Page 204 of 302

200 What you should know at the gas station
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
What you should know at the gas station
Fuel supply
Open flap by pushing near front (arrow). Turn fuel cap 
to the left and hold on to it until possible pressure in 
tank has been released, then remove cap. Failure to 
remove slowly could result in personal injury.Fuel
To prevent fuel vapors from escaping into open air, fully 
insert filler nozzle unit.
Only fill fuel tank until the filler nozzle unit cuts out — 
do not top up or overfill.
Leaving the engine running and the fuel cap open can 
cause the “CHECK ENGINE” lamp to illuminate, see 
page 204.
Fuel tank capacity approx. 21.1 US gal (80.0 l).
This includes approx. 2.6 US gal (10.0 l) reserve.
Use premium unleaded gasoline: 
Posted Octane Index 91 (Average of 96 RON/86 MON).
Wa r n i n 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!
Wa r n i n g !
Overfilling of fuel tank may result in creating 
pressure in the system which could cause a gas 
discharge such as the gas spraying back out upon 
removing the filler nozzle which could cause 
personal injury. 
     
        
        Page 225 of 302

221 Engine compartment
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index To  cl os e:
Lower hood and let it drop into lock from a height of 
approx. 1 ft. (30 cm), assisting with hands placed flat on 
edges of hood (3).
To avoid hood damage, please make sure that hood is 
fully closed. If not, repeat closing procedure. Do not 
push down on hood to attempt to fully close it.
Wa r n i n g !
To help prevent personal injury, stay clear of 
moving parts when the hood is open and the engine 
is running. Be sure the hood is properly closed 
before driving. When closing hood, use extreme 
caution not to catch hands or fingers.The radiator fan may continue to run another 
approximate 30 seconds or even restart after the 
engine has been turned off. Stay clear from fan 
blades.
The engine is equipped with a transistorized 
ignition system. Because of the high voltage it is 
dangerous to touch any components (ignition coils, 
spark plug sockets, diagnostic socket) of the 
ignition system
• with the engine running,
• while starting the engine,
• if ignition is “on” and the engine is turned 
manually.If you see flames, steam or smoke coming from the 
engine compartment, or if the coolant temperature 
gauge indicates that the engine is overheated, do 
not open the hood. Move away from vehicle and do 
not open the hood until the engine has cooled. If 
necessary, call a fire department. 
     
        
        Page 241 of 302

237 Battery
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Battery
Important!
Battery replacement information:
The maintenance-free battery is located in the trunk 
behind the right side cover panel.
The service life of the battery is dependent on its 
condition of charge. The battery should always be kept 
sufficiently charged, in order to last an optimum length 
of time.Therefore, we strongly recommend that you have the 
battery charge checked frequently, and corrected if 
necessary, especially if you use the vehicle less than 
approximately 200 miles (300 km) per month, 
mostly for short distance trips, or if it is not used for 
long periods of time.
Only charge a battery with a battery charger after the 
battery has been disconnected from the vehicle’s 
electrical circuit.
Always disconnect the battery negative lead first and 
connect last.
When removing and connecting the battery, always 
make sure that all electrical consumers are off and the 
key is in steering lock position 0. The battery must 
always be securely installed when the vehicle is in 
operation. During removal and installation always 
protect the disconnected battery positive (+) terminal 
with the cover attached to the battery.
While the engine is running the battery terminal clamps 
must not be loosened or detached, otherwise the 
generator and other electronic components will be 
damaged.
Wa r n i n g !
Failure to follow these instructions can result in 
severe injury or death.Never lean over batteries while connecting, you 
might get injured.Battery fluid contains sulfuric acid. Do not allow 
this fluid to come in contact with eyes, skin or 
clothing. In case it does, immediately flush affected 
area with water and seek medical help.A battery will also produce hydrogen gas, which is 
flammable and explosive. Keep flames or sparks 
away from battery, avoid improper connection of 
jumper cables, smoking etc. 
     
        
        Page 243 of 302

239 Jump starting
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hintsCar care Index Jump startingImportant!
A discharged battery can freeze at approx. +14°F
(–10°C). In that case, it must be thawed out before 
jumper cables are used. Attempting to jump start a 
frozen battery can result in it exploding, causing 
personal injury.
Jumper cable specifications:
• Minimum cable cross-section of 25 mm
2 or approx. 
2AWG
• Maximum length of 11.5 ft. (3.5 m).
If the battery is discharged, the engine should be started 
with jumper cables and the (12 V) battery of another 
vehicle.
Only use 12 V battery to jump start your vehicle. Jump 
starting with more powerful battery could damage the 
vehicle’s electrical systems, which will not be covered 
by the Mercedes-Benz Limited Warranty.
The battery is located in the trunk behind the right side 
cover panel.
Wa r n i n g !
Failure to follow these directions will cause 
damage to the electronic components, and can lead 
to a battery explosion and severe injury or death.Never lean over batteries while connecting or jump 
starting, you might get injured.Battery fluid contains sulfuric acid. Do not allow 
this fluid to come in contact with eyes, skin or 
clothing. In case it does, immediately flush affected 
area with water, and seek medical help if 
necessary.A battery will also produce hydrogen gas, which is 
flammable and very explosive. Keep flames or 
sparks away from battery, avoid improper 
connection of jumper cables, smoking etc.Read all instructions before proceeding.