stop start MERCEDES-BENZ CLS-Class 2014 W218 Workshop Manual

Problem Possible causes/consequences and
000B Solutions
0017
The red coolant
warning lamp comes on
while the engine is
running.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator
may be blocked or the electric engine radiator fan may be
malfunctioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 308).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the coolant temperature is
under 248 ‡(120 †). Otherwise ,the engine coul dbedamaged.
X Drive to the nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainou sterrain, and stop-and-go traffic. 0017
The red coolant
warning lamp comes on
while the engine is
running.
Awarning tone
also sounds. The coolant temperature has exceeded 248
‡(120 †). The
airflow to the engine radiator may be blocked or the coolant level
may be too low.
G WARNING
The engine is not being coole dsufficiently and may be damaged.
Do not drive whe nyour engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catchf ire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is arisk of injury.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).274
Indicator and warning lampsint
he instrument clusterOn-board computer and displays

!
Make sure that the windshieldw ipers are
not folded away fro mthe windshield. You
could otherwise damage the windshield
wipers or the hood. X
Make sure that the windshield wipers are
turned off.
X Pull release lever 001Aon the hood.
The hood is released. X
Reach into the gap, pull hood catch
handle 0010up and lift the hood.
If you lift the hood by approximately
15 inches (40c m),the hood is opened and
held open automatically by the gas-filled
strut.
Closing theh ood X
Lower the hood and let it fall from aheight
of approximately 8inche s(20 cm).
X Check that the hood has engaged properly.
If the hood can be raised slightly ,itisnot
properly engaged. Open it again and close
it with alittle more force. Engine oil
General notes Depending on the driving style, the vehicle
consume
supto0.9 US qt (0.8 liters) of oil
over adistanc eof600 miles (1,000 km). The
oil consumption may be higher than this when
the vehicle is new or if you frequently drive at
high engin espeeds.
Depending on the engine, the oil dipstic kmay
be in adifferent location.
When checking th eoil level:
R park th evehicle on aleve lsurface.
R thee ngines hould be switched off for
approximately fiv eminute siftheengin eis
at normal operatin gtem perature.
R if th eengineisn otat normal operating
temperature, e.g .ifthe engine was only
started briefly, wait about 30 minutes
before carrying out the measurement.
Checking the oil level using the oil
dipstick X
Pull oil dipstick 001Aout of the dipstick guide
tube.
X Wipe off oil dipstick 001A.
X Slowly slide oil dipstick 001Ainto the guide
tube to the stop, and take it out again.
If the level is between MIN mark 0024and
MAX mark 0010,the oil level is correct.
X If the oil level has dropped to MIN mark
0024 or below, add 1.1 US qt (1.0 liter) of
engine oil. Engine compartment
307Maintenance and care Z

X
Park the vehicle on alevel surface.
Only check the coolant level when the
vehicle is on alevel surface and the engine
has cooled down.
X Turn the SmartKey to position 2in the
ignition lock (Y page 147).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 147).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡(70 †).
X Turn the SmartKey to position
0(Y page 147) in the ignition lock.
X Slowly turn cap 001Ahalf aturn counter-
clockwise to allow excess pressure to
escape.
X Turn cap 001Afurther counter-clockwise and
remove it.
If the coolant is at the level of marker bar
0024 in the filler neck when cold, there is
enough coolant in coolant expansion
tank 0010.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar 0024in the fuel
filler neck when warm, there is enough
coolant in expansion tank 0010.
X If necessary, add coolant that has been
tested and approved by Mercedes-Benz.
X Replace cap 001Aand turn it clockwise as far
as it will go.
For further information on coolant ,see
(Y page 377). Adding washer fluid to the windshield
washer system/headlam
pcleaning
system G
WARNING
Windshield washer concentrate is highly
flammable. If it comes int ocontac twith hot
engin ecomponent sorthe exhaust syste mit
could ignite. There is ariskoff ire and injury.
Make sure that no windshield washer
concentrate is spilled nex ttothe filler neck. X
To open: pull cap001Aupwards by the tab.
X Add the premixed washer fluid.
X To close: press cap 001Aontothe filler neck
until it engages.
The washer fluid reservoir is used for both the
windshield washer system and the headlamp
cleaning system.
If the washer fluid level drops below the
recommended minimum of 1liter ,am essage
appears in the multifunction display
promptin gyou to refill the washer fluid
(Y page 262).
Further information on windshield washer
fluid/antifreeze (Y page 378). Maintenance
ASSYST PLUS
Service messages The ASSYS
TPLUS service interval display
inform syou of the nex tservice due date. Maintenance
309Maintenance and care Z

Do not remove the SmartKe
yfromt he
ignition lock. Do not open the driver's
door or front-passenge rdoor when the
engine is switched off. Otherwise, the
automatic transmission selects park
position Pautomatically and locks the
wheels. You can prevent this by shifting
the automatic transmission to N
beforehand.
R Vehicles with KEYLESS-GO:
Do not open the driver's door or front-
passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position P
automatically and locks the wheels.
Observe the following to make sure that the
automatic transmission stays in position N:
X Make sure the vehicle is stationary and the
ignition is switched off.
X Turn the SmartKey to position 2in the
ignition lock (Y page 147).
Use the SmartKey instead of the Start/
Stop button on vehicles with KEYLESS-GO.
X Depress and hold the brake pedal.
X Shift the automatic transmission to
position N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the
SmartKey in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off
wax from the windshield and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residue on the
windshield.
Washing by hand In some countries, washing by hand is only
allowe
datspecially equipped washing bays. Observe the legal requirements in all
countries concerned.
X
Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use asoft sponge to clean.
X Use amild cleaning agent, such as acar
shampoo approved by Mercedes-Benz.
X Thoroughly hose down the vehicle with a
gentle jet of water.
X Do not point the water jet directly towards
the air inlet.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with achamois.
X Do not let the cleaning agent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
Power washers G
WARNING
The water jet from acircular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components.
Component sdamaged in this way may fail
unexpectedly. There is arisk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately.
! Always maintain adistance of at least
11.8in( 30 cm) between the vehicl eand the
powe rwasher nozzle. Information about
th ec orrec tdistanc eisavailabl efromt he
equipmen tmanufacturer.
Mov ethe power washe rnozzle around
when cleaning your vehicle.
Do not aim directly at any of the following:
R tires
R door gaps, roof gaps, joints, etc.
R electrical components 312
CareMaintenance and care

001E
Alignment bolt
0025 Sheet for faulty wheel
0009 Tire inflation compressor
0016 Lugw rench
001D Fusealloc ation chart
X Ope nthe trunk lid.
X Lift the trunk floor upwards (Y page 283).Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
R MOExtended tires (tires with run-flat
properties) (Y page 321)
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
R an emergency spare wheel(Y page 367)
Information on changing/mounting awheel
(Y page 357).
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 167).
X If possible, bring the front wheels into the
straight-ahead position.
X Vehicles with AIRMATIC: make sure that
"normal" level is selected (Y page 189).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronicsn ow have status
0.T his is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 147). X
All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while awheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditionsw hen doing so.
X Close the driver's door. MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is
atotal loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognizeM OExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-
bearing capacity and the speed index
(Y page 351).
MOExtended tires may only be used in
conjunction with an active tire pressure loss
warning system or with an active tire pressure
monitor.
If the pressurel oss warning message
appearsint he multifunction display:
R Observe the instructions in the display
messages (Y page 258).
R Check the tire for damage.
R If driving on, observe the following notes.
The maximum driving distance is
approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden. Flat tire
321Breakdown assistance

In addition to the vehicle load, the driving
distance possible depends upon:
R
Speed
R Roadc ondition
R Outside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving
conditions/maneuvers, or it can be increased
through amoderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceed amaximum speed of
50 mph (80 km/h).
i When replacing one or all tires, make sure
that you use only tires:
R of the size specified for the vehicle and
R marked "MOExtended"
If at ire has gone flat and cannot be
replaced with aMOExtended tire, a
standard tire may be used as atemporary
measure. Make sure that you use the
proper size and type (summe rorwinter
tire).
Important safety notes G
WARNING
When drivin ginemergenc ymode, the driving
characteristics deteriorate, e.g. when
cornering, accelerating quickly and when
braking. There is arisk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steerin gand drivin gmaneuvers,
and drivin gover obstacles (curbs, potholes,
off-road). This applies in particular to aladen
vehicle.
Stop drivin ginemergenc ymode if:
R you hear bangin gnoises.
R the vehicle starts to shake.
R you see smok eand smell rubber. R
ESP ®
is intervenin gconstantly.
R there are tear sinthe sidewalls of the tire.
After drivin ginemergency mode, have the
wheel rims checked at aqualified specialist
workshop with regar dtotheir further use. The
defectiv etirem ust be replaced in ever ycase. Battery (vehicle)
Important safety notes
Special tools and expert knowledge are
require dwhen working on the battery, e.g.
removal and installing. You should therefore
have all work involvin gthe battery carried out
at aq ualified specialist workshop. G
WARNING
Work carried out incorrectly on the battery
can lead, for example, to ashor tcircuit and
thus damage the vehicle electronics. This can
lead to function restriction sapplying to
safety-relevan tsystems ,e.g.t he lighting
system, AB S(anti-loc kbrakin gsystem) or
ESP ®
(Electronic Stabilit yProgram). The
operating safet yofyour vehicl emay be
restricted. You could lose control of the
vehicle, for example:
R braking
R in th eevent of abrup tsteerin gmaneuver
and/o rwhen the vehicle's speed is not
adapted to the road conditions
There is arisk of an accident.
In the event of ashort circuit or asimilar
incident, contact aqualified specialist
workshop immediately. Do not drive any
further. You should have all work involving the
battery carried out at aqualifie dspecialist
workshop. G
WARNING
Electrostatic build-up can lead to th ecreation
of sparks ,whic hc ould ignite th ehighly
explosive gases of abattery. Ther eisariskof
an explosion. 322
Battery (vehicle)Breakdown assistance

X
First, remove the jumper cable sfrom earth point 001Eand negative terminal 0021,then from
positiv eclamp 0010and positiv eterminal 0024.Begine acht ime at the contacts on your own
vehicle first.
X Close cover 001Aof positiv eclamp 0010afte rremoving the jumper cables.
X Have the battery checke dataqualified specialist workshop.
i Jump-startin gisnot considered to be anormal operatin gcondition.
i Jumper cables and further information regardin gjump-starting can be obtained at any
qualified specialist workshop. Towing and tow-starting
Importan
tsafet ynotes G
WARNING
Function srelevant to safety are restricted or
no longer available if:
R the engin eisnot running.
R the brake system or the power steering is
malfunctioning.
R ther eisam alfunction in the voltage supply
or the vehicle's electrical system.
If your vehicle is being towed, much more
forc emay be necessary to steer or brake.
There is arisk of an accident.
In such cases, use atow bar. Befor etowing,
make sure that the steering moves freely. G
WARNING
If the weight of the vehicle to be towed or tow-
started is greater than the permissible gross
weight of your vehicle:
R the towin geye could detach itself
R the vehicle/trailer combination could
rollover.
There is arisk of an accident.
When towin gortow-starting another vehicle,
its weight should not be greater than the
permissible gross weight of your vehicle.
Information on your vehicle's gross vehicle
weight ratin gcan be found on the vehicle
identification plate (Y page 372). !
If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes
automatically in certain situations. To
preven tdamage to th evehicle ,deactivate
DISTRONI CPLUS and the HOLD function in
the following or other similar situations:
R when towing the vehicle
R in the car wash
! Only secure the tow rope or tow bar at the
towing eyes. Otherwise ,the vehicle could
be damaged.
! Do not use the towing eye for recovery,
this could damage the vehicle .Ifindoubt,
recover the vehicle with acrane.
! When towing, pulla wayslowly and
smoothly .Ifthe tractive power is too high,
the vehicles could be damaged.
! Do not tow with sling-type equipment.
This could damage the vehicle.
! When towing vehicles with KEYLESS-GO,
use the key instead of the Start/Stop
button. Otherwise, the automatic
transmission may shift to position Pwhen
the driver's or front-passenger door are
opened, which could lead to damage to the
transmission.
! The vehicle can be towed amaximum of
30 miles (50km). The towing speed of
30 mph (50 km/h) must not be exceeded.
If the vehicle has to be towed more than
30 miles (50km), the entire vehicle must be
raised and transported. 328
Towing and tow-startingBreakdown assistance

X
Take cover 0010off the opening.
X Screw in and tighten the towing eye
clockwise to the stop.
Removing the towing eye X
Unscrew and remove the towing eye.
X Position the top of cover 001Ain the bumper
and press it in at the bottom until it
engages.
X Attach cover 0010to the bumper and press
until it engages.
X Place the towing eye in the vehicle tool kit. Towing the vehicle with the rear axle
raised
! The ignition must be switched off if you
are towing the vehicle with the rear axle
raised. Intervention by ESP ®
could
otherwise damage the brake system.
Only possible for vehicles without
4MATIC.
X Switc hont he hazard warning lamps
(Y page 120).
X Turn the SmartKey to position 0in the
ignition lock and remove the SmartKey
from the ignition lock.
X When leaving the vehicle, take the
SmartKey or the KEYLESS-GO key with you.
When towing your vehicle with the rear axle
raised, it is importan tthat you observe the
safety instructions (Y page 328).Towing
avehicle with both axles on
th eg round
It is importan tthat you observe the safety
instructions when towing away your vehicle
(Y page 328). The automatic transmission automatically
shifts to position
Pwhen you open the driver's
or front-passenger door or when you remove
the SmartKey from the ignition lock. In order
to ensure that the automatic transmission
stays in position Nwhen towing the vehicle,
you must observe the following points:
X Make sure that the vehicle is stationary and
the SmartKey in the ignition lock is in
position 0.
X Turn the SmartKey to position 2in the
ignition lock.
On vehicles with KEYLESS-GO, use the
SmartKey instead of the Start/Stop button
(Y page 147).
X Depress and hold the brake pedal.
X Shift the automatic transmission to
position N.
X Release the brake pedal.
X Release the parking brake.
X Switch on the hazard warning lamps
(Y page 120).
X Leave the SmartKey in position 2in the
ignition lock.
i When towing with the hazard warning
lamps switched on, use the combination
switch as usualtos ignalachange of
direction. In this case, only the indicator
lamps for the direction of travel flash. After
resetting the combination switch, the
hazard warning lamp starts flashing again. Transporting the vehicle
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle
such as axle or steering components.
Otherwise, the vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto atrailer or transporter for transporting
purposes. 330
Towing and tow-startingBreakdown assistance

X
Turn the SmartKey to position 2in the
ignition lock.
X Shift the automatic transmission to
position N.
As soon as the vehicle is loaded:
X Prevent the vehicle from rolling away by
applying the parking brake.
X Shift the automatic transmission to
position P.
X Turn the SmartKey to position 0in the
ignition lock and remove the SmartKey
from the ignition lock.
X Secure the vehicle. Notes on 4MATIC vehicles
! Vehicles with 4MATI Cmust not be towed
with either the frontort he rear axle raised,
as doing so will damage the transmission.
If the vehicle has transmission damage or
damage to the front or rear axle, have it
transported on atransporter or trailer.
In the event of damage to the electrical
system
If the battery is defective, the automatic
transmission will be locked in position P.To
shift the automatic transmission to position
N,y ou must provide power to the vehicle's
electrical system in the same way as when
jump-starting (Y page 326).
Have the vehicle transported on atransporter
or trailer. Tow-starting (emergency engine
starting)
! Vehicles with automatic transmission
must not be started by tow-starting. This
could otherwise damage the transmission.
You can find information on "Jump-starting"
at (Y page 326). Fuses
Important safety notes
G
WARNING
If you manipulate or bridge afaulty fuse or if
you replace it with afuse with ahigher
amperage, the electric cables could be
overloaded. This could result in afire. There
is ar isk of an accident and injury.
Always replace faulty fuses with the specified
new fuses having the correct amperage.
! Only use fuses that have been approved
for Mercedes-Ben zvehicles and which
have the correct fuse ratin gfor the system
concerned. Otherwise, componentsor
systems could be damaged.
The fuses in your vehicle serve to close down
faulty circuits. If afuse blows ,all the
component sonthecircuit and their functions
stop operating.
Blown fuse smust be replace dwith fuses of
the same rating, which you can recognize by
the color and value. The fuse ratings are listed
in the fuse allocation chart.
If an ewly inserted fuse also blows, have the
cause traced and rectified at aqualified
specialist workshop, e.g. an authorized
Mercedes-Ben zCenter. Befor
echanging afuse
X Secure the vehicle against rolling away
(Y page 167).
X Switc hoff all electrical consumers.
X Turn the SmartKey to position 0in the
ignition lock and remove it (Y page 147).
or
X On vehicles with KEYLESS-GO, make sure
the ignition is switched off (Y page 147).
All indicator lamps in the instrument cluster
must be off. Fuses
331Breakdown assistance Z

Example: current tire pressure display
Important safety notes
G
WARNING
Each tire ,including the spare (i fprovided),
should be checked at least once every two
weeks when cold and inflated to the pressure
recommended by the vehicl emanufacturer
on the Tire and Loading Information placard
on the driver' sdoor B-pillar or the tire
pressure label on the inside of the fuel filler
flap .Ify our vehicle has tires of adifferent size
than the size indicated on the Tire and Loading
Information placard or, if available, the tire
pressure label, you should determin ethe
proper tire pressure for those tires.
As an added safety feature, your vehicle has
been equipped with atire pressure monitoring
system (TPMS) that illuminates alow tire
pressure telltale when one or more of your
tires are significantly underinflated.
Accordingly, when the low tire pressure
telltale lights up, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Drivin gona
significantly underinflated tire causes the tire
to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle's
handling and stopping ability. Please note that
the TPMS is not asubstitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correc ttire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The TPMS malfunction indicator is combined with
the low tire pressure telltale. When the
system detect
samalfunction, the warning
lamp will flash for approximately aminute and
then remain continuously illuminated. This
sequence will be repeated every time the
vehicle is started as long as the malfunction
exists. When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for avariety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate Tires and wheels allow the TPMS to
continue to function properly.
It is the driver's responsibility to set the tire
pressure to that recommended for cold tires
which is suitable for the operating situation
(Y page 338). Note that the correc ttire
pressure for the current operating situation
must first be taught-in to the tire pressure
monitor. If there is asubstantial loss of
pressure, the warning threshold for the
warning message is aligned to the reference
values taught-in .Restart the tire pressure
monitor after adjustin gthe pressure of the
cold tires (Y page 345). The current
pressures are saved as new reference values.
As aresult, awarning message will appear if
the tire pressure drops significantly.
The tire pressure monitor does not warn you
of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
(Y page 338).
The tire pressure monitor is not able to warn
you of asudden loss of pressure, e.g. if the
tire is penetrated by aforeign object. In the
event of asudden loss of pressure, bring the
vehicle to ahalt by brakin gcarefully. Avoid
sudden steering movements Check
343Wheels and tires Z