Page 73 of 312

Controls
71Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
The selected distance is displayed in the instru-
ment panel.
Use good judgement to select the appro-
priate following distance given road con-
ditions, traffic, applicable laws and State driving
recommendations for safe following distance.
Otherwise, a violation of the law or risk of an
accident could result.<
Interrupting the system
Press the lever up or down and additionally
depress the brake if the vehicle is stationary.
The mark in the speedometer changes color
and the distance indicator goes out.
In addition, the system is interrupted:
>When the brakes are applied
>When transmission position D is disen-
gaged>When DTC is activated or DSC is deacti-
vated
>When DSC is activated
>When the safety belt is unbuckled and the
driver's door is opened while the vehicle is
stationary
>When the system has not detected objects
for an extended period, e. g. on a road with
very little traffic without road edge mark-
ings, or if the radar sensors are dirty, refer to
page72
If the system is interrupted, actively inter-
vene by braking and, if necessary, with
evasive maneuvers; otherwise, there is the dan-
ger of an accident occurring.<
Calling up the stored desired speed and
distance
While driving
Press button4, refer to page68.
All of the displays in the instrument panel lights
up.
While standing
Before leaving the vehicle with the engine
running, engage position P of the auto-
matic transmission and apply the parking brake.
Otherwise, the vehicle may begin to roll.<
If a vehicle detected ahead of you slows to a halt
and your vehicle is also brought to a halt by the
system:
>If the vehicle ahead of you drives away, your
vehicle accelerates automatically as long as
mark 1 for the desired speed in the speed-
ometer is green.
>If the vehicle ahead of you drives away when
mark 1 is orange, depress the accelerator
briefly or press button 4.
Rolling bars in the distance indicator 3
mean that the vehicle ahead of you has
driven away.
If you are standing behind a vehicle with your
brake pedal depressed and the system is deac-
tivated or interrupted: Distance 1, closest
Distance 2
Distance 3
Distance 4, furthest
This distance is set when you acti-
vate the system.
Page 75 of 312

Controls
73Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
caused by damage incurred during parking, for
example.
For US owners only
The transmitter and receiver units comply with
part 15 of the FCC/Federal Communications
Commission regulations. Operation is gov-
erned by the following:
FCC ID:
>OAYARS3-A
Compliance statement:
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
>This device must not cause harmful inter-
ference, and
>This device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modifications or changes to
these devices could void the user's authority to
operate this equipment.
System limits
Speed range
Best results are achieved when using the sys-
tem on well-developed roads and highways.
The desired speed can be selected between
20 mph/30 km/h and 110 mph/180 km/h.
The system can also be activated when station-
ary.
Comply with the legal speed limit in every situa-
tion when using the system.
Detection range
The detection capacity of the system and the
automatic braking capacity are limited. For
instance, two-wheeled vehicles driving ahead
of you might not be detected.
Because of the limitations to the detec-
tion capacity of the system, you should be
alert at all times so that you can intervene
actively, if necessary; otherwise, there is the
danger of an accident occurring.<
Deceleration
The system does not decelerate when a sta-
tionary obstacle is located in the same lane, e.g.
a vehicle at a red traffic light or at the end of a
traffic congestion.
The system also does not respond to:
>Pedestrians or similarly slow road users.
>Red traffic lights.
>Stationary objects.
>Cross traffic.
>Approaching traffic.
A warning might not be issued when
approaching a stationary or very slow-
moving obstacle. Take action yourself, other-
wise there is a risk of an accident.<
Page 77 of 312

Controls
75Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
the system is interrupted and the distance indi-
cator goes out until the pedal is fully released.
As soon as you fully release the accelerator, the
system will again control your cruising speed
and distance setting. While driving with the sys-
tem activated, resting your foot on the acceler-
ator pedal will cause the system not to brake
even if necessary. Be certain that floor mats or
other objects on the vehicle floor do not inter-
fere with movement of the accelerator pedal.<
While active cruise control is capable of
braking your vehicle automatically when
you approach a slower vehicle ahead, it is
important to be aware that the ability of the sys-
tem to apply the brakes is also limited, e. g.
when you reduce your desired speed sharply. It
uses only a portion of braking system capacity
and does not utilize the full capacity of the vehi-
cle braking system. Therefore, the system can-
not decrease your speed for large differences in
speed between your vehicle and the vehicle
ahead. Examples: when you approach a vehicle
traveling at a much lower speed than your own
speed such as approaching a toll booth or when
a much slower vehicle cuts in front of you at
close range.<
Page 79 of 312
Controls
77Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Tachometer
Do not operate the engine with the needle in the
red overspeed zone of the gauge, refer to arrow.
At high revs in this range, the flow of fuel is
interrupted to protect the engine.
Coolant temperature
Should the coolant, and with it the engine
become too hot, a warning lamp lights up. In
addition, a message appears on the Control
Display.
Checking coolant level, refer to page255.
Engine oil temperature*
When the engine is at operating temperature,
the engine oil temperature is between approx.
1707/806 and approx. 2507/1206.
When the engine oil temperature is too high, a
warning lamp lights up in the instrument panel.
Energy control*
Displays the current fuel consumption. This
allows you to see whether your current driving
style is conducive to fuel economy with mini-
mum exhaust emissions.
Page 81 of 312

Controls
79Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Opening the computer via iDrive
1."Vehicle Info"
2."Onboard info" or "Trip computer"
Displays on the "Onboard info":
>Cruising range
>Distance from destination
>Estimated time of arrival if:
>Entering a distance manually in the com-
puter, see below.
>A destination was entered in the naviga-
tion system
*, refer to page149.
Displays on the "Trip computer":
>Departure time
>Trip duration
>Trip distance
Both displays show:>The average speed and
>The average fuel consumption.
Resetting the fuel consumption and
speed
You can reset the values for the average speed
and average fuel consumption:
1.Select the respective menu item and press
the controller.
2.To confirm your selection, press the con-
troller again.
Resetting the trip computer
You can reset all values:
1."Vehicle Info"
2."Trip computer"
3."Reset"
Service requirements
The remaining driving distance and the date for
the next maintenance are displayed briefly with
the ignition switched on.
To determine the extent of maintenance
required, you can also display the remaining
distance or the service date individually in the
instrument panel.
Page 83 of 312

Controls
81Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Displaying service requirements
1Knob for selecting display
2Service requirements
3Engine oil
4Legally mandated inspections
*
5Front brake pads6Rear brake pads
7Brake fluid
The sequence of the displayed maintenance
items can vary. First the data for the next main-
tenance are displayed.
More information
Detailed information on service
requirements
More information on the scope of service
required can be displayed on the Control Dis-
play.
1."Vehicle Info"
2."Vehicle status"
3."Service required"Required maintenance procedures and legally
mandated inspections are displayed.
You can request more detailed information on
every entry:
Select the entry and press the controller.
To exit from the menu:
Move the controller to the left.
Symbols
No service is currently required.
The deadline for service or a legally man-
dated inspection is approaching. Please
arrange a service appointment.
The service deadline has already passed.
Page 85 of 312

Controls
83Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Indicator and warning lamps
The indicator and warning lamps can light up in
different combinations and colors.
means that a Check Control message has
been generated. The symbol continues to be
visible even when the Check Control message
disappears after a short time. The warning
lamps and text messages are stored and can be
displayed later, also refer to page84.
Explanatory text messages
Text messages at the upper edge of the Control
Display explain the meaning of the displayed
indicator and warning lamps.
For most Check Control messages, you can
view more information later, e.g. regarding the
cause of a malfunction and how to respond;
refer to the information provided below.In urgent cases, this information will be shown
as soon as the corresponding lamp comes on.
Exit the displayed information:
Move the controller to the left.
Hiding Check Control messages
Press the button in the turn signal lever up or
down.
Some Check Control messages are displayed
until the malfunctions have been rectified. They
cannot be hidden. If a number of malfunctions
occur simultaneously, they are displayed in
succession.
Other messages are automatically hidden after
approx. 20 seconds, but remain stored.
Page 87 of 312

Controls
85Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
3."Warning"
4.Press the controller.
The limit warning is switched on.
Settings on Control Display
Setting the time
The settings are stored for the remote control
currently in use.
1.Press the MENUbutton.
The main menu is displayed.
2."Settings"3."Time/Date"
4."Time:"
5.Turn the controller until the desired hours
are displayed, and then press the controller.
6.Turn the controller until the desired minutes
are displayed, and then press the controller.
The time is stored.Setting time format
1."Settings"
2."Time/Date"
3."Format:"
4.Select the desired format and press the
controller.
The time format is stored.
Setting date
The settings are stored for the remote control
currently in use.
1."Settings"
2."Time/Date"
3."Date:"
4.Turn the controller until the desired day is
displayed, and press the controller.
5.Create the necessary settings for the
month and year.
The date is stored.
Setting the date format
1."Settings"
2."Time/Date"