fuel MERCEDES-BENZ CLS 2016 User Guide

The following text is published as required of
manufacturers under Title 49, Code of U.S. Fed-
eral Regulations, Part 575 pursuant to the
"National Traffic and Motor Vehicle Safety Act of
1966".
If you believe that your vehicle has a defect
which could cause a crash or could cause injury
or death, you should immediately inform the
National Highway Traffic Safety Administration
(NHTSA) in addition to notifying Mercedes-Benz
USA, LLC.
If NHTSA receives similar complaints, it may
open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order
a recall and remedy campaign. However, NHTSA
cannot become involved in individual problems
between you, your dealer, or Mercedes-Benz
USA, LLC.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at
1-888-327-4236(TTY: 1-800-424-9153 ); go to
http://www.safercar.gov ; or write to: Admin-
istrator, NHTSA, 400 Seventh Street, SW.,
Washington, DC 20590.
You can also obtain other information about
motor vehicle safety from
http://www.safercar.gov
Limited Warranty
! Follow the instructions in this manual about
the proper operation of your vehicle as well as
about possible vehicle damage. Damage to
your vehicle that arises from culpable contra-
ventions against these instructions is not cov-
ered either by the Mercedes-Benz Limited
Warranty or by the New or Used-Vehicle War-
ranty.
QR codes for the rescue card
The QR codes are secured in the fuel filler flap
and on the opposite side on the B-pillar. In the
event of an accident, rescue services can use
the QR code to quickly find the appropriate res-
cue card for your vehicle. The current rescue
card contains the most important information
about your vehicle in a compact form, e.g. the
routing of the electric cables.
You can find more information under http://
portal.aftersales.i.daimler.com/public/ content/asportal/en/communication/
informationen_fuer/QRCode.html.
Data stored in the vehicle
Data storage A wide range of electronic components in your
vehicle contain data memories.
These data memories temporarily or perma-
nently store technical information about: R
vehicle's operating state R
incidents R
malfunctions
In general, this technical information docu-
ments the state of a component, a module, a
system or the surroundings.
These include, for example: R
operating conditions of system components,
e.g. fluid levels R
the vehicle's status messages and those of its
individual components, e.g. number of wheel
revolutions/speed, deceleration in move-
ment, lateral acceleration, accelerator pedal
position R
malfunctions and defects in important system
components, e.g. lights, brakes R
vehicle reactions and operating conditions in
special driving situations, e.g. air bag deploy-
ment, intervention of stability control sys-
tems R
ambient conditions, e.g. outside temperature
This data is of an exclusively technical nature
and can be used to: R
assist in recognizing and rectifying malfunc-
tions and defects R
analyze vehicle functions, e.g. after an acci-
dent R
optimize vehicle function
The data cannot be used to trace the vehicle's
movements.
When your vehicle is serviced, technical infor-
mation can be read from the event data memory
and malfunction data memory.
Services include, for example: R
repair services R
service processes R
warranties R
quality assurance30
Data stored in the vehicle
Introduction

If the hazardous situation passes without result-
ing in an accident, the original settings are
restored.
Automatic measures after an acci-
dent Immediately after an accident, the following
measures are implemented, depending on the
type and severity of the impact: R
the hazard warning lamps are activated R
the emergency lighting is activated R
the vehicle doors are unlocked R
the front side windows are lowered R
vehicles with a memory function: the electri-
cally adjustable steering wheel is raised R
the engine is switched off and the fuel supply
is cut off R
vehicles with mbrace: automatic emergency
call
Children in the vehicle
Important safety notes Accident statistics show that children secured
in the rear seats are safer than children secured
in the front-passenger seat. For this reason,
Mercedes-Benz strongly advises that you install
a child restraint system on a rear seat. Children
are generally better protected there.
If a child younger than twelve years old and
under 5 ft (1.50 m) in height is traveling in the
vehicle: R
always secure the child in a child restraint
system suitable for Mercedes-Benz vehicles.
The child restraint system must be appropri-
ate to the age, weight and size of the child R
be sure to observe the instructions and safety
notes in this section in addition to the child
restraint system manufacturer's installation
instructions R
be sure to observe the instructions and safety
notes on the "Occupant classification system
(OCS)" ( Y
page 49) G WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example: R
release the parking brake. R
shift the automatic transmission out of the
parking position P .R
start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. 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.
G WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
G WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight. Pro-
tect it with a blanket, for example. If the child
restraint system has been exposed to direct
sunlight, let it cool down before securing the
child in it. Never leave children unattended in
the vehicle.
Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sitting
properly. Particular attention must be paid to
children.
Observe the safety notes on the seat belt
( Y
page 43) and the notes on correct use of seat
belts ( Y
page 44).
A booster seat may be necessary to achieve
proper seat belt positioning for children over
41 lbs (18 kg) until they reach a height where a58
Children in the vehicle
Safety

tions of KEYLESS-GO with those of a conven-
tional SmartKey. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using the
7 button on the SmartKey.
When locking or unlocking with KEYLESS-GO,
the distance between the SmartKey and the cor-
responding door handle must not be greater
than 3 ft (1 m).
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example: R
when the external door handles are touched R
when starting the engine R
while the vehicle is in motion
X
To unlock the vehicle: touch the inner sur-
face of the door handle. X
To lock the vehicle: touch sensor sur-
face C .X
Convenience closing feature: touch
recessed sensor surface D for an extended
period.
Further information on the convenience clos-
ing feature ( Y
page 88).
X
To unlock the trunk lid: pull the handle on
the trunk lid.
The vehicle only unlocks the trunk lid. Deactivating and activating If you do not intend to use a SmartKey for an
extended period of time, you can deactivate the
KEYLESS-GO function of the SmartKey. The
SmartKey will then use very little power, thereby
conserving battery power. For the purposes of
activation/deactivation, the vehicle must not be
nearby. X
To deactivate: press the 7 button on the
SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
( Y
page 79) flashes twice briefly and lights
up once, then KEYLESS-GO is deactivated. X
To activate: press any button on the Smart-
Key.
or X
Insert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated features
are available again.
Changing the settings of the locking
system You can change the settings of the locking sys-
tem. This means that only the driver's door and
the fuel filler flap are unlocked when the vehicle
is unlocked. This is useful if you frequently travel
alone. X
To change the setting: simultaneously press
the 6 and 7 buttons on the SmartKey
for approximately six seconds until the bat-
tery check lamp flashes twice ( Y
page 79).
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the 7 or 6 button: R
locks or R
unlocks the vehicle
The SmartKey now functions as follows: X
To unlock: press the 6 button once.X
To unlock centrally: press the 6 button
twice. X
To lock centrally: press the 7 button.SmartKey 77
Opening and closing Z

The KEYLESS-GO function is changed as fol-
lows: X
To unlock the driver's door: touch the inner
surface of the door handle on the driver's
door. X
To unlock centrally: touch the inner surface
of the door handle on the front-passenger
door or the rear door. X
To lock centrally: touch the outer sensor
surface on one of the door handles. X
To restore the factory settings: press and
hold down the 6 and 7 buttons simul-
taneously for approximately six seconds until
the battery check lamp flashes twice
( Y
page 79).
Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey, use the mechani-
cal key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the anti-
theft alarm system will be triggered. Switch off
the alarm ( Y
page 75).
If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked auto-
matically. X
To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key
X
Push release catch C in the direction of the
arrow and at the same time remove mechan-
ical key D from the SmartKey. For further information about: R
unlocking the driver's door ( Y
page 83)R
unlocking the trunk ( Y
page 86)R
locking the vehicle ( Y
page 83)
Inserting the mechanical key X
Push mechanical key D completely into the
SmartKey until it engages and release
catch C is back in its basic position.
SmartKey battery
Important safety notes
G WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal
injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
H Environmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm .78
SmartKey
Opening and closing

X
To unlock a front door: pull door handle D .
Locking knob C pops up.
The door is unlocked and can be opened. X
To open a front door: pull door handle D .X
To unlock a rear door: pull up locking
knob C .
The door is unlocked and can be opened. X
To open a rear door: pull door handle D .
Centrally locking and unlocking the
vehicle from the inside You can centrally lock or unlock the vehicle from
the inside. The switches are on the driver’s door.
X
To unlock: press button C .X
To lock: press button D .
If all the doors are closed, the vehicle locks.
Meanwhile, the fuel filler flap will not be locked
or unlocked.
If the vehicle has been locked from the outside,
it cannot be centrally unlocked from the inside.
You can open a door from inside the vehicle
even if it has been locked. You can only open the rear doors from inside the
vehicle if they are not secured by the child-proof
locks ( Y
page 63).
If a locked door is opened from the inside, the
previous unlock status of the vehicle will be
taken into consideration if: R
the vehicle was locked using the locking but-
ton for the central locking, or R
if the vehicle was locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. If only the driver's
door had been previously unlocked, only the
door which has been opened from the inside is
unlocked.
Automatic locking feature
X
To deactivate: press and hold button C for
about five seconds until a tone sounds. X
To activate: press and hold button D for
about five seconds until a tone sounds.
If you press one of the two buttons and do not
hear a tone, the relevant setting has already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing.
You could therefore lock yourself out if: R
the vehicle is being pushed. R
the vehicle is being towed. R
the vehicle is on a roller dynamometer.
You can also switch the automatic locking func-
tion on and off using the on-board computer
( Y
page 207).82
Doors
Opening and closing

It is only possible to shift the transmission from
position P to the desired position if you depress
the brake pedal. If the brake pedal is not
depressed, the DIRECT SELECT lever can still be
moved but the parking lock remains engaged.
i Upshifts take place at higher engine speeds
after a cold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Hill start assist Hill start assist helps you when pulling away for-
wards or in reverse on an uphill gradient. It holds
the vehicle for a short time after you have
removed your foot from the brake pedal. This
gives you enough time to move your foot from
the brake pedal to the accelerator pedal and to
depress it before the vehicle begins to roll.
G WARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if: R
you are pulling away on a level road or on a
downhill gradient. R
the transmission is in position N .R
the parking brake is applied. R
ESP ®
is malfunctioning.
ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
The engine starts automatically when the driver
wants to pull away again. The ECO start/stop
function thereby helps you to reduce the fuel
consumption and emissions of your vehicle. Important safety notes
G WARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes
C
ECO start/stop display
The ECO start/stop function is activated when-
ever you start the engine using the Smartkey or
the Start/Stop button.
If the engine has been switched off automati-
cally by the ECO start/stop function, the

Problems with the engine Problem
Possible causes/consequences and P Solutions
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.
Before attempting to start the engine again: X
Turn the Smartkey back to position 0 in the ignition lock.
or X
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 128). 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.
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 294).
If the engine does not start despite attempts to jump-start it: X
Consult a qualified specialist workshop.
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.
The engine is not running
smoothly and is misfir-
ing. 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.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it. X
Have the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gauge shows a value
above 248 ‡ (120 †). The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently. X
Stop as soon as possible and allow the engine and the coolant to
cool down. X
Check the coolant level ( Y
page 276). Observe the warning notes
as you do so and add coolant if necessary. Driving 133
Driving and parking Z

Mercedes-AMG vehicles
Drive program selector with manual drive program X
Turn drive program selector C until the
desired drive program appears in the multi-
function display in the speedometer.
The drive program indicator on drive program
selector C lights up in red.
i Further information about permanent drive
program M ( Y
page 141).
As well as this permanent drive program M ,
you can also activate temporary drive pro-
gram M ( Y
page 140).
C Controlled
Efficiency Comfortable, economical
driving
S Sport Sporty driving style
S+ SportPlus Particularly sporty driving
style
M Manual Manual gear shifting
RS RACE
START Optimal vehicle accelera-
tion from a standstill
i For further information on the automatic
drive program, see ( Y
page 139).
i The automatic transmission shifts to auto-
matic drive program C each time the engine is
started.
i RS cannot be selected during normal driv-
ing. For further information on RACE START,
see ( Y
page 165). Steering wheel paddle shifters
In the manual drive program, you can change
gears manually using steering wheel paddle
shifters C and D .
Further information about permanent drive pro-
gram M ( Y
page 141).
Further information about temporary drive pro-
gram M ( Y
page 140).
i You can only change gear with the steering
wheel paddle shifters when the transmission
is in position D .
Automatic drive program
Automatic drive program E Drive program E (drive program C on Mercedes-
AMG vehicles) is characterized by the following: R
comfort-oriented engine and automatic trans-
mission settings. R
optimal fuel consumption resulting from the
automatic transmission shifting up sooner. R
the vehicle pulling away more gently in
forward and reverse gears, unless the accel-
erator pedal is depressed fully. R
the vehicle having improved driving stability,
for example on slippery road surfaces. R
the automatic transmission shifting up
sooner. This results in the vehicle being driven
at lower engine speeds and the wheels being
less likely to spin.Automatic transmission 139
Driving and parking Z

Aut oma tic drive program SDrive program S (or , in th e cas e of Mercedes-
AM G vehicles, drive program s S and S+ ) is char-
acterize d by th e following:R
sport y engin e and automatic transmission
settings. R
th e automatic transmission shifting up later.
th e fuel consumption possibl y bein g higher as
a result of th e later automatic transmission
shif t points .
Manual drive program M Genera l notesIn this drive program , you can briefl y chang e
gear yourself by usin g th e steering whee l paddl e
shifters. The transmission mus t be in position D .
You can activat e manual drive program M in th e
E and S automatic drive programs.
i As well as temporar y drive program M , you
can also activat e permanen t drive program M
( Y
page 138).
Further information about permanen t drive
program M ( Y
page 141).
Acti va tingX
Shift th e transmission to position D .X
Pull th e lef t or right steering whee l paddl e
shifte r ( Y
page 139).
Manual drive program M is temporarily acti-
vated. The selected gear and M appear in th e
multifunction display.
Shi ft ing gear s
If you pull on th e lef t or right steering whee l
paddl e shifter, th e automatic transmission
switches to manual drive program M for a limi -
te d amount of time. Dependin g on whic h paddl e
shifte r is pulled , th e automatic transmission
immediately shifts int o th e next gear down or
up, if permitted. X
To shift up : pull th e right-hand steering whee l
paddl e shifte r ( Y
page 139).
The automatic transmission shifts up to th e
next gear .
i If th e maximum engin e spee d on th e cur -
rentl y engage d gear is reached and you con-
tinue to accelerate , th e automatic tra nsmis - s
ion automatically shifts up in order to pre -
ven t engin e damage. X
To shift down : pull on th e left-han d steering
whee l paddl e shifte r ( Y
page 139).
The automatic transmission shifts down to
th e next gear .
i If th e engin e exceeds th e maximum engin e
spee d when shifting down , th e automatic
transmission protect s against engin e damag e
by no t shifting down .
i Automatic down shifting occur s when
coasting .
Shi ft recommendation
The gearshif t recommendation s assist you in
adopting an economical drivin g style. The rec -
ommended gear is shown in th e multifunction
display. X
Shift to recommended gear D according to
gearshif t recommendation C when shown in
th e multifunction display of th e instrumen t
cluster.
Deactivating If you hav e activated manual drive program M , it
will remain active for a certain amount of time.
Under certain condition s th e minimum amount
of time is extended, e.g. in th e cas e of lateral
acceleration , during an overrun phas e or when
drivin g on steep terrain .
If manual drive program M has been deactiva-
ted, th e automatic transmission shifts int o th e
automatic drive program that was last selected,
i.e . E or S .
You can also deactivat e manual drive program
M yourself : X
Pull on th e right-hand steering whee l paddl e
shifte r and hold it in plac e ( Y
page 139).
or X
Use th e DIRECT SELECT lever to switch th e
transmission position ( Y
page 135).140
Automatic transmission
Driving an d parking

or X
Use the program selector button to change
the drive program ( Y
page 138).
Manual drive program M is deactivated. The
automatic transmission switches into the
automatic drive program that was last selec-
ted, i.e. E or S .
Manual drive program (Mercedes-
AMG vehicles and vehicles with the
AMG sports package)
General information In this drive program, you can permanently
change gear yourself by using the steering
wheel paddle shifters. The transmission must be
in position D .
i As well as this permanent drive program M ,
you can also activate temporary drive pro-
gram M ( Y
page 140).
Switching on the manual drive program X
Press the program selector button
( Y
page 138) repeatedly until M appears in
the multifunction display. X
Mercedes-AMG vehicles: turn the drive pro-
gram selector ( Y
page 139) until M appears in
the multifunction display.
The indicator M on the drive program selector
lights up in red.
Manual drive program M is different from drive
programs S and S+ with regard to spontaneity,
responsiveness and smoothness of gear
changes.
Manual drive program M can be selected using
the drive program selector. In manual drive pro-
gram M , you can change gear using the steering
wheel paddle shifters if the transmission is in
position D . The gear currently selected and
engaged is shown in the multifunction display.
Upshifting X
Pull the right-hand steering wheel paddle
shifter.
The automatic transmission shifts up to the
next gear. Mercedes-AMG vehicles
! In manual drive program M , the automatic
transmission does not shift up automatically
even when the engine limiting speed for the
current gear is reached. When the engine lim-
iting 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. There is
otherwise a risk of engine damage.
C
Gear indicator D
Upshift indicator
Before the engine speed reaches the red area,
an upshift indicator will be shown in the multi-
function display. X
When the UP message appears in the multi-
function display, pull on the right-hand steer-
ing wheel paddle shifter.
Shift recommendation
The gearshift recommendations assist you in
adopting an economical driving style. The rec-
ommended gear is shown in the multifunction
display. X
If corresponding gearshift recommenda-
tion C appears in the multifunction display
on the instrument cluster, pull on the right-
hand steering wheel paddle shifter
( Y
page 139).
The automatic transmission shifts to recom-
mended gear D .Automatic transmission 141
Driving and parking Z