2010 MERCEDES-BENZ CLS COUPE stop start

Problem Possible causes/consequences and
M Solutions
Vehicles with a petrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop, e.g. a Mercedes-Benz Service Centre.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. 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 268). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct, the radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X At coolant temperatures under 120 †, drive on to the nearest
qualified specialist workshop e.g. to a Mercedes-Benz Service
Centre.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. Automatic transmission
Important safety notes
G
Risk of accident
The movement of the pedals must not be
impaired in any way. Do not keep any objects
in the driver's footwell. Make sure that floor-
mats or carpets are correctly secured and
that there is sufficient clearance for the ped-
als.
Do not place several floormats on top of one
another. G
Risk of accident
Do not change down for additional engine
braking on a slippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid. This could cause you to lose control of your vehicle and cause an
accident. Automatic transmission
135Driving and parking Z

Engaging reverse gear R
!
Only shif tthe automatic transmission to
R when the vehicle is stationary.
X Push the DIRECT SELECT lever up past the
first point of resistance.
Neutral N with ECO start/stop function
activated The ECO start/stop function switches the
engine off automatically if the vehicle is
braked to a standstill when in neutral Nand
the brake is still depressed.
For further information on the ECO start/stop
function: (Y page 131).
Shifting to neutral N X
Push the DIRECT SELECT lever up or down
to the first point of resistance.
Transmission position D with ECO
start/stop function activated The ECO start/stop function switches the
engine off automatically if the vehicle is
braked to a standstill when in transmission
position Dand the brake is still depressed.
For further information on the ECO start/stop
function (Y page 131).
Shifting to transmission position D X
Push the DIRECT SELECT lever down past
the first point of resistance. Transmission position display
The current transmission position is shown in
the multifunction display. :
Transmission position
i The arrows in the transmission position
display show how and into which transmis-
sion positions you can change using the
DIRECT SELECT lever.
! 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 trans-
mission position Dand drive program Eor
S. Do not restrict the shift range. Transmission positions
B
Park position
Prevents the vehicle from rolling
away when stopped. Do not shift
the transmission into position
P (Y page 147) 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. Automatic transmission
137Driving and parking Z

A
Neutral
Do not shift the transmission to
N
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
If ESP ®
is deactivated or faulty:
only shift the transmission to posi-
tion Nif the vehicle is in dange rof
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 gears
The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position D.This automatic gearshift-
ing behaviouri s determined by:
R a shift range restriction, if selected
R the selected drive program (Y page 138)
R the position of the accelerator pedal
R the road speed Driving tips
Accelerator pedal position Your style of driving influences how the auto-
matic transmission shifts gear:
R little throttle: early upshifts
R more throttle: late upshifts AMG vehicles When shifting down, the double-clutch func-
tion is active regardless of the currently selec-
ted drive program. The double-clutch function
reduces load change reactions and is condu-
cive to a sporty driving style. The sound gen-
erated by the double-clutch function depends
on the drive program selected.
Kickdown
Use kickdown for maximum acceleration.
X
Depress the accelerator pedal beyond the
pressure point.
The transmission shifts to a lower gear
depending on the engine speed.
X Ease off the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts back up. Program selector button
General notes The program selector button allows you to
choose between different driving character-
istics.
Program selector button (example)
E
Economy Comfortable, economical
driving
S
Sport Sporty driving style
M
Manual Manual gearshifting138
Automatic transmissionDriving and parking

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 a qualified specialist work-
shop, e.g. a Mercedes-Benz Service Centre, 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 the vehicle.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least 10 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 a qualified specialist work-
shop, e.g. a Mercedes-Benz Service Centre, immediately. Refuelling
Important safety notes
G
Risk of explosion
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
Risk of injury
Do not come into 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
Risk of fire
Do not use petrol to refuel vehicles with a die-
sel engine. Do not mix diesel with petrol. This
would result in damage to the fuel system and
engine, which could lead to a vehicle fire.
! Do not use petrol to refuel vehicles with a
diesel engine. Do not use diesel to refuel vehicles with a petrol engine. Even a small
quantity of the wrong fuel will damage the
fuel system and 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
a qualified specialist workshop and have
the fuel tank and fuel lines drained com-
pletely. Petrol (EN 228)
Fuel grade !
Only refuel using unleaded premium-
grade petrol with at least
95 RON/85 MON, which conforms to Euro-
pean standard EN 228 or an equivalent
specification.
! Do not use the following:
R E85 (petrol with 85 % ethanol)
R E100 (100 % ethanol)
R M15 (petrol with 15 % methanol) 142
RefuellingDriving and parking

Switching off the engine
Important safety notes G
Risk of accident
If the engine is not running, there is no power
assistance for the steering and brakes. Steer-
ing and braking then requires significantly
greater effort.
As a result, you might lose control of the vehi-
cle, cause an accident and injure yourself and
others.
Therefore, do not switch off the engine while
you are driving.
Vehicles with automatic transmission X
Apply the parking brake firmly.
X Standard vehicles: shift the transmission
to P. Selector lever in AMG vehicles with P button
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, the automatic
transmission shifts to Nautomatically.
If you then open the driver's door or the
front-passenger door or remove the key
from the ignition, the automatic transmis-
sion shifts to P. If you shift the automatic transmission to
N
before switching off the engine, the auto-
matic transmission remains in Neven when
a door is opened.
Using KEYLESS-GO
X Press the Start/Stop button (Y page 129).
The engine stops and all the indicator
lamps in the instrumen tcluste rgo 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, "key removed".
i If you use the Start/Stop button to switch
off the engine, the automatic transmission
shifts to Nautomatically. If you then open
the driver's or front-passenger door, the
automatic transmission 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 three seconds.
This function operates independently from
the ECO start/stop automatic engine
switch-off function. Parking brake148
ParkingDriving and parking

Heavy and light loads
G
Risk of accident
Never depress the brake peda lcontinuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately, but
drive on for a short while. This allows the air-
flow to cool the brakes more quickly.
If the brakes have been used only moderately,
you should occasionally test their effective-
ness. To do this, brake more firmly from a
higher speed. This improves the grip of the
brakes.
Wet road surface If driving in heavy rain for a prolonged period
of time without braking, there may be a
delayed reaction from the brakes when brak-
ing for the first time. This may also occur after
the vehicle has been washed.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehi-
cle washed, brake firmly while paying atten-
tion to the traffic conditions. This will warm
up the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
Limited braking performance on salt
treated roads G
Risk of accident
The layer of salt on the brake discs and the
brake pads/linings may cause a delay in the
braking effect, resulting in a significantly lon-
ger braking distance, which could lead to an
accident.
To avoid this danger, you should: R
occasionally brake carefully, without put-
ting other road users at risk, when you are
driving on salted roads. This helps to
remove any salt that may have started to
build up on the brake discs and the brake
pads/linings.
R maintain a greater distance to the vehicle
ahead and drive with particular care.
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new trip, so that salt residues are removed
from the brake discs.
New brake pads/linings G
Risk of accident
New brake pads/linings only reach their opti-
mum braking effect after several hundred kil-
ometres of driving. Before this optimum brak-
ing effect is reached, you should compensate
for the reduced braking effect by applying
greater pressure when braking. This also
applies after the brake discs or the brake
pads/linings have been replaced.
For safety reasons, Mercedes-Benz recom-
mends that you only have brake pads/linings
fitted to your vehicle which have been
approved for Mercedes-Benz vehicles or
which correspond to an equivalent quality
standard. Brake pads/linings which have not
been approved for Mercedes-Benz vehicles or
which are not of an equivalent quality could
affect your vehicle's operating safety.
High-performance brake system for
AMG vehicles 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 temper-
ature and humidity
The wear of individual components of the
brake system, such as the brake pads/linings 150
Driving tipsDriving and parking

not accelerate. This is based on the current
map data in the navigation system.
Roundabou
t(example)
The curren tspeed is maintained:
R approximately 10 seconds before the
roundabout/T junction and for approx-
imately 1.5 seconds when driving on the
roundabout
R approximately 12 seconds before reaching
a motorway exit and approximately 4sec-
onds after the motorway exit
Afterwards, the vehicle accelerates back to
the set speed you specified.
Stopping G
Risk of accident
Never get out of the vehicle when DISTRONIC
PLUS is activated.
DISTRONIC PLUS must also never be oper-
ated, activated or deactivated by a passenger
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 a malfunction in the system or an
interruption in the power supply, e.g. bat-
tery failure. R
the electrical system in the engine com-
partment, the 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 detects that the vehicle
in fron tis 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 a standstill
at a sufficient distance behind the vehicle
in front.T he specified minimum distance is
set using the control on the cruise control
lever.
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 a system fault occurs.
R the power supply is not sufficient.
Setting aspeed X
Press the cruise control lever to the pres-
sure point, up :for a highe rspeed or
down Afor a lower speed.
X Keep the cruise control lever pressed until
the desired speed is reached.
X Release the cruise control lever.
The new speed is stored. DISTRONIC PLUS
is activated and adjusts the vehicle's speed
to the new speed stored. 158
Driving systemsDriving and parking

Shortly before the store
dspeed is reached, it
appears in the multifunction display.
Permanent SPEEDTRONIC remains active,
even if variable SPEEDTRONIC is deactivated.
You cannot exceed the stored limit speed,
even if you depress the accelerator pedal
beyond the pressure point (kickdown). 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 manoeuvring on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effec tis cancelled and the HOLD
function 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 not applied.
R the bonnet is closed.
R the transmission is in position D,Ror N.
R DISTRONIC PLUS is deactivated.
Activating the HOLD function X
Make sure that the activation conditions
are met.
X Depress the brake pedal. X
Quickly depress the brake pedal further
until HOLD display
:appears in the multi-
function display.
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. G
Risk of accident
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).
Deactivating the HOLD function The HOLD function is deactivated automati-
cally if:
R
you accelerate and the transmission is in
position Dor R.
R the transmission is in position P.
R you apply the brakes againw ith a certain
amoun tofpressure until HOLD disappears
from the multifunction display.
R you activate DISTRONIC PLUS. G
Risk of accident
Never get out of the vehicle when the HOLD
function is activated.
The HOLD function must never be operated
or deactivated by a passenger or from outside
the vehicle.
The HOLD function does not replace the park-
ing brake and must not be used for parking. Driving systems
165Driving and parking
Z