Page 269 of 474

267 Operation
At the gas station
At the gas station
Refuelling
The fuel filler flap is located on the 
right-hand side of the vehicle towards the 
rear. Locking/unlocking the vehicle with 
the SmartKey or the SmartKey with 
KEYLESS-GO* automatically locks/un-
locks the fuel filler flap.
Turn off the engine
by turning the SmartKey to 
position0. Remove the SmartKey 
from the starter switch.
by pressing the KEYLESS-GO* 
start/stop button. Open the driv-
er’s door (with the driver’s door 
open, starter switch is in position 0, 
same as SmartKey removed from 
starter switch).
Open the fuel filler flap by pushing at 
the point indicated by the arrow. 
The fuel filler flap springs open.
Turn the fuel cap to the left and hold on 
to it until possible pressure is released. 
Take off the cap and set it in the recess 
on the fuel filler flap.
Only fill your tank until the filler nozzle 
unit cuts out – do not top up or over-
fill. 
Warning!
G
Gasoline is highly flammable and poisonous. 
It burns violently and can cause serious 
injury. Whenever you are around gasoline, 
avoid inhaling fumes and skin contact, 
extinguish all smoking materials. Never 
allow sparks, flame or smoking materials 
near gasoline! 
 
         
        
        
     
        
        Page 275 of 474

273 Operation
Engine compartment
One of the following messages will 
subsequently appear in the right multi-
function display:
Engine oil level
OK
Add 1.0 qt.to reach 
max.
oil level
(Canada: 
1.0 l
)
Add 1.5 qts.
to reach max.oil level
(Canada: 
1.5 l
)
Add 2.0 qts.to reach 
max.
oil level
(Canada: 
2.0 l
)
If necessary, add engine oil.
For adding engine oil see (
page 274).
For more information on engine oil, see the 
“Technical data” section (
page 431) and 
(
page 433).
Other display messages
If the SmartKey or the KEYLESS-GO* 
start/stop button is not in position2, the 
following message will appear:
Turn ignition on to
measure engine
oil level
Switch on the ignition (
page 36).If you see the message:
Observe
waiting time
If the engine is at operating tempera-
ture, wait five minutes before repeating 
the check procedure.
If the engine is not at operating temper-
ature yet, wait 30 minutes before re-
peating the check procedure.
If you see the message:
Engine oil level
Not when
engine on
Turn off the engine.
If the engine is at operating tempera-
ture, wait five minutes before checking 
oil.
If the engine is at operating tempera-
ture yet, you must wait 30 minutes be-
fore checking oil.
iIf you want to interrupt the checking 
procedure, press thek orj 
button on the multifunction steering 
wheel. 
         
        
        
     
        
        Page 318 of 474

316 OperationVehicle careWe have selected car-care products and 
compiled recommendations which are 
specially matched to our vehicles and 
which always reflect the latest technology. 
You can obtain Mercedes-Benz approved 
car-care products at an authorized 
Mercedes-Benz Center.
Scratches, corrosive deposits, corrosion or 
damage due to negligent or incorrect care 
cannot always be removed or repaired with 
the car-care products recommended here. 
In such cases it is best to seek aid at an au-
thorized Mercedes-Benz Center.
The following topics deal with the cleaning 
and care of your vehicle and give important 
“how-to” information as well as references 
to Mercedes-Benz approved car-care 
products.Power washer
When using a power washer for cleaning 
the vehicle, always observe manufactur-
er’s operating instructions.Tar stains
Quickly remove tar stains before they dry 
and become more difficult to remove. A tar 
remover is recommended.
Paintwork, painted body components
Mercedes-Benz approved Paint Care 
should be applied when water drops on the 
paint surface do not “bead up”, normally 
every three to five months, depending on 
climate and washing detergent used.
Mercedes-Benz approved Paint Cleaner 
should be applied if the paint surface 
shows signs of embedded dirt (i.e. loss of 
gloss).
Do not apply any of these products or wax 
if your vehicle is parked in the sun or if the 
hood is still hot.
Use the appropriate MB-Touch-Up Stick 
for quick and provisional repairs of minor 
paint damage (i.e. chips from stones, vehi-
cle doors, etc.).
iVehicles with KEYLESS-GO*:
If a door handle is hit by a strong jet of 
water, and a SmartKey with 
KEYLESS-GO* is in close proximity, i.e. 
within approximately 3 ft (1 m), the ve-
hicle could be inadvertently locked or 
unlocked.!Never use a round nozzle to 
power-wash tires. The intense jet of 
water can result in damage to the tire.
Always replace a damaged tire.
Always keep the jet of water moving 
across the surface. Do not aim directly 
at electrical parts, electrical connec-
tors, seals, or other rubber parts. 
         
        
        
     
        
        Page 319 of 474

317 Operation
Vehicle care
Engine cleaning 
Prior to cleaning the engine compartment, 
make sure to protect electrical compo-
nents and connectors from contact with 
water and cleaning agents.
Corrosion protection, such as MB Anticor-
rosion Wax, should be applied to the en-
gine compartment after every engine 
cleaning. Before applying, all control link-
age bushings and joints should be lubricat-
ed. The poly-V-belt and all pulleys should 
be protected from any wax.
Vehicle washing
Do not use hot water or wash your vehicle 
in direct sunlight. Only use a mild car wash 
detergent, such as Mercedes-Benz ap-
proved Car Shampoo.
Thoroughly spray the vehicle with a dif-
fused jet of water. Direct only a very weak 
spray towards the ventilation intake. Use 
plenty of water and rinse the sponge and 
chamois frequently.Rinse with clear water and thoroughly dry 
with a chamois. Do not allow cleaning 
agents to dry on the finish.
Due to the width of the vehicle, fold in ex-
terior rear view mirrors prior to running the 
vehicle through an automatic car wash to 
prevent damage to the mirrors. 
In the winter, thoroughly remove all traces 
of road salt as soon as possible.
When washing the underbody, do not for-
get to clean the inner sides of the wheels.Ornamental moldings
For regular cleaning and care of very dirty 
chrome-plated parts, use a chrome clean-
er.
Headlamps, side markers, tail lamps, 
turn signal lenses
Use a mild car wash detergent, such as 
Mercedes-Benz approved Car Shampoo, 
with plenty of water.
To prevent scratches, never apply strong 
force and only use a soft, non-scratchy 
cloth when cleaning the lenses. Do not at-
tempt to wipe dirty lenses with a dry cloth 
or sponge.
iVehicles with KEYLESS-GO*:
If a door handle is hit by a strong jet of 
water, and a SmartKey with 
KEYLESS-GO* is in close proximity, i.e. 
within approximately 3 ft (1 m), the ve-
hicle could be inadvertently locked or 
unlocked. 
         
        
        
     
        
        Page 321 of 474

319 Operation
Vehicle care
Clean the wiper blade inserts with a 
clean cloth and detergent solution.Window cleaning
Turn on the wipers and place them in a 
vertical position.
For information how to position the wipers 
in a vertical position, see “Replacing wiper 
blades” (
page 386).
Use a window cleaning solution on all 
glass surfaces.
An automotive glass cleaner is recom-
mended.
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the 
vehicle’s on-board electronics have 
status0) before cleaning the wiper blades. 
Otherwise the wiper motor could suddenly 
turn on and cause injury. !Fold the windshield wiper arms back 
onto the windshield before turning the 
SmartKey in the starter switch.
Hold on to the wiper when folding the 
wiper arm back. If released, the force 
of the impact from the tensioning 
spring could crack the windshield.
!The windshield wipers must be in a ver-
tical position before folding them away 
from the windshield. They could other-
wise damage the hood.Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the 
vehicle’s on-board electronics have 
status0) before cleaning the windshield. 
Otherwise the wiper motor could suddenly 
turn on and cause injury. 
!Fold the windshield wiper arm back 
onto the windshield before turning the 
SmartKey in the starter switch.
Hold on to the wiper when folding the 
wiper arm back. If released, the force 
of the impact from the tensioning 
spring could crack the windshield. 
         
        
        
     
        
        Page 344 of 474
342 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
P
Gear selector
lever to P
You have tried to start the engine with 
the KEYLESS-GO* start/stop button 
with the gear selector lever not in P.
Place the gear selector lever in position P.
You have tried to turn off the engine 
with the KEYLESS-GO* start/stop but-
ton with the gear selector lever not in 
P.You have opened the driver’s door 
while engine is running with the gear 
selector lever not in P. 
         
        
        
     
        
        Page 360 of 474
358 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
F
Key
Check battery
The batteries in the SmartKey with 
KEYLESS-GO* are discharged.
Change the batteries (
page 377).
Don’t forget
key
This message appears (for a maxi-
mum of 60 seconds) if the driver’s 
door is opened with the engine shut 
off and no SmartKey in the starter 
switch. 
Message is only a reminder.
Insert SmartKey in the starter switch.
Take the SmartKey with KEYLESS-GO* with 
you when leaving the vehicle.
KEYLESS GO
Check system
The KEYLESS-GO* system is mal-
functioning.
Visit an authorized Mercedes-Benz Center as 
soon as possible.
KEYLESS-GO
Drive to
workshop
The KEYLESS-GO* system is mal-
functioning.
Visit an authorized Mercedes-Benz Center as 
soon as possible. 
         
        
        
     
        
        Page 361 of 474

359 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
F
Key
not detected
The SmartKey with KEYLESS-GO* is 
not recognized while the engine is 
running because
the SmartKey with 
KEYLESS-GO* is not in the vehi-
cle
there is strong radio-frequency 
interference
Stop the vehicle as soon as it is safe to do so.
Search for the SmartKey with KEYLESS-GO* 
or continue to operate the vehicle with the 
SmartKey.
Otherwise the vehicle cannot be centrally 
locked nor can the engine be started again af-
ter the engine is stopped.
The SmartKey with KEYLESS-GO* is 
momentarily not recognized.
Change the position of the SmartKey with 
KEYLESS-GO* in the vehicle.
Operate the vehicle with the SmartKey if 
necessary.
Key
still
in vehicle
A SmartKey with KEYLESS-GO* left 
in the vehicle was recognized while 
locking the vehicle from the out-
side.
Take the SmartKey with KEYLESS-GO* out of 
the vehicle.
.
3rd brake lamp
The high mounted brake lamp is 
malfunctioning.
Visit an authorized Mercedes-Benz Center as 
soon as possible.
Brake lamp
Left
Auxiliary
lamp on!
The left brake lamp is malfunction-
ing. An auxiliary lamp has been 
brought into use.
Visit an authorized Mercedes-Benz Center as 
soon as possible.