Page 88 of 491

87 Safety and Security
Driving safety systems
Driving safety systems
In this section you will find information on
the following driving safety systems:
ABS (A
ntilock B
rake S
ystem)
BAS (B
rake A
ssist S
ystem)
ESP (E
lectronic S
tability P
rogram)
SBC (S
ensotronic B
rake C
ontrol)
4MATIC (Four Wheel Electronic
Traction System)
ABS
The Antilock Brake System (ABS) regulates
the brake pressure so that the wheels do
not lock during braking. This allows you to
maintain the ability to steer your vehicle.
The ABS is functional above a speed of
approximately 5 mph (8 km/h) indepen-
dent of road surface conditions.
On slippery road surfaces, the ABS will re-
spond even to light brake pressure.
The - indicator lamp in the instrument
cluster comes on when you switch on the
ignition. It goes out when the engine is run-
ning.
iIn winter operation, the maximum
effectiveness of the ABS, the BAS, the
ESP, SBC and 4MATIC is only achieved
with winter tires (M + S tires), or snow
chains as required.Warning!
G
The following factors increase the risk of ac-
cidents:
Excessive speed, especially in turns
Wet and slippery road surfaces
Following another vehicle too closely
The ABS, BAS, ESP, SBC and 4MATIC cannot
reduce this risk.
Always adjust your driving style to the pre-
vailing road and weather conditions.
Warning!
G
Do not pump the brake pedal. Use firm,
steady brake pedal pressure instead. Pump-
ing the brake pedal defeats the purpose of
the ABS and significantly reduces braking
effectiveness.
Page 119 of 491

118 Controls in detailLocking and unlocking1Strap in vehicles with folding bench
seat
Pull the tailgate down from the inside of
the vehicle using strap1.
Closing the tailgate from the outside
(vehicles without KEYLESS-GO*)
In vehicles with tailgate opening/closing
system* you can close the tailgate sepa-
rately from the outside using the tailgate
closing switch.1Tailgate closing switch
Press tailgate closing switch 1 briefly.
The tailgate closes.
If the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high), the closing procedure
is stopped and the tailgate reopens
slightly.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the cargo
compartment opening when closing the tail-
gate. Be especially careful when small chil-
dren are around.
Warning!
G
Only drive with the tailgate closed as,
among other dangers such as visibility
blockage, exhaust fumes may enter the ve-
hicle interior.iTo prevent an inadvertent lockout, do
not place the SmartKey in the cargo
compartment.
Vehicles with KEYLESS-GO*:
To prevent a possible inadvertent lock-
out, the tailgate will open automatically
if a SmartKey with KEYLESS-GO is rec-
ognized inside the vehicle or in the car-
go compartment.
iYou can also close the tailgate by hand.
Page 121 of 491

120 Controls in detailLocking and unlockingIf the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high), the closing procedure
is stopped and the tailgate reopens
slightly.
iYou can also close the tailgate by hand.iTo prevent a possible inadvertent lock-
out, the tailgate will open automatically
if a SmartKey with KEYLESS-GO is rec-
ognized in the rear shelf or inside the
vehicle.
Warning!
G
Monitor the closing procedure carefully to
make sure no one is in danger of being in-
jured. To prevent possible personal injury,
always keep hands and fingers away from
the cargo compartment opening when clos-
ing the tailgate. Be especially careful when
small children are around. To stop the clos-
ing procedure, do one of the following:
press the tailgate closing switch1
press the Š button on the SmartKey
with KEYLESS-GO
pull the remote tailgate switch (on the
driver’s door)
Even with the SmartKey with KEYLESS-GO
removed from the vehicle, the tailgate clos-
ing switch can be operated. Therefore, do
not leave children unattended in the vehicle,
or with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment may
cause an accident and/or serious personal
injury.
Warning!
G
Only drive with the tailgate closed as,
among other dangers such as visibility
blockage, exhaust fumes may enter the
vehicle interior.iIf the vehicle was previously centrally
locked, the tailgate will lock automati-
cally after closing it.
To confirm locking all turn signal lamps
flash three times.
Page 122 of 491

121 Controls in detail
Locking and unlocking
Closing the tailgate and locking the
vehicle from the outside (vehicles with
KEYLESS-GO*)
In vehicles with tailgate opening/closing
system* and KEYLESS-GO, you can close
the tailgate and lock the vehicle simulta-
neously from the outside using the
KEYLESS-GO locking/closing switch.
1KEYLESS-GO* locking/closing switch
Make sure you have SmartKey with
KEYLESS-GO with you.
Press switch 1 briefly.
All turn signal lamps flash three
times.
The locking knobs in the doors
move down.
The anti-theft alarm system is
armed.
If the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high), the closing procedure
is stopped and the tailgate reopens
slightly.
iYou can also close the tailgate by hand.iTo prevent a possible inadvertent lock-
out, the tailgate will open automatically
if a SmartKey with KEYLESS-GO is rec-
ognized in the rear shelf or inside the
vehicle.
Warning!
G
Monitor the closing procedure carefully to
make sure no one is in danger of being in-
jured. To prevent possible personal injury,
always keep hands and fingers away from
the cargo compartment opening when clos-
ing the tailgate. Be especially careful when
small children are around. To stop the clos-
ing procedure, do one of the following:
press the tailgate closing switch1
press the Š button on the SmartKey
with KEYLESS-GO
pull the remote tailgate switch (on the
driver’s door)
Even with the SmartKey with KEYLESS-GO
removed from the vehicle, the KEYLESS-GO
locking/closing switch can be operated.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious
personal injury.
Page 143 of 491

142 Controls in detailLightingManual headlamp mode
The low beam headlamps and parking
lamps can be switched on and off with the
exterior lamp switch.
Automatic headlamp mode
The following lamps switch on and off
automatically depending on the brightness
of the ambient light:
Low beam headlamps
Tail and parking lamps
License plate lamps
Side marker lamps
Turn exterior lamp switch to
positionU.
With the SmartKey in the starter switch
position1 or the KEYLESS-GO*
start/stop button pressed once, only
the parking lamps will switch on and off
automatically.
When the engine is running, the low
beam headlamps, the tail and parking
lamps, the licence plate lamps and the
side marker lamps will switch on and
off automatically.
iWith the SmartKey removed from the
starter switch or the engine turned off
with KEYLESS-GO* and the driver’s
door open, a warning sounds if the
parking lamps or low beam headlamps
are switched on.
The message
Switch off lamps
ap-
pears in the multifunction display.
Warning!
G
If the exterior lamp switch is set toU,
the headlamps may switch off unexpect-
edly when the system senses bright am-
bient light, for example light from
oncoming traffic.
the headlamps will not be automatically
switched on under foggy conditions.
To minimize risk to you and to others, acti-
vate headlamps by turning exterior lamp
switch toB when driving or when traffic
and / or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from positionU toB with the
vehicle at a standstill. Switching fromU
toB will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.
The automatic headlamp feature is only an
aid to the driver. The driver is responsible for
the operation of the vehicle's lights at all
times.
Page 145 of 491

144 Controls in detailLightingLocator lighting and night security illu-
mination
The locator lighting and the night security
illumination are described in the “Control
system” section, see (
page 171) and
(
page 172).
Fog lampsFront fog lamps
Switch on the low beam headlamps
(page 51).
Pull out the exterior lamp switch to first
stop.
The front fog lamps are switched on.
The green indicator lamp‡ in the
exterior lamp switch comes on
(page 24).
Push in the exterior lamp switch.
The front fog lamps are switched off.
The green indicator lamp‡ in the
exterior lamp switch goes out.
Warning!
G
In low ambient lighting or foggy conditions,
only switch from position U to B with
the vehicle at a standstill. Switching from
U to B will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.
iFog lamps will operate with the parking
lamps and / or the low beam head-
lamps on. Fog lamps should only be
used in conjunction with low beam
headlamps. Consult your State or Prov-
ince Motor Vehicle Regulations regard-
ing allowable lamp operation.iFog lamp cannot be switched on with
the exterior lamp switch in
positionU. For switching on the fog
lamps, turn exterior lamp switch to
positionB first.
Page 147 of 491
146 Controls in detailLightingHazard warning flasher
The hazard warning flasher can be
switched on at all times, even with the
SmartKey removed from the starter switch
or with the with the SmartKey with
KEYLESS-GO* removed from the vehicle.
The hazard warning flasher switches on
automatically when an air bag deploys.
The hazard warning flasher switch is locat-
ed on the upper part of the center console.
1Hazard warning flasher switchSwitching on the hazard warning
flasher
Press the hazard warning flasher
switch1.
All turn signal lamps are flashing.Switching off the hazard warning
flasher
Press the hazard warning flasher
switch1 again.
iWith the hazard warning flasher acti-
vated and the combination switch set
for either left or right turn, only the re-
spective turn signals will operate when
the ignition is switched on.
iIf the hazard warning flasher has been
activated automatically, press hazard
warning flasher switch1 once to
switch it off.
Page 158 of 491
157 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Menu8
Standard dis-
play
AUDIO
NAV*
Distronic*
Vehicle status
message mem-
ory
Settings
Trip computer
Telephone
(page 158)
(page 158)
(page 160)
(page 160)
(page 161)
(page 162)
(page 178)
(page 179)
Commands/submenusDigital speed-
ometer
Select radio
station
Activate
route guid-
ance
Call up set-
tings
Call up vehicle
malfunction,
warning and sys-
tem status mes-
sages stored in
memory
Reset to facto-
ry settings
Fuel consumption
statistics after
start
Load phone
book
Call up mainte-
nance system
display
Operate CD
player
Instrument
cluster sub-
menu
Fuel consumption
statistics since
the last reset
Search for
name in
phone book
Check tire
pressure*
Time/Date
submenu
Call up range
Check engine
oil level
Lighting sub-
menuVehicle sub-
menuConvenience
submenuDynamic seat*
submenu