Page 551 of 769

550 OperationAt the gas stationRefuelingThe fuel filler flap is located on the
right-hand side of the vehicle towards the
rear. Locking and unlocking the vehicle
with the SmartKey or the SmartKey with
KEYLESS-GO* automatically locks and un-
locks the fuel filler flap.
1To open fuel filler flap
2To insert fuel filler cap
3Holder
Shift the automatic transmission to
park positionP.
Engage the electronic parking brake.
Turn off the engine.
Vehicles with SmartKey: Remove the
SmartKey from the starter switch.
Vehicles with KEYLESS-GO*: Open the
driver’s door (this puts the starter
switch in position0, same as with the
SmartKey removed from the starter
switch). The driver’s door then can be
closed again.
Open the fuel filler flap by pushing at
the point indicated by arrow 1.
The fuel filler flap springs open.
Turn the fuel cap counterclockwise and
hold on to it until possible pressure is
released.
Warning!
G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious per-
sonal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the inha-
lation of fuel vapors are damaging to your
health.
i
In case that the central locking system does
not release the fuel filler flap, or the opening
mechanism is clamping, notify Roadside
Assistance or an authorized Mercedes-Benz
Center.
Page 599 of 769

598 OperationVehicle careAutomatic car wash
You can have your car washed in an auto-
matic car wash from the start.
To protect the filter system, switch the
automatic climate control to air recir-
culation mode (
page 496).
If the vehicle is very dirty, prewash it be-
fore running it through the automatic car
wash.When taking the vehicle through an auto-
matic conveyor type car wash, observe the
following instructions.
Vehicles with SmartKey:
With the vehicle at a standstill and the
ignition switched on shift the
automatic transmission to neutral
positionN.
If engaged, manually release the
electronic parking brake (
page 413).
Switch off the ignition and leave the
SmartKey in the starter switch.Vehicles with KEYLESS-GO*:
With the vehicle at a standstill, depress
the brake pedal and keep it pressed.
With the ignition switched on shift the
automatic transmission to park
positionP.
Release the brake pedal.
Remove the KEYLESS-GO start/stop
button from the starter switch
(page 366).
Insert the SmartKey with KEYLESS-GO
into the starter switch.
Switch on the ignition.
Depress the brake pedal.
Shift the automatic transmission to
neutral positionN.
Release the brake pedal.
If engaged, manually release the
electronic parking brake (
page 413).
Switch off the ignition and leave the
SmartKey with KEYLESS-GO in the
starter switch.
!
Do not clean your vehicle in an automatic
touchless car wash which uses caustic spray.
Otherwise the caustic spray will damage the
paint or ornamental moldings.
!
Make sure that the windshield wiper switch
is set to0 (
page 400). Otherwise, e.g. the rain
sensor could activate and cause the wipers to
move unintentionally. This may lead to vehicle
damage.
Due to the width of the vehicle, fold in exterior
rear view mirrors prior to running the vehicle
through an automatic car wash to prevent dam-
age to the mirrors.
Warning!
G
When leaving the SmartKey or SmartKey
with KEYLESS-GO* in the starter switch, do
not leave children unattended in the vehicle.
It is possible for children to switch on the
ignition which could result in unsupervised
use of vehicle equipment. Unsupervised use
of vehicle equipment could result in an
accident and/or serious personal injury.
Page 602 of 769
601 Operation
Vehicle care
Cleaning the driving systems sensors
The sensors are integrated in the front and
rear bumpers and cannot be seen from the
outside. They work with the following sys-
tems:
BAS Plus*
PRE-SAFE
® Brake*
Blind Spot Assist*
Park Assist*
Advanced Parking Guidance*
1Bumper area near sensors
Switch off the ignition (
page 365).
Use a mild car wash detergent, such as
Mercedes-Benz approved Car Sham-
poo, with plenty of water and a soft,
non-scratching cloth to clean the
bumper area near sensors.
!
To prevent scratches or damage to the sur-
face, never apply strong force and only use a
soft, non-scratching cloth when cleaning the
bumper area near sensors. Do not attempt to
wipe a dirty bumper with a dry cloth or sponge.
Page 611 of 769

610 Practical hintsWhat to do if …?Problem
Possible cause/consequence
Suggested solution
-
v
The yellow ABS malfunc-
tion indicator lamp and
the yellow ESP
® warning
lamp come on while the
engine is running and an
acoustic warning sounds.
ABS and ESP
® are switched off due to a
malfunction.
The BAS, EBP and PRE-SAFE
® are also
switched off.
The brake system is still functioning nor-
mally but without the ABS available.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Read and observe messages in the mul-
tifunction display (
page 622).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions increas-
es the risk of an accident.
0(USA only)!(Canada only)
The red indicator lamp
for the electronic parking
brake flashes and/or the
yellow warning lamp for
the electronic parking
brake is on.
The electronic parking brake is malfunction-
ing or defective.
Read and observe messages in the mul-
tifunction display (
page 622).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Page 612 of 769

611 Practical hints
What to do if …?
Problem
Possible cause/consequence
Suggested solution
;(USA only)3(Canada only)
The red brake warning
lamp comes on while the
engine is running and an
acoustic warning sounds.
There is insufficient brake fluid in the reser-
voir.
Risk of accident!
Carefully stop the vehicle in a safe loca-
tion or as soon as it is safe to do so.
Engage the electronic parking brake
(page 412).
Contact an authorized Mercedes-Benz
Center.
Do not add brake fluid! This will not
solve the problem.
Warning!
G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on. Do not add
brake fluid before checking the brake
system. Overfilling the brake fluid reservoir
can result in spilling brake fluid on hot en-
gine parts and the brake fluid catching fire.
You can be seriously burned.
!
If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.
Page 625 of 769

624 Practical hintsWhat to do if …?Text messagesDisplay
Possible cause/consequence
Possible solution
Apply Brake
to Shift
from 'P'
You have tried to Shift the automatic trans-
mission to drive position D, reverse gear R
or neutral positionN without stepping on
the brake.
Step on brake.
Cruise Control
- - - mph
(USA only)
You have tried to switch on cruise control
below a speed of 20 mph (30 km/h).
Drive faster than 20 mph (30 km/h) and save the speed.
Cruise Control
- - - kmh
(Canada only)
ESP
® is switched off.
Switch on ESP
® (page 74).
The automatic transmission is in park posi-
tion P, reverse gearR or neutral positionN.
Shift the automatic transmission to drive positionD
(page 417).
The system is overheated.
Wait until the system cools down.
The vehicle is secured in place by the elec-
tronic parking brake.
Release electronic parking brake (
page 412).
Cruise Control
Inoperative
Cruise control is malfunctioning.
Have cruise control checked by an authorized Mercedes-Benz
Center.
Page 627 of 769

626 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
DISTRONIC PLUS
Inoperative
DISTRONIC Plus* is malfunctioning.
BAS Plus* and PRE-SAFE
® Brake* are also
not available.
Contact an authorized Mercedes-Benz Center as soon as pos-
sible.
DISTRONIC PLUS
Override
You have depressed the accelerator pedal,
DISTRONIC Plus* is no longer controlling
the speed of the vehicle.
Release the accelerator pedal.
DISTRONIC PLUS
- - - mph
(USA only)
DISTRONIC PLUS
- - - kmh
(Canada only)
You have attempted to activate DISTRONIC
Plus* at a speed below 20 mph (30 km/h)
without the vehicle in front being displayed
in the multifunction display (
page 443).
Drive faster than 20 mph (30 km/h) and activate DISTRONIC
Plus* again.
ESP
® is switched off.
Switch on ESP
® (page 70).
The driver’s door is open and the drivers
seat belt is unbuckled.
Close the driver’s door and fasten your seat belt.
The hood is open.
Close the hood (
page 554).
The automatic transmission is in park posi-
tion P, reverse gearR or neutral positionN.
Shift the automatic transmission to drive positionD
(page 417).
The vehicle is secured in place by the elec-
tronic parking brake.
Release electronic parking brake (
page 412).
The system is overheated.
Wait until the system cools down.
Page 628 of 769
627 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Door Open
Vehicle Not in Park
You have opened the driver’s
door and the automatic trans-
mission is still in drive position
D, reverse gearR or neutral
positionN.
Before you leave the vehicle, make sure that the automatic transmission
is shift to park positionP (
page 417) and that the electronic parking
brake is engaged (
page 412).