2014 MERCEDES-BENZ CLS-Class Owner's Manual

Problems with fuel and the fuel tank
Problem Possible causes/consequences and
000B Solutions
Fuel is leaking from the
vehicle. The fuel line or the fuel tank is faulty.
G WARNING
Risk of explosion or fire.
X Turn the SmartKey to position 0in the ignition lock and remove
it immediately (Y page 147).
X Do not restart the engine under any circumstances.
X Consult aqualified 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 using the mechanical key (Y page 78).
X Open the trunk lid or the tailgate.
X open the trunk lid.
X Manuallyu nlock the fuel filler flap using the emergency release
(Y page 166). The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Consult aqualified 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 arisk 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 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.Y
ou will require considerably
more effort to steer and brake. There is arisk
of an accident.
Do not switch off the ignition while driving. 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 arisk of an accident and
injury. Parking
167Driving and parking
Z

When leaving the vehicle, alway
stake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! Always secure the vehicle correctly
against rolling away .Otherwise, the vehicle
or its drivetrai ncould be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally:
R the parking brake must be applied.
R the transmission must be in position Pand
the SmartKey must be removed from the
ignition lock.
R on uphill or downhill gradients, the front
wheels must be turned towards the curb. Switching off the engine
Important safety notes G
WARNING
The automatic transmission switches to
neutral position Nwhen you switch off the
engine. The vehicle may roll away.T here is a
risk of an accident.
After switching off the engine, always switch
to parking position P.Prevent the parked
vehicle from rolling away by applying the
parking brake.
Vehicles with automatic transmission X
Apply the parking brake firmly.
X All vehicles( except AMG vehicles): shift
the transmission to position P. Selector lever in AMG vehicles with
Pbutton
X AMG vehicles: pressPbutton 001A.
Using the SmartKey
X Turn the SmartKey to position 0in the
ignition lock and remove it.
The immobilizer is activated.
i If you turn off the engine with the
SmartKey and then remove it from the
ignition lock or open afront door, the
automatic transmission shifts to P
automatically.
Using KEYLESS-GO
X Press the Start/Stop button (Y page 147).
The engine stops and all the indicator
lamps in the instrumentc luster go out.
i When the driver's door is closed, this
corresponds to key position 1.When the
driver's door is open ,this corresponds to
key position 0:"key removed".
i If yo uturno ff the engine with the Start/
Stop button, the automatic transmission
shifts to N.Ifyou then open one of the front
doors, the automatic transmission shifts to
P.
i The engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for about three
seconds. This function operates
independently of the ECO start/stop
automatic engine switch-off function. 168
ParkingDriving and parking

Parking brake
G
WARNING
If you must brake the vehicle with the parking
brake, the braking distance is considerably
longer and the wheels could lock. There is an
increased danger of skidding and accidents.
Only use the parking brake to brake the
vehicle when the service brake is faulty. Do
not apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turninga gain.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 startingt he engine.
They could also operate the vehicle's
equipment. There is arisk 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 you brake the vehicle with the parking
brake, the brake lamps will not light up. X
To apply: depress parking brake 0010firmly.
When the engine is running, the 0004(USA
only) or 0001(Canada only) indicator lamp
lights up in the instrumen tcluster.
X To release: depressthe brak epedal and
keep it depressed.
X Pull release handle 001A.
When the ignition is switched on or the
engine is running, the 0004(USA only) or
0001 (Canada only) indicator lamp goes out
in the instrumen tcluster. Parking th
evehicle for along period
If you leave th evehicle parked for longer than
four weeks, th ebattery may be damage dby
exhaustive discharging.
If you leave th evehicle parked for longer than
six weeks, th evehicle may suffer damage as
ar esult of lack of use.
X Visit aqualifie dspecialist workshop and
seek advice.
i You can obtain informatio nabout trickle
chargers from aqualifie dspecialist
workshop. Driving tips
General notes
Important safety notes G
WARNING
If you switch off th eignitio nwhile 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.Y ou will require considerably
more effort to steer and brake. There is arisk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If you operate mobile communication
equipment while driving, you will be Driving tips
169Driving and parking
Z

distracted from traffic conditions. You could
also lose control of the vehicle. There is arisk
of an accident.
Only operate this equipment when the vehicle
is stationary.
Observe the legal requirements for the
country in which you are driving .Some
jurisdiction sprohibit the driver from using a
mobile phone while driving avehicle.
If you make acall while driving ,alwaysu se
hands-free mode. Only operate the telephone
when the traffic situation permits. If you are
unsure, pull over to asafe location and stop
before operatin gthe telephone.
Bear in mind that at aspeed of only 30 mph
(approximately 50 km/h) the vehicle covers
ad istanc eof44ft( approximately 14 m) per
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 Remove roof racks whe nthey are not
needed.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenancew ork carried out as
indicated by the service intervals in the
MaintenanceB ooklet or by the service
interval display.
Fuel consumption also increases when
driving in cold weather, in stop-start traffic
and in hilly terrain.
Drinking and driving G
WARNING
Drinking and driving and/or taking drugs and
driving are very dangerous combinations.
Even asmall amount of alcohol or drugs can
affect your reflexes, perceptions and
judgment. The possibility of
aserious or even fatal
accident are greatly increased when you drink
or take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or
taking drugs.
Emission control G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is ar isk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation.
Certain engine systems are designed to keep
the level of poisonous components in exhaust
fumes within legal limits.
These systems only work at peak efficiency if
they are serviced exactly in accordance with
the manufacturer's specifications. For this
reason, only have work on the engine carried
out by qualified and authorized Mercedes-
Benz technicians.
The engine settings must not be changed
under any circumstances. Furthermore, all
specific service work must be carried out at
regular intervals and in accordance with the
Mercedes-Ben zservice requirements. Details
can be found in the Maintenance Booklet. ECO display
Example: ECO display
The ECO display gives you information on how
economical your driving style is. The ECO
display assists you in achieving the optimum170
Driving tipsDriving and parking

drivin
gstyle in term sofconsumption ,taking
the actual and selected condition sinto
consideration .Your driving style can
significantly influence the vehicle's
consumption.
The ECO display consist softhree bars:
R Acceleration R
Constant R
Coasting The percent value is the average value of the
three bars. The three bars and the mean value
begin at the value of 50%. Ahigher
percentage indicates amoree conomical
driving style.
The ECO display doe snot indicate the actual
fue lconsumption and afixe dp ercentage
count in the ECO display doe snot indicate a
fixe dconsumption figure.
Apart from driving style, consumption is
dependent on many factors such as ,e.g.:
R load
R check
R col ds tart
R choice of route
R electrical consumers switched on
These factors are not taken into
consideration by the ECO display.
The evaluation of your driving styl eiscarried
ou tu sing the following three categories: R
Acceleration (evaluation of all
acceleration processes):
- The bar fills up: moderate acceleration,
especially at higher speeds
- The bar empties: sporty acceleration
R Constant (assessment of driving behavior
at all times):
- The bar fills up: constant speed and
avoidance of unnecessary acceleration
and deceleration
- The bar empties: fluctuations in speed
R Coasting (assessment of all deceleration
processes):
- The bar fills up: anticipatory driving,
keeping your distance and early release
of the accelerator. The vehicle can coast
without use of the brakes.
- The bar empties: frequent braking
i An economical driving style specially
requires driving at moderate engine
speeds.
To achieve ahigher value in the categories
Acceleration and
Constant :
R observe the gearshift recommendations.
R drive in drive program E.
i On long journeys at aconstant speed, e.g.
on the highway, only the bar for Constant will change.
i The ECO displays ummaries the driving
characteristics from the start of the journey
to its completion. For this reason, the bars
change dynamically at the beginning of the
journey. On longer journeys, there are
fewer changes. For more dynamic changes,
carry out amanual reset.
Further information on the ECO display
(Y page 223). Driving tips
171Driving and parking Z

Braking
Important safety notes G
WARNING
If yo ushift down on aslipper yroads urface in
an attempt to increas ethe engine's braking
effect,t he drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on aslippery road surface.
Downhill gradients !
On long and steep gradients, you must
reduce the load on the brakes by shifting
early to alower gear. This allowsy ou to take
advantage of the engine braking effect and
helps avoid overheating and excessive
wear of the brakes.
When you take advantage of the engine
braking effect,ad rive wheel may not turn
for some time, e.g. on aslippery road
surface. This could cause damage to the
drive train. This type of damage is not
covered by the Mercedes-Ben zwarranty.
Do no tdepress the brake pedal continuously
while the vehicle is in motion ,e.g. causing the
brakes to rub by constantly applying light
pressure to the pedal. This results in
excessive and premature wear to the brake
pads.
On long and steep downhill gradients, you
must select shift range 1,2or 3in good time.
This is especially important if the vehicle is
laden.
Heavy and light loads G
WARNING
If you rest your foot on the brake pedal while
driving, the brakin gsystem can overheat .This
increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident. Never use the brake pedal as
afootrest .Never
depress the brake pedal and the accelerator
pedal at the same time.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to aheavy
load, do not stop the vehicle immediately, but
drive on for ashort while. This allows the
airflow to cool the brakes more quickly.
Wet roads If you have driven for
along time in heavy rain
without braking ,there may be adelayed
reaction from the brakes when braking for the
first time. This may also occur after the
vehicle has been washed or driven through
deep water.
You have to depress the brake pedal more
firmly. Maintain agreater distanc efrom the
vehicle in front.
After driving on awet road or having the
vehicle washed, brake firmly while paying
attention to the traffic conditions. This will
warm up the brake discs, thereby drying them
more quickly and protecting them against
corrosion.
Limited braking performance on salt-
treated roads If you drive on salted roads,
alayer of salt
residue may form on the brake discs and
brake pads. This can result in asignificantly
longer braking distance.
R Brak eoccasionally to remove any possible
salt residue. Make sure that you do not
endanger other road users when doing so.
R Carefully depress the brake pedal and the
beginnin gand end of ajourney.
R Maintain agreater distanc etothe vehicle
ahead. 172
Driving tipsDriving and parking

Servicing the brakes
!
If the red brake warning lamp lights up in
the instrumen tcluster and you hear a
warnin gtonew hile the engine is running,
the brak efluid level may be too low.
Observe additional warnin gmessages in
the multifunction display.
The brak efluid level may be too low due to
brak epad wear or leakin gbrak elines.
Have the brak esystem checked
immediately. This work should be carried
out at aqualified specialist workshop.
! Vehicles with 4MATIC: function or
performanc etests may only be carried out
on a2 -axle dynamometer. If you are
planning to have the vehicle tested on such
ad ynamometer, contac tanauthorized
Mercedes-Ben zCenter to obtain further
information first. Otherwise, you could
damage the drive train or the brak esystem.
! Vehicles with 4MATIC: as the ESP®
system operates automatically, the engine
and the ignition must be switched off
(SmartKey in position 0or 1in the ignition
lock or Start/Stop button in position 0or
1)w hile the parking brak eisbeing tested
on abrak edynamometer.
Brakin gmaneuvers triggere dautomatically
by ESP ®
may seriousl ydamag ethe brake
system.
! Vehicles with 4MATIC: as theESP®
system operate sautomatically, th eengine
and th eignition system must be switched
off (SmartKey in position 0or 1in the
ignition loc korStart/Sto pbutto nin
position 0or 1)w hen:
R testing th eparking brak eonabrake
dynamometer.
R you inten dtohave th evehicl etow ed with
on eoft heaxle sraised.
Braking maneuvers triggered automatically
by ESP ®
may seriousl ydamag ethe brake
system. All check
sand maintenance work on the
brak esystem must be carried out at a
qualified specialist workshop. Consult a
qualified specialist worksho ptoarrangethis.
Hav ebrak epads installed and brak efluid
replace dataq ualified specialist workshop.
If th ebrak esystem has only been subject to
moderat eloads ,you should test the
functionalit yofyour brakes at regular
intervals. To do so, press firmly on th ebrake
pedal when driving at ahigh speed. This
improve sthe gripoft hebrak epads.
You can fin dadescription of Brake Assist
(BAS) on (Y page 67)orofBASPLU Son
( Ypage 67).
The braking characteristics of th evehicl ecan
be seriousl yimpaired if:
R brak epads other than those recommended
are installed
R ther ecommended brak efluid is no tused
Safe braking can no longer be guaranteed.
AMG high-performance and ceramic
brakes The high-performance brake system is
installed only on the CLS 63 AMG.
The AMG brake systems are designed for
heavy loads. This may lead to noise when
braking. This will depend on:
R
Speed
R Braking force
R Environmental conditions, such as
temperature and humidity
The wear of individualc omponentsofthe
brake system, such as the brake pads/linings
or brake discs, depends on the individual
driving style and operating conditions.
For this reason, it is impossibletos tate a
mileage that will be valid under all
circumstances. An aggressive driving style
will lead to high wear. You can obtain further
information aboutt his from your authorized
Mercedes-Ben zCenter. Driving tips
173Driving and parking Z

New and replaced brake pads and discs only
reach their optimum braking effect after
several hundred kilometers of driving.
Compensate for this by applying greater force
to the brake pedal. Keep this in mind, and
adapt yourd riving and braking accordingly
during this break-in period.
Excessive heavy braking results in
correspondingly high brake wear. Observe
the 0002 brake wearw arning lamp in the
instrumen tcluster and not eany brak estatus
messages in the multifunction display.
Especially for high performanc edriving, it is
importan ttomaintain and have the brake
system checked regularly. Driving on wet roads
Hydroplaning If water has accumulated to
acertain depth
on the road surface, there is adanger of
hydroplaning occurring, even if:
R you drive at low speeds.
R the tires have adequate tread depth.
For this reason ,inthe even tofheavy rain or
in conditions in which hydroplaning may
occur, you must drive in the following
manner:
R lower your speed.
R avoid ruts.
R brak ecarefully.
Driving on flooded roads !
Do not drive through floode dareas.
Check the dept hofany water befor edriving
through it. Drive slowly through standing
water .Otherwise, water ma yente rthe
vehicle interior or the engine compartment.
This can damage the electronic
components in the engine or the automatic
transmission. Water can also be drawn in
by the engine's air suction nozzles and this
can cause engine damage. Winter driving
Important safety notes G
WARNING
If you shift down on aslippery road surface in
an attempt to increase the engine's braking
effect,t he drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on aslippery road surface. G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is arisk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open
aw indow on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at aqualified
specialist workshop at the onset of winter.
Observe the notes in the "Winter operation"
section (Y page 336).
Driving with summer tires Observe the notes in the "Winter operation"
section (Y
page 336).
Slippery road surfaces G
WARNING
If you shift down on aslippery road surface in
an attempt to increase the engine's braking
effect,t he drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on aslippery road surface. 174
Driving tipsDriving and parking