Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the system to display a warning.
Autonomous braking function
If the driver does not react to the distance warn-
ing signal in a critical situation, COLLISION PRE-
VENTION ASSIST PLUS can assist with the
autonomous braking function.
The autonomous braking function is available in
the following speed ranges:
Rfrom 4 mph (7 km/h) to approx. 65 mph
(105 km/h) for moving objects
Rfrom 4 mph (7 km/h) to approx. 31 mph
(50 km/h) for stationary objects
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the Autonomous Braking Func-
tion to intervene.
If the autonomous braking function requires a
particularly high braking force, preventative
passenger protection measures (PRE-SAFE
®)
are activated simultaneously (Ypage 57).
Adaptive Brake Assist
General information
iObserve the "Important safety notes" sec-
tion (Ypage 66).
With the help of adaptive Brake Assist, the dis-
tance warning signal can detect obstacles that
are in the path of your vehicle for an extended
period of time.
If adaptive Brake Assist detects a risk of colli-
sion with the vehicle in front, it calculates the
braking force necessary to avoid a collision. If
you apply the brakes forcefully, adaptive Brake
Assist will automatically increase the braking
force to a level suitable for the traffic conditions.
Adaptive Brake Assist provides braking assis-
tance in hazardous situations at speeds above
4 mph (7 km/h). It uses radar sensor technology
to assess the traffic situation.
Up to a speed of approximately 155 mph
(250 km/h), Adaptive Brake Assist is capable of
reacting to moving objects that have already
been detected as such at least once over the
period of observation.
Up to a speed of approximately 44 mph
(70 km/h), Adaptive Brake Assist reacts to sta-
tionary obstacles. If adaptive Brake Assist demands particularly
high braking force, preventative passenger pro-
tection measures (PRE-SAFE
®) are activated
simulta neously (Ypage 57).
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if:
Ryou release the brake pedal.
Rthere is no longer any danger of a collision.
Rno obstacle is detected in front of your vehi-
cle.
Adaptive Brake Assist is then deactivated.
Important safety notes
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause Brake Assist to intervene.
If adaptive Brake Assist is not available due to a
malfunction in the radar sensor system, the
brake system remains available with full brake
boosting effect and BAS.
70Driving safet ysystem s
Safety
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-
tion (Ypage 66).
ESP
®monitors driving stability and traction, i.e.
power transmission between the tires and the
road surface.
If ESP
®detects that the vehicle is deviating from
the direction desired by the driver, one or more
wheels are braked to stabilize the vehicle. The
engine output is also modified to keep the vehi-
cle on the desired course within physical limits.
ESP
®assists the driver when pulling away on
wet or slippery roads. ESP®can also stabilize
the vehicle during braking.
ETS/4ETS (Electronic Traction System)
iObserve the "Important safety notes" sec-
tion (Ypage 66).
ETS traction control is part of ESP
®. On vehicles
with 4MATIC, 4ETS is part of ESP®.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is transfer-
red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP
®.
Important safety notes
GWARNING
If ESP
®is malfunctioning, ESP®is unable to
stabilize the vehicle. Additionally, further driv-
ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP
®checked at a
qualified specialist workshop.
If the å ESP
®OFF warning lamp lights up
continuously, then ESP®is deactivated.
If the ÷ ESP®warning lamp lights up contin-
uously, ESP®is not available due to a malfunc-
tion.
Observe the information on warning lamps
(
Ypage 261) and display messages which may be shown in the instrument cluster
(
Ypage 228).
Only use wheels with the recommended tire
sizes. Only then will ESP
®function properly.
Characteristics of ESP®
General information
If the ÷ ESP warning lamp goes out before
beginning the journey, ESP®is automatically
active.
If ESP
®intervenes, the ÷ESP®warning lamp
flashes in the instrument cluster.
If ESP
®intervenes:
XDo not deactivate ESP®under any circum-
stances.
XOnly depress the accelerator pedal as far as
necessary when pulling away.
XAdapt your driving style to suit the prevailing
road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle stops
moving. The engine starts automatically when
the driver wants to pull away again. ESP
®
remains in its previously selected status, e.g. if
ESP®was deactivated before the engine was
automatically switched off.
Deactivating/activating ESP®
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 66).
You can select between the following states of
ESP
®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP
®, ESP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
Driving safety systems71
Safety
Z
Important safety notes
Crosswind Assist does not work ifESP®is
swit ched off or deactivated because of a mal-
function.
Crosswind Assist
General information
Vehicle swit h MAGIC BODY CONTROL: informa-
tion on stabiliz ing the vehicle inthe event of
crosswin d (
Ypage 180).
St rong crosswin d gusts can impair the ability of
your veh icletodriv e straight ahead. The cross-
win ddriv ing assistance function integrated in
ESP
®noticeably reduces these impairments.
ESP®intervenes automatical lyaccording to the
dire ction and intensity of the crosswinds affect-
ing your veh icle.
ESP
®intervenes with stabiliz ing braking to
assist you inkeepin g the veh icle inthe lane.
Cros swind Assist isactive at veh iclespeeds
above 50 mph (80 km/h) when driving straight
ahead or cornering gently.
Important safety notes
Cros swind Assist does not work ifESP®is
swit ched off or deactivated because of a mal-
function.
EBD (electronic brake force distribu-
tion)
General information
EBD monitors and controls the brake pressure
on the rear wheels to improvedriving stabilit y
while braking.
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 66).
GWAR NING
If EBD ismalfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the
risk of skiddin g and an accident.
You should therefore adapt your driving style
to the different handlin g characteristics. Have
the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps (
Ypage 261) as wellas display
messages (Ypage 230).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety and
offers increased braking comfort. Inaddition to
the braking function, ADAPTIVE BRAKE also has
the HOLD function (
Ypage 178) and hill start
assist (Ypage 148).
PRE-SAFE®Brake
General information
PRE-SAFE®Brake can help you to minimize the
risk of a collision with a vehicle ahead or a
pedestrian, and reduce the effects of such a
collision. IfPRE-SAFE
®Brake has detected a risk
of collision, you willbe warned visually and
acoustically as wellas by automatic braking.
iPay attention to the important safety notes
in the "Driving safety systems" section
(
Ypage 66).
PRE ‑SA FE
®Brake is only availab le invehicles
with the Dr iving Assistance Plus package.
For PRE-SAFE
®Brake to assist you when driving,
the radar sensor system and the camera system
must be switched on and beoperational.
With the help of the radar sensor system and the
camera system, PRE-SAFE
®Brake can detect
obstacles that are in front of your vehicle for an
extended period of time.
In addition, pedestrians inthe path of your vehi-
cle can bedetected.
PRE-SAFE
®Brake detects pedestrians using
typical characteristics such as the body con-
tours and posture of a person standing upright.
iObserve the restrictions describe din the
"Important safety notes" section
(
Ypage 74).
Driving safety systems73
Safety
Z
Correct driver's seat position
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
Observe the following when adjusting steering
wheel :, seat belt ;and driver's seat =:
Ryou are as far away from the driver's air bag as
possible.
Ryou are sitting in a normal upright position.
Ryour thighs are slightly supported by the seat
cushion.
Ryour legs are not entirely stretched and you
can depress the pedals properly.
Rthe back of your head is supported at eye level
by the center of the head restraint.
Ryou can hold the steering wheel with your
arms slightly bent.
Ryou can move your legs freely.
Ryou can see all the displays in the instrument
cluster clearly.
Ryou should have a good overview of traffic
conditions.
Rthe seat belt is pulled snugly against the bodyand is routed across the center of your shoul-
der and across your hips in the pelvic area.
Further related subjects:
RAdjusting the seat electrically (Ypage 101).
RAdjusting the steering wheel electrically
(Ypage 115).
RFastening the seat belt correctly (Ypage 46).
RAdjusting the rear-view mirror and exterior
mirrors (Ypage 117).
RStoring the seat, steering wheel, exterior mir-
ror and head-up display settings with the
memory function (
Ypage 120).
Seats
Important safety notes
GWARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The seats can still be adjusted when there is no
SmartKey in the ignition lock.
GWARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(
Ypage 48) and "Children in the Vehicle"
(Ypage 59).
GWARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the event of an accident or when braking.
100Seats
Seats, steering wheel and mirrors
Adjusting from the rear compar tment
You can use th eoverride butto nto disable this
function (Ypage 65).
In order for th efront-passenger seat to be posi -
tione din chauffeur mode:
Rth epower suppl yor th eignition must be
switched on (Ypage 146)
Rthefront-passenger seat may no tbe occupied
Rth efront-passenger seat belt must no tbe
inserted int oth ebuckle
XTo select th e front-passenger seat :press
butto n: repeatedly until th eindicator lamp
in th ebutto nlights up.
The front-passenger seat is selected if th e
indicator lamp in th ebutto nlights up.
XPress butto n; forwards and hold it in this
position.
The seat moves forward.
The seat stops at th ethreshold of th earea for
chauffeur mode.
XReleas ebutto n;.
XPress and hold butto n; again until th efront-
passenger seat is in positio nfor chauffeur
mode.
The head restraint on th efront-passenger
seat folds forward. The seat moves forward.
The To vie wthe ext .mirror ,adjust
front-passenger sea tor remove thehea drestraint .message appear sin th e
multifunction display (Ypage 256).
iIf thefront-passenger seat is already at th e
threshold to th earea for th echauffeur mode,
th epositio nfor th echauffeur mod eis set
immediately.
iThe positio nfor chauffeur mod ecan be
saved or set usin gth ememory function of th e
rear seat (
Ypage 121). Fo rthis th eindicator
lamp on butto n: must be lit .
Adjusting fr om the driver's seat
In order for th efront-passenger seat to be posi -
tione din chauffeur mode:
Rth epower suppl yor th eignition must be
switched on (Ypage 146)
Rthefront-passenger seat may no tbe occupied
Rth efront-passenger seat belt must no tbe
inserted int oth ebuckle
XTo select th e front-passenger seat :press
butto n: repeatedly until th eindicator lamp
in th ebutto nlights up.
The front-passenger seat is selected if th e
indicator lamp in th ebutto nlights up.
XPress butto n; forwards and hold it in this
position.
The seat moves forward.
The seat stops at th ethreshold of th earea for
chauffeur mode.
XReleas ebutto n;.
XPress and hold butto n; again until th efront-
passenger seat is in positio nfor chauffeur
mode.
The head restraint on th efront-passenger
seat folds forward. The seat moves forward.
The To vie wthe ext .mirror ,adjust
front-passenger sea tor remove thehea drestraint .message appear sin th e
multifunction display (Ypage 256).
iIf thefront-passenger seat is already at th e
threshold to th earea for th echauffeur mode,
th epositio nfor th echauffeur mod eis set
immediately.
iThe positio nfor chauffeur mod ecanno tbe
store dor set wit hth edriver' sseat memory
function .
Seats107
Seats, steering wheel and mirrors
Z
Memory function
Important safety notes
GWARNING
If you use the memory function on the driver's side while driving, you could lose control of
the vehicle as a result of the adjustments
being made. There is a risk of an accident.
Only use the memory function on the driver's
side when the vehicle is stationary.
GWARNING
When the memory function adjusts the seat or steering wheel, you and other vehicle occu-
pants – particularly children – could become
trapped. There is a risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustment process is stopped.
GWARNING
Children could become trapped if they acti-
vate the memory function, particularly when
unattended. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The memory function can be used at any time,
even if the power supply is switched off.
Storing settings
The memory function is only available in vehicles
with the memory package.
With the memory function, you can store up to
three different settings, e.g. for three different
people. The following settings are stored as a single
memory preset:
Rseat, backrest, head restraint position and
contour of the backrest in the lumbar region
Ractive multicontour seat: side bolsters of the
backrest, shoulder of the backrest, contour of
the backrest, dynamic function level
Rseat heating: distribution of the heated sec-
tions of the seat cushion and backrest
Rdriver's side: position of the exterior mirrors
on the driver's and front-passenger sides
Rposition of the head-up display
XAdjust the seat accordingly (Ypage 101).
XOn the driver's side, adjust the steering wheel
(Ypage 115) and the exterior mirrors
(Ypage 117).
XPress memory button Mand then press one of
the memory position buttons 1,2or 3within
three seconds.
The settings are stored in the selected preset
position. A tone sounds when the settings
have been completed.
Calling up a stored setting
XPress and hold the relevant memory position
button 1,2or 3until the following compo-
nents are in the saved position:
RSeat
RSteering wheel
RExterior mirrors
RHead-up Display
iIf you release the storage position button,
the seat, steering wheel and mirror setting
functions stop immediately. Adjustment of
the active multicontour seat or the 4-way lum-
bar support is still carried out.
120Memory function
Seats, steering wheel and mirrors
or in similar situations, the automatic high-
beam headlamps will not be deactivated or
will be activated regardless. There is a risk ofan accident.
Always carefully observe the traffic conditions
and switch off the high-beam headlamps in
good time.
Adaptive Highbeam Assist Plus cannot take into
account road, weather or traffic conditions.
Adaptive Highbeam Assist Plus is only an aid.
You are responsible for adjusting the vehicle's
lighting to the prevailing light, visibility and traf- fic conditions.
In particular, the detection of obstacles can be
impaired if:
Rthere is poor visibility, e.g. due to fog, heavy
rain or snow
Rthere is dirt on the sensors or anything else
covering the sensors
Switching Adaptive Highbeam Assist
Plus on/off
XTo switch on: turn the light switch to the
à position.
XPress the combination switch forwards
beyond the pressure point (Ypage 125).
The _ indicator lamp on the multifunction
display lights up when it is dark and the light
sensor switches on the low-beam headlamps.
If you are driving at speeds above approx-
imately 16 mph (25 km/h):
The headlamp range is set automatically
depending on the distance between the vehi-
cle and other road users.
If you are driving at speeds above approx-
imately 19 mph (30 km/h) and no other road
users are detected:
The high-beam headlamps are switched on
automatically. The Kindicator lamp on the
instrument cluster also lights up.
If other road users are detected, the partial
high-beam headlamps are automatically
switched on.
If you are driving at speeds below approx-
imately 16 mph (25 km/h) or the roads are
adequately illuminated:
The partial high-beam or high-beam head-
lamps are switched off automatically. The
K indicator lamp on the instrument cluster goes out. The
_indicator lamp on the
multifunction display remains lit.
XTo switch off: move the combination switch
back to its normal position or move the light
switch to another position.
The _ indicator lamp on the multifunction
display goes out.
Headlamps fogged up on the inside
Certain climatic and physical conditions may
cause moisture to form in the headlamp. This
moisture does not affect the functionality of the
headlamp.
Interior lighting
Overview of interior lighting
Front overhead control panel
:p Left-hand front reading lamp
;|Automatic interior lighting control
=c Front interior lighting
?uRear interior lighting
ApRight-hand front reading lamp
Interior lighting127
Lights and windshield wipers
Z
Control panel in the grab handle (rear
compartment)
Switching on, on the corresponding vehicle side:
XPress button;.
Reading lamp :and the make-up lamp light
up.
Switching off, on the corresponding vehicle
side:
XPress button ;once.
The make-up lamp goes out.
XPress button ;twice.
Reading lamp :goes out.
Switching on, on both vehicle sides:
XPress button =.
The reading lamps :and the make-up lamps
go on.
Switching off, on both vehicle sides:
XPress button =.
Reading lamps :and the make-up lamps go
out.
Interior lighting control
General notes
In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the SmartKey is in position 2in
the ignition lock.
The color, brightness, zone and display light for
the ambient lighting are set using the multime-
dia system; see the Digital Operator's Manual.
The interior lighting control can be operated
using the front overhead control panel.
Automatic interior lighting control
XTo switch on or off: press the|button.
When the automatic interior lighting control is
activated, the button is flush with the over-
head control panel.
The interior lighting automatically switches on if
you:
Runlock the vehicle
Ropen a door
Rremove the SmartKey from the ignition lock
The interior light is activated for a short while
when the SmartKey is removed from the ignition
lock. This delayed switch-off can be adjusted via
the multimedia system (see Digital Operator's
Manual).
Manual interior lighting control
XTo switch the front interior lighting on or off: press the cbutton.
XTo switch the rear compartment interior
lighting on/off: press theubutton.
XTo switch the reading lamp on or off: press
the p button.
Replacing bulbs
The front and rear light clusters of your vehicle
are equipped with LED light bulbs. Do not
replace the LED light sources of your vehicle
yourself. Contact a qualified specialist work-
shop which has the necessary specialist knowl-
edge and tools to carry out the work required.
Lamps are an important aspect of vehicle safety.
You must therefore make sure that these func-
tion correctly at all times. Have the headlamp
setting checked regularly.
Windshield wipers
Switching the windshield wipers
on/off
!
Do not operate the windshield wipers when
the windshield is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windshield can scratch the glass
if wiping takes place when the windshield is
dry.
128Windshield wipers
Lights and windshield wipers