R
ESP ®
( E lectronic S tability P rogram)
( Y
page 71)R
EBD ( E lectronic B rake force D istribution)
( Y
page 73)R
ADAPTIVE BRAKE ( Y
page 73)R
PRE-SAFE ®
Brake ( Y
page 73)R
STEER CONTROL ( Y
page 75)
Important safety notes If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override
the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front, for vehicle speed, for braking in
good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and
weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Pay particular attention to the informa-
tion regarding tires, recommended minimum
tire tread depths etc. in the "Wheels and tires"
section ( Y
page 343).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible.
ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently. Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 66).
G WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 261) and dis-
play messages which may be shown in the
instrument cluster ( Y
page 228).
Braking X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking sit-
uation is over. X
To make a full brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions, and functions as a
reminder to take extra care while driving.
BAS (Brake Assist System)
General information BAS operates in emergency braking situations.
If you depress the brake pedal quickly, BAS
automatically boosts the braking force, thus
shortening the stopping distance.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 66).66
Driving safet y system s
Sa fety
Correct driver's seat position
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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 C , seat belt D and driver's seat
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
Do not rotate the head restraints of the front and
rear seats. Otherwise, you cannot adjust the
height and angle of the head restraints to the
correct position.
Using the fore-and-aft adjustment, adjust the
head restraint so that it is as close as possible to
your head.
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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.
G WARNING
If you adjust the seat height carelessly, you or
other vehicle occupants could be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem.
G WARNING
The seat belt does not offer the intended level
of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal
injury. Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
! To avoid damage to the seats and the seat
heating, observe the following information: R
keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible. R
if the seat covers are damp or wet, do not
switch on the seat heating. The seat heat-
ing should also not be used to dry the seats. R
clean the seat covers as recommended;
see "Interior care". R
do not transport heavy loads on the seats.
Do not place sharp objects on the seat
cushions, e.g. knives, nails or tools. The
seats should only be occupied by passen-
gers, if possible. R
when the seat heating is in operation, do
not cover the seats with insulating materi-
als, e.g. blankets, coats, bags, seat covers,
child seats or booster seats.
! Make sure that there are no objects in the
footwell under or behind the seats when mov-
ing the seats back. There is a risk that the
seats and/or the objects could be damaged.
Adjusting the seats
Vehicles with standard head restraints
or luxury head restraints
C
Head restraint height
D
Head restraint height
! Do not move the front-passenger seat fully
forwards if there are objects in the parcel net
in the front-passenger footwell. The objects
could otherwise be damaged.
Adjusting the front-passenger seat
The power supply or the ignition must be
switched on so that the front-passenger seat
can be selected ( Y
page 146).X
To select the front-passenger seat: press
button C repeatedly until the indicator lamp
in the button lights up.
When the indicator lamp in button C lights up,
for the front-passenger seat you can adjust: R
adjust the seat ( Y
page 101)R
seat heating ( Y
page 112)R
seat ventilation ( Y
page 113)R
the memory function to call up or save set-
tings ( Y
page 120).
Adjusting the front-passenger seat
from the rear
Important safety notes
G WARNING
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 the power
supply is switched off. G WARNING
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"
( Y
page 48) and "Children in the vehicle"
( Y
page 59).
G WARNING
The front-air bags for could also injure the
vehicle occupants in the front If the front
seats are positioned too close to the dash-
board or steering wheel. This poses an
increased risk of injury or even fatal injury.
Always adjust the front seats so that they are
as far from the front air bags as possible. Also
observe the notes on the correct adjustment
of the seats.
! Do not move the front-passenger seat fully
forwards if there are objects in the parcel net
in the front-passenger footwell. The objects
could otherwise be damaged.
i You can use the rear-compartment override
button to disable the setting of the front-
passenger seat from the rear ( Y
page 65).
Adjusting the rear seat
C
Selects rear-compartment seat
D
Head restraint height
Adjusting fr om th e rear compar tm ent
You can use th e override butto n to disable this
function ( Y
page 65).
In order for th e front-passenger seat to be posi -
tione d in chauffeur mode:R
th e power suppl y or th e ignition must be
switched on ( Y
page 146)R
th e front-passenger seat may no t be occupiedR
th e front-passenger seat belt must no t be
inserted int o th e buckleX
To select th e fr ont-passenger seat : press
butto n C repeatedly until th e indicator lamp
in th e butto n lights up.
The front-passenger seat is selected if th e
indicator lamp in th e butto n lights up.X
Press butto n D forwards and hold it in this
position.
The seat moves forward.
The seat stops at th e threshold of th e area for
chauffeur mode. X
Releas e butto n D .X
Press and hold butto n D again until th e front-
passenger seat is in positio n for chauffeur
mode.
The head restraint on th e front-passenger
seat folds forward. The seat moves forward.
The To vie w the ext . mirror , adjust
front-passenger sea t or remove the
hea d restraint . message appear s in th e
multifunction display ( Y
page 256).
i If th e front-passenger seat is already at th e
threshold to th e area for th e chauffeur mode,
th e positio n for th e chauffeur mod e is set
immediately.
i The positio n for chauffeur mod e can be
saved or set usin g th e memory function of th e
rear seat ( Y
page 121). Fo r this th e indicator
lamp on butto n C must be lit . Adjusting fr om th e driver's seat
In order for th e front-passenger seat to be posi -
tione d in chauffeur mode: R
th e power suppl y or th e ignition must be
switched on ( Y
page 146) R
th e front-passenger seat may no t be occupiedR
th e front-passenger seat belt must no t be
inserted int o th e buckle X
To select th e fr ont-passenger seat : press
butto n C repeatedly until th e indicator lamp
in th e butto n lights up.
The front-passenger seat is selected if th e
indicator lamp in th e butto n lights up.X
Press butto n D forwards and hold it in this
position.
The seat moves forward.
The seat stops at th e threshold of th e area for
chauffeur mode. X
Releas e butto n D .X
Press and hold butto n D again until th e front-
passenger seat is in positio n for chauffeur
mode.
The head restraint on th e front-passenger
seat folds forward. The seat moves forward.
The To vie w the ext . mirror , adjust
front-passenger sea t or remove the
hea d restraint . message appear s in th e
multifunction display ( Y
page 256).
i If th e front-passenger seat is already at th e
threshold to th e area for th e chauffeur mode,
th e positio n for th e chauffeur mod e is set
immediately.
i The positio n for chauffeur mod e canno t be
store d or set wit h th e driver' s seat memory
function .Seats 107
Seats, steering wheel and mirrors Z