Page 243 of 498

242 Controls in detailDriving systemsParktronic system (Parking assist)*
The Parktronic system is an electronic aid 
designed to assist the driver during park-
ing maneuvers. It visually and audibly indi-
cates the relative distance between the 
vehicle and an obstacle.
The Parktronic system is automatically 
activated when you switch on the ignition, 
release the parking brake, and placed the 
gear selector lever in positionD,R,orN.
The Parktronic system deactivates at 
speeds over approximately 11 mph 
(18 km/h). At lower speeds the Parktronic 
system turns on again.
The Parktronic system also deactivates 
when you place the gear selector lever in 
positionP or depress the parking brake 
pedal.The Parktronic system monitors the sur-
roundings of your vehicle with six sensors 
in the front bumper and four sensors in the 
rear bumper.
1Sensors in the front bumper
Range of the sensors
To function properly, the sensors must be 
free of dirt, ice, snow and slush. Clean the 
sensors regularly, being careful not to 
scratch or damage the sensors, see 
“Cleaning the Parktronic system* sensors” 
(
page 347).
Warning!
G
Parktronic is a supplemental system. It is 
not intended to, nor does it replace, the 
need for extreme care. The responsibility 
during parking and other critical maneuvers 
always rests with the driver.
Special attention must be paid to objects 
with smooth surfaces or low silhouettes 
(e.g. trailer couplings, painted posts, or road 
curbs). Such objects may not be detected by 
the system and can damage the vehicle.
The operational function of the Parktronic 
system can be affected by dirty sensors, 
especially at times of snow and ice, see 
“Cleaning the Parktronic system* sensors” 
(page 347).
Interference caused by other ultrasonic sig-
nals (e.g. working jackhammers, car wash or 
the air brakes of trucks) can cause the sys-
tem to send erratic indications, and should 
be taken into consideration.
Warning!
G
Make sure no persons or animals are in the 
area in which you are maneuvering. You 
could otherwise injure them. 
         
        
        
     
        
        Page 244 of 498
243 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. 8in (20cm)
Corners
approx. 6in (15cm) 
         
        
        
     
        
        Page 245 of 498

244 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 
determines 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 2 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 
distance segment illuminates and a 
constant acoustic warning lasting a 
maximum of 2 seconds will sound for 
the second red distance segment. The 
signal is canceled when the gear selec-
tor lever is placed in positionD, P or 
the parking brake is activated.
Gear selector 
lever position
Warning indicator
D
Front area activated
R or N
Front and rear area 
activated
P
Neither activated 
         
        
        
     
        
        Page 246 of 498

245 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 switch1.
Indicator lamp2 comes on.
Switching on the Parktronic system
Press Parktronic switch1 again.
Indicator lamp2 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 
Center 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 seconds and the indicator lamp in the 
Parktronic switch comes on.
Switch off the ignition (
page 36).
Clean the Parktronic system sensors 
(page 347).
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 36). 
         
        
        
     
        
        Page 247 of 498
246 Controls in detailLoadingRoof rack*
1Trim
Open trim1 at the trim strips in the 
roof.
Secure the roof rack according to 
manufacturer’s instructions for instal-
lation.
Warning!
G
Only use roof racks approved by 
Mercedes-Benz for your vehicle model to 
avoid damage to the vehicle.
Follow the manufacturer’s installation 
instructions. Otherwise, an improperly at-
tached roof rack system or its load could be-
come detached from the vehicle.
Do not exceed the maximum roof load of 
220 lb (100 kg).
Take into consideration that when the roof 
rack is loaded, the handling characteristics 
are different from those when operating the 
vehicles without the roof rack loaded.
!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
you can fully open the trunk 
         
        
        
     
        
        Page 248 of 498

247 Controls in detail
Loading
Loading instructions
The total load weight including vehicle 
occupants and luggage/cargo should not 
exceed the load limit or vehicle capacity 
weight indicated on the corresponding 
placard located on the driver’s door 
B-pillar.
The handling characteristics of a fully load-
ed vehicle depend greatly on the load dis-
tribution. It is therefore recommended to 
load the vehicle according to the illustra-
tions shown, with the heaviest items being 
placed towards the front of the vehicle.
Always place items being carried against 
front or rear seat backrests, and fasten 
them as securely as possible.
The heaviest portion of the cargo should 
always be kept as low as possible since it 
influences the handling characteristics of 
the vehicle.
Ski sack* (Canada only)
Unfolding and loading
Fold rear armrest down (arrow).
1Cover
2Catch
Pull catches2 in direction of arrows.
Open the cover1 downwards in the 
direction of the arrow.
Warning!
G
Always fasten items being carried as secure-
ly as possible fastening materials appropri-
ate for the weight and size of the load.
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.
 
         
        
        
     
        
        Page 249 of 498
248 Controls in detailLoading1Hook and loop fastener
Unfasten hook and loop fastener1.
Pull ski sack into passenger compart-
ment and unfold.
Open the front storage compartment in 
the rear center console (
page 256).
Remove the cup holder (
page 256).1Button
Open the trunk.
Press button1.
The flap opens in direction of arrow.
From trunk, slide skis into ski sack.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 251 of 498
250 Controls in detailLoadingUnloading and folding
Loosen both straps.
Disconnect hook1 from eye2.
Unload skis.
Close flap in trunk.
Fold and flatten ski sack lengthwise.
Place folded ski sack inside recess of 
backrest.
Fasten hook and loop fastener
Close ski sack compartment cover.Removal of ski sack
For removal of the ski sack, we recom-
mend that you contact an authorized 
Mercedes-Benz Center.
Cargo tie-down hooks
Four hooks are located in the trunk.
Carefully secure cargo by applying 
even load on all hooks with rope of suf-
ficient strength to hold down the cargo.
Always follow loading instructions 
(page 247).
Warning!
G
Never drive vehicle with trunk open while 
the ski sack is removed. Deadly carbon 
monoxide (CO) gases may enter vehicle 
interior, resulting in unconsciousness and 
death.iTo prevent unauthorized persons from 
access to the trunk, always close the 
cover.