2014 MERCEDES-BENZ CLS check engine

You could therefore lock yourself out if:
Rthe vehicle is being pushed.
Rthe vehicle is being towed.
Rthe vehicle is onaroller dynamometer.
You can also switchthe automatic locking
function on and off using the on-board
computer (Ypage 232).
Unlocking thedriver'sdoor
(mechanical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
XTake the mechanical key out of the
SmartKey (Ypage 78).
XInsert the mechanical key intothe lock of
the driver's door as far as it will go.

To unlock
XTurn the mechanical key counter-clockwise
to position
.
The door is unlocked.
XTurn the mechanical key back and remove
it.
XInsert the mechanical key intothe
SmartKey.
If you use the mechanical key to unlockand
open the driver's door, the anti-theftalarm
system will be triggered(Ypage 74).
Locking thevehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey, use the mechanical key.
XOpen the driver's door.
XClose the front-passenger door, the rear
doors and the trunk lid.
XPress the locking button (Ypage 83).
XCheck whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs manually, if necessary (Ypage 82).
XClose the driver's door.
XTake the mechanical key out of the
SmartKey (Ypage 78).
XInsert the mechanical key intothe lock of
the driver's door as far as it will go.

To lock
XTurn the mechanical key clockwise as far
as it will go to position
.
XTurn the mechanical key back and remove
it.
XMake sure that the doors and the trunk lid
are locked.
XInsert the mechanical key intothe
SmartKey.
Trunk
Important safety notes
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide.Exhaust
gases can enter the vehicleinteriorifthe
trunk lidisopenwhen the engine is running,
84Trunk
Opening and closing

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Correct driver's seat position
GWARNING
You could lose controlofyour vehicle if you
do the following while driving:
Radjust the driver'sseat, head restraint,
steering wheel or mirrors
Rfastenthe seat belt
There isarisk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before startingthe engine.
XObserve the safety guidelines on seat
adjustment (Ypage 99).
XMake sure that seat$is adjusted
properly.
Electrical seat adjustment (Ypage 100)
When adjusting the seat, make sure that:
Ryou are as far away from the driver's air bag
as possible.
Ryou are sitting inanormal upright position.
Ryou can fasten the seat belt properly.
Ryou have moved the backrest to an almost
vertical position.
Ryou have set the seat cushion angle so that
your thighs are gently supported.
Ryou can depress the pedals properly.
XCheck whether the head restraint is
adjusted properly.
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the center of the head restraint.
XObserve the safety guidelines on steering
wheel adjustment (Ypage 106).
XMake sure that steering wheelis
adjusted properly.
Adjustingthe steering wheel electrically
(Ypage 106)
When adjusting the steering wheel, make
sure that:
Ryou can hold the steering wheel with your
arms slightly bent.
Ryou can move your legs freely.
Ryou can see all the displays in the
instrumentcluster clearly.
XObserve the safetyguidelinesfor seat belts
(Ypage 55).
XCheck whether you have fastened seat
beltproperly (Ypage 56).
98Correct driver'sseat position
Seats, steering wheel and mirrors

Problems with the windshield wipers
ProblemPossible causes/consequences andSolutions
The windshield wipers
are jammed.
Leaves or snow, for example, may be obstructing the windshield
wiper movement.The wiper motor has been deactivated.
XFor safety reasons, you should remove the SmartKey from the
ignition lock.
or
XSwitch off the engine using the Start/Stop button and open the
driver's door.
XRemove the cause of the obstruction.
XSwitch the windshield wipers back on.
The windshield wipers
fail completely.
The windshield wiper drive is malfunctioning.
XSelect another wiper speed on the combination switch.
XHave the windshield wipers checked ataqualified specialist
workshop.
128Windshield wipers
Lights and windshield wipers

Starting the engine
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.
Rshift the automatic transmission out of
parking position P.
Rstartingthe engine.
There isarisk of an accident and injury.
When leaving the vehicle, always take 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
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
isarisk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There isarisk
of fire.
Carry out regular checkstomake sure that
there are no flammable foreign materials in
the engine compartmentorinthe exhaust
system.
!Do not depress the accelerator pedal
when startingthe engine.
General notes
iThe catalytic converter is preheated for
up to 30 seconds afteracold start. The
sound of the engine may change during this
time.
Automatic transmission
XShift the transmission to positionP.
The transmission position display in the
multifunction display showsP.
iYou can also start the engine when the
transmission is in positionN.
Starting procedurewith the SmartKey
iTo start the engine using the SmartKey
instead of KEYLESS-GO, pull the Start/
Stop button out of the ignition lock.
XTurn the SmartKey to position3in the
ignition lock (Ypage 147) and release it as
soon as the engine is running.
Using KEYLESS-GO to startthe engine
iThe Start/Stop button can be usedto
start the vehicle manually without inserting
the SmartKey into the ignition lock. The
Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in
the vehicle. This mode for starting the
engine operates independently of the ECO
start/stop automatic engine start function.
XDepress the brake pedal and keep it
depressed.
XPress the Start/Stop button once
(Ypage147).
The engine starts.
Driving149
Driving and parking
Z

Problems with the engine
ProblemPossible causes/consequences andSolutions
The engine does not
start. The starter motor
can be heard.
RThere isamalfunction in the engine electronics.
RThere isamalfunction in the fuel supply.
XBefore attempting to start the engine again, turn the SmartKey
in the ignition back to position0or press the Start/Stop button
repeatedly until all indicator lamps in the instrumentcluster go
out.
XTry to start the engine again (Ypage 149). Avoid excessively
long and frequent attemptstostart the engine as these will drain
the battery.
If the engine does not start after several attempts:
XConsultaqualified 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.
XJump-startthe vehicle (Ypage 326).
If the engine does not start despite attemptstojump-start it:
XConsultaqualified specialist workshop.
The starter motor was exposed toathermal load that was too high.
XAllow the starter motor to cool down for approximately two
minutes.
XTry to start the engine again.
If the engine still does not start:
XConsultaqualified specialist workshop.
The engine is not
running smoothly and
is misfiring.
There isamalfunction in the engine electronics or inamechanical
componentofthe engine management system.
XOnly depress the accelerator pedal slightly.
XHave the cause rectified immediately ataqualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it.
The coolant
temperature gauge
showsavalue above
248‡(120 †).
The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant
to cool down.
XCheck the coolant level (Ypage 308). Observe the warning
notes as you do so and add coolant if necessary.
154Driving
Driving and parking

Automatictransmission
Important safety notes
GWARNING
If theenginespeedisabovetheidlingspeed
and you engage transmission positionDor
R,thevehiclecould pull away suddenly. There
isariskofanaccident.
When engagingtransmission positionDorR,
always firmly depress thebrakepedal and do
notsimultaneously accelerate.
GWARNING
The automatic transmission switches to
neutral positionNwhen you switchoff the
engine. The vehicle may roll away. There is a
risk of an accident.
After switching off the engine, always switch
to parking positionP.Prevent the parked
vehicle fromrolling away by applying the
parking brake.
Selector lever
Overview of transmission positions
Selector lever in AMG vehicles withPbutton
Park position with parking lock
\nReverse gear
Neutral
Drive
Transmission position and drive
program display
!If the transmission position display in the
multifunction display is not working, you
should pull away carefully to check whether
the desired transmission position is
engaged. Ideally,you should select
transmission positionDand drive program
C.Donot restrictthe shift range.
Transmission position display
Drive program display
The current position of the selector lever is
shown by the indicators next to the selector
lever.
The indicators light up when the SmartKey is
inserted into the ignition lock. The indicators
go out when the SmartKey is removed from
the ignition lock.
DIRECT SELECTlever
Overview of transmission positions
Park position with parking lock
\nReverse gear
Neutral
Drive
Automatic transmission155
Driving and parking
Z

The DIRECT SELECT lever is on the right of the
steeringcolumn.
iThe DIRECT SELECT lever alwaysreturns
to its original position. The current
transmission positionP,R,NorDappears
in the transmission position display
(Ypage 155) in the multifunction display.
Transmission position and drive
program display
!If the transmission position display in the
multifunction display is not working, you
should pull away carefully to check whether
the desired transmission position is
engaged. Ideally, you should select
transmission positionDand drive program
EorS.Donot restrict the shift range.
Transmission position display
Drive program display
The currenttransmission position and drive
programappear in the multifunction display.
iThe arrows in the transmission position
display show how and intowhich
transmission positionsyou can change
using the DIRECT SELECT lever.
Engaging parkposition P
!If theengine speed is toohigh or the
vehicle is moving, do not shift the
automatic transmission directly fromDto
R,fromRtoDor directly toP.The
automatic transmission could otherwise be
damaged.
Park position with parking lock
\nReverse gear
Neutral
Drive
XPush the DIRECT SELECT lever in the
direction of arrowP.
iThe automatic transmission shifts into
park positionPautomatically:
Rif you open the driver's door while the
vehicle is stationary in transmission
positionDorR
Rif you open the door while traveling at
very low speeds in transmission position
DorR
HOLD function or DISTRONIC PLUS:if the
vehicle is braked using the HOLD function or
DISTRONIC PLUS, the automatic
transmission shifts automatically to
transmission positionP.Inaddition,atleast
one of the following conditionsmust be
fulfilled:
Rthe engineisswitched off.
Rthe driver'sdoor is open and the seat belt
is not in the buckle.
156Automatic transmission
Driving and parking

Engaging drive position D
XWhen thevehicle is stationary, depress the
brakepedal.
XPush theDIRECT SELECT leverdown past
the first point of resistance.
Transmission positions
\rPark position
Do not shift the transmission into
positionP(Ypage 167) unless the
vehicle is stationary. The parking
lock should not be used asabrake
when parking. In addition to
engaging the parking lock, you
must always apply the parking
brake to secure the vehicle.
If the vehicle electronics are
malfunctioning, the transmission
may be locked in positionP.
Have the vehicle electronics
checked immediately ataqualified
specialist workshop.
Reverse gear
Only shift the transmission toR
when the vehicle is stationary.
Neutral
Do not shift the transmission toN
while driving. The transmission
could otherwise be damaged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brakes will allow you
to move the vehicle freely, e.g. to
push it or tow it.
If ESP®is deactivated or faulty:
only shift the transmission to
positionNif the vehicle is in danger
of skidding, e.g. on icy roads.
!Rolling in neutralNcan damage
the drive train.
Drive
The automatic transmission
changes gear automatically. All
forward gears are available.
Changing gear
The automatic transmission shifts to the
individual gears automatically when it is in
transmission positionD.This automatic
gearshifting behavior is determined by:
Rashift range restriction, if selected
Rthe selected drive program (Ypage 159)
Rthe position of the accelerator pedal
Rthe road speed
Driving tips
AMG vehicles
When shifting down, the double-clutch
function is active regardless of the currently
selected drive program. The double-clutch
function reduces load change reactions and
is conducive toasporty driving style. The
sound generated by the double-clutch
function depends on the drive program
selected.
158Automatic transmission
Driving and parking