2012 MERCEDES-BENZ CLS COUPE radiator

Heating
see Climate control
High-pressure cleaners ....................302
Hill start assist .................................. 144
HOLD function Display message ............................ 245
Function/notes ............................. 179I
Ignitio nlock
see Key positions
Immobiliser .......................................... 70
In-car hotspot see Separate operating instructions
Indicator and warning lamps
Coolant .......................................... 267
DISTRONI CPLUS ........................... 269
Engine diagnostics .........................266
Fuel tank ........................................ 267
SPORT handling mode ...................264
Indicator lamps
Display message ............................ 238
see Warning and indicator lamps
Insectp rotection on the radiator ....297
Inspection see ASSYST PLUS
Instrument cluster
Overview .................................. 30, 209
Settings ......................................... 221
Warning and indicator
lamps ...................................... .32, 258
Instrument cluster lighting ..............222
Intelligen tLight System
Activating/deactivatin g................. 222
Display message ............................ 239
Overview ........................................ 115
Setting the dipped-bea mhead-
lamps for driving on the right/left .223
Interior lighting ................................. 118
Automatic control system ..............118
Delayeds witch-off (on-board
computer) ...................................... 224
Emergency lighting ........................119
Manual control ............................... 119
Overview ........................................ 118
Reading lamp ................................. 118Setting brightness for display/
switches (on-board computer)
.......222
Setting the ambient lighting
brightness (on-board computer) ....223
Setting the ambient lighting col-
our (on-board computer) ................ 223
Interior motio nsensor ........................ 72
ISOFIXc hild seat securing system ....56 J
Jack Storage location ............................ 311
Using ............................................. 338
Jump start (engine)
see Jump starting (engine)
Jump starting (engine) ......................319 K
Key Changing the battery .......................79
Checking the battery .......................79
Convenience closing feature ............89
Convenience opening feature ..........89
Display message ............................ 256
Door central locking/unlocking .......77
Emergency key element ................... 78
Important safety notes ....................76
Loss ................................................. 81
Modifying the programming .............78
Positions (ignition lock) .................141
Problem (malfunction) .....................81
Starting the engine ........................143
KEYLESS-GO
Convenience closing ........................89
Display message ............................ 257
Locking ............................................ 77
Start/Stop button .......................... 141
Starting the engine ........................143
Unlocking ......................................... 77
Keyp ositions
Key ................................................ 141
KEYLESS GO .................................. 141
Kickdown
Driving tips .................................... 151
Manual drive program ....................154
Kneebag ............................................... 4412
Index

Parking
............................................... 159
Important safety notes ..................159
Parking brake ................................ 160
Position of exterio rmirror, front-
passenger sid e............................... 106
Reversing camera ..........................190
see PARKTRONIC
Parking aid
Active Parking Assist .....................187
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 234
Notes/function .............................. 160
Warning lamp ................................. 266
Parking lamps
Display message ............................ 239
Switching on/off ........................... 113
PARKTRONIC
Deactivating/activating .................186
Driving system ............................... 185
Function/notes ............................. 185
Important safety notes ..................185
Problem (fault) ............................... 187
Sensor range ................................. 185
Warning displa y............................. 186
PASSENGE RAIRBAG OFF warning
lamp ...................................................... 54
Petrol .................................................. 360
Plastic trim (cleaning instructions) .306
Power windows see Side windows
PRE-SAFE ®
(preventive occupant
safety system) Display message ............................ 235
Operation ........................................ .48
PRE-SAFE ®
Brake
Activating/deactivating .................219
Display message ............................ 235
Function/notes ................................ 68
Warning lamp ................................. 269
Produc tinformation ............................ 21
Program selector button ..................151
Protection of the environment General notes .................................. 21
Pulling away (automatic transmis-
sion) .................................................... 143 Q
Qualifie dspecialis tworkshop ...........23 R
RAC ESTART (AMG vehicles) .............180
RACETIME R(on-board computer) ....228
Radar sensors Overview ........................................ 368
Radar sensor system
Activating/deactivating .................225
Display message ............................ 245
Radiator cover ................................... 297
Radio Selecting astation ......................... 215
see separate operating instructions
Rain closing feature (slidin gsun-
roof) ...................................................... 92
Readin glamp ..................................... 118
Rear compartment Setting the airv ents...................... 137
Rear-compartment seat bel tsta-
tus indicator ........................................ 51
Rear foglamp Display message ............................ 239
Switching on/off ........................... 112
Rear seat
Display message ............................ 255
Rear seat (foldin gthe backrest for-
wards/back) ...................................... 275
Rear Seat Entertainment System see Separate operating instructions
Rear-vie wmirror
Anti-dazzle mode (automatic) ........106
Dipping (manual) ........................... 105
Rear window blind ............................282
Rear window heating Problem (fault) ............................... 131
Switching on/off ........................... 131
Refuelling
Fuel gauge ............................... 30, 209
Important safety notes ..................156
Notes for AMG vehicles .................361
Refuelling proces s......................... 157
see Fuel Index
15

Reserv
efuel ................................... 267
Seat bel t........................................ 259
SRS ................................................ 266
Tyr ep ressure monitor ...................270
Warning triangle ................................ 310
Washer fluid Display message ............................ 256
Whee lboltt ightening torque ...........340
Whee lchock ...................................... 337
Wheels Changing/replacing .......................336
Changing awheel .......................... 336
Checking ........................................ 329
Cleaning ......................................... 303
Cleaning (warning) .........................337
Emergency spare wheel .................351
Fitting anew wheel ........................ 340
Fitting awheel ............................... 337
Important safety notes ..................328
Removing awheel .......................... 339
Storing ........................................... 337
Tightening torqu e........................... 340
Whee lsize/tyre size ...................... 341
Windowbag
Operation ........................................ .46
Windows
Cleaning ......................................... 304
see Side windows
Windscreen
Demisting ...................................... 130
Windscreen washe rfluid
see Windscreen washer system
Windscreen washer system
Notes ............................................. 366
Topping up ..................................... 299
Windscreen wipers
Problem (malfunction) ...................122
Replacing the wiper blades ............121
Switching on/off ........................... 121
Winte roperation
Important safety notes ..................330
Radiator cover ............................... 297
Slippery road surfaces ...................165
Snow chains .................................. 331
Winte rtyres
Limiting the spee d(on-board com-
puter) ............................................. 224
M+S tyres ...................................... 330Wiper blades
Cleaning ......................................... 304
Important safety notes ..................121
Replacing ....................................... 121
Wooden trim (cleaning instruc-
tions) .................................................. 306
Workshop see Qualified specialist workshop 20
Index

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

Activ
eBlind Spo tAssist monitors the area up
to 3.0 mbehind your vehicle and directly next
to your vehicle, as shown in the diagram. For
this purpose, Active Blind Spot Assist uses
radar sensors in the rear bumper.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may
be the case if there are vehicles at the inner
edge of your lane.
Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similars olid
lane borders.
R warnings may be interrupted when driving
alongside long vehicles, for example lor-
ries, for aprolonged time.
The Active Blind Spot Assist radar sensors are
integrated into the front and rear bumpers
and behind acover in the radiator grille. Make
sure that the bumpers and the cover in the
radiator grille are free of dirt, ice or slush. The
rear sensors must not be covered, e.g. by
bicycle racks or overhanging loads. Following
as evere impact or in the event of damage to
the bumpers, have the function of the radar
sensors checked at aqualified specialist
workshop. Active Blind Spot Assist may oth-
erwise no longer work properly. Indicator and warning display G
WARNING
Active Blind Spot Assist is not active at speeds
below 30 km/h. The indicator lamps in the
exterior mirrors are yellow .Vehicles in the
monitoring range are then not indicated.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time and cause an acci-
dent and injure yourself and others. :
Yellow indicator lamp/red warning lamp
If Active Blind Spot Assist is switched on,
indicator lamps :in the exterior mirror slight
up yellow up to aspeed of 30 km/h. At
speeds above 30 km/h, the indicator lamp
goes out and Active Blind Spot Assist is
operational.
If av ehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the corre-
spondin gside lights up red. This warning
alway soccurs when avehicle enters the blind
spot monitoring range from behind or from
the side. When you overtake avehicle, the
warning only occurs if the difference in speed
is less than 12 km/h.
The yellow indicator lamp goes out if reverse
gear is engaged. Active Blind Spot Assist is
then no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light. 202
Driving systemsDriving and parking

Display messages Possible causes/consequences and
M Solutions
PRE-SAFE
inoperative See
Owner'
sManual Importan
tfunction sofPRE-SAFE ®
have failed .All other occupant
safet ysystems, e.g. airbags, remain available.
X Visit aqualified specialist workshop immediately. PRE-SAFE
Function
scur‐ rently limited See
Owner's Manual PRE-SAFE
®
Brake is temporarily inoperative. Possible causes:
R the function is impaired due to heavy rain or snow.
R the sensors in the radiator trim and in the bumper sare dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tion soro ther sources of electromagnetic radiation.
R AMG vehicles: ESP ®
is deactivated.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
Onc ethe causes listed above no longer apply, the display message
goes out.
PRE-SAFE ®
Brake is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible ,paying
attention to road and traffic conditions.
X Secure the vehicle against rollin gaway (Y page 159).
X Clean the sensors in the radiator trim and in the bumpers
(Y page 304).
X Restar tthe engine.
X AMG vehicles: reactivate ESP ®
(Y page 66). PRE-SAFE
Functions cur‐
rently limited See
Owner's Manual PRE-SAFE
®
Brake is inoperative due to afault. BAS PLUS or the
distance warning signal may also have failed.
X Visit aqualified specialist workshop. ü If the symbol appears in the multifunction display,
aseat belt
tongue has been inserted intoar ear seat belt buckle.
For further information on the status indicator for the rear seat
belts: (Y page 51). Display messages
235On-boardcomputer and displays Z

Display messages Possible causes/consequences and
M Solutions
?
Coolan
tStopv ehi‐ cle Switch engine
off The coolan
tistoo hot.
Aw arning tone also sounds.
G WARNING
Never driv ewithano verheate dengine. Drivin gwhen your engine
is overheate dcan caus esom efluids which may have leaked into
the engine compartmen ttocatch fire.
Steam fro manoverheated engine can caus eserious burns, which
can occur just by opening the bonnet.
This pose sarisk of injury.
X Stop the vehicl eimmediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Secure the vehicl eagainst rolling away (Y page159).
X Leave the vehicl eand keep asafe distance from the vehicl euntil
the engine has coole ddown.
X Make sure that the air supply to the engine radiator is not
blocked ,e.g. by frozen slush.
X Do not start the engine again until the display message goes out
and the coolant temperature is under 120 †. The engine may
otherwise be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visi taqualified specialist
workshop immediately.
The reading may rise up to 120 †undernormal driving conditions
if the coolant has been filled correctly. Display messages
241On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
Park Assist inoper‐
ative You hav
ejustc arrie doutalarg enumber of turning or parking
manoeuvres.
Active Parking Assis twill become available again after approx-
imately ten minutes (Y page 187).
X Pull over and stop the vehicle safely as soon as possible ,paying
attention to road and traffic conditions.
X Switch off and restart the engine.
If the display message continues to be displayed:
X Visit aqualified specialist workshop. PARKTRONIC is faulty.
X
Visit aqualified specialist workshop. Parking Guidance
finished The vehicle is parked.
Awarning tone also sounds.
The display message disappears automatically. DISTRONIC PLU
Soff DISTRONI
CPLUSh as been deactivate d(Ypage 170).
If it was deactivate dautomatically, awarning tone also sounds. DISTRONIC PLUS
available again DISTRONI
CPLUSiso perational againa fter having been tempo-
rarily unavailable. You can now reactivate DISTRONI CPLUS
(Y page 170). DISTRONIC PLUS cur‐
rently unavailable
See Owner's Manual DISTRONIC PLUS is temporarily inoperative. Possible causes:
R
the function is impaired due to heavy rain or snow.
R the sensor sinthe radiator trim and in the bumpers are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tion soro ther sources of electromagnetic radiation.
R the system is outside the operatin gtemperature range.
R the on-board voltage is too low.
Aw arning tone also sounds.
Once th ecauses listed abov enolonger apply,t he display message
goes out.
DISTRONIC is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 159).
X Clean the sensors in the radiator trim and in the bumpers
(Y page 304).
X Restart the engine. 248
Display messagesOn-board computer and displays