75 Safety and Security
Occupant safety
2Hook
3Anchorage ring
Securely fasten hook2, which is part
of the tether strap, to anchorage
ring3.
Once the top tether anchorage hook is at-
tached, the child restraint itself can be se-
cured. Tighten the top tether strap
according to the child restraint manufac-
turer’s instructions.
Reinstall cover after removing the
tether strap.Child seat anchors – LATCH type
This vehicle is equipped with two LATCH
(L
ower A
nchors and T
ethers for CH
ildren)
type anchors (at each of the rear seats) for
the installation of a LATCH child seat with
the matching anchor fittings.
If you have not installed a child seat, the
LATCH anchor are covered with an uphol-
stery blend.
1Indicates the position of the anchors
2Anchors
3Upholstery blend
4Installation device
iFor safety reasons, make sure hook2
has attached to ring3 beyond the
safety catch, as illustrated.
Warning!
G
Vehicles with adjustable rear seats/bench*:
Never adjust the rear seat position after in-
stalling the child restraint. Adjusting the rear
seat position after installing the child re-
straint could damage the child restraint
and/or introduce undesirable slack into the
webbing and loosen or misposition the child
restraint, lessening the effectiveness of the
child restraint and thus increasing the
chance or severity of injury in an accident.
76 Safety and SecurityOccupant safety
Move rear power seats*/bench* to the
rearmost position (
page 117).
Fold upholstery blend3 upward.
Turn installation device4 to a vertical
position so that upholstery blend3
does not fold down.
Install child seat according to the man-
ufacturer’s instructions.
A solid connection is established be-
tween the child seat and the body of
the vehicle.
Do not adjust rear power seat*/bench*
position after installing child restraint.
Warning!
G
Vehicles with adjustable rear seats/bench*:
Never adjust the rear seat position after in-
stalling the child restraint. Adjusting the rear
seat position after installing the child re-
straint could damage the child restraint
and/or introduce undesirable slack into the
webbing and loosen or misposition the child
restraint, lessening the effectiveness of the
child restraint and thus increasing the
chance or severity of injury in an accident.iThe child seat must be firmly attached
in the right and left side anchor fittings.
Make sure the seat belt for the center
seat can operate freely with a child
seat installed.
Non-LATCH type child seats may also
be used and can be installed using the
vehicle’s seat belt system. Install child
seat according to the manufacturer’s
instructions.
Warning!
G
Children too big for child restraint systems
must ride in back seats using regular seat
belts. Position shoulder belt across chest
and shoulder, not face or neck. A booster
seat may be necessary to achieve proper
belt positioning for children from 41 lbs until
they reach a height where a lap/shoulder
belt fits properly without a booster.
Install child seat according to manufactur-
er’s instructions.
The child seat must be firmly attached in
right and left side anchors2.
An incorrectly mounted child seat may come
loose during an accident which could result
in serious injury or death to the child.
Damaged or impact damaged child seats or
child seat mounting fittings must be re-
placed.
Do not leave children unattended in the ve-
hicle, even if the children are secured in a
child restraint system.
77 Safety and Security
Occupant safety
Override switch for rear passenger compartment
You can disable select functions in the rear
passenger compartment for added safety
(for instance when you have children riding
in the rear passenger compartment).
You can disable the following functions in
the rear passenger compartment:
rear door window operation
(page 208)
adjustment of front passenger seat
from the rear* (
page 118)
cigarette lighter in rear (
page 251)The override switch is located on the driv-
er’s door.
1Override switch
Activating override switch
Slide override switch 1 to the right.
A dot becomes visible. The functions in
the rear are disabled.
Deactivating override switch
Slide override switch 1 to the left.
The functions in the rear are enabled
again.
Warning!
G
Activate the override switch when children
are riding in the back seats of the vehicle.
The children may otherwise injure them-
selves, e.g. by becoming trapped in the win-
dow opening.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock your vehicle. Do not leave children un-
attended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.iOperation of the rear door windows
with the switches located in the driver’s
door is still possible.
79 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)
4MATIC (Four Wheel Electronic Trac-
tion 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 ap-
proximately 5 mph (8 km/h) independent
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 (
page 24) comes on when you
switch on the ignition (
page 34). It goes
out when the engine is running.
iIn winter operation, the maximum ef-
fectiveness of the ABS, ESP
®, BAS and
4MATIC is only achieved with winter
tires (
page 327), 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
®, and 4MATIC cannot re-
duce 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.
80 Safety and SecurityDriving safety systemsBraking
At the instant one of the wheels is about to
lock up, a slight pulsation can be felt in the
brake pedal, indicating that the ABS is in
the regulating mode.
Keep firm and steady pressure on the
brake pedal while experiencing the pul-
sation.
Continuous, steady brake pedal pressure
yields the advantages provided by the ABS,
namely braking power and the ability to
steer the vehicle.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions and
functions as a reminder to take extra care
while driving.Emergency brake maneuver
Keep continuous full pressure on the
brake pedal.
For more information, see “Practical hints”
(
page 340).
BAS
The Brake Assist System (BAS) operates in
emergency situations. If you apply the
brakes very quickly, the BAS automatically
provides full brake boost, thereby poten-
tially reducing the braking distance.
Apply continuous full braking pressure
until the emergency braking situation is
over.
The ABS will prevent the wheels from
locking.
When you release the brake pedal, the
brakes function again as normal. The BAS
is then deactivated.
Warning!
G
The ABS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking or steering efficiency be-
yond that afforded by the condition of the
vehicle brakes and tires or the traction af-
forded. The ABS cannot prevent accidents,
including those resulting from excessive
speed in turns, following another vehicle too
closely, or hydroplaning. Only a safe, atten-
tive, and skillful driver can prevent acci-
dents. The capabilities of an ABS equipped
vehicle must never be exploited in a reck-
less or dangerous manner which could jeop-
ardize the user’s safety or the safety of
others.
Warning!
G
If the BAS is malfunctioning, the brake sys-
tem is still functioning normally, but without
the additional brake boost available that
BAS would normally provide in an emergen-
cy braking maneuver. Therefore, the braking
distance may increase.
81 Safety and Security
Driving safety systems
For more information, see “Practical hints”
section (
page 340).
ESP
®
The Electronic Stability Program (ESP
®) is
operational as soon as the engine is run-
ning and monitors the vehicle’s traction
(force of adhesive friction between the
tires and the road surface) and handling.
The ESP
® recognizes when a wheel is spin-
ning or if the vehicle starts to skid. By ap-
plying brakes to the appropriate wheel and
by limiting the engine output, the ESP
®
works to stabilize the vehicle. The ESP® is
especially useful while driving off and on
wet or slippery road surfaces. The ESP®
also stabilizes the vehicle during braking
maneuvers.
The ESP
® warning lamp v in the instru-
ment cluster flashes when the ESP
® is en-
gaged.
The ESP
® warning lamp v in the instru-
ment cluster comes on when you switch on
the ignition (
page 34). It goes out when
the engine is running.
Warning!
G
The BAS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking efficiency beyond that af-
forded by the condition of the vehicle brakes
and tires or the traction afforded. The BAS
cannot prevent accidents, including those
resulting from excessive speed in turns, fol-
lowing another vehicle too closely, or hydro-
planing. Only a safe, attentive, and skillful
driver can prevent accidents. The capabili-
ties of a BAS equipped vehicle must never
be exploited in a reckless or dangerous
manner which could jeopardize the user’s
safety or the safety of others.
Warning!
G
Never switch off the ESP
® when you see the
ESP
® warning lamp
v
flashing in the in-
strument cluster. In this case proceed as fol-
lows:
While driving off, apply as little throttle
as possible.
While driving ease up on the accelera-
tor.
Adapt your speed and driving style to
the prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP
® cannot prevent accidents result-
ing from excessive speed.
82 Safety and SecurityDriving safety systems
For more information, see “Practical hints”
(page 344).Switching off the ESP
®
To improve the vehicle’s traction, switch
off the ESP
® in driving situations where it
would be advantageous to have the drive
wheels spin and thus cut into surfaces for
better grip such as:
starting out on slippery surfaces and in
deep snow in conjunction with snow
chains
in sand or gravel
Warning!
G
The ESP
® cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The ESP
®
cannot prevent accidents, including those
resulting from excessive speed in turns, or
hydroplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The ca-
pabilities of an ESP
® equipped vehicle must
never be exploited in a reckless or danger-
ous manner which could jeopardize the us-
er’s safety or the safety of others.
iDistronic* is switched off when the
ESP
® engages.
iThe ESP
® will only function properly if
you use wheels of the recommended
tire size (page 426).
!Because of the ESP’s
® automatic oper-
ation, the engine and ignition must be
shut off (SmartKey in starter switch
position0 or1 or KEYLESS-GO
start/stop button* in position0 or1)
when
the parking brake is being tested on
a brake test dynamometer
the vehicle is being towed with the
front/rear axle raised
Active braking action through the ESP
®
may otherwise seriously damage the
brake system.
Warning!
G
The ESP
® should not be switched off during
normal driving other than in the circum-
stances described below. Disabling of the
system will reduce vehicle stability in stan-
dard driving maneuvers.
iDistronic* cannot be activated when
the ESP
® has been switched off.
83 Safety and Security
Driving safety systems
When you switch off the ESP
®
the ESP
® does not stabilize the vehicle
the engine output is not limited, which
allows the drive wheels to spin and
thus cut into surfaces for better grip
the traction control will still brake a
spinning wheel
the ESP
® continues to operate when
you are brakingThe switch is located on the upper part of
the center console.
1ESP
® off/on
Press ESP
® switch1 until the ESP
®
warning lampv in the speedometer
comes on.
The ESP
® is switched off.
Switching on the ESP
®
Press ESP
® switch1.
The ESP
® warning lampv in the in-
strument cluster goes out.
You are now again in normal driving
mode with the ESP
® switched on.
iWhen the ESP
® is switched off and one
or more drive wheels are spinning,
the ESP
® warning lampv in the in-
strument cluster flashes. However,
the ESP® will then not stabilize the ve-
hicle.
Warning!
G
When the ESP
® warning lampv is illumi-
nated continuously, the ESP
® is switched
off.
Adapt your speed and driving to the prevail-
ing road conditions and to the non-operating
status of the ESP
®.
!Avoid spinning of a drive wheel for an
extended period with the ESP
®
switched off. This may cause serious
damage to the drivetrain which is not
covered by the Mercedes-Benz Limited
Warranty.