could otherwise cause an accident and
injure yourself and/or others.
G
Warning!
The 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 responsibility for the vehicle’s speed,
distance to the preceding vehicle and, most
importantly, brake operation to ensure a safe
stopping distance, always remains with the
driver.
The Distronic cannot take street and traffic
conditions into account. Complex driving
situations are not always fully recognized by
the Distronic. This could result in wrong or
missing distance warnings. G
Warning!
The Distronic adaptive cruise control is not a
substitute for active driving involvement. It
does

not react to pedestrians or on stationary
objects, nor does it recognize or predict the
lane curvature or the movement of preceding
vehicles.
The Distronic can only apply 20% of the
maximum braking power of the vehicle.
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. G
Warning!
The Distronic cannot take road and traffic
conditions into account. Only use the
Distronic if the road, weather and traffic
conditions make it advisable to travel at a
constant speed. Driving systems
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G
Warning!
Use of the Distronic can be dangerous on
slippery roads. Rapid changes in tire traction
can result in wheel spin and loss of control.
The Distronic does not function in adverse
sight and distance conditions. Do not use the
Distronic during conditions of fog, heavy rain,
snow or sleet. G
Warning!
The Distronic cannot take weather conditions
into account. Switch off the Distronic or do
not switch it on if:
R roads are slippery or covered with snow or
ice. The wheels could lose traction while
braking or accelerating, and the vehicle
could skid.
R the Distronic system sensor cover is dirty
or visibility is diminished due to snow, rain
or fog, for example. The distance control
system functionality could be impaired.
Always pay attention to surrounding traffic
conditions even while the Distronic is
switched on. Otherwise, you may not be able
to recognize dangerous situations until it is
too late. This could cause an accident in which
you and/or others could be injured. G
Warning!
The “Resume” function should only be
operated if the driver is fully aware of the
previously set speed and wishes to resume
this particular preset speed. G
Warning!
Close attention to road and traffic conditions
is imperative at all times, regardless of
whether or not the Distronic is activated.
Use of the Distronic can be dangerous on
winding roads or in heavy traffic because
conditions do not allow safe driving at a
constant speed.
The Distronic will not react to stationary
objects in the roadway (e.g. a stopped vehicle
in a traffic jam or a disabled vehicle). The Distronic will also not respond to oncoming
vehicles.
Switch off the Distronic:
R
when changing from the left to the right
lane if vehicles are moving more slowly in
the left lane
R when entering a turn lane or highway off
ramp
R in complex driving situations, such as in
highway construction zones
In these situations, the Distronic will continue
to maintain the set speed unless deactivated.
The Distronic is designed and intended only
to maintain a set speed and keep a set
distance from moving objects in front of it.
i This device has been approved by the FCC
as a “Vehicular Radar System”. The radar
sensor is intended for use in an automotive
radar system only. Removal, tampering, or
altering 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.
Distronic displays in the speedometer When the Distronic is activated, one or two
cruise control speed segments come on
around set speed
:.146
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The vehicle speed displayed on the
speedometer can briefly vary from the speed
setting on the Distronic system.
When the Distronic detects a vehicle directly
ahead, the cruise control speed
segments
; appear in the speedometer.
These segments represent the difference
between the set speed of your vehicle : and
the speed of the preceding vehicle =.
If the Distronic calculates that there is a
danger of collision, the distance warning lamp
· in the instrument cluster comes on and
an intermittent warning sounds.
X Immediately apply the brakes to avoid a
collision.
Under no circumstances should the driver
await the intermittent warning sound
before braking.
The intermittent warning sound ceases and
the distance warning lamp · goes out
when the necessary distance to the vehicle
ahead is established again. G
Warning!
An intermittent warning sounds and the
distance warning lamp · in the instrument
cluster is illuminated if the Distronic system
calculates that the distance to the vehicle
ahead and your vehicle’s current speed
indicate that the Distronic will not be capable
of slowing the vehicle sufficiently to maintain
the preset following distance, which creates
a danger of a collision. Immediately brake the vehicle to increase
your distance to the preceding vehicle. The
warning sound is intended as a final caution
in which you should intercede with your own
braking inputs to avoid a potentially
dangerous situation. Do not wait for the
operation of the warning signal to intercede
with your own braking. This will result in
potentially dangerous emergency braking
which will not always result in an impact being
avoided.
Tailgating increases the risk of an accident.
G
Warning!
The Distronic brakes your vehicle with a
maximum deceleration of 6.5 ft/s 2
(2 m/s 2
).
This corresponds to approximately 20% of the
maximum deceleration of your vehicle.
You must also apply the brakes yourself to
avoid a collision. The Distronic brakes the
vehicle in an effort to restore the preset
distance or to maintain the set 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,
including the area under the brake pedal.
Objects 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.
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 and/or the distance warning function
are activated or deactivated.
i
To activate or deactivate the Distronic
system, see ( Y page 148) or see
(Y page 150).
To activate or deactivate the Distance
warning function, see (Y page 138). Driving systems
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X
Press button V or U repeatedly until
one of the following two displays appears
in the multifunction display.
Distronic deactivated When the Distronic is deactivated, you will
see the standard Distronic display in the
multifunction display.
:
Preceding vehicle, if detected
; Actual distance to the preceding vehicle
= Preset distance threshold to the
preceding vehicle
? Your vehicle
Distronic activated When the Distronic is activated
:, you will
see the set speed ; in the multifunction
display for approximately 5 seconds. The
following display appears in the multifunction
display. After approximately 5 seconds the currently
set speed ; appears in the status indicator
of the multifunction display:
DTR XXX Miles
Cruise control lever
The Distronic system is operated by means of
the cruise control lever. :
Setting current or higher speed
; Setting current or lower speed
= Deactivating the Distronic
? Activating the Distronic or resuming to
the last set speed
Activating Distronic You can activate the Distronic when the
vehicle speed is between 20 mph (30 km/h)
and 110 mph (180 km/h).
When the Distronic is activated, one or two
cruise control speed segments around the set
speed in the speedometer dial are
illuminated. The multifunction display will
show a message such as
DISTRONIC 55 MPH
(Canada: DISTRONIC 90 km/h).
After approximately 5 seconds the currently
set speed appears in the status indicator of
the multifunction display:
R
USA only: e.g. DTR 55 Miles
R Canada only: e.g. DTR 90 km/h
If the Distronic is not activated after the
cruise control lever is pulled in direction of
arrow ? (Y page 148), you will see the
message DISTRONIC Off in the
multifunction display.
In the following cases you cannot activate the
Distronic:
R up to 2 minutes after starting the engine
R when you brake
R when you have engaged the parking brake 148
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