2014 MERCEDES-BENZ CLS-Class engine

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

If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position N.
Drive particularly carefully on slippery road
surfaces .Avoid sudden acceleration, steering
and braking maneuvers. Do not use the cruise
control or DISTRONIC PLUS.
i For more information on driving with
snow chains, see (Y page337).
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitabl efor that purpose.
Changes in the outside temperature are
displayed after ashort delay.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded area soronbridges. The
vehicl ecoulds kid if you fail to adapt your
driving style .Always adapt your drivin gstyle
and drive at aspeed to suit the prevailing
weathe rconditions.
You should pay special attention to road
conditions when temperatures are around
freezin gpoint. Driving systems
Cruise control
Important safety notes Cruise control maintains
aconstant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select shift range
1, 2or 3in good time. By doing so, you will
make use of the braking effect of the engine.
This relieves the load on the brake system and
prevent sthe brakes from overheating and
wearing too quickly.
Use cruise control only if road and traffic
conditions make it appropriate to maintain a
steady speed for aprolonged period. You can store any road speed above 20 mph
(30 km/h).
If you fail to adapt your driving style, cruise
control can neither reduce the risk of an
accident nor override the laws of physics.
Cruise control cannot take into account the
road, traffic and weather conditions. Cruise
control is only an aid. You are responsible for
the distance to the vehicle in front,f
or vehicle
speed, for braking in good time and for
staying in your lane.
Do not use cruise control:
R in road and traffic conditions which do not
allow you to maintain aconstant speed e.g.
in heavy traffic or on winding roads
R on slippery road surfaces. Brakin gor
accelerating could cause the drive wheels
to lose traction and the vehicle could then
skid
R when there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is achange of drivers, advise the new
driver of the speed stored.
General notes Cruise control maintains
aconstant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select shift range
1, 2or 3in good time. By doing so, you will
make use of the braking effect of the engine,
which relieves the load on the brake system
and prevent sthe brakes from overheating
and wearing too quickly.
Use cruise control only if road and traffic
conditions make it appropriate to maintain a
steady speed for aprolonged period. You can
store any road speed above 20 mph
(30 km/h). Driving systems
175Driving and parking Z

Setting
aspeed X
Press the cruise control lever up 001Afor a
highe rspeed or down 0010for alower speed.
X To adjust the set speed in 1mph
increment s(1km/h increments): briefly
press the cruise contro llever up 001Aor
down 0010to the pressure point.
Ever ytime the cruise contro llever is
pressed up 001Aor down 0010the last speed
stored is increased or reduced.
X To adjust the set speed in 5mph
increment s(10 km/h increments):
briefly press the cruise contro llever
up 001A or down 0010to the pressure point.
Ever ytime the cruise contro llever is
pressed up 001Aor down 0010the last speed
stored is increased or reduced.
i Cruise contro lisnot deactivated if you
depress the accelerator pedal. For
example, if you accelerate briefly to
overtake, cruise contro ladjusts the
vehicle's speed to the last speed stored
after you have finished overtaking. Deactivating cruise control There are several ways to deactivate cruise
control:
X
Briefly press the cruise contro llever
forwards 001A.
or
X Brake.
Cruise contro lisautomatically deactivated if:
R you depress the parkin gbrake.
R you are drivin gatless than 20 mph
(30 km/h).
R ESP ®
intervenes or you deactivate ESP ®
R you shift the transmission to position N
while driving.
If cruise contro lisdeactivated, you will hear
aw arning tone. You will see the Cruise Contro
lOff message in the multifunction
display for approximately five seconds.
i When you switc hoff the engine, the last
speed stored is cleared. DISTRONIC PLUS
Importan tsafet ynotes G
WARNING
DISTRONIC PLUS does not react to:
R people or animals
R stationary obstacles on the road, e.g.
stopped or parked vehicles
R oncoming and crossing traffic Driving systems
177Driving and parking
Z

sensor system. DISTRONIC PLUS brakes
automaticallysot hat the set speed is not
exceeded.
Change into alower gear in good time on long
and steep downhill gradients. This is
especially important if the vehicle is laden. By
doing so, you will make use of the braking
effect of the engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
If DISTRONIC PLUS detects that there is arisk
of ac ollision, you will be warned visually and
acoustically.D ISTRONIC PLUS cannot
prevent acollision without your intervention.
An intermittent warning tone will then sound
and the distance warning lamp will light up in
the instrument cluster. Brake immediately in
order to increase the distance to the vehicle
in front or take evasive action provided it is
safe to do so.
For DISTRONIC PLUS to assist you, the radar
sensor system must be operational.
If there is no vehicle in front,D ISTRONIC
PLUS operates in the same way as cruise
control in the speed range between 20 mph
(Canada: 30 km/h) and 120 mph (Canada:
200 km/h). If avehicle is driving in front of
you, it operates in the speed range between
0m ph (0 km/h) and 120 mph (Canada:
200 km/h).
Do not use DISTRONIC PLUS while driving on
roads with steep gradients.
As DISTRONIC PLUS transmits radar waves,
it can resemble the radar detectors of the
responsible authorities. You can refer to the
relevant chapter in the Operator's Manual if
questions are asked aboutt his.
i USA only: This device has been approved
by the FCC as a"VehicularR adar System".
The radar sensor is intended for use in an
automotive radar system only. Removal,
tampering ,oralterin gofthedevice will void
any warranties, and is no tpermitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way. Anyu
nauthorized modification to this
device could void the user's authorit yto
operate the equipment.
i Canada only: This device complies with
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the
device will void any warranties, and is not
permitted. Do not tamper with, alter, or use
in any non-approved way.
Anyu nauthorized modification to this
device could void the user's authorit yto
operate the equipment.
Cruise control lever 001A
To stor ethe curren tspeed or ahigher
speed
0010 To stor ethe curren tspeed or alower
speed
0024 To deactivate DISTRONIC PLUS
0021 To stor ethe curren tspeed or call up the
last stored speed
001E To set the specified minimum distance Driving systems
179Driving and parking Z

vehicles and the right lane on right-hand
drive vehicles.
Vehicles with COMAND Example
:traffic circle
i The following function is not operational
in all countries.
DISTRONIC PLUS usesa dditionalinformation
from yourn avigation system so that it can
react appropriately to certain traffic
situations. This is the case if, while following
av ehicle, DISTRONIC PLUS is active and you:
R approach or drive through atraffic circle
R approach aT-intersection
R turn off at ahighwaye xit
Even if the vehicl einfront leaves the
detection range, DISTRONIC PLUS
temporarily maintains the current driving
spee dand does not accelerate. This is based
on the current map data in the navigation
system.
Afterwards, the vehicl eaccelerates back to
the spee dyou set.
Stopping G
WARNING
Never get out of the vehicl ewhen DISTRONIC
PLUS is activated.
DISTRONIC PLUS must alson ever be
operated, activated or deactivated by a
passenger or from outside the vehicle.
DISTRONIC PLUS does not replace the
parking brake and must not be used for
parking. The DISTRONIC PLUS braking effect is
canceled and the vehicl
ecan start moving if:
R DISTRONIC PLUS is deactivated using the
cruise control lever.
R you accelerate.
R there is amalfunction in the system or an
interruption in the power supply,e .g.
battery failure.
R the electrica lsystem in the engine
compartment, the battery or the fuses are
tampere dwith.
R the battery is disconnected.
If you wishtol eave the vehicl eorpark it,
deactivate DISTRONIC PLUS and secure the
vehicl eagainst rolling away.
If DISTRONIC PLUS detects that the vehicle
in front is stopping, it brakes yourv ehicle until
it is stationary.
Oncey our vehicle is stationary, it remains
stationary and you do not need to depress the
brake.
i Depending on the specified minimum
distance, your vehicle will come to a
standstill at asufficien tdistanc ebehin dthe
vehicle in front .The specified minimum
distance is set using the control on the
cruise control lever.
When DISTRONIC PLUS is activated, the
transmission is shifted automatically to
position Pif:
R the driver's door is open and the driver's
seat belt is unfastened.
R the engine is switched off, unless it is
automatically switched off by the ECO
start/stop function.
R the hood is opened.
R as ystem malfunction occurs.
R the power supply is not sufficient. 182
Driving systemsDriving and parking

There are several ways to deactivate
DISTRONIC PLUS:
X
Briefly press the cruise control lever
forwards 001A.
or
X Brake, unless the vehicle is stationary.
When you deactivate DISTRONIC PLUS, you
will see the DISTRONIC PLUS Off message
in the multifunction display for approximately
five seconds.
i The last speed stored remains stored until
you switch off the engine.
i DISTRONIC PLUS is not deactivated if you
depress the accelerator pedal.
DISTRONIC PLUS is automatically
deactivated if:
R you engage the parking brake
R you are driving slower than 15 mph
(25 km/h) and there is no vehicle in front,
or if the vehicle in frontisnol onger
detected
R ESP ®
intervenes or you deactivate ESP ®
R the transmission is in the P,Ror Nposition
R you pull the cruise control lever towards
you in order to pull away and the front-
passenger door or one of the rear doors is
open
R the vehicle has skidded
R you activat eActive Parking Assist
If DISTRONIC PLUS is deactivated, you will
hear awarning tone. You will see the
DISTRONIC PLUS Off message in the
multifunction display for approximately five
seconds.
Tips for driving with DISTRONIC PLUS General notes
Pay particular attention in the following traffic
situations:
R Cornering, going into and coming out of a
bend
R Vehicles traveling on adifferent line R
Other vehicles changin glanes
R Narrow vehicles
R Obstructions and stationary vehicles
R Crossing vehicles
In such situations, brake if necessary.
DISTRONIC PLUS is then deactivated.
Cornering, going into and coming out of a
bend The ability of DISTRONIC PLUS to detect
vehicles when cornering is limited. Your
vehicle may brake unexpectedly or late.
Vehicles traveling on
adifferent line DISTRONIC PLUS may not detec
tvehicles
traveling on adifferent line. The distance to
the vehicle in fron twill be too short. Driving systems
185Driving and parking Z

Important safety notes
G
WARNING
When leaving th evehicle, it can still rol laway
despit ebein gbraked by th eHOLD function if:
R there is amalfunction in the system or in
the voltage supply.
R the HOLD function has been deactivated by
pressing the accelerator pedal or the brake
pedal,e .g. byavehicle occupant.
R the electrical system in the engine
compartment,t he battery or the fuses have
been tampered with.
R the battery is disconnected
There is arisk of an accident.
If you wish to exit the vehicle, always turn off
the HOLD function and secure the vehicle
against rolling away.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes
automaticallyinc ertain situations. To
prevent damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in
the following or other similars ituations:
R when towin gthe vehicle
R in the car wash
Activation conditions You can activat
ethe HOL Dfunction if:
R the vehicle is stationary
R the engine is running or if it has been
automatically switched off by the ECO
start/stop function
R the driver's door is closed or your seat belt
is fastened
R the parking brak eisreleased
R the hood is closed
R the transmission is in position D,Ror N
R DISTRONIC PLUS is deactivated Activating th
eHOLD function X
Make sure that the activation conditions
are met.
X Depress the brak epedal.
X Quickly depres sthe brak epedal further
until 0007001A appears in the multifunction
display.
The HOL Dfunction is activated. You can
release the brak epedal.
i If depressing the brak epedal the first
tim edoes not activat ethe HOL Dfunction,
wait briefly and the ntry again.
Deactivatin gthe HOLD function The HOLD function is deactivated
automatically if:
R
you accelerate and the transmission is in
position Dor R.
R you shift the transmission to position P.
R you depress the brake peda lagain with a
certain amount of pressure until 0007
disappears from the multifunction display.
R you activate DISTRONIC PLUS.
When the HOLD function is activated ,the
transmission is shifted automatically to
position Pif:
R the driver's door is open and the driver's
seat beltisu nfastened.
R the engine is switched off, unless it is
automaticallys witched off by the ECO
start/stop function.
R the hood is opened.
R as ystem malfunction occurs.
R the power supplyisn ot sufficient. Driving systems
187Driving and parking Z