2012 MERCEDES-BENZ CLS COUPE stop start

Problem Possible causes/consequences and
M Solutions
Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or in amechanical
componentoft he engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at aqualified specialist
workshop. The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be lit and a
warning tone may
sound. 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 299). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct, the engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic. Automatic transmission
Important safety notes
G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor
R,t he vehicle could pull away suddenly. There
is ar isk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do
not simultaneously accelerate. Selector lever
Overview of transmission positions Selector lever in AMG vehicles with
Pbutton
j Park position with parking lock
k Reverse gear
i Neutral
h Drive 148
Automatic transmissionDriving and parking

i
The automatic transmission shifts auto-
matically into park position Pif you:
R open the driver's door when the vehicle
is stationary and the transmission is in
position Dor R
R open the driver's door when driving at
very low speed with the transmission in
position Dor R
i Depress the brake and push the DIRECT
SELECT lever up or down to disengage the
parking lock. The transmission is in neutral
N.
If you want to shift from park position P
directly to Ror D:
R depress the brake and
R push the DIRECT SELECT lever up or
down past the first point of resistance.
Engaging reverse gear R !
Only shift the automatic transmission to
R when the vehicle is stationary.
X Push the DIRECT SELECT lever up past the
first point of resistance.
Neutral Nwith ECO start/stop function
activated The ECO start/stop function switches the
engine off automatically when the vehicle is
stationary if the vehicle is braked to
astand-
still in neutral N.
For further information on the ECO start/stop
function, see (Y page 144).
Shifting to neutral (N) X
Push the DIRECT SELECT lever up or down
to the first point of resistance.
Drive position Dwith ECO start/stop
function activated The ECO start/stop function switches the
engine off automatically when the vehicle is braked to
astandstill in transmission posi-
tion D.
For further information on the ECO start/stop
function, see (Y page 144).
Engaging drive position D X
Push the DIRECT SELECT lever down past
the first point of resistance. Transmission positions
B
Park position
This prevent
sthe vehicle from roll-
ing away when stopped. Do not
shift the transmission into position
P(Y page 159) unless the vehicle
is stationary.
The automatic transmission shifts
to Pautomatically if you:
R remove the key
R switch off the engine when in R
or Dand open one of the front
doors C
Reverse gear
Only shift the transmission to
R
when the vehicle is stationary. 150
Automatic transmissionDriving and parking

A
Neutral
Do not shift the transmission to
N
whil edriving. Otherwise, the auto-
matic transmission could be dam-
aged.
If ESP ®
is deactivated or faulty:
onl yshift the transmission to posi-
tion Nif the vehicl eisindangerof
skidding, e.g. on icy roads.
If you switch off the engine using
the key or the Start/Stop button,
the automatic transmission shifts
to neutral Nautomatically.
! Rolling in neutral Ncan lead to
damage to the transmission. 7
Drive
The automatic transmission
changes gear automatically. All
forward gears are available.
Changing gear
The automatic transmission shifts to the indi-
vidualg ears automaticallyw hen it is in trans-
mission position D.Gearshifting is deter-
mined by:
R as hift range restriction, if selected
R the selected drive program( Ypage 151)
R the position of the accelerator pedal
R the road speed Driving tips
Accelerator peda lposition Your style of driving influences how the auto-
matic transmission shift sgear:
R little throttle: early upshifts
R more throttle: late upshifts AMG vehicles When shifting down, the double-clutc
hfunc-
tion is active regardless of the currently selec-
ted drive program. The double-clutc hfunction
reduces load change reactions and is condu-
cive to asport ydriving style. The sound gen-
erated by the double-clutc hfunction depends
on th edrivep rogram selected.
Kickdown Use kickdown for maximum acceleration.
X
Depress th eaccelerato rpedal beyond the
pressure point.
The transmission shift stoalower gear
depending on the engin espeed.
X Ease off the accelerator pedal oncet he
desired speed is reached.
The automatic transmission shift sback up. Program selector button
General notes Example: program selector button
X
Press program selector button :repeat-
edly until the letter for the desired gearshift
program appears in the multifunction dis-
play.
The program selector button allows you to
choose between differen tdriving character-
istics. Automatic transmission
151Driving and parking Z

Problems with the transmission
Problem Possible causes/consequences and
M Solutions
The transmission has
problems shifting gear. The transmission is losing oil.
X
Have the transmission checked at aqualified specialist work-
shop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked at aqualified specialist work-
shop immediately. Refuelling
Important safety notes
G
WARNING
Fuel is highly flammable. Fire, naked flames
and smoking are therefore prohibited when
handling fuels.
Switch off the engine and the auxiliary heating
before refuelling. G
WARNING
Avoid contact with fuels.
It is hazardous to your health if your skin
comes into direct contact with fuels or you
breathe in fuel vapours. G
WARNING
Do not use petrol to refuel adiesel tank.N ever
mix diesel with petrol. Doin gsocould damage
the fuel system and the engine. The vehicle
could also catc hfire.
! Do not use petrol to refuel vehicles with a
diesel engine. Do not use diesel to refuel vehicles with
apetrol engine. Even small
amounts of the wrong fuel result in damage
to the fuel system and the engine.
! Do not switch on the ignition if you acci-
dentally refuel with the wrong fuel. Other-
wise, the fuel will enter the fuel lines. Notify
aq ualified specialist workshop and have
the fuel tank and fuel lines drained com-
pletely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use afilter when adding fuel from afuel
can. The fuel lines and/or the diesel injec-
tion system could otherwise be blocked by
particles from the fuel can.
Further information on fuel and on fuel grades
can be found in the "Fuel" section
(Y page 360). 156
RefuellingDriving and parking

Switching off the engine
Vehicles with automatic transmission X
Firmly depress the parking brake.
X All vehicles (except AMG vehicles): shift
the transmission to position P.Selector lever in AMG vehicles with
Pbutton
X AMG vehicles: pressPbutton :.
Using the key
X Turn the key to position 0in the ignition
lock and remove it.
The immobiliser is activated.
i If you switch the engine off with the trans-
mission in position Ror D,t he automatic
transmission shifts to Nautomatically.
If you then open one of the front doors or
remove the key from the ignition, the auto-
matic transmission shifts to P.
If you shift the automatic transmission to
N before switching off the engine, the auto-
matic transmission remains in Neven if a
door is opened.
Using KEYLESS-GO
X Press the Start/Stop button (Y page 141).
The engine stops and all the indicator
lamps in the instrumen tcluster go out.
i When the driver's door is closed, this cor-
responds to key position 1.When the driv-
er's door is open ,this corresponds to key
position 0,i.e. key removed.
i If you use the Start/Stop button to switch
off the engine, the automatic transmission
shift stoNautomatically. If you the nopen one of the fron
tdoors, the automatic trans-
mission shifts to P.
i The engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for about three sec-
onds. This function operates independently
of the ECO start/stop automatic engine
switch-off function. Parking brake
G
WARNING
If you must brake the vehicle with the parking
brake, the braking distance is considerably
longer and the wheels could lock. This increa-
ses the risk of skidding and an accident.
Only use the parking brake to brake the vehi-
cle when the service brake is faulty. Do not
apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turnin gagain. G
WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine.
They could also operate the vehicle's equip-
ment.T here isarisk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unsupervised in the vehicle. 160
ParkingDriving and parking

tanc
ebetween your vehicl eand the vehicl ein
front become stoo small.
i Whe nchanging lanes, DISTRONIC PLUS
monitors the left lane for left-hand-drive
vehicles and the right lane for right-hand-
drive vehicles.
Vehicles with COMAND Online
i The following function is not operational
in all countries.
DISTRONIC PLUS uses additional information
from your navigation system so that it can
react appropriately to certain traffic situa-
tions. This is the case if, while following a
vehicle, DISTRONIC PLUS is active and you:
R approach or drive around aroundabout
R approach aT-junction
R turn off at amotorway exit
Even if the vehicle in front leaves the detec-
tion range, DISTRONIC PLUS temporarily
maintains the current driving speed and does
not accelerate. This is based on the current
map data in the navigation system. Example: roundabout
The current speed is maintained:
R
approximately ten seconds before the
roundabout/T-junction and for approx-
imately 1.5seconds when driving on the
roundabout
R approximately twelve seconds before
reaching amotorway exit and approx-
imately four seconds after the motorway
exit Afterwards, the vehicle accelerates back to
the set speed you specified.
Stopping G
WARNING
Never get out of the vehicle when DISTRONIC
PLUS is activated.
DISTRONIC PLUS must also never be oper-
ated, activated or deactivated by apassenger
or from outside the vehicle.
DISTRONIC PLUS does not replace the park-
ing brake and must not be used for parking.
The DISTRONIC PLUS braking effect is can-
celled and the vehicle can 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. bat-
tery failure.
R the electrical system in the engine com-
partment,t he battery or the fuses are tam-
pered with.
R the battery is disconnected.
If you wish to leave the vehicle or park it,
deactivate DISTRONIC PLUS and secure the
vehicle against rolling away.
If DISTRONIC PLUS detectst hat the vehicle
in front is stopping, it brakes your vehicle until
it is stationary.
Once your vehicle is stationary, it remains
stationary and you do not need to depress the
brake.
i Depending on the specified minimum dis-
tance, your vehicle will come to astandstill
at as ufficient distance behind the vehicle
in front.T he specified minimum distance is
set using the control on the cruise control
lever. 174
Driving systemsDriving and parking

When DISTRONIC PLUS is activated, the
transmission is shifted automatically to posi-
tion 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 auto-
matically switched off by the ECO start/
stop function.
R the bonnet is opened.
R as ystem fault occurs.
R the power supply is not sufficient.
Setting aspeed X
Press the cruise control lever up :for a
highe rspeed or down ;for alower speed.
X Keep the cruise contro llever pressed until
the desired speed is reached.
X Release the cruise contro llever.
The new speed is stored. DISTRONIC PLUS
is activated and adjusts the vehicle's speed
to the new speed stored.
X To adjust the set speed in 1km/h incre-
ments: briefly press the cruise control
lever up :or down ;to the pressure
point.
The last stored speed increases or decrea-
ses in 1km/ hincrements.
X To adjust the set speed in 10 km/h
increments: briefly press the cruise con-
tro llever up :or down ;beyond the
pressure point.
The last stored speed increases or decrea-
ses in 10 km/ hincrements. i
DISTRONIC PLUS is not deactivated if you
depress the accelerator pedal. If you accel-
erate to overtake, DISTRONIC PLUS
adjusts the vehicle's speed to the last
speed stored after you have finished over-
taking.
Storing the current speed or calling up
the stored speed G
WARNING
Only call up astored speed if you know what
that speed is and if it is suitable for the current
traffic and drivin gsituation .You can other-
wise endanger yourself or other sbyuninten-
tionally triggering sudden acceleration or
braking. X
Briefly pull the cruise contro llever towards
you :.
X Remove your foot from the accelerator
pedal.
DISTRONIC PLUS is activated. The first
time it is activated, the curren tspeed is
stored. Otherwise, it sets the vehicle cruise
speed to the previously stored value. Driving systems
175Driving and parking Z

Obstructions and stationary vehicles
DISTRONIC PLUS does not brake for obsta-
cles or stationary vehicles. If, for example, the
detected vehicle turn sacorner and reveals
an obstacle or stationary vehicle, DISTRONIC
PLUS will not brake for these.
Crossing vehicles DISTRONIC PLUS may mistakenly detect
vehicles that are crossing your lane. Activat-
ing DISTRONIC PLUS at traffic lights with
crossing traffic, for example, could cause
your vehicle to pull away unintentionally. HOLD function
General notes The HOLD function can assist the driver in the
following situations:
R when pulling away ,especially on steep
slopes
R when manoeuvrin gonsteep slopes
R when waiting in traffic The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effec tiscancelled and the HOLD
function is deactivated when you depress the
accelerator pedal to pull away.
Activation conditions You can activate the HOLD function if:
R
the vehicle is stationary.
R the engine is running or it has been auto-
matically switched off by the ECO start/
stop function.
R the driver's door is closed or your seat belt
is fastened.
R the parking brake is released.
R the bonnet is closed.
R the transmission is in position D,Ror N.
R DISTRONIC PLUS is deactivated.
Activating the HOLD function G
WARNING
The vehicle's brakes are applied when the
HOLD function is activated. For this reason,
deactivate the HOLD function if the vehicle is
to be set in motion by other means (e.g. in a
car wash or by towing).
X Make sure that the activation conditions
are met.
X Depress the brake pedal.
X Quickly depress the brake pedal further
until ë appears in the multifunction dis-
play.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again. Driving systems
179Driving and parking Z