Page 169 of 304

169 Operation
At the gas station
At the gas station
The fuel filler flap is located on the 
right-hand side of the vehicle towards the 
rear. Locking/unlocking the vehicle with 
the remote control automatically 
locks/unlocks the fuel filler flap.
Fuel filler flap
Remove the key from the steering lock.
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.
To prevent fuel vapors from escaping 
into open air, fully insert filler nozzle 
unit.
Only fill your tank until the filler nozzle 
unit cuts out – do not top up or overfill. 
Replace the fuel cap by turning it to the 
right.
Warning!
G
Gasoline is highly flammable and poisonous. 
It burns violently and can cause serious inju-
ry. Whenever you are around gasoline, avoid 
inhaling fumes and skin contact, extinguish 
all smoking materials. Never allow sparks, 
flame or smoking materials near gasoline! 
iUse only premium unleaded gasoline 
with a minimum Posted Octane Rating 
of 91 (average of 96 RON / 86 MON). 
Information on gasoline quality can 
normally be found on the fuel pump.
More information on gasoline can be 
found in the Factory Approved Service 
Products pamphlet.Warning!
G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas 
discharge. This could cause the gas to spray 
back out when removing the fuel pump noz-
zle, which could cause personal injury.
 
     
        
        Page 199 of 304

199 Practical hints
What to do if …?
Problem
Possible cause
Suggested solution
?
The yellow “CHECK ENGINE” 
malfunction indicator lamp 
comes on while driving.
There is a malfunction in:
The fuel management system
The ignition system
The emission control system
Systems which affect emissions
Such malfunctions may result in excessive 
emissions values and may switch the engine 
to its limp-home (emergency operation) 
mode.
Have the vehicle checked as soon as 
possible by an authorized 
Mercedes-Benz Center.
An on-board diagnostic connector is 
used by the service station to link the 
vehicle to the shop diagnostics sys-
tem. It allows the accurate identifica-
tion of system malfunctions through 
the readout of diagnostic trouble 
codes. It is located in the passenger 
compartment near the engine hood 
release.
The fuel cap is not closed tight.
Check the fuel cap.
Your gas tank is empty.
After refuelling, start the engine three 
or four times in succession. 
The limp-home mode is canceled. You do 
not need to have your vehicle checked.
<
The red seat belt warning lamp 
blinks for a brief period after 
starting the engine.
The warning lamp reminds you to fasten seat 
belts.
Fasten your seat belt. 
     
        
        Page 244 of 304

244 Practical hintsFlat tire
Detach the electric air pump.
Reinstall tire valve cap.
Stow the electrical plug and the air 
hose behind the flap and place the air 
pump back in the trunk.
Close the trunk lid.Storing collapsible spare wheel in 
wheel well
Before you can store the spare wheel with 
collapsible tire in the wheel well you have 
to release the air pressure of the tire.
Unscrew valve stem removal tool, 
which is part of the valve cap, from tire 
valve.
Using the valve stem removal tool, 
open tire valve slightly by turning the 
tire valve insert counterclockwise to 
release air pressure.
When the air pressure has been re-
leased, remove tire valve insert (pro-
tect it from dirt and sand) using the 
previously removed tire valve cap.
Once all air is out of the tire, and the 
tire has collapsed to its original shape, 
reinstall the tire valve insert and valve 
cap.
Place spare wheel in wheel well and 
secure it with the pump holder.
Tu rn pu m p hold er cl ockwi se  to its  st op.
Warning!
G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires 
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes 
etc.
Do not underinflate tires. Underinflated tires 
wear unevenly, adversely affect handling 
and fuel economy, and are more likely to fail 
from being overheated.
Do not overload the tires by exceeding the 
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s 
door opening). Overloading the tires can 
overheat them, possibly causing a blowout.
Warning!
G
To prevent possible injury when unscrewing 
air pump filler hose from tire valve after in-
flating the tire, use a rag since the tire valve 
could be hot.