2014 MERCEDES-BENZ CLS brake light

Asaresult, BAS PLUS may not intervene in all
critical situations. There isarisk of an
accident.
Always pay careful attention to the traffic
situation and be ready to brake.
In particular, the detection of obstacles can
be impaired if there is:
Rdirt on the sensorsoranythingelse
covering the sensors
Rsnow or heavy rain
Rinterference by other radar sources
Rthere are strong radar reflections, for
example in parking garages
Ranarrow vehicle travelinginfront, e.g. a
motorbike
Ravehicle travelinginfrontonadifferent line
relative to the center of your vehicle
Following damage to the frontend of the
vehicle, have the configurationand operation
of the radarsensorschecked ataqualified
specialist workshop. This also applies to
collisions at low speeds where thereisno
visible damage to the frontofthe vehicle.
Braking assistance
To preventacollision with the vehicle in front,
BAS PLUS calculates the brake force
necessary if:
Ryou approach an obstacle, and
RBAS PLUS has detectedarisk of collision
When driving ataspeed under 20 mph
(30 km/h):ifyou depress the brake pedal,
BAS PLUS is activated. The increase in brake
pressure will be carried out at the last
possible moment.
When driving ataspeed greater than
20 mph (30 km/h):ifyou depress the brake
pedal sharply, BAS PLUS automatically raises
the brake pressure toavalue adapted to the
traffic situation.
If BAS PLUS demands particularly high
braking force, preventative passenger
protection measures (PRE-SAFE®)are
activated simultaneously.
XKeep the brake pedal depressed until the
emergencybraking situation is over.
ABS preventsthe wheels from locking.
BAS PLUS is deactivated and the brakes
function as usual if:
Ryou release the brake pedal
Rthere is no longerarisk of collision
Rno obstacle is detected in front of your
vehicle
ESP®(Electronic Stability Program)
Important safety notes
iObserve the "Important safety notes"
section (Ypage 66).
GWARNING
If ESP®is malfunctioning, ESP®is unable to
stabilize the vehicle. Additionally, further
driving safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP®checked at a
qualified specialist workshop.
!Vehicles with 4MATIC: switch off the
ignition when the parking brake is being
tested onabrake dynamometer.
Application of the brakes by ESP®may
otherwise destroy the brake system.
Vehicles without 4MATIC: observe the notes
on ESP®(Ypage 330) when towing the
vehicle witharaised rear axle.
ESP®is deactivated if the warning lamp
in the instrument cluster lights up
continuously when the engine is running.
If thewarning lamp and the
warning lamp are lit continuously, ESP®is not
available due toamalfunction.
Observe the information on warning lamps
(Ypage 269) and display messages which
may be shown in the instrument cluster
(Ypage 238).
68Driving safety systems
Safety

If ESP®detects that the vehicle is deviating
from the direction desiredbythe driver, one
or more wheels are braked to stabilize the
vehicle.The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP®assists the driver when
pulling away on wet or slippery roads. ESP®
can also stabilize the vehicle during braking.
If ESP®intervenes, theESP®warning
lamp flashes in the instrumentcluster.
If ESP®intervenes:
XDo not deactivateESP®under any
circumstances.
XOnly depressthe accelerator pedal as far
as necessary when pulling away.
XAdapt your drivingstyle to suit the
prevailing road and weatherconditions.
iOnly use wheels with the recommended
tire sizes. Only then will ESP®function
properly.
ETS/4ETS (Electronic Traction System)
ETS/4ETS traction control is part of ESP®.
Traction control brakes the drive wheels
individuallyifthey spin. This enables you to
pull away and accelerate on slippery surfaces,
for example if the road surface is slippery on
one side. In addition, more drive torque is
transferred to the wheel or wheels with
traction.
Traction control remains active, even if you
deactivate ESP®.
Deactivating/activating ESP®(except
AMG vehicles)
GWARNING
If you deactivate ESP®,ESP®no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate ESP®in the situations
described in the following.
!Avoid spinningthe driven wheels for an
extended period with ESP®deactivated.
You could otherwise damage the drivetrain.
XTo deactivate:(Ypage 227).
The ESP®OFF warning lamp in the
instrument cluster lights up.
XTo activate:(Ypage 227).
The ESP®OFF warning lamp in the
instrument cluster goes out.
ESP®is activated automatically when the
engine is started.
The ECO start/stop function switches the
engine off automatically when the vehicle
stops moving. The engine starts
automatically when the driver wants to pull
away again. ESP®remains in its previously
selected status. Example: if ESP®was
deactivated before the engine was switched
off, ESP®remains deactivated when the
engine is switched on again.
If ESP®is deactivated and one or more wheels
start to spin, theESP®warning lamp in
the instrument cluster flashes. In such
situations, ESP®will not stabilize the vehicle.
It may be best to deactivate ESP®in the
following situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
If you deactivate ESP®:
RESP®no longer improves driving stability.
Rtraction control is still activated.
RESP®still provides support when you
brake.
Rengine torque is not limited and the drive
wheels are able to spin. The spinning
wheels produceacutting effect for better
traction.
Driving safety systems69
Safety
Z

Deactivating/activating ESP®(AMG
vehicles)
Activating/deactivating SPORT handling
mode
GWARNING
WhenSPORT handling mode is activated,
there isagreater risk of skidding and
accidents.
Only activateSPORT handling mode in the
situations described in the following.
XTo activate:briefly press button.
TheSPORT handling mode warning
lamp in the instrument cluster lights up.
TheSPORT handling modemessage
appears in the multifunction display.
SPORT handling mode is designed for
driving on designated roads when the
vehicle's own oversteering and
understeering characteristics are desired.
DrivinginSPORT handling mode requires
an extremely qualified and experienced
driver who is able to cope with these critical
driving conditions.
XTo deactivate:briefly press button.
TheSPORT handling mode warning
lamp in the instrument cluster goes out.
ESP®is activated automatically when the
engine is started.
It may be best to activateSPORT handling
mode in the following situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
If SPORT handling mode is activated and one
or more wheels start to spin, theESP®
warning lamp in the instrument cluster
flashes. ESP®only stabilizes the vehicle to a
limited degree.
When SPORT handling mode is activated:
RESP®only improves driving stability to a
limited degree.
Rtraction control is still activated.
RESP®still provides support when you
brake.
Rengine torque is only restricted toalimited
degree, and the drive wheels are able to
spin. The spinningwheels produce a
cutting effect for better traction.
Vehicles with ECO start/stop function: the
ECO start/stop function switches the engine
off automatically when the vehicle comes to
astop. The engine startsautomatically when
the driver wants to pull away again. ESP®
remains in its previously selected status. For
example, if ESP®was deactivated before the
engine was switched off, ESP®remains
deactivated when the engine is switched on
again.
Deactivating/activating ESP®
GWARNING
If you deactivate ESP®,ESP®no longer
stabilizes the vehicle. There is an increased
risk of skidding and an accident.
Only deactivate ESP®in the situations
described in the following.
!Avoid spinningthe driven wheels for an
extended period with ESP®deactivated.
You could otherwise damage the drivetrain.
70Driving safety systems
Safety

XTo deactivate:press buttonuntilthe
ESP®OFF warning lamp lights up in
the instrument cluster.
TheOFFmessage appearsinthe
multifunctiondisplay.
Deactivate ESP®when drivingon
designated roads when the vehicle's own
oversteeringand understeering
characteristics are desired. Drivingwithout
ESP®requiresanextremely qualified and
experienced driverwho is able to cope with
these critical driving conditions.
XTo activate:briefly press button.
The ESP®OFF warning lamp in the
instrumentcluster goes out. TheON
message appears in the multifunction
display.
ESP®is activated automatically when the
engine is started.
If ESP®is deactivated and one or morewheels
start to spin,theESP®warninglamp in
the instrumentcluster does not flash. In such
situations, ESP®will not stabilize the vehicle.
It may be best to deactivateESP®in the
followingsituations:
Rwhen using snowchains
Rin deep snow
Ron sand or gravel
If you deactivateESP®:
RESP®no longer improves drivingstability.
Rtraction control is still activated.
RPRE-SAFE®is no longer available, nor is it
activated if you brakefirmly and ESP®
intervenes.
RPRE-SAFE®Brake is no longer available, it
is also not activated if you brakefirmly and
ESP®intervenes.
RESP®still provides support when you
brake.
Rengine torque is no longer limited and the
drive wheels are able to spin.The spinning
wheels produceacuttingeffect for better
traction.
Vehicles with ECO start/stop function: the
ECO start/stop function switches the engine
off automatically when the vehicle comes to
astop. The engine starts automatically when
the driver wants to pull away again. ESP®
remains in its previously selected status. For
example, if ESP®was deactivated before the
engine was switched off, ESP®remains
deactivated when the engine is switched on
again.
EBD (electronic brake force
distribution)
iObserve the "Important safety notes"
section (Ypage 66).
GWARNING
If EBD has malfunctioned, the rear wheels can
still lock, e.g. under full braking. This
increases the risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked ataqualified
specialist workshop.
Observe information regarding indicator and
warning lamps (Ypage 267) as well as
displaymessages (Ypage 240).
EBD monitors and controls the brake
pressure on the rear wheels to improve
driving stability while braking.
Driving safety systems71
Safety
Z

In order to maintain the appropriatedistance
to the vehicle in front and thus prevent a
collision, you must apply the brakes yourself.
Due to the nature of the system, particularly
complicated driving conditionsmay cause
unnecessarywarningsortheunnecessary
intervention of PRE-SAFE®Brake.
Followingdamagetothe front end of the
vehicle, have the configurationand operation
of the radarsensorschecked ataqualified
specialist workshop. This also applies to
collisions at low speeds where thereisno
visible damage to the frontofthe vehicle.
Function
XTo activate/deactivate:activate or
deactivate PRE-SAFE®Brake in the on-
board computer (Ypage 228).
If the PRE-SAFE®Brake is not activated, the

symbol appears in the multifunction
display.
If you approachavehicle in front very quickly,
this function warns you fromaspeed of
approximately4mph (7 km/h). An
intermittent warning tone sounds and the
distance warning signal lamp in the
instrumentcluster lightsup.
XBrake immediately to defuse the situation.
or
XTake evasiveaction provided it is safe to do
so.
Fromaspeed of approximately4mph
(7 km/h), if the driver and frontpassenger
have fastened their seat belts, PRE-SAFE®
Brakecan brake the vehicle automatically at
speeds up to approximately 124 mph
(200 km/h).
You can preventthe intervention of the PRE-
SAFE®Brakeatany time by:
Rdepressingthe accelerator pedal further.
Ractivating kickdown.
Rreleasing the brake pedal.
The brakingaction of PRE-SAFE®Brakeis
ended automatically if:
Ryou maneuver to avoid the obstacle.
Rthereisnolonger any danger ofarear-end
collision.
Rthereisnolonger an obstacle detected in
frontofyour vehicle.
If you approach an obstacle and PRE-SAFE®
Brakedetectsarisk ofacollision, the system
will alert you both visually and acoustically. If
you do not brake or takeevasive action,the
system will warn you by automatically braking
the vehicle gently. If thereisanincreased risk
of collision, preventative passenger
protection measures (PRE-SAFE®)are
activated (Ypage 54). Ifarisk of collision
remains at speeds of over 20 mph
(30 km/h) and you do not brake, takeevasive
action or significantly accelerate, automatic
brakingmay be performed up to and including
emergency braking. Automatic emergency
brakingisnot performed until immediately
prior to an accidentthat can no longer be
avoided.
Theftdeterrent locking system
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
XTo activate with the SmartKey:remove
the SmartKey from the ignition lock.
XTo activate with KEYLESS-GO:switchthe
ignition off and open the driver'sdoor.
XTo deactivate:switchonthe ignition.
When leaving the vehicle, always takethe
SmartKey with you and lock the vehicle.
Anyone can start the engineifavalid
SmartKey has been left inside the vehicle.
iThe immobilizer is always deactivated
when you start the engine.
In the event that the enginecannot be
started when the starter battery is fully
charged, the immobilizer may be faulty.
Theft deterrent locking system73
Safety
Z

ProblemPossible causes/consequences andSolutions
The engine cannot be
started using the
SmartKey.
The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary
(Ypage 324).
or
XJump-start the vehicle (Ypage 326).
or
XConsultaqualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
Adoor is open. Therefore, the SmartKey cannot be detected as
easily.
XClose the door and try to start the vehicle again.
There is interferencefromapowerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshiftingthe automatic transmission out of
park positionP
RStart the engine.
There isarisk of an accident and injury.
When leaving the vehicle, alwaystake the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there isarisk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
Unlocking and opening doors from
the inside
You can openadoor from inside the vehicle
even if it has been locked. If the vehicle has
been locked with the SmartKey or with
KEYLESS-GO, openingadoor from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Ypage 74).
You can only open the rear doors from inside
the vehicle if they are not secured by the
child-proof locks (Ypage 65).
82Doors
Opening and closing

The blueindicator lamp in the
instrument cluster lights up when the high-
beam headlamps are switched on.
XTo switch off the high-beam
headlamps:move the combination switch
back to its normal position.
The blueindicator lamp in the
instrument cluster goes out.
iVehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active,
it controls activation of the high-beam
headlamps (Ypage 121).
High-beam flasher
High-beam headlamps
Turn signal, right
$High-beam flasher
!Turn signal, left
XTo switch on:turn the SmartKey in the
ignition lock to position1or2,orstart the
engine.
XPull the combination switch in the direction
of arrow$.
Hazard warning lamps
XTo switch on the hazard warning lamps:
press button.
All turn signals flash. If you now switch on
aturn signal using the combination switch,
only the turn signal lamp on the
corresponding side of the vehicle will flash.
XTo switch off the hazard warning
lamps:press button.
The hazard warning lamps automatically
switch on if:
Ran air bag is deployed
Rthe vehicle decelerates rapidly from a
speed of more than 45 mph (70 km/h) and
comes toastandstill
The hazard warning lamps switch off
automatically if the vehicle reachesaspeed
of over6mph (10 km/h) again afterafull
brake application.
iThe hazard warning lamps still operate if
the ignition is switched off.
Headlampcleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated five times (Ypage 125)while the
lightsare on and the engineisrunning. When
you switchoff the ignition, the automatic
headlamp cleaning systemisreset and
counting is resumed from 0.
120Exterior lighting
Lights and windshield wipers

The Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in the
vehicle.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button,the engine starts
immediately.
The Start/Stop button can be removed from
the ignition lock. Then, you can insert the
SmartKey into the ignition lock.
iYou do not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle. You should, however,
alwaystake the SmartKey with you when
leaving the vehicle. As long as the
SmartKey is in the vehicle:
Rthe vehicle can be started using the
Start/Stop button and
Relectrically powered equipment can be
operated.
Key positions with KEYLESS-GO
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. If an indicator lamp does not go out after
starting the engine or lights up while driving,
see (Ypage 266).
XInsert Start/Stop buttoninto ignition
lock.
iWhen you insert Start/Stop button
into ignition lock,the system needs
approximately two seconds recognition
time. You can then use Start/Stop
button.
Activating power supply
XPosition0:ifStart/Stop buttonhas not
yet been pressed, this corresponds to the
SmartKey being removed from the ignition.
XPosition1:press Start/Stop button.
The power supply is switched on. You can
now activatethe windshield wipers, for
example.
iIf you then open the driver's door when in
this position, the power supply is
deactivated.
Switching on the ignition
XPosition2(ignition): press Start/Stop
buttontwice.
The ignition is switched on.
iThe ignition is switched off when:
Rthe driver's door is opened and
Ryou press Start/Stop buttononce
when in this position.
Start/Stop button
$USA only
!Canada only
148Driving
Driving and parking