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Attentiveness assistant
Principle The system can detect increasing inattentive‐
ness or tiring of the driver on long monotonous
drives, for example on motorways. In this situa‐
tion, it is recommended that you take a break.
Note WARNING
The system does not take your personal
responsibility from you when you are estimat‐
ing your physical condition. Increasing inatten‐
tion or fatigue might not be detected, or not in
good time. Danger of accidents. Make sure
that the drive is rested and alert. Adapt driving
style to the driving conditions.◀
Function The system is switched on every time the en‐
gine is started and cannot be switched off.
After the start of the drive, the system is adap‐
ted to the driver so that an increase in inatten‐
tion or fatigue can be detected.
This process considers the following criteria:▷Personal driving style, for example, steer‐
ing.▷Drive conditions, for example, time of day,
duration of drive.
The system is active from approxi‐
mately. 70 km/h, 43 mph and can display a rec‐
ommendation to take a break
Recommendation to take a break
With increasing inattention or tiredness of the
driver, an instruction is shown on the control
display with the recommendation to take a
break.
A recommendation to take a break will only be
displayed once during an uninterrupted trip.
After a break, at the earliest another break rec‐
ommendation may be displayed after approxi‐
mately 45 minutes.
System limits
The function may be restricted in situations
such as the following and no warning or a
wrong one is triggered:▷If the time is wrongly set.▷If the speed driven falls considerably below
70 km/h, 43 mph.▷For sporty driving style, for example, with
heavy acceleration or fast cornering.▷In active drive situations, for example, fre‐
quent lane change.▷With bad road conditions.▷With high side-wind.
PreCrash
Principle With the system from 30 km/h/20 mph critical
driving situations may occur, which could
cause an accident. In these situations, auto‐
matically preventative, protective measures
are taken to minimise the risk of accident.
Critical driving situations are, for example:
▷Full braking.▷Heavy understeering.▷Heavy oversteering.
When collision warning or front-end collision
warning with braking function is fitted, within
the limits of the system, threatened collisions
into vehicles in front or stationary vehicles are
detected.
Note WARNING
The system does not take your personal
responsibility from you. Critical situations can‐
not be detected reliably or in good time due to
limitations of the system. Danger of accidents.
Adapt driving style to the driving conditions.
Observe the traffic situation and intervene ac‐
tively if the situation warrants it.◀
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Function
After fastening the belt, the front belts are au‐
tomatically pretensioned once when driving
away.
When driving in critical situations, the following
individual functions become active as required:▷The front belts are automatically preten‐
sioned.▷The windows are automatically closed.▷The Glass Roof automatically closes.
After a critical driving situation without acci‐
dent, the front belts are released again. All
other systems can be put back into the desired
setting.
If the belt tension does not loosen automati‐
cally, stop the vehicle and open the seat belt
using the red button in the lock section. Fasten
the seat belt again before continuing your jour‐
ney.
PostCrash The system can automatically bring the vehicle
to a standstill in certain accident situations
without the involvement of the driver. The risk
of a further collision and its consequences can
thereby be reduced.
By depressing the brake pedal, the vehicle can
be decelerated much faster. The automatic
braking is interrupted as a result. By pressing
the accelerator pedal, automatic braking is also
interrupted.
After reaching a standstill, the brake is auto‐
matically triggered. Then secure the vehicle
against rolling away.
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Driving stability control systemsVehicle equipmentThis chapter describes all standard, national
and special equipment provided in the model
series. Equipment not available in the vehicle is
therefore also described, for example the se‐
lected special equipment or national version.
This also applies to safety-relevant functions
and systems. Comply with the relevant na‐
tional regulations when using the correspond‐
ing functions and systems.
Anti-lock Brake System,
ABS
ABS prevents the wheels from locking when
the brakes are applied.
Steering control is retained even in the event
of full braking, enhancing active road safety.
ABS is ready to operate each time the engine
is started.
Brake assist When brake is pressed quickly, this system au‐
tomatically applies maximum braking power
assistance. With full braking, this keeps the
braking distance as short as possible. It also
makes full use of the advantages offered by
ABS.
Maintain pressure on the brake during the en‐
tire brake application.
M Drive
Principle Individual settings can be made in two preset
configurations for the vehicle.When starting the engine, as standard an effi‐
cient vehicle state is active. M Drive is deacti‐
vated.
Overview
Configurations
The configurations are set as follows:▷"M Drive 1": relaxed, comfortable driving.▷"M Drive 2": sportive, dynamic driving.
Setting options
SymbolMeaning Dynamic Stability Control DSC, see
page 124, and M Dynamic Mode
MDM. Programs of the M Engine Dynam‐
ics Control, see page 78. Program of the Adaptive M chassis,
see page 126. Programs of the Servotronic, see
page 127. Drivelogic, see page 76: switching
modes and Drivelogic drive pro‐
grams. Views of the Head-Up Displays, see
page 94.
Configuring M Drive
The preset configurations can be individually
set.
On the Control Display:
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3.Selected desired adjustment option.4.Select the desired channel.
The individual settings are stored for the cur‐
rently used profile.
With M Drive activated a change is made im‐
mediately on the Control Display setting.
Activating/deactivating M Drive
Activating Press the relevant button on the steering
wheel.
▷Activate M Drive 1▷Activate M Drive 2
If in M Drive, DSC OFF or MDM is set, a mes‐
sage appears in the instrument cluster. This
message is operated by pressing the button
again.
Deactivating Press the relevant button on the steering
wheel again.
Indicator Lights
▷Indicator light illuminates: corre‐
sponding M Drive is activated.▷Indicator light flashes: M Drive
could not be activated. Anti-block‐
ing system ABS or Dynamic Stabil‐
ity Control DSC control drive stabil‐
ity directly.
Reactivate M Drive if the indicator
stops flashing.
Information
With activated M Drive individual settings out‐
side of the M Drive can also be changed, for
example, using buttons in the centre console.
That deactivates the M Drive.
To reactivate all the settings made on the Con‐
trol Display for M Drive, briefly press one of the
following buttons:▷▷
To accept the change settings in M Drive,
press the corresponding button for a long time.
Reset M Drive Individual settings can be reset to default val‐
ues.
1."Settings"2."M Drive 1" or "M Drive 2"3."Reset M Drive 1" or "Reset M Drive 2"4."Yes"
To interrupt resetting: "No"
Dynamic Stability Control,
DSC
Principle DSC prevents the driven wheels losing traction
when you pull away from rest or accelerate.
DSC is also able to detect unstable driving
conditions such as loss of traction at the rear
or vehicle slip over the front wheels. DSC re‐
duces engine output and applies the brakes at
individual wheels, helping, within the limits im‐
posed by the laws of physics, to keep the vehi‐
cle safely on course.
Note Adapt the driving style to the situation as it is
always the driver's responsibility to adapt a
suitable driving style.
Not even DSC can overcome the laws of phys‐
ics.
Do not limit the additional safety afforded by
this system by taking driving risks.
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WARNING
When driving with a roof load, for exam‐
ple with a roof rack, the higher centre of gravity
can mean that driving safety is no longer guar‐
anteed in critical driving situations. Danger of
accident or damage to property. Do not deacti‐
vate Dynamic Stability Control DSC when driv‐
ing with a roof load.◀
Overview
Button in the vehicle
DSC OFF button
Indicator and warning lights If indicator light is flashing: DSC is reg‐ulating the acceleration and braking
forces.
If indicator light is illuminated: DSC has failed.
Deactivating DSC: DSC OFF
General Driving stability during acceleration and cor‐
nering is restricted if DSC is deactivated.
To support the driving stability, re-activate
DSC as soon as possible.
Deactivating DSC Press and hold down the button – but for
no longer than approximately 10 seconds
– until the DSC OFF indicator light in the in‐
strument cluster is illuminated and DSC OFF is
displayed.
The DSC system is switched off.
Activating DSC Press the button.
The DSC OFF and DSC OFF indicator
lights are not illuminated.
Indicator and warning lights DSC OFF is displayed in the instrument cluster
when DSC is deactivated.
If indicator light is illuminated: DSC is
deactivated.
M Dynamic Mode
M Dynamic Mode allows driving with higher
longitudinal and transverse acceleration on dry
carriageways, but with restricted drive stability.
Only in the absolute limit of the range does the
system engage for stability purposes by re‐
ducing the engine power and by brakes ap‐
plied to the wheels. In this driving situation, ad‐
ditional steering corrections may be required.
WARNING
With activated M Dynamic Mode stabilis‐
ing engagements are only carried out to a re‐
duced degree. Danger of accident or damage
to property. Adapt to the traffic conditions. Ob‐
serve the traffic situation and intervene actively
if the situation warrants it. Do not move the
steering wheel with unnecessary force in case
of warnings.◀
To support the driving stability, re-activate
DSC as soon as possible.
Activating MDM Press the button briefly.
In the instrument cluster, the indicator
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Deactivating MDMPress the button.
Indicator lights MDM and DSC OFF no
longer illuminate.
Via M DriveOn the Control Display:1."Settings"2."M Drive 1" or "M Drive 2"3. Select the symbol.4."MDM"
To call up the desired M Drive with the selec‐
ted settings, press the corresponding button
on the steering wheel:
▷▷
A message appears in the instrument cluster.
This message is operated by pressing the but‐
ton again.
Deactivating MDM
Press the corresponding button 1 or button 2
on the steering wheel again.
M Dynamic Mode and the settings selected
under M Drive are deactivated.
Indicator and warning lights Indicator lights illuminate:
M Dynamic Mode is activated.
DSC indicator light also flashes:
M Dynamic Mode is regulating the driv‐
ing and braking forces.
Indicator lights illuminate:
M Dynamic Mode or DSC has failed.
Active M Differential
Principle The active M Differential blocks the rear axis
transmission steplessly, depending on the
drive situation. In so doing, even with the DSC
switched off and in M Dynamic Mode, spinning
of a single rear wheel is avoided and therefore
optimum traction is provided under all driving
conditions.
The driver is responsible for a driving style ap‐
propriate to the situation.
Adaptive M chassis PrincipleThe system reduces unwanted vehicle move‐
ments when a dynamic driving style is used or
on uneven roads.
Depending on the condition of the road and
the driving style, this enhances driving dynam‐
ics and driving comfort.
Programs Possibilities for adjusting the tuning of the
shock absorbers:▷"Comfort": comfort-oriented▷"Sport": balanced▷"Sport Plus": consistently sporty
Selecting program
Via M Drive
1."Settings"2."M Drive 1" or "M Drive 2"3. Select the symbol.4.Select the desired channel.Seite 126ControlsDriving stability control systems126
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Setting is immediately accepted with ac‐
tive M Drive.
To activate the desired M Drive with the selec‐
ted settings, press the corresponding button
on the steering wheel:
▷▷
Using the button
Press button until the desired program is
displayed in the instrument cluster.
Display in the instrument cluster Adaptive M chassis with selected pro‐
gram and activated display of driving
dynamics system statuses, see
page 86.
Drive-off assistant The system provides support when driving off
on upward inclines. It is not necessary to use
the parking brake for this.
1.Hold the vehicle in place by pressing the
foot brake.2.Release the foot brake and drive off with‐
out delay.
The vehicle is held for approximately 2 sec‐
onds after the foot brake has been released.
Depending on the vehicle's load or when tow‐
ing a trailer, the vehicle may roll backwards a
little.
Servotronic
Principle The Servotronic varies the steering force re‐
quired when steering, depending on the
speed. At low speeds the steering force is
heavily supported, in other words a slight force
is needed when steering With increasing
speed the support for the steering force is re‐
duced.
In addition, steering force is adapted according
to drive program, giving a sporty/direct or com‐
fortable steering response.
Programs Adjustment possibilities of the steering force:▷"Comfort": low.▷"Sport": medium.▷"Sport Plus": high.
Selecting program
Via M Drive On the Control Display:
1."Settings"2."M Drive 1" or "M Drive 2"3. Select the symbol.4.Select the desired channel.
Setting is immediately accepted with ac‐
tive M Drive.
To activate the desired M Drive with the selec‐
ted settings, press the corresponding button
on the steering wheel:
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Using the button
Press button until the desired program is
displayed in the instrument cluster.
Display in the instrument cluster Servotronic with selected program with
activated display of the system states
of the driving dynamics, see page 86.
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