
Problems with the engine
Problem Possible causes/consequences and
0050
0050Solutions The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Turn the SmartKey back to position 0in the ignition lock before
attempting to start the engine again. Alternatively, press the
Start/Stop button repeatedly until all indicator lamps in the
instrument cluster go out.
X Try to start the engine again (Y page 114). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (Y page 240).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center. The engine is not
running smoothly and
is misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz Center.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it. 116
DrivingDriving and parking

i
If you do not depress the accelerator
pedal within a few seconds, RACE START is
canceled. The multifunction display shows
the RACE START Canceled
RACE START Canceled message.
X Fully depress the accelerator pedal.
The engine speed is increased.
The RACE START Release brake to
RACE START Release brake to
start start message appears in the
multifunction display.
i If you do not release the brake pedal
within a few seconds, RACE START is
canceled. The multifunction display shows
the RACE START Canceled
RACE START Canceled message.
X Take your foot off the brake pedal while
keeping the accelerator pedal fully
depressed.
The vehicle pulls away at maximum
acceleration.
The RACE
RACE START START Active
Active message appears
in the multifunction display.
RACE START is deactivated when the vehicle
reaches a speed of approximately 50 km/h.
Drive program S+is activated. SPORT
handling mode remains switched on.
RACE START is deactivated immediately if
you release the accelerator pedal during
RACE START or if any of the activation
conditions are no longer fulfilled. The RACE RACE
START Not Possible
START Not Possible orRACE START
RACE START
Canceled
Canceled message appears in the
multifunction display.
i If RACE START is used repeatedly within
a short period of time, it is only available
again after the vehicle has been driven a
certain distance. Automatic drive program
Drive program Cis characterized by the
following:
R comfort-oriented engine and transmission
settings
R optimal fuel consumption resulting from
the transmission shifting up sooner R
the vehicle pulling away more gently in
forward and reverse gears, unless the
accelerator pedal is depressed fully
R increased sensitivity. This improves driving
stability on slippery road surfaces, for
example
R the transmission shifting up sooner; This
results in the vehicle being driven at lower
engine speeds and the wheels being less
likely to spin
Drive programs Sand S+are characterized
by the following:
R sporty engine and transmission settings
R the transmission shifting up later and
shifting down dynamically
R as a result of the later transmission
upshifts, the fuel consumption may be
higher
R if a period of dynamic driving is followed by
an extended phase with a constant
accelerator pedal position, the vehicle
shifts up to a higher gear. This optimizes
fuel consumption
If a gentle driving style is adopted in
automatic drive programs C/S/S+, the drive
program settings are adjusted to optimize
fuel consumption. Depending on the
operating conditions, the transmission shifts
to a higher gear. Shift ranges
Introduction In certain driving situations, it is
recommended that you restrict the shift
range. The set shift range appears in the
instrument cluster's multifunction display
(Y
page 119). The transmission only shifts to
the gear displayed in the instrument cluster.
When the maximum engine speed is reached,
the transmission shifts up a gear in the
automatic programs C/S/S+. Gear
restriction is correspondingly increased by
one gear. 122
AMG SPEEDSHIFT DCT 7-speed sports transmissionDriving and parking

Driving situation
0040
The braking effect of the engine can
be utilized in this position
0038
You can use the braking effect of
the engine on downhill gradients
and for driving:
R
on steep mountain roads
R in mountainous terrain
R in arduous conditions 0037
To use the braking effect of the
engine on extremely steep downhill
gradients and on long downhill
stretches Derestricting the shift range/shifting
up
X
Pull the right steering wheel paddle (UP).
The shift range is derestricted. If you are
driving in manual drive program M, the
transmission shifts up to the next gear.
Restricting the shift range/shifting
down X
Pull the left steering wheel paddle (DOWN).
The transmission shifts down one gear and
restricts the shift range to this gear.
If the engine speed in manual drive
program Mis too high, it is not possible to
shift down. If you pull the left-hand steering
wheel paddle shifter (DOWN)
(Y page 124), the two red segments in the
instrument cluster flash.
Clearing the shift range restriction X
Pull the right-hand steering wheel paddle
shifter (UP) until the number for the gear
disappears from the multifunction display.
or
X Use the E-SELECT lever to shift the
transmission to position D.
The transmission shifts from the current
shift range directly to D. Selecting the ideal shift range X
Pull the left-hand steering wheel paddle
shifter repeatedly until the function is
activated.
Depending on the selected drive program,
the transmission shifts to a gear which
allows ideal acceleration and deceleration.
To do this, the transmission shifts down
one or more gears. Manual drive program
i GT model: in manual drive program M,
the transmission shift and response times
are significantly shorter with sportier and
more aggressive gear changes.
In manual drive program M, you need to
change gear yourself using the steering wheel
paddle shifters (Y page 121). The
transmission only shifts down automatically
at low engine speeds depending on the
respective gear.
! In manual drive program M, the
transmission does not shift up
automatically even when the engine
limiting speed for the current gear is
reached. When the engine limiting speed is
reached, the fuel supply is cut to prevent
the engine from overrevving. Always make
sure that the engine speed does not reach
the red area of the tachometer and observe
the upshift indicator. There is otherwise a
risk of engine damage.
X To activate the manual drive program:
turn the drive program selector switch until
M appears in the instrument cluster's
multifunction display.
M lights up in red on the drive program
selector switch.
X To deactivate the manual drive
program: turn the drive program selector
switch and select another drive program. AMG SPEEDSHIFT DCT 7-speed sports transmission
123Driving and parking Z

Upshift indicator
The upshift indicator is a four-stage display
designed to assist you in sporty driving. The upshift indicator allows you to recognize
the ideal shift point for dynamic acceleration.
White segments 0043and yellow segment 0044
light up in succession from left to right.
When red segments 0087light up and the "up"
message appears in the multifunction
display, the ideal shift point has been
reached:
X Shift up using the right-hand steering wheel
paddle shifter (UP) as quickly as possible.
The vehicle shifts up to the next gear.
i If you continue to increase the engine
speed without shifting up in time, the fuel
supply is shut off to protect the engine. This
results in abruptly reduced acceleration.
Display for downshift override If the engine speed is too high, you cannot
shift down with the left steering wheel paddle
shifter. If you then pull the left steering wheel
paddle shifter, both red segments 0087light up
briefly. AMG button (SETUP)
With the AMG button, you can call up and
store a default drive program setting and the
default suspension tuning. X
To store: press and hold AMG button 0043
until you hear a tone.
X To call up: press AMG button 0043.
The stored drive program is selected.
X To display: briefly press AMG button 0043.
The multifunction display shows the SETUP
in the AMG menu (Y page 157). Refueling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and
explosion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before
refueling. G
WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
R Wash away fuel from skin immediately
using soap and water.
R If fuel comes into contact with your eyes,
immediately rinse them thoroughly with 124
RefuelingDriving and parking

clean water. Seek medical assistance
without delay.
R If fuel is swallowed, seek medical
assistance without delay. Do not induce
vomiting.
R Immediately change out of clothing which
has come into contact with fuel. G
WARNING
Electrostatic buildup can create sparks and
ignite fuel vapors. There is a risk of fire and
explosion.
Touch the vehicle body immediately before
opening the fuel filler cap. Any existing
electrostatic buildup is thereby discharged.
! Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the
ignition if you accidentally refuel with the
wrong fuel. Otherwise, the fuel will enter
the fuel system. Even small amounts of the
wrong fuel could result in damage to the
fuel system and the engine. The repair
costs are high. Notify a qualified specialist
workshop and have the fuel tank and fuel
lines drained completely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when refueling from a fuel can.
Otherwise, the fuel lines and/or injection
system could be blocked by particles from
the fuel can.
If you overfill the fuel tank, fuel could spray
out when the fuel pump nozzle is removed.
Further information on fuel and on fuel grades
can be found in the "Fuel" section
(Y page 277). Refueling
Fuel filler flap When you open or close the vehicle with the
SmartKey, the fuel filler flap is automatically
unlocked or locked.
The fuel filler flap is located to the rear on the
right. The position of the fuel filler cap is
displayed in the instrument cluster
00B6. The
arrow next to the filling pump indicates the
side of the vehicle. 0043
To open the fuel filler flap
0044 Tire pressure table
0087 Fuel type
0085 To insert the fuel filler cap
Opening X
Switch off the engine.
i When the engine is running and the fuel
filler flap is open, the engine diagnostics
warning lamp 00B9may light up.
Further information can be found in the
"Warning and indicator lamps in the
instrument cluster" chapter ( Ypage 191).
X Open the driver's door. This switches the
ignition to position 0, which corresponds to
having removed the SmartKey. The driver’s
door can be closed again.
X Press the fuel filler flap in the direction of
arrow 0043.
The fuel filler flap opens slightly.
X Open the fuel filler flap. Refueling
125Driving and parking Z

X
Turn the fuel filler cap counter-clockwise
and remove it.
X Insert the fuel filler cap into the holder
bracket on the inside of filler flap 0085.
X Completely insert the fuel pump nozzle into
the filler neck and refuel.
X Only fill the tank until the pump nozzle
switches off.
! Overfilling the fuel tank could damage the
fuel system.
Closing X
Replace the fuel filler cap and turn it
clockwise. The fuel filler cap audibly
engages.
X Close the fuel filler flap. 126
RefuelingDriving and parking

Problems with fuel and the fuel tank
Problem Possible causes/consequences and
0050
0050Solutions Fuel is leaking from the
vehicle.
G
Risk of explosion or fire
The fuel line or the fuel tank is defective.
X Set the Start/Stop button to key position 0immediately.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The fuel filler flap
cannot be opened. The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X
Unlock the vehicle (Y page 67).
or
X Unlock the vehicle using the mechanical key (Y page 69).The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Consult a qualified specialist workshop. Parking
Important safety notes
G
WARNING
If flammable materials such as leaves, grass
or twigs are exposed to prolonged contact to
parts of the exhaust system that heat up, they
could ignite. There is a risk of fire.
Park the vehicle so that no flammable
materials come into contact with parts of the
vehicle which are hot. Take particular care not
to park on dry grassland or harvested grain
fields. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine. They could also operate the vehicle's
equipment. There is a risk of an accident and
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! If the engine speed is too high or if the
vehicle is rolling, do not shift the
transmission directly from Dto R, from R
to Dor directly to P.
Do not open the driver's door while the
vehicle is in motion. At low speeds in
transmission position Dor R, park position
P is otherwise engaged automatically.
The transmission could be damaged.
! Always secure the vehicle correctly
against rolling away. Otherwise, the vehicle
or its drivetrain could be damaged. Parking
127Driving and parking Z

X
While driving, push handle 0043of the electric
parking brake (Y page 129).
i The vehicle is braked as long as you keep
the handle of the electric parking brake
pressed. The longer the electric parking
brake handle is depressed, the greater the
braking force.
During braking:
R a warning tone sounds.
R the Release Parking Brake
Release Parking Brake message
appears
R the red 0049(USA only) or 0024(Canada
only) indicator lamp in the instrument
cluster appears.
When the vehicle has been braked to a
standstill, the electric parking brake is
engaged. Parking the vehicle for a long period
If you leave the vehicle parked for longer than
four weeks, the battery may be damaged by
exhaustive discharging.
If you leave the vehicle parked up for longer
than six weeks, the vehicle may suffer
damage as a result of lack of use.
X Visit a qualified specialist workshop and
seek advice.
i You can obtain information about trickle
chargers from a qualified specialist
workshop. Driving tips
General driving tips
Important safety notes G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. G
WARNING
Please do not forget that your primary
responsibility is to drive the vehicle. A driver's
attention to the road must always be his/her
primary focus when driving. For your safety
and the safety of others, we recommend that
you pull over to a safe location and stop
before placing or taking a telephone call.
If you choose to use the telephone 5
while
driving, please use the hands-free device and
only use the telephone when road, weather
and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
mobile telephone while driving a vehicle.
Only operate the COMAND 5
(Cockpit
Management and Data System) if road,
weather and traffic conditions permit.
Otherwise, you may not be able to observe
traffic conditions and could endanger yourself
and others.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
Drive sensibly – save fuel Observe the following tips to save fuel:
X
The tires should always be inflated to the
recommended tire pressure.
X Remove unnecessary loads.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenance work carried out
according to the service intervals listed in
the Maintenance Booklet or the service
interval display.
5 Observe all legal requirements. 130
Driving tipsDriving and parking