coolant temperature MERCEDES-BENZ R-CLASS FAMILY TOURER 2013 Owners Manual

On-board computer
Additional functions menu .............211
AIRMATIC/compass menu ............205
Audi omenu ................................... 204
Convenience submenu ..................210
Displaying a service message ........288
Displaying the coolant
temperature ................................... 203
Displaying the outside
temperature ................................... 203
Display messages ..........................214
DISTRONI Cmenu .......................... 180
Factory settings ............................. 206
Important safety notes ..................200
Menu overview .............................. 202
Message memory menu ................. 214
Navigation menu ............................ 205
Operation ....................................... 201
Selecting the language ..................207
Settings menu ............................... 206
Standard display. ........................... 203
Status bar ...................................... 207
Telephone menu ............................ 212
Trip computer menu ......................211
Video DVD operation. ....................205
Opening and closing the side trim
panels ................................................. 129
Operating system see On-board computer
Outside temperature
Calling up (on-board computer) .....203
Outside temperature display ...........201
Overhead control panel ......................36
Override feature Rea rside windows ........................... 67 P
Pain tcode number ............................ 349
Paintwork (cleaning instructions) ...291
Panic alarm .......................................... 40
Panorama roof with power tilt/
sliding panel
Opening/closing .............................. 95
Opening/closing the roller
sunblind ........................................... 96
Problem (malfunction) .....................97
Resetting ......................................... 96Panorama sliding sunroof
Important safety notes ....................93
Parking ............................................... 166
Important safety notes ..................166
Parking brake ................................ 167
Position of exterior mirror, front-
passenger side ............................... 116
Rea rview camera .......................... 189
see PARKTRONIC
Parking aid
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 217
Notes/function .............................. 167
Warning lamp ................................. 244
Parking lamps (changing bulbs) ......128
PARKTRONIC Deactivating/activating .................188
Driving system ............................... 186
Function/notes ............................. 186
Important safety notes ..................186
Problem (malfunction) ...................189
Range of the sensors .....................186
Trailer towing ................................. 188
Warning displa y............................. 187
PASSENGE RAIR BAG OFF indicator
lamp ...................................................... 46
Plastic trim (cleaning instructions) .294
Power washers .................................. 291
Power windows see Side windows
PRE-SAFE ®
(anticipatory occupant
protection) Display message ............................ 218
Operation ........................................ .52
Product information ............................21
Program selector button ..................157
Pulling away (automatic
transmission) ..................................... 151 Q
Qualifie dspecialis tworkshop ...........24 Index
13

Locating
astolen vehicl e............... 277
MB info call button ........................274
Roadside Assistance button ..........274
Search &Send ............................... 276
Self-test ......................................... 272
System .......................................... 272
Vehicle remote unlocking ..............276
Telephone
Accepting acall............................. 213
Display message ............................ 236
Menu (on-board computer) ............212
Number from the phone book ....... .213
Redialing ........................................ 213
Rejecting/ending acall................. 213
Temperature
Coolant (on-board computer) ......... 203
Displaying the outside
temperature ................................... 203
Outside temperature ..................... .201
Setting (climate control) ................140
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........72
Immobilize r...................................... 72
Tire pressure
Calling up (on-board computer) .....320
Checking manually ........................319
Display message ............................ 231
Maximum ....................................... 318
Notes ............................................. 317
Recommended ............................... 316
Tire pressure loss warning system
Important safety notes ..................319
Restarting ...................................... 320
Tire pressure monitor
Checking the tire pressure
electronically ................................. 322
Warning message .......................... 322
Tire pressure monitoring system
Function/notes ............................. 320
Restarting ...................................... 322
Warning lamp ................................. 247
Tires
Aspect ratio (definition) .................333
Average weight of the vehicle
occupants (definition) ....................332
Bar (definition) ............................... 331
Changing awheel .......................... 334
Characteristics .............................. 331Checking ........................................ 313
Definition of terms
.........................331
Directio nofrotation ...................... 334
Display message ............................ 231
Distributio nofthe vehicle
occupants (definition) ....................334
DOT, Tire Identification Number
(TIN) .............................................. .331
DOT (Department of
Transportation) (definition) ............332
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 332
GTW (Gross Trailer Weight)
(definition) ..................................... 332
GVW (Gross Vehicle Weight)
(definition) ..................................... 332
GVWR (Gross Vehicle Weight
Rating) (definition) .........................332
Important safety notes ..................312
Increased vehicle weight due to
optional equipment (definition) ......332
Kilopascal (kPa) (definition) ...........332
Labeling (overview )........................ 328
Load bearing index (definition) ......333
Load index ..................................... 330
Load index (definition) ...................333
M+S tires ....................................... 314
Maximum loaded vehicle weight
(definition) ..................................... 332
Maximum load on a tire
(definition) ..................................... 333
Maximum permissible tire
pressure (definition) ....................... 333
Maximum tire load. ........................330
Maximum tire load (definition) .......333
MOExtended tires ..........................314
Optional equipment weight
(definition) ..................................... 333
PSI (pounds per square inch)
(definition) ..................................... 333
Replacing ....................................... 334
Service life ..................................... 314
Sidewall (definition) .......................333
Speed rating (definition) ................332
Storing ........................................... 335
Structure and characteristics
(definition) ..................................... 331
Temperature .................................. 327 Index
17

Switching the rear-compartment
climate control on/off using the front
control panel
Climate control
X
Turn the SmartKey to position 2in the
ignition lock.
X To switch on/off: press the^button.
The indicator lamp in the ^button lights
up or goes out.
X To activate/deactivate: press the±
button.
The indicator lamp in the ±button lights
up or goes out.
3-zone automatic climate control
USA only:
X Turn the SmartKey to position 2in the
ignition lock.
X To activate/deactivate: press the±
button .
The indicator lamp in the ±button lights
up or goes out.
3-zone automatic climate control
Canada only:
X Turn the SmartKey to position 2in the
ignition lock.
X To switch on: press theYbutton.
ON and
MODE appear in the 3-zone
automatic climate control display behind
the Y symbol. The MODE display goes
out after three seconds. The display
switches back to the standard display.
X To switch off: press theYbutton.
MODE appears in the display behind the
Y symbol.
X Press the ^button.
OFF appears in the display behind the
Y symbol. Switching the rear-compartment
climate control on/off using the rear
control panel 3-zone automatic climate control
X
Turn the SmartKey to position 2in the
ignition lock.
X Switch on automatic climate control using
the front control panel.
X To switch on: press theÃbutton.
The indicator lamp in the Ãbutton lights
up.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up. Activating/deactivating cooling with
air dehumidification
Points to observe before use G
WARNING
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. This may prevent you from
observing the traffic conditions, thereby
causing an accident.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a
malfunction.
i The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer. 138
Operating the climate control systemsClimate control

Problems with the rear window
defroster
If the indicator lamp in the
ªrear window
defroster button flashes, the on-board
voltage is too low or the roof is open. The rear
window defroster has deactivated
prematurely or cannot be activated.
X Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically. Activating/deactivating air-
recirculation mode
G
WARNING
At low outside temperatures, only switch over
to air-recirculation mode for brief periods.
Otherwise, the windows could fog up, thus
impairing visibility and endangering yourself
and others. This may prevent you from
observing the traffic conditions and thereby
cause an accident.
You can deactivate the flow of fresh air if
unpleasant odors are enteringt he vehicle
from outside. The air already inside the
vehicle will then be recirculated.
The operation of air-recirculation mode is the
same for all control panels.
X Turn the SmartKey to position 2in the
ignition lock.
X To activate: press thedbutton.
The indicator lamp in the dbutton lights
up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. When air-
recirculation mode is activated
automatically, the indicator lamp in the
d button is not lit. Outside air is added after about
30 minutes.
X To deactivate: press thedbutton.
The indicator lamp in the dbutton goes
out.
i Air-recirculation mode is not deactivated
automatically at outside temperatures
above 26 †. Outside air is added after
about 30 minutes. 10
Air-recirculation mode is not deactivated
automatically at outside temperatures
above 79 ‡(26 †). Outside airi s added
after about 30 minutes. 11 Activating/deactivating the residual
heat function
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.
X To activate: press theÁbutton.
The indicator lamp in the Ábutton lights
up.
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.
X To deactivate: press theÁbutton.
The indicator lamp in the Ábutton goes
out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low
10 Vehicles with 3-zone automatic climate control.
11 Vehicles with 3-zone automatic climate control. Operating the climate control systems
143Climate control Z

Problems with the engine
Problem Possible causes/consequences and
M Solutions
The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Before attempting to start the engine again, turn the SmartKey
in the ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrumen tcluster go
out.
X Try to start the engine again (Y page 150). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X Consult a qualified 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.
X
Jump-star tthe vehicle (Y page 304).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. Vehicles with a
gasoline engine:
The engine is not
running smoothly and
is misfiring. There is a malfunction in the engine electronics or in 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.
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.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 287). Observe the warning
notes as you do so and add coolant if necessary. Driving
153Driving and parking Z

R
Bea rinm ind that the handling will be less
stable when towing a trailer than when
driving without one .Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly, has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to side winds and
requires more careful steering.
R If possible, avoid abrupt braking. Depress
the brake pedal moderately at first, so that
the trailer can activate its own brakes .Then
increase the pressure on the brake pedal.
R If the automatic transmission continues to
shift back and forth between two gears
when driving up or downhill, restrict the
shift range. Select shift range 4, 3, 2,or1.
Al ower gear and lower speed reduce the
risk of engine failure.
R When driving downhill, shift to a lower gear
to utilize the engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases
dramatically while the air-conditioning
system is switched on, switch off the air-
conditioning system.
Coolant heat can additionally be dissipated
by opening the windows and by setting the
blower fan and the interior temperature to
maximum.
R When overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of your vehicle/trailer
combination, you will have to travel an
additional distance beyond the vehicle you
are overtaking before returning to the
previous lane. Decoupling
atrailer G
WARNING
Vehicles with level control:
The vehicle is lowered as soon as you
disconnect the trailer cable. This could result
in your limbs or those of other people thata re
between the vehicle body and tires or
underneath the vehicle being trapped. There
is a risk of injury.
Make sure that nobody is in the immediate
vicinity of the wheel housings or under the
vehicle when you disconnect the trailer cable.
X Make sure that the automatic transmission
is set to position P.
X Apply the vehicle's parking brake.
X Start the engine.
X Close all doors and the tailgate.
X Apply the trailer's parking brake.
X Remove the trailer cable and decouple the
trailer.
X Switch off the engine. Permissible trailer loads and drawbar
loads
Weight specifications Permissible gross vehicle weight rating
The gross trailer weight is calculated by
adding the weight of the trailer to the weight
of the load and equipment on the trailer.
Maximu
mpermissible gross vehicle weight:
3,500 lbs (1,588 kg).
Permissible noseweight
The maximum permissible trailer drawbar
noseweight is the maximum weight with
which the trailer drawbar can be loaded:
350 lbs (158 kg).
Limit for Mercedes-Benz-approved trailer
couplings. 196
Towing
atrailerDriving an d parking

Standard display menu
Standard display Standard display
:
Trip odometer
; Odometer
X Press the VorU button on the
steering wheel to select the standard
display.
X To reset the trip odometer: press and
hold the .reset button in the instrument
cluster until the trip odometer is reset.
You can select the following functions in the
Standard display menu using the&or
* button:
R Tire pressure loss warning (Y page 319)
(Canada only)
R Tire pressure monitor (Y page 320) (USA
only)
R Coolant temperature (Y page 203)
R Digital speedometer or outside
temperature (Y page 203)
R ASSYST PLUS service interval display
(Y page 288)
R Engine oil level (Y page 285)
Displaying the coolant temperature G
WARNING
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.
! If the coolant temperature is over 248 ‡
(120 †), do not continue driving. The
engine will otherwise be damaged. X
Press the VorU button on the
steering wheel to select the standard
display.
X Press the &or* button to select the
coolant temperature.
Under normal driving conditions, with the
correcta nti-corrosiona nd antifreeze additive
concentration, the reading may rise to
248 ‡(120 †) .
Displaying the digital speedomete ror
outside temperature Digital speedometer
Outside temperature
If you have selected the digital speedometer
for the status bar (Y
page 207), the outside
temperature is displayed here. Menus and submenus
203On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
b
Daytime Running
Light
Left orDaytime
Running Light Right The left-hand or right-hand daytime running lamp is faulty.
X
Chec kwhether you are permitted to replace the bulb yourself
(Y page 126).
or
X Visit a qualified specialist workshop. b
AUTO Light
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop.
USA only:
X Switch off the daytime running lamps in the on-board computer
(Y page 207).
X Switch the lights on and off using the light switch. b
Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to $orÃ.
or
X If the rear fog lamp is switched on: press the light switch in to
the stop. Engine
Display messages Possible causes/consequences and
M Solutions
+
Top
Up Coolant See
Operator's Manual The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 287).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. ? The fan motor is faulty.
X
At coolant temperatures under 248 ‡(120 †), drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. 224
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
M Solutions
?
Coolant Stop car,
switch engine off The coolan
tis too hot.
Aw arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan cause some
fluids which may have leaked into the engine compartmen tto
catch fire.
Stea mfrom the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is under 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). Display messages
225On-board computer and displays Z

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 Read the information on qualified
specialist workshops: (Y page 24).Engine compartment
Hood
Opening the hood G
WARNING
Do not pull the release lever while the vehicle
is in motion. Otherwise, the hood could be
forced open by passing air flow.
This could cause the hood to come loose and
injure you and/oro thers.G
WARNING
Do not open the hood when the engine is
overheated. You could be seriously injured.
Observe the coolant temperature display to
determine whether the engine may be
overheated. If you see flames or smoke
coming from the engine compartment, move
away fro mthe vehicle. Wait until the engine
has cooled. If necessary, call the fire
department. G
WARNING
There is a risk of injury if the hood is open,
even if the engine is not running.
Some engine components can become very
hot.
To avoid the risk of burns, only touch those
components described in the Operator's
Manual and observe the relevant safety notes. G
WARNING
To avoid injury, stay clear of moving parts
when the hood is open and the engine is
running.
The radiator fan may continue to run for
approximately 30seconds or may even restart
after the engine has been switched off. For
this reason, you must not reach into the fan
rotation area. G
WARNING
Vehicles with gasoline engine:
The engine is equipped with a transistorized
ignition system. Because of the high voltage
it is dangerous to touch any components
(ignition coils, spark plug sockets, diagnostic
socket) of the ignition system
R with the engine running
R while starting the engine
R when the ignition is switched on and the
engine is turned manually G
WARNING
Vehicles with diesel engine:
The engine is equipped with a high-voltage
electronic control unit for the injection
system. Because of the high voltage it is
dangerous to touch any components of the
injection system (injectors, electrical wires)
R with the engine running
R while starting the engine
R when the ignition is switched on G
WARNING
The windshield wipers and wiper linkage
could be set in motion.
When the hood is open, you or others could
be injured by the wiper linkage.
Make sure that the windshield wipers are
switched off. Remove the SmartKey or make
sure that no ignition position has been
selected with KEYLESS-GO. All indicator
lamps must be off in the instrument panel. 284
Engine compartmentMaintenance and care