engine MERCEDES-BENZ GLA SUV 2018 Manual Online

Pulling away and driving
XIf you want to pull away with Distance
Pilot DISTRONIC:remove your foot from the
brake pedal.
XBriefly pull the cruise control lever towards
you ?.
or
XIf Distance Pilot DISTRONIC is activated:
accelerate briefly.
Your vehicle pulls away and adapts its speed
to that of the vehicle in front. If no vehicle is
detected in front, your vehicle accelerates to the set speed.
The vehicle can also pull away when it is facing
an unidentified obstacle or is driving on a differ-
ent line from another vehicle. The vehicle then
brakes automatically. Be ready to brake at all
times.
If there is no vehicle in front, Distance Pilot
DISTRONIC operates in the same way as cruise
control.
If Distance Pilot DISTRONIC detects a slower-
moving vehicle in front, it brakes your vehicle. In
this way, the distance you have selected is main-
tained.
If Distance Pilot DISTRONIC detects a faster-
moving vehicle in front, it increases the driving
speed. However, the vehicle is only accelerated
up to the speed you have stored.
iDistance Pilot DISTRONIC is deactivated
when you depress the brake, except when the vehicle is stationary.
Selecting the drive program
Distance Pilot DISTRONIC supports a sporty
driving style when you select the S+drive pro-
gram (
Ypage 136) or the manual drive program
(Ypage 138). Acceleration behind the vehicle in
front or to the set speed is then noticeably more
dynamic. If you have selected the E(Mercedes-
AMG vehicles: C) drive program, the vehicle
accelerates more gently. This setting is recom-
mended in stop-and-start traffic.
Changing lanes
If when driving on multilane roads you wish to
change to the overtaking lane, Distance Pilot
DISTRONIC supports you if:
Ryou are driving faster than 45 mph (70 km/h)
RDistance Pilot DISTRONIC is maintaining the
distance to a vehicle in front
Ryou switch on the appropriate turn signal
RDistance Pilot DISTRONIC does not currently
detect a danger of collision
If these conditions are fulfilled, your vehicle is
accelerated. Acceleration will be interrupted if
changing lanes takes too long or if the distance
between your vehicle and the vehicle in front
becomes too small.
Stopping
If Distance Pilot DISTRONIC detects that the
vehicle in front is stopping, it brakes your vehicle
until it is stationary.
Once your vehicle is stationary, it remains sta-
tionary and you do not need to depress the
brake.
iAfter a time, the electric parking brake
secures the vehicle and relieves the service
brake.
iDepending on the specified minimum dis-
tance, your vehicle will come to a standstill at a sufficient distance behind the vehicle in
front. The specified minimum distance is set
using the control on the cruise control lever.
When Distance Pilot DISTRONIC is activated,
the transmission is shifted automatically to
position jif:
Rthe driver's seat belt is not fastened and the
driver's door is open.
Rthe engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function.
The electric parking brake secures the vehicle
automatically if Distance Pilot DISTRONIC is
activated when the vehicle is stationary and:
Ra system malfunction occurs.
Rthe power supply is insufficient.
If a malfunction occurs, the transmission may
also shift to position jautomatically.
Setting a speed
Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set.
XPress the cruise control lever up :for a
higher speed or down ;for a lower speed.
XTo adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly press
Driving systems159
Driving and parking
Z

the cruise control lever up:or down ;to
the pressure point.
The last stored speed increases or decreases
in 1 mph (1 km/h) increments.
XTo adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly press
the cruise control lever up :or down ;
beyond the pressure point.
The last stored speed increases or decreases in 5 mph (10 km/h) increments.
iDistance Pilot DISTRONIC is not deactivated
if you depress the accelerator pedal. If you
accelerate to overtake, Distance Pilot
DISTRONIC adjusts the vehicle's speed to the
last speed stored after you have finished over- taking.
Setting a specified minimum distance
You can set the specified minimum distance for
Distance Pilot DISTRONIC by varying the time
span between one and two seconds. With this
function you can set the minimum distance that
Distance Pilot DISTRONIC maintains to the vehi-
cle in front, dependent on vehicle speed. You
can see this distance in the multifunction dis-
play (
Ypage 168).
The specified minimum distance can be
changed while Distance Pilot DISTRONIC is
switched on or off.
iMake sure that you maintain the minimum
distance to the vehicle in front as required by
law. Adjust the distance to the vehicle in front
if necessary.
XTo increase: turn control=in direction ;.
Distance Pilot DISTRONIC then maintains a
greater distance between your vehicle and
the vehicle in front.
XTo decrease: turn control=in direction :.
Distance Pilot DISTRONIC then maintains a
shorter distance between your vehicle and
the vehicle in front.
Deactivating Distance Pilot DISTRONIC
There are several ways to deactivate Distance
Pilot DISTRONIC:
XBriefly press the cruise control lever for-
wards :.
or
XBrake, unless the vehicle is stationary
XBriefly press the cruise control lever for-
wards :.
or
XBrake, unless the vehicle is stationary
When you deactivate Distance Pilot DISTRONIC,
the Distance Pilot Off
message appears in
the multifunction display for approximately five
seconds.
iThe last speed stored remains stored until
you switch off the engine. Distance Pilot
DISTRONIC is not deactivated if you depress
the accelerator pedal.
Distance Pilot DISTRONIC is automatically deac-
tivated if:
Ryou engage the electric parking brake or if the
vehicle is automatically secured with the elec- tric parking brake
RESP®intervenes or you deactivate ESP®
Rthe transmission is in position j,kori
160Driving systems
Driving and parking

Tips for driving with Distance Pilot
DISTRONIC
General notes
Pay particular attention in the following traffic
situations:
RCornering, entering and exiting a bend: the
ability of Distance Pilot DISTRONIC to detect
vehicles during cornering is limited. Your vehi-
cle may brake unexpectedly or late.
RDriving on a different line: Distance Pilot
DISTRONIC may not detect vehicles which are
not driving in the middle of their lane. The dis-
tance to the vehicle in front will be too short.
ROther vehicles changing lanes: Distance Pilot
DISTRONIC has not detected the vehicle cut-
ting in yet. The distance to this vehicle will be
too short.
RNarrow vehicles: Distance Pilot DISTRONIC
has not yet detected the vehicle in front on
the edge of the road because of its narrow
width. The distance to the vehicle in front willbe too short.
RObstacles and stationary vehicles: Distance
Pilot DISTRONIC does not brake for obstacles
or stationary vehicles. If, for example, the
detected vehicle turns a corner and an obsta-cle or stationary vehicle is then revealed, Dis-
tance Pilot DISTRONIC will not brake for
them.
RDistance Pilot DISTRONIC may mistakenly
detect vehicles that are crossing your lane. If
you activate Distance Pilot DISTRO
NIC in the
following situations, the vehicle could pull
away unintentionally:
-At traffic lights with crossing traffic, for
example.
-With a vehicle ahead on the other side of an
intersection and the HOLD function active.
In such situations, brake if necessary. Distance
Pilot DISTRONIC will then be deactivated.
HOLD function
General notes
The HOLD function can assist the driver in the
following situations:
Rwhen pulling away, especially on steep slopes
Rwhen maneuvering on steep slopes
Rwhen waiting in traffic The vehicle is kept stationary without the driver
having to depress the brake pedal.
The braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.
Important safety notes
GWARNING
If the vehicle is only braked using the HOLD
function, the vehicle may roll away in the fol-
lowing situations when you leave the vehicle:
Rif there is a malfunction in the system or in the voltage supply
Rif the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant
Rif the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with or the battery is disconnected
There is a risk of an accident.
Always deactivate the HOLD function and
secure the vehicle against rolling away before
you leave it.
!When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations:
Rwhen towing the vehicle
Rin the car wash
Deactivating the HOLD function (
Ypage 163).
Activation conditions
You can activate the HOLD function if:
Rthe vehicle is stationary
Rthe engine is running or if it has been auto-
matically switched off by the ECO start/stop
function
Rthe driver's door is closed or your seat belt is
fastened
Rthe electric parking brake is released
RDistance Pilot DISTRONIC is deactivated
Rthe transmission is in position h,kori
on vehicles with automatic transmission
162Driving system s
Driving an d parking

Canceling start-off assist
XRemove your foot from the accelerator pedal.
XReactivate ESP®.
RACE START (Mercedes-AMG vehi-
cles)
Important safety notes
iRACE ST ART must not beused on normal
roads. RACE ST ART must only be activated
and used on dedicated road circuits, outside
of public road use.
iRACE ST ARTisonly availab le in
Mercedes‑AMG veh icles.
GWAR NING
If you use RACE ST ART, individual tires may
start to spinand the veh iclecould skid.
Dependin g on the selected ESP
®mode, there
is an increased risk of skiddin g and having an
acc iden t. Make sure that no persons, animals
or obstacles are within range of the veh icle.
RACE ST ART enables optimal acceleration from
a standing start. For this, a suitably high-grip
road surface isrequired and the veh icleand tires
must be ingood working order.
iObserve the safety notes on driving safety
systems (Ypage 60).
Be sure to read the safety notes and informa-
tion on ESP
®(Ypage 63).
Conditions for activation
You can activate RACE START if:
Rthe doors, hood and the trunk lidare closed.
Rthe engine isrunning and the transmission,
all- wheel drive clutch and the engine are at
operating temperature.
Rthe steering wheel is inthe straight-ahead
position.
Rthe veh icle isstationary and the brake pedal is
depr essed (left foot).
Rthe transmission is inposition h.
Rdrive program S,S+ orRACE isselected
(Ypage 131)
Activating RACE START
XDepress the brake pedal with your left foot
and keep it depressed.
XPull and hold both steering wheel paddle shift-
ers.
XThe RACE START Confirm: Paddle UPCancel: Paddle DOWNmessage appears in
the multifunction display.
XRelease both steering wheel paddle shifters.
iIf the activation conditions are no longer ful-
fille d,RACE START is canceled. The RACE
START Not Possible See Operator'sManualmessage appears in the multifunction
display.
XTo cancel: pull the left steering wheel paddle
shifter (Ypage 138).
or
XTo confi rm:pull the right steering wheel pad-
dle shifter (Ypage 138).
The RACESTARTAvailableDepressgaspedalmessage appears inthe multifunction
display.
iIf you donot depress the accelerator pedal
wit hin a few seconds, RACE START is can-
celed. The multifunction display shows the
RACE START Canceled
message.
XFully depress the accelerator pedal.
The engine speed is increased.
The RACE
STARTReleasebraketostartmessage appears in the multifunction display.
iIfyou do not release the brake pedal within
a short time, RACE START willbe canceled.
The multifunction display shows theRACE
START Canceledmessage.
XTake your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum acceler-
ation.
The RACE
STARTActivemessage appears in
the multifunction display.
RACE START is deactivated when the vehicle
reaches a speed of approximately 50 km/h.
RACE START is deactivated immediately if you
release the accelerator pedal during RACE
ST ART or ifany of the activation conditions are
no longer fulfilled. The RACE START Not Pos‐
sible See Operator's ManualorRACESTART Canceledmessage appears inthe mul-
tifunction display.
164Driving systems
Driving and parking

iIf RACE START is used repeatedly within a
short period of time, it is only available again
after the vehicle has been driven a certain
distance.
AMG adaptive sport suspension sys-
tem
General notes
The electronically controlled damping system
works continuously. This improves driving
safety and ride comfort.
The damping is tuned individually to each wheel
and depends on:
Ryour driving style, e.g. sporty
Rthe road surface condition, e.g. bumps
Ryour individual selection of SportorComfort
The suspension setting is adjusted using the
corresponding button in the center console.
iThe mode can also be set using the AMG
DYNAMIC SELECT controller (Ypage 131).
Each time you start the engine with the Smart-
Key or the Start/Stop button, Comfortmode is
activated. For further information about starting
the engine, see (
Ypage 124).
Sport mode
The firmer setting of the suspension tuning in
Sport mode ensures even better contact with
the road. Select this mode when employing a
sporty driving style, e.g. on winding country
roads.
XPress button :.
Indicator lamp ;lights up. You have selected
Sport mode. The
AMG Suspension System SPORT
mes-
sage appears in the multifunction display.
Comfort mode
In Comfort mode, the driving characteristics of
your vehicle are more comfortable. Select this
mode if you favor a more comfortable driving
style, but also when driving fast on straight
roads, e.g. highways.
XPress button :again so that indicator
lamp ;goes out.
You have selected Comfortmode.
The AMG
SuspensionSystemCOMFORTmes-
sage appears in the multifunction display.
4MATIC
!
Never tow the vehicle with one axle raised.
This may damage the differential. Damage of
this sort is not covered by the Mercedes-Benz
Limited Warranty. All wheels must remain
either on the ground or be fully raised.
Observe the instructions for towing the vehi-
cle with all wheels in full contact with the
ground.
4MATIC, together with ESP
®, improves the trac-
tion of your vehicle whenever a drive wheel
spins due to insufficient grip.
If you fail to adapt your driving style, 4MATIC can neither reduce the risk of accident nor override
the laws of physics. 4MATIC cannot take
account of road, weather and traffic conditions.
4MATIC is only an aid. You are responsible for
the distance to the vehicle in front, for vehicle
speed, for braking in good time and for staying in
your lane.
If a drive wheel spins due to insufficient grip:
ROnly depress the accelerator pedal as far as
necessary when pulling away.
RAccelerate less when driving.
iIn wintry driving conditions, the maximum
effect of 4MATIC can only be achieved if you
use winter tires (M+S tires), with snow chains
if necessary.
Driving systems165
Driving and parking
Z

Display in theassistance graphic
XSelec tth eAssistanc eGraphi cfunction
usin gth eon-boar dcompute r (Ypage 194).
Whe nDS Ris activated symbol :appears in
th eassistanc egraphics display.
Changin gth eset speed whil eth evehi-
cle is in motion
Whe nDS Ris activated, you can chang eth eset
speed to avalu ebetween 2mph and 11 mph
(Canada: between 4km/h and 18 km/h) whil e
th evehicle is in motion .
XTo increaseor decreas ein 1mp hincre-
ment s(Canada : 1km/h increments):
briefly press th ecruise contro llever to th e
pressure point, up :for a higher set speed or
down ;for a lowe rset speed.
The set valu eappears in th estatus indicator
of th emultifunction display.
Off-road program
General notes
iThe Off-road program is only available on
vehicles wit hth eON&OFFROA Dpackage.
The off-road program assist syou in drivin goff-
road. The engine's performanc echaracteristics
and th egearshiftin gcharacteristics of th eauto-
matic transmissio nare adapted fo rthis pur -
pose. ABS, ES P
®and ETSprograms especially
adapted to off-road drivin gare also activated.
Do no tuse th eoff-road program on roads that
are snow-covered or ic yor if you hav emounted
snow chain son your vehicle.
Fo rinformation on drivin goff-road, see
(
Ypage 151).
To activate/deactivate th eoff-road pro-
gram
XPress DYNAMI CSELECT butto n:
(Ypage 130) repeatedly until th eOff-road
drive program is selected.
The status icon of th eOff-road program is
shown in th emultifunction display.
Display in th eassistance graphic
Driving systems16 7
Driving an d parking
Z

Warning displays
:Segments on the left-hand side of the vehi-
cle
;Segments on the right-hand side of the vehi-cle
=Segments showing operational readiness
The warning displays show the distance
between the sensors and the obstacle. The
warning display for the front area is located on
the dashboard above the center air vents. The
warning display for the rear area is located on
the headliner in the rear compartment.
The warning display for each side of the vehicle
is divided into five yellow and two red segments.
Parking Assist PARKTRONIC is operational if yel-
low segments showing operational readiness =
light up.
The gear lever position or the transmission posi-
tion of the automatic transmission and the
direction in which the vehicle is rolling deter-
mine which warning display is active when the
engine is running.
Transmission posi-
tionWarning display
hFront area activated
k, ior the vehicle
is rolling backwardsRear and front areas
activated
jNo areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the vehi-
cle's distance from the obstacle. In addition,
warning tones are issued.
When the distance to the obstacle is sufficient,
you will hear an intermittent warning tone. The
shorter the distance to the obstacle, the shorter
the frequency of the intermittent warning tones
becomes. When the minimum distance is
reached, you hear a continuous warning tone.
Deactivating or activating Parking
Assist PARKTRONIC
:Indicator lamp
;Deactivates or activates Parking Assist
PARKTRONIC
If indicator lamp :is lit, Parking Assist
PARKTRONIC is deactivated.
iParking Assist PARKTRONIC is automati-
cally activated when you turn the SmartKey to position 2in the ignition lock.
170Driving systems
Driving and parking

Rthat are parallel to the direction of travel andat least 39.5 in (1.0 m)longer than your vehi-
cle
Rat right angles to the direction of travel and at
least 39.5 in (1.0 m) wider than your vehicle
When driving at speeds below 19 mph
(30 km/h), you will see parking symbol ;as a
status indicator in the instrument cluster. When
a parking space has been detected, an arrow
towards the right or the left also appears. Park-
ing Pilot only displays parking spaces on the
front-passenger side as standard. Parking
spaces on the driver's side are displayed as
soon as the turn signal on the driver's side is
activated. When parking on the driver's side,
this must remain activated until you confirm the use of Parking Pilot by pressing the abutton
on the multifunction steering wheel. The system
automatically determines whether the parking
space is parallel or at right-angles to the direc-
tion of travel.
A parking space is displayed while you are driv- ing past it, and until you are approximately 50 ft
(15 m) away from it.
Parking
GWARNING
If you leave the vehicle when it is only being
braked by Parking Pilot, it could roll away if:
Rthere is a malfunction in the system or in
the voltage supply.
Rthe electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
Rthe battery is disconnected.
Rthe vehicle is accelerated, e.g. by a vehicle
occupant.
There is a risk of an accident.
Before leaving the vehicle, always secure it
against rolling away.
iIf Parking Assist PARKTRONIC detects
obstacles, Parking Pilot brakes automatically
whilst the vehicle is being parked. You are
responsible for braking in good time.
XStop the vehicle when the parking space sym- bol shows the desired parking space in the
instrument cluster.
XShift the transmission to position k.
The Start Parking Pilot?Yes: OKNo:% message appears in the multifunction
display.
XTo cancel the procedure: press the%
button on the multifunction steering wheel or pull away.
or
XTo park using Parking Pilot: press thea
button on the multifunction steering wheel.
The Parking Pilot Active Accelerate
and BrakeObserve Surroundingsmes-
sage appears in the multifunction display.
XLet go of the multifunction steering wheel.
XBack up the vehicle, being ready to brake at all
times. When backing up, drive at a speed
below approximately 6 mph (10 km/h). Oth-
erwise, Parking Pilot is canceled immediately.
Parking Pilot brakes the vehicle to a standstill when the vehicle approaches the rear border
of the parking space.
Maneuvering may be required in tight parking spaces.
The Parking Pilot Active Select D
Observe Surroundingsmessage appears in
the multifunction display.
XShift the transmission to position hwhile
the vehicle is stationary.
Parking Pilot immediately steers in the other
direction.
The Parking Pilot Active Accelerate
and BrakeObserve Surroundingsmes-
sage appears in the multifunction display.
iYou will achieve the best results by waiting
for the steering procedure to complete before
pulling away.
XDrive forwards and be ready to brake at all
times.
Parking Pilot brakes the vehicle to a standstill when the vehicle approaches the front border
of the parking space.
Maneuvering may be required in tight parking spaces.
The Parking Pilot Active Select R
Observe Surroundingsmessage appears in
the multifunction display.
As soon as the parking procedure is complete,
the Parking Pilot Finished
message
Driving systems173
Driving and parking
Z

appears and a warning tone sounds. The vehicle
is now parked.
The vehicle is kept stationary without the driverhaving to depress the brake pedal. The braking
effect is canceled when you depress the accel-
erator pedal.
Parking Pilot no longer supports you with steer-
ing interventions and brake applications. When
Parking Pilot is finished, you must steer and
brake again yourself. Parking Assist
PARKTRONIC is still available.
Parking tips:
RThe way your vehicle is positioned in the park- ing space after parking is dependent on vari-
ous factors. These include the position and
shape of the vehicles parked in front and
behind it and the conditions of the location. It
may be the case that Parking Pilot guides you
too far into a parking space, or not far enough
into it. In some cases, it may also lead you
across or onto the curb. If necessary, you
should cancel the parking procedure with
Parking Pilot.
RYou can also preselect transmission position
h. The vehicle redirects and does not drive
as far into the parking space. Should the
transmission change take place too early, theparking procedure is canceled. A sensible
parking position can no longer be achieved
from this position.
Exiting a parking space
In order for Parking Pilot to support you when
exiting the parking space:
Ryou need to have parked using Parking Pilot.
Rthe border of the parking space must be highenough at the front and the rear. A curb stone
is too small, for example.
Rthe border of the parking space must not be
too wide, as the position of the vehicle must
not exceed an angle of 45° to the starting
position as it is maneuvered into the parking
space.
Ra maneuvering distance of at least 3.3 ft
(1.0 m) must be available.
Parking Pilot can assist you with exiting a park-
ing space only if you have parked the vehicle
parallel to the direction of travel using Parking
Pilot.
iIf Parking Assist PARKTRONIC detects
obstacles, Parking Pilot brakes automatically while the vehicle is exiting the parking space.
You are responsible for braking in good time.
XStart the engine.
XRelease the electric parking brake.
XSwitch on the turn signal in the direction you
will drive out of the parking space.
XShift the transmission to position hork.
The Start Parking Pilot?Yes: OKNo:% message appears in the multifunction
display.
XTo cancel the procedure: press the%
button on the multifunction steering wheel or
pull away.
or
XTo exit a parking space using Parking
Pilot: press the abutton on the multi-
function steering wheel.
The Parking Pilot Active Accelerate
and BrakeObserve Surroundingsmes-
sage appears in the multifunction display.
XLet go of the multifunction steering wheel.
XPull away, being ready to brake at all times. Do
not exceed a maximum speed of approx-
imately 6 mph (10 km/h) when exiting a park-
ing space. Otherwise, Parking Pilot is can-
celed immediately.
XDepending on the message or as required,
shift the transmission to position hork.
Parking Pilot immediately steers in the other
direction. The Parking Pilot Active
Accelerate and BrakeObserve Sur‐roundingsmessage appears in the multi-
function display.
iYou will achieve the best results by waiting
for the steering procedure to complete before
pulling away.
If you back up after activation, the steering
wheel is moved to the straight-ahead posi-
tion.
XDrive forwards and reverse as prompted by
the Parking Assist PARKTRONIC warning dis-
plays, several times if necessary.
Once you have exited the parking space com-
pletely, the steering wheel is moved to the
straight-ahead position. You hear a tone and the
Parking
PilotFinishedmessage appears in
the multifunction display. You will then have to
steer and merge into traffic on your own. Park-
ing Assist PARKTRONIC is still available. You can
take over the steering before the vehicle has
exited the parking space completely. This is
174Driving systems
Driving and parking

For further information on the COMAND con-
troller; see the digital COMAND operating
instructions.
Activating the 360° camera using
reverse gear
The 360° camera images can be automatically
displayed by engaging reverse gear.
XMake sure that the SmartKey is in position2
in the ignition lock.
XMake sure that the Activation by R gearfunction is selected in COMAND (see Digital
Operator's Manual).
XTo show the 360° camera image: engage
reverse gear.
The COMAND display shows the area behind
the vehicle in split screen:
Rvehicle with guide lines
Rtop view of the vehicle
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
RDisplays in the COMAND display
RDisplay with the PARKTRONIC display
Exiting 360° camera display mode
As soon as your vehicle exceeds a speed of
10 mph (16 km/h) with the function activated,
the function switches off. The COMAND display
switches back to the previously selected view.
You can also switch the display by selecting the & symbol in the display and pressing Wthe
COMAND controller to confirm.
ATTENTION ASSIST
General notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways. It is
active in the 37 mph (60 km/h) to 125 mph
(200 km/h) range. If ATTENTION ASSIST
detects typical indicators of fatigue or increas-
ing lapses in concentration on the part of the
driver, it suggests taking a break.
Important safety notes
ATTENTION ASSIST is only an aid to the driver. It
might not always recognize fatigue or increasing inattentiveness in time or fail to recognize them
at all. The system is not a substitute for a well-
rested and attentive driver.
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or not
occur at all:
Rif the length of the journey is less than approx-
imately 30 minutes
Rif the road condition is poor, e.g. if the surface
is uneven or if there are potholes
Rif there is a strong side wind
Rif you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration
Rif you are predominantly driving slower than
37 mph (60 km/h) or faster than 125 mph
(200 km/h)
Rif the time has been set incorrectly
Rin active driving situations, such as when you
change lanes or change your speed
ATTENTION ASSIST is reset when you continue
your journey and starts assessing your tiredness
again if:
Ryou switch off the engine
Ryou take off your seat belt and open the driv-
er's door, e.g. for a change of drivers or to
take a break
Displaying the attention level
You can have current status information dis-
played in the assistance menu (Ypage 193) of
the on-board computer.
XSelect the Assistance display for Attention
Assist using the on-board computer
(
Ypage 194).
180Driving systems
Driving and parking