Page 253 of 506
251 Controls in detail
Driving systems
Front sensors
Rear sensorsMinimum distance
If the system detects an obstacle in this
range, all the distance warning segments
illuminate and you hear a warning signal. If
the obstacle is closer than the minimum
distance, the actual distance might no
longer be indicated by the system.Center
approx. 40 in (100 cm)
Corners
approx. 24 in (60 cm)
Center
approx. 48 in (120 cm)
Corners
approx. 32 in (80 cm)
!During parking maneuvers, pay special
attention to objects located above or
below the height of the sensors (e.g.
planters or trailer hitches). The
Parktronic system will not detect such
objects at close range and damage to
your vehicle or the object may result.
Ultrasonic signals from outside sourc-
es (e.g. truck air brakes, car wash or
jackhammers) may impair the opera-
tion of the Parktronic system.
Center
approx. 8 in (20 cm)
Corners
approx. 6 in (15 cm)
Page 254 of 506

252 Controls in detailDriving systemsWarning indicators
Visual signals indicate to the driver the rel-
ative distance between the sensors and an
obstacle. The warning indicator for the
front area is located above the center air
vents in the dashboard. The warning indi-
cator for the rear area is integrated in the
rear trim.Front area warning indicator1Left side of the vehicle
2Right side of the vehicle
3Readiness indicatorsEach warning indicator is divided into five
yellow and two red segments for either
side of the vehicle. The Parktonic system is
operational when the yellow readiness
indicators3 are illuminated.
The position of the gear selector lever de-
termines which warning indicators will be
activated.
As your vehicle approaches an object, one
or more segments will come on, depending
on the distance. When the seventh seg-
ment illuminates, you have reached the
minimum distance.
Front area: An intermittent acoustic
warning will sound as the first red dis-
tance segment illuminates and a con-
stant acoustic warning lasting a
maximum of two seconds will sound for
the second red distance segment. The
signal is canceled when the gear selec-
tor lever is placed in positionP or the
parking brake is activated.
Rear area: An intermittent acoustic
warning will sound as the first red dis-
tance segment illuminates and a con-
stant acoustic warning lasting a
maximum of two seconds will sound for
the second red distance segment. The
signal is canceled when the gear selec-
tor lever is placed in position D,P or
the parking brake is activated.
Gear selector le-
ver position
Warning indicator
D
Front area activated
R or N
Front and rear area
activated
P
Neither activated
Page 255 of 506

253 Controls in detail
Driving systems
Switching the Parktronic system
on/off
The Parktronic system can be switched off
manually.
The Parktronic switch is located in the low-
er part of the center console (
page 28).
1Parktronic switch
2Indicator lampSwitching off the Parktronic system
Press Parktronic switch 1.
Indicator lamp 2 comes on.
Switching on the Parktronic system
Press Parktronic switch 1 again.
Indicator lamp 2 goes out.
Parktronic system malfunction
If only the red distance segments illumi-
nates and an acoustic warning sounds,
there is a malfunction in the Parktronic
system. The Parktronic system will auto-
matically switch off after 20 seconds and
the indicator lamp in the Parktronic switch
comes on.
Have the Parktronic system checked
by an authorized Mercedes-Benz Cen-
ter as soon as possible.If only the red distance segments illumi-
nates and no acoustic warning sounds, the
Parktronic system sensors are dirty or
there is an interference from other radio or
ultrasonic signals. The Parktronic system
will automatically switch off after 20 sec-
onds and the indicator lamp in the Park-
tronic switch comes on.
Switch off the ignition (
page 33).
Clean the Parktronic system sensors
(page 351).
Switch on the ignition.
or
Check the Parktronic system operation
at another location to rule out interfer-
ence from outside radio or ultrasonic
signals.
iThe Parktronic system is automatically
switched on when the ignition is
switched on (
page 33).
Page 256 of 506
254 Controls in detailLoadingRoof rack*
1TrimPreparing roof rack installation
Open trim1 at the trim strips in the
roof.
Secure the roof rack according to man-
ufacturer’s instructions for installation.
Ski sack*
Unfolding and loading
Fold rear armrest down (arrow).
Swing cover1 down.
Warning!
G
Only use roof racks approved by
Mercedes-Benz for your vehicle model to
avoid damage to the vehicle. Follow manu-
facturer’s installation instructions.
!Load the roof rack in such a way that
the vehicle cannot be damaged while
driving.
Make sure
you can fully raise the tilt/sliding
sunroof* or tilt/sliding panel*
you can fully open the trunk
Page 257 of 506
255 Controls in detail
Loading
Open hook and loop strap1.
Pull ski sack into passenger compart-
ment and unfold.
From trunk, slide skis into ski sack.
Wrap strap around ski sack and rear
armrest.
Close clasp (arrows) and pull strap
tight to firmly secure skis.
Warning!
G
The ski sack is designed for up to four pairs
of skis. Do not load the ski sack with other
objects.
Always fasten the ski sack securely. In an
accident, an unfastened ski sack can cause
injury to vehicle occupants.
Page 259 of 506

257 Controls in detail
Loading
Removal of ski sack
For removal of the ski sack, we recom-
mend that you contact an authorized
Mercedes-Benz Center.
Split rear bench seat*
To expand the trunk, you can fold down the
left and right rear seat backrests.
The two sections can be folded down sep-
arately to enlarge the trunk.Folding the backrest forward
1Release handle
Warning!
G
Never drive vehicle with trunk open while
the ski sack is removed. Deadly carbon
monoxide (CO) gases may enter vehicle in-
terior, resulting in unconsciousness and
death.iTo prevent unauthorized persons from
access to the trunk, always close the
cover.
Warning!
G
When expanding the luggage compartment,
always fold the seat cushions fully forward.
Unless you are transporting cargo, the back-
rests must remain properly locked in the up-
right position.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle, and cause injury
to vehicle occupants unless the items are
securely fastened in the vehicle.
Always use the cargo tie down rings
(page 261).
!You must always release the seat cush-
ion and fold it up before folding the seat
backrests forward. The upholstery on
the seat backrest may otherwise be
damaged.
Page 261 of 506
259 Controls in detail
Loading
Swing the head restraint forward by
hand until it engages.
Expanding the cargo area*
Removing the rear seat cushions will pro-
vide you with a larger, flat cargo area.
Fold the seat cushions and the back-
rests forward (
page 257).
Remove the head restraints
(page 125).
Fold the backrest into the vertical posi-
tion.
1Release lever
Pull seat cushion release lever1 and
remove the seat cushion by pulling it
upward.
Warning!
G
Always lock backrest in its upright position
when rear seat bench is occupied, or the ex-
tended trunk compartment is not in use.
Check for secure locking by pushing and
pulling on the backrest.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle, and cause injury
to vehicle occupants unless the items are
securely fastened in the vehicle.
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when transporting cargo.
Page 263 of 506

261 Controls in detail
Loading
Cargo tie-down rings*
Four rings1 are located in the trunk.
Carefully secure cargo by applying
even load on all rings with rope of suffi-
cient strength to hold down the cargo.
Always follow loading instructions
(page 260).Rear seat
There is a cargo tie-down ring located on
each side of the footwell under the rear
seat.
Warning!
G
Always fasten items being carried as secure-
ly as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle and can cause in-
jury to vehicle occupants unless the items
are securely fastened in the vehicle.
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when transporting cargo. Put luggage or car-
go in the trunk if possible. Do not pile lug-
gage or cargo higher than the seat backs.
Do not place anything on the rear-window
shelf.
Never drive vehicle with trunk open. Deadly
carbon monoxide (CO) gases may enter ve-
hicle interior resulting in unconsciousness
and death.