coolant temperature MERCEDES-BENZ CLS-Class 2012 W218 Owner's Manual

Setting the temperature (rear
compartment) ................................ 124
Switching air-recirculation mode
on/off ............................................ 126
Switching on/off ........................... 122
Switching residual heat on/off ......127
Switching the rear window
heating on/off ............................... 126
Switching the ZONE function on/
off .................................................. 125
Cockpit
Overview .......................................... 26
see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 300
see Emergency spare wheel
COMAND
see separate operating instructions
Combination switch .......................... 108
Compass Calibrating ..................................... 278
Calling up ....................................... 277
Setting ........................................... 277
Consumption statistics (on-board
computer) .......................................... 201
Convenience closing feature .............. 87
Convenience opening feature ............ 87
Coolant (engine) Checking the level .........................282
Display message ............................ 226
Notes ............................................. 350
Temperature (on-board computer) . 213
Temperature gauge ........................ 196
Warning lamp ................................. 249
Cooling
see Climate control
Cornering light (display message) ... 224
Cornering light function Function/notes ............................. 109
Crash-responsive emergency
lighting ............................................... 111
Cruise control Cruise control lever .......................155
Deactivating ................................... 156
Display message ............................ 234
Driving system ............................... 155
Function/notes ............................. 155
Important safety notes ..................155LIM indicator lamp .........................155
Setting a speed .............................. 156
Storing and maintaining current
speed ............................................. 155
Cup holder
Center console .............................. 262
Important safety notes ..................261
Rear compartment .........................262
Customer Assistance Center (CAC) ... 23
Customer Relations Department ....... 23
D
Dashboard see Cockpit
Daytime running lamp mode
see Daytime running lamps
Daytime running lamps
Display message ............................ 225
Switching on/off (on-board
computer) ...................................... 209
Switching on/off (switch) ..............107
Delayed switch-off
Exterior lighting (on-board
computer) ...................................... 210
Interior lighting .............................. 210
Digital speedometer ......................... 201
DIRECT SELECT lever see Automatic transmission
Display (cleaning instructions) ........ 290
Display messages Calling up (on-board computer) .....216
Driving systems ............................. 229
Engine ............................................ 226
General notes ................................ 216
Hiding (on-board computer) ...........216
Key ................................................ 239
KEYLESS-GO .................................. 239
Lights ............................................. 224
Safety systems .............................. 217
Service interval display ..................284
Tires ............................................... 234
Vehicle ........................................... 237
Distance display (on-board
computer) .......................................... 206
Distance recorder ............................. 201
see Odometer
see Trip odometer
Index7

Supplement Restraint Systemsee SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 210
Suspension tuning AIRMATIC ...................................... 169
AMG adaptive sport suspension
system ........................................... 170
SETUP (on-board computer) ..........213
Switching air-recirculation mode
on/off ................................................. 126
Switching off the alarm (ATA) ............ 69
T
Tachometer ........................................ 197
Tail lamps Display message ............................ 225
see Lights
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 27
Technical data
CLS 550 4MATIC
BlueEFFICIENCY ............................ 351
CLS 550 BlueEFFICIENCY ..............351
CLS 63 AMG .................................. 352
Tires/wheels ................................. 339
TELEAID
Call priority .................................... 271
Display message ............................ 220
Downloading destinations
(COMAND) ..................................... 272
Emergency call .............................. 269
Important safety notes ..................267
Locating a stolen vehicle ...............273
MB info call button ........................271
Remote vehicle locking ..................273
Roadside Assistance button ..........270
Search & Send ............................... 272
Self-test ......................................... 268
System .......................................... 268
Vehicle remote unlocking ..............272
Telephone
Accepting a call ............................. 205
Menu (on-board computer) ............204
Number from the phone book ........ 205
Redialing ........................................ 205
Rejecting/ending a call .................205
Temperature
Coolant .......................................... 196
Coolant (on-board computer) ......... 213
Engine oil (on-board computer) ...... 213
Outside temperature ...................... 197
Setting (climate control) ................123
Theft deterrent locking system
Immobilizer ...................................... 69
Through-loading feature ................... 259
Tilt/sliding sunroof see Sliding sunroof
Timing (RACETIMER) ......................... 213
Tiredness assistant see ATTENTION ASSIST
Tire pressure
Calling up (on-board computer) .....322
Checking manually ........................321
Display message ............................ 234
Maximum ....................................... 320
Notes ............................................. 318
Pressure loss warning ....................321
Recommended ............................... 317
Tire pressure monitoring system
Function/notes ............................. 322
Restarting ...................................... 324
Warning lamp ................................. 252
Tires
Aspect ratio (definition) .................337
Average weight of the vehicle
occupants (definition) ....................335
Bar (definition) ............................... 335
Characteristics .............................. 335
Checking ........................................ 315
Definition of terms .........................335
Direction of rotation ......................338
Display message ............................ 234
Distribution of the vehicle
occupants (definition) ....................338
DOT, Tire Identification Number
(TIN) ............................................... 334
DOT (Department of
Transportation) (definition) ............335
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 336Index17

Instrument cluster
Displays
FunctionPage:Speedometer with
segments
197
;Multifunction display198=Tachometer197?Coolant temperature196AFuel gauge
i Adjust the instrument cluster lighting
using the on-board computer
( Y page 209).
Instrument cluster27At a glance

iThe cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Activating/deactivatingXTo activate: press the ¿ button.
The indicator lamp in the ¿ button lights
up.XTo switch off: press the ¿ button.
The indicator lamp in the ¿ button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature.
Problems with the cooling with air
dehumidification function
When you press the ¿ button, the
indicator lamp in the button flashes three
times or remains off. You can no longer switch
on the cooling with air dehumidification
function.
XConsult a qualified specialist workshop.
Setting climate control to automatic
GWARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
Automatic mode will achieve optimal
operation if cooling with air dehumidification
is also activated. If desired, cooling with air
dehumidification can be deactivated.
Adjusting the climate mode settings
(AIR FLOW)
This function is only available with automatic
climate control.
The climate control settings are especially
effective at high temperatures.
You can select the following climate control
settings in automatic mode:FOCUShigh airflow that is set slightly
coolerMEDIUMmedium airflow, standard settingDIFFUSElow airflow that is set slightly
warmer and with a lower rate of
airflowXTurn the SmartKey to position 2 in the
ignition lock.XPress the à button.XPress the ñ button repeatedly until the
desired climate mode appears in the
display.
Setting the temperature
Dual-zone automatic climate control
Different temperatures can be set for the
driver's and front-passenger sides.
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: turn controls : and
B clockwise or counter-clockwise
( Y page 119).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 † ).Operating the climate control system123Climate controlZ

XTurn the SmartKey to position 2 in the
ignition lock.XTo activate: press the g button.
The indicator lamp in the g button lights
up.
i In the event of high pollution levels 13
or at
high outside temperatures, air-
recirculation mode is automatically
activated. When air-recirculation mode is
activated automatically, the indicator lamp
in the g button is not lit.
Outside air is added after about 30
minutes.
XTo switch off: press the g button.
The indicator lamp in the g button goes
out.
i Air-recirculation mode deactivates
automatically:
R after approximately five minutes if
outside temperatures are less than about
41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes if outside
temperatures are over about
41 ‡ (5 †)
Activating/deactivating the residual
heat function
The residual heat function is only available in
vehicles for Canada with automatic climate
control.
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.XTurn the SmartKey to position 0 in the
ignition lock or remove it.XTo activate: press the Ì button.
The indicator lamp in the Ì button lights
up.XTo switch off: press the Ì button.
The indicator lamp in the Ì button goes
out.
i Residual heat is deactivated
automatically:
R after about 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low
Setting the air vents
Important safety notes
GWARNING
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.
13 Automatic climate control only.Setting the air vents127Climate controlZ

ProblemPossible causes/consequences and M SolutionsThe engine is not
running smoothly and
is misfiring.There is a malfunction in the engine electronics or a mechanical
component of the engine management system.XOnly depress the accelerator pedal slightly.XHave the cause rectified immediately at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz Center.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it.The coolant
temperature gauge
shows a value 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 ( Y page 282). Observe the warning
notes as you do so and add coolant if necessary.Automatic transmission
Important safety notes
GWARNING
It is dangerous to shift the automatic
transmission out of parking position P or
neutral position N if the engine speed is
higher than idle speed. If your foot is not firmly
on the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.
GWARNING
Keep in mind that turning off the engine alone
only will shift the automatic transmission into
neutral position N automatically.
Always shift the automatic transmission into
park position P before turning off the engine.
Otherwise the vehicle could roll away which
could result in an accident and/or serious
personal injury.
Selector lever
Overview of transmission positions
Selector lever in AMG vehicles with P button
PPark position with parking lockRReverse gearNNeutralDDriveAutomatic transmission139Driving and parkingZ

Useful information
i This 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 note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops ( Y page 22).
Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance" section
( Y page 27).
GWARNING
A driver's attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions permit
it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h ), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
GWARNING
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see
information about your driving conditions,
such as
R speed
R outside temperature
R warning/indicator lamps
Rmalfunction/warning messages
R failure of any systems
Driving characteristics may be impaired.
If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.GWARNING
Malfunction and warning messages are only
indicated for certain systems and are
intentionally not very detailed. The
malfunction and warning messages are
simply a reminder with respect to the
operation of certain systems. They do not
replace the owner's and/or driver's
responsibility to maintain the vehicle's
operating safety. Have all required
maintenance and safety checks performed on
the vehicle. Bring the vehicle to an authorized
Mercedes-Benz Center to address the
malfunction and warning messages.
Displays and operation
Coolant temperature display
GWARNING
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until
the engine has cooled down.
The coolant temperature gauge is in the
instrument cluster on the left-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †).
196Displays and operationOn-board computer and displays

! If the coolant temperature is too high a
display message is shown.
If the coolant temperature rises above
248 ‡(120 †), do not drive any further as
this could damage the engine.
Tachometer
The red band in the tachometer indicates the
engine's overrevving range.
! Do not drive in the overrevving range, as
this could damage the engine.
The fuel supply is interrupted to protect the
engine when the red band is reached.
Outside temperature display
The outside temperature display is in the
multifunction display ( Y page 198).
GWARNING
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
Changes in the outside temperature are
displayed after a short delay.
Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
Cruise control ( Y page 155) activated:
The segments light up from the stored speed
to the maximum speed.
DISTRONIC PLUS ( Y page 157) activated:
One or two segments in the set speed range
light up.
DISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the
vehicle in front and the stored speed light up.
Operating the on-board computer
Overview
The on-board computer is activated as soon
as you turn the SmartKey to position 1 in the
ignition lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.
:Multifunction display;Right control panel=To switch on the Voice Control System;
see the separate operating instructions?Back buttonALeft control panelDisplays and operation197On-board computer and displaysZ

XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the : or 9 button to select the
Factory Setting submenu.XPress the a button to confirm.
The Reset All Settings? message
appears.XPress the : or 9 button to select
No or Yes .XPress the a button to confirm the
selection.
If you select Yes, the multifunction display
shows a confirmation message.
AMG menu in AMG vehicles
AMG displays
XPress = or ; on the steering wheel
to select the AMG menu.:Digital speedometer;Gear indicator=Upshift indicator?Engine oil temperatureACoolant temperature
Upshift indicator UP = indicates that the
engine has reached the overrevving range
when in the manual gearshift program.
Upshift indicator UP = fades out other
messages until you have shifted up.
When the engine temperature is below
80 †, the oil temperature gauge flashes.
Avoid driving at full engine output during this
time.
SETUP
SETUP shows the drive program, the ESP ®
(Electronic Stability Program) mode and the
SPORT handling mode.
XPress = or ; on the steering wheel
to select the AMG menu.XPress the 9 button repeatedly until
SETUP is displayed.
or
XBriefly press the AMG button on the center
console.:Drive program (C/S/S+/M);ESP®
mode ( ON/OFF ) or SPORT handling
mode ( SPORT)3Suspension tuning ( COMFORT/SPORT /
SPORT+ )
RACETIMER
Displaying and starting RACETIMER
GWARNING
The RACETIMER feature is only for use on
roads and in conditions where high speed
driving is permitted. Racing on public roads is
prohibited under all circumstances. The driver
is and must always remain responsible for
following posted speed limits.
You can use the RACETIMER to store lap
times.
XPress = or ; on the steering wheel
to select the AMG menu.XPress the 9 button repeatedly until the
RACETIMER is shown.
i If the RACETIMER is selected, the =
and ; buttons are inoperative.
Menus and submenus213On-board computer and displaysZ

GWARNING
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged.
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored.
Display messagesPossible causes/consequences and M Solutions?
Coolant Level Low
Stop Vehicle Turn
Engine OffThe coolant is too hot.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.XWait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.XPay attention to the coolant temperature display.XIf the temperature increases again, visit a qualified specialist
workshop immediately.The poly-V-belt may have torn.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XOpen the hood.XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
XConsult a qualified specialist workshop.
If the poly-V-belt is OK:
XWait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.XPay attention to the coolant temperature display.XVisit a qualified specialist workshop.GWARNING
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
Display messages227On-board computer and displaysZ