coolant temperature SMART FORTWO 2016 Owners Manual

Controlling automatically ........... 81
Cooling with air dehumidifica-
tion ........................................ 81
Defrosting the windows ............... 82
Defrosting the windshield ........... 82
General notes ........................... 79
Notes on using the automatic
climate control ......................... 80
Overview of systems ................... 79
Problem with the rear window
defroster ................................. 84
Refrigerant ............................. 211
Setting the air distribution ........ 81
Setting the air vents .................. 84
Setting the airflow .................... 82
Setting the temperature .............. 81
Switching air-recirculation
mode on/off .............................. 84
Switching on/off ....................... 80
Switching the rear window
defroster on/off ........................ 82
Cockpit
Overview ................................. 22
Constant headlamp mode
see Daytime running lamps
Consumption statistics (on-board
computer) .................................... 112
Controlling speed
see Cruise control
Coolant
Battery cooling system .............. 153
Checking the level .................... 153
Drive system cooling system ....... 153
General notes .......................... 210
Important safety notes ............... 153
Setting the temperature unit ...... 116
Temperature display ................. 113
Topping up ............................. 153
Warning lamp .......................... 138
Coolant (engine)
Display message ....................... 125
Cooling
see Climate control
Copyright ..................................... 21
Cover (front)
see Service cover
Crosswind Assist ............................ 50 Cruise control
Activating .............................. 106
Buttons .................................. 106
Calling up the speed last stored .. 106
Canceling cruise control ........... 107
Deactivating ........................... 107
Display message (color display) .. 126
Driving systems ....................... 105
Function/notes ........................ 105
General notes .......................... 105
Important safety notes ............... 105
Increasing/decreasing the
speed ..................................... 106
Storing and maintaining cur-
rent speed .............................. 106
Cup holder
Center console ......................... 146
Center console in the rear com-
partment ................................ 146
Important safety notes ............... 146
Cup holder
see Cup holder
Customer Assistance Center (CAC) ...... 20
Customer Relations Department ......... 20
D
Dashboard
Additional instruments ............. 110
Dashboard
see Cockpit
Dashboard clock ............................ 110
Data
see Technical data
Daytime running lamps
Function/notes .......................... 67
Dealership
see Qualified specialist workshop
Declarations of conformity .............. 19
Diagnostics connection ................... 19
Digital speedometer
Display .................................. 109
Setting the display ................... 115
Display
Color ..................................... 111
Menu (on-board computer with a
color display) .......................... 115
Display (cleaning instructions) ....... 158
Index5

Information ............................ 204
Tires/wheels ........................... 200
Vehicle data ........................... 212
Temperature
Coolant .................................. 113
Outside temperature ................. 109
Setting (climate control) ............ 81
Setting the display units ...........1 16
Thorax/pelvisbag ........................... 35
Time
Setting ................................... 114
Setting (dashboard clock) ........... 110
Setting the time format (on-
board computer with a color
display) ................................. 114
Tire pressure
Checking manually .................... 183
Display message ....................... 126
Important safety notes ............... 183
Maximum ................................ 182
Not reached (TIREFIT) ................1 63
Notes .....................................1 81
Reached (TIREFIT) .................... 163
Recommended .......................... 180
Tire pressure monitor
Function/notes ........................ 183
General notes .......................... 183
Important safety notes ............... 183
Restarting (on-board computer
with color display) ...................1 85
Warning lamp .......................... 139
Warning message ......................1 84
TIREFIT kit ..................................1 61
Tires
Aspect ratio (definition) ...........1 95
Average weight of the vehicle
occupants (definition) .............. 194
Bar (definition) ....................... 194
Changing a wheel ..................... 196
Characteristics ....................... 194
Checking ................................ 178
Curb weight (definition) ........... 195
Definition of terms .................. 194
Direction of rotation ................ 197
Display message ....................... 126
Distribution of the vehicle
occupants (definition) .............. 196 DOT (Department of Transporta-
tion) (definition) ..................... 194
DOT, Tire
Identification Num-
ber (TIN) ................................ 193
GAWR (Gross Axle Weight Rating)
(definition) ............................ 195
General notes .......................... 200
GVW (Gross Vehicle Weight)
(definition) ............................ 195
GVWR (Gross Vehicle Weight Rat- ing) (definition) ...................... 195
Important safety notes ............... 177
Increased vehicle weight due to
optional equipment (defini-
tion) ...................................... 194
Kilopascal (kPa) (definition) ...... 195
Labeling (overview) .................. 191
Load bearing index (definition) .. 196
Load index .............................. 193
Load index (definition) .............1 95
M+S tires (winter tires) ............. 179
Maximum load on a tire (defini- tion) ...................................... 195
Maximum loaded vehicle weight
(definition) ............................ 195
Maximum permissible tire
pressure (definition) ................ 195
Maximum tire load .................... 193
Maximum tire load (definition) ... 195
Optional equipment weight
(definition) ............................ 196
PSI (pounds per square inch)
(definition) ............................ 195
Replacing ............................... 196
Service life ............................ 178
Sidewall (definition) ................ 196
Snow chains ............................. 179
Speed rating (definition) .......... 195
Storing .................................. 197
Structure and characteristics
(definition) ............................ 194
Summer tires in winter .............. 179
Temperature ............................ 190
TIN (Tire Identification Num-
ber) (definition) ...................... 196
Tire bead (definition) .............. 196
Tire pressure (definition) ......... 195
Tire pressures (recommended) .... 194
Index13

Warning and indicator lamps
FunctionPage
0043USA:00DF ABS134
Canada: 0025ABS134
004400E5ESP®134
008700EFBattery137
00850077Tire pressure monitor139
008300B3 Oil pressure138
00840052Power steering141
006B00B9Check Engine136
006C00AC Coolant temperature138
006D003DTurn signal, right68
006E003ETurn signal, left68
006FUSA:0027 Brakes132
Canada: 004DBrakes132
FunctionPage
0070005ERear fog lamp68
0071005AFog lamps68
00720057High-beam headlamps69
00730058 Low-beam headlamps68
00740075Restraint system29
00750060Parking lamps68
007600BADistance warning136
007700E9Seat belts131
0078\Doors or the tailgate141
Vehicle electronics141
24Instrument cluster
>> At a glance.

Problems with the engine
ProblemPossible causes/consequences and0050Solutions
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
XSwitch off the engine before attempting to start the engine
again (Ypage 101).
XTry to start the engine again (Ypage 87). 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:
XConsult 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.
XJump-start the vehicle (Ypage 168).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XAllow the starter motor to cool down for approximately two
minutes.
XTry to start the engine again.
If the engine still does not start:
XConsult a qualified specialist workshop.
The engine is not run-
ning smoothly and is
misfiring.There is a malfunction in the engine electronics or in a mechan-
ical component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
XHave the cause rectified immediately at a qualified specialist
workshop.
The coolant tempera-
ture exceeds 230 ‡
(110 †). The red coolant
temperature warning
lamp comes on while the
engine is running. A
warning tone also
sounds. The Stop
Switch Off Enginemessage appears.
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 (Ypage 153). Observe the warning notes
as you do so and add coolant if necessary.
90Driving
>> Driving and parking.

Depending on the vehicle equipment, you can
call up the following menus one after the
other:
RDistancemenu (Ypage 112)
Rfrom Starttrip computer menu
(Ypage 112)
Rfrom Resettrip computer menu
(Ypage 112)
RFuel consumptionmenu (Ypage 112)
RCoolant Temperaturemenu (Ypage 113)
RMessages and Servicemenu (Ypage 113)
RSettingsmenu (Ypage 114)
Odometer menu
Example: distance
XTo show: press the 0063or0064 button on
the steering wheel to select the trip meter display.
The display shows trip meter 0043and total
distance recorder 0044.
XTo reset the data:press the0076button on
the steering wheel.
XPress the 0063or0064 button to select yesand press the0076button to confirm.
The trip meter is reset.
You can change the unit for the trip meter in
the Display
submenu (Ypage 116).
Trip computer menu "From start" or
"From reset"
Example: trip computer "From start"
0043
Elapsed time
0044Distance
0087Average speed
0085Average fuel consumption
XTo display: press the0063or0064 button
on the steering wheel to select the from
Startorfrom Resettrip computer menu.
The data in the from Start
trip computer
menu refers to the start of the journey. The
data in the from Reset
trip computer sub-
menu refers to the last time the submenu was
reset.
The from Start
trip computer is automati-
cally reset when:
Rthe ignition has been switched off for more
than 4 hours.
R999 hours have been exceeded.
R9,999 miles have been exceeded.
The from Reset
trip computer is automati-
cally reset if the value exceeds 9,999 hours or 99,999 miles.
The unit of distance for the journey, speed
and consumption information can be changed
in the Display
submenu (Ypage 116).
Fuel consumption menu
Example: fuel consumption
112Menus and sub menus
>> On-board computer and displays.

XPress the0063or0064 button on the steer-
ing wheel to select the display of current
fuel consumption.
The display shows the fuel consumption over
the previous 15 minutes as a bar chart. The
display additionally shows the current fuel
consumption as a numeric value in the upper
right section of the display.
If you switch off the ignition, or change the
distance unit, the fuel consumption data is
deleted automatically.
You can change the distance unit in the Dis‐
playsubmenu (Ypage 116).
Coolant temperature menu
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 230‡(110 †).
Example: coolant temperature
XPress the 0063or0064 button on the steer-
ing wheel to select the coolant temperature
display.
The display shows the current coolant tem-
perature as a bar in the range between 50
and 110 †.
If the coolant temperature rises above
110 †, then the display shows a display
message (
Ypage 125). Observe the display
message. You could otherwise damage the
engine.
You can change the temperature unit in the
Display
submenu (Ypage 116).
Messages and service menu
Example: messages and service
If you have hidden display messages these are
saved in the message memory. The menu shows
the number of display messages in message
memory 0043and next service due date 0044
(
Ypage 153). The message memory can only be
called up when the ignition is switched on.
XPress the 0063or0064 button on the steer-
ing wheel to select the MessagesandSer‐vicemenu.
The display shows the number of display
messages in the message memory and the
next service due date.
If there are no display messages, then the
value in brackets is 0 and the information
on the 0076button is hidden.
XTo show display messages: press the0076
button on the steering wheel.
The lower area on the right of the display
shows the display message, its list number
and then number of display messages in the
message memory.
XPress 0063to scroll through the display
messages in the message memory.
Pressing 0064only allows you to scroll
back to messages which have already been
read.
If you scroll back from the first display
message using 0064, theMessages and
Servicemenu will again be shown in the
display. Existing display messages are not
shown.
Menus and sub menus113
>> On-board computer and displays.
Z

XTo leave the submenu:press the0063
or 0064 button to select the backfunction
and confirm with 0076.
The display shows the Display
submenu.
iIf you press and hold0063or0064, you
change directly to the backfunction.
Setting the unit of measurement for dis-
tance
If you change the unit of measurement for
distance, the values in the:
Rtrip computer "From start" or "From reset"
(Ypage 112)
RFuel consumption (Ypage 112)
menus are also reset automatically.
You can only set the unit of measurement for
distance when the vehicle is stationary.
XPress the 0063or0064 button on the steer-
ing wheel to select the Settingsmenu and
press 0076on the steering wheel to con-
firm.
XPress the 0063or0064 button to select the
Displaysubmenu and confirm with 0076.
XPress the0063or0064 button to select
Units of Distanceand press the 0076
button to confirm.
XPress the 0063or0064 button to select
Kilometersor Milesas the unit of meas-
urement for distance and press 0076to
confirm.
The display shows the Display
submenu.
The selected unit of measurement for dis-
tance applies as the basis for:
Rthe trip computer
Rthe service display
Rthe fuel consumption display
Rthe total distance recorder and the trip
meter display
Rthe cruise control speed display
Setting the temperature unit
You can switch the display of the outside tem-
perature and the coolant temperature between
† and ‡.
XPress the 0063or0064 button on the steer-
ing wheel to select the Settingsmenu andpress
0076on the steering wheel to con-
firm.
XPress the 0063or0064 button to select the
Displaysubmenu and confirm with 0076.
XPress the0063or0064 button to select
UnitsofTemperatureand press the 0076
button to confirm.
XPress the 0063or0064 button to select the
unit of temperature °Cor°Fand confirm
with 0076.
The display shows the Display
submenu.
Ambient lighting submenu
Introduction
In theAmbient Lightingsubmenu you have
the following options:
Rswitching the ambient lighting on/off
Rsetting the brightness of the ambient
lighting to different levels
XTo leave the submenu: press the0063
or 0064 button on the steering wheel to
select the back
function and press 0076on
the steering wheel to confirm.
The display shows the Settings
menu.
iIf you press and hold0063or0064, you
change directly to the backfunction.
Switching the ambient lighting on/off
XPress the0063or0064 button on the steer-
ing wheel to select the Settingsmenu and
press 0076on the steering wheel to con-
firm.
XPress the 0063or0064 button to select the
AmbientLightingsubmenu and confirm by
pressing the 0076button.
XPress the 0063or0064 button to select the
onfunction.
XActivate or deactivate the onfunction by
pressing the 0076button.
When the function is highlighted it is
activated and the ambient lighting is
switched on.
To set the brightness
You can set the brightness of the ambient
lighting to different levels.
XPress the 0063or0064 button on the steer-
ing wheel to select the Settingsmenu and
116Menus and sub menus
>> On-board computer and displays.

Display messagesPossible causes/consequences and0050Solutions
00AC
Stop Switch OffEngine
The coolant temperature has exceeded 230 ‡(110 †). The airflow to
the engine radiator may be blocked or the coolant level may be too
low.
GWARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to catch
fire.
Steam from an overheated engine can cause serious burns, which
can occur just by opening the engine compartment cover.
There is a risk of injury.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 100).
XLeave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
XCheck the coolant level and top up the coolant. Observe the notes
as you do so (Ypage 210).
XIf you need to add coolant more often than usual, have the engine coolant system checked.
XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
XDo not start the engine again until the coolant temperature is
below 230 ‡(110 †). Otherwise, the engine could be damaged.
Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
00B4
Low Fuel Level
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
00AC
Gas Cap Loose
The pressure in the fuel system has dropped. The fuel filler cap is
not closed correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
XClose the fuel filler cap.
If the fuel filler cap is correctly closed:
XVisit a qualified specialist workshop.
Display messages125
>> On-board computer and displays.
Z

ProblemPossible causes/consequences and0050Solutions
00B3
The red oil pressure
indicator lamp is lit
while the engine is
running. A warning
tone also sounds.The engine oil pressure is too low. There is a risk of engine dam-
age.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSwitch off the engine.
XSecure the vehicle against rolling away (Ypage 100).
XCheck the oil level (Ypage 150).
XIf necessary, add engine oil (Ypage 150).
Information on approved engine oils can also be obtained from any
qualified specialist workshop.
00AC
The red coolant tem-
perature warning lamp
comes on while the
engine is running. A
warning tone also
sounds.The coolant temperature has exceeded 230 ‡(110 †). The airflow to
the engine radiator may be blocked or the coolant level may be too
low.
GWARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to catch
fire.
Steam from an overheated engine can cause serious burns, which
can occur just by opening the engine compartment cover.
There is a risk of injury.
XPull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSwitch off the engine.
XSecure the vehicle against rolling away (Ypage 100).
XLeave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
XCheck the coolant level and top up the coolant. Observe the notes
as you do so (Ypage 210).
XIf you need to add coolant more often than usual, have the engine
coolant system checked.
XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
XDo not start the engine again until the coolant temperature is
below 230 ‡(110 †). Otherwise, the engine could be damaged.
Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
138Warning and indicator lamps in the instrument cluster
>> On-board computer and displays.

Engine oil viscosity
Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscos-
ity, this means that it is thick; a low viscos-
ity means that it is thin.
Select an engine oil with an SAE (viscosity)
classification suitable for the prevailing
outside temperatures. The table shows you
which SAE classifications are to be used. The
low-temperature properties of engine oils
can be significantly impaired during oper-
ation due to, for example, aging or soot and
fuel accretion. It is therefore strongly rec-
ommended that you carry out regular oil
changes using an approved engine oil with
the appropriate SAE classification.
Brake fluid
When handling brake fluid, observe the
important safety notes on service products
(
Ypage 207).
The brake fluid change intervals can be found
in the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz according to MB Approval 331.0.
Information about approved brake fluid can
be obtained at any qualified specialist work-
shop or on the Internet at
http://bevo.mercedes-benz.com.
iHave the brake fluid regularly replaced at
a qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Coolant
General notes
!Only add coolant that has been premixed
with the desired antifreeze protection.
You could otherwise damage the engine.
Further information on coolants can be
found in the Mercedes-Benz Specifications
for Service Products, MB BeVo 310.1, e.g. on
the Internet at
http://bevo.mercedes-benz.com. Or con-
tact a qualified specialist workshop.
!Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the engine cooling system is not sufficiently protected from corrosion and
overheating.
iHave the coolant regularly replaced at a
qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Comply with the important safety precautions
for service products when handling coolant
(
Ypage 207).
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It performs the
following tasks:
Rcorrosion protection
Rantifreeze protection
Rraising the boiling point
If the coolant has antifreeze protection down
to -35 ‡(-37 †), the boiling point of the cool-
ant during operation is approximately 266 ‡
(130 †).
The antifreeze/corrosion inhibitor concen-
tration in the engine cooling system should:
Rbe at least 50 %. This will protect the
engine cooling system against freezing
down to around -13‡(-25 †).
Rnot exceed 50 % (antifreeze protection down
to-35 ‡[-37 †]). Otherwise, heat will not be
dissipated as effectively.
smart recommends an antifreeze/corrosion
inhibitor concentrate in accordance with MB
Specifications for Operating Fluids 310.1 or
325.6.
Antifreeze/corrosion inhibitor concentrate
in accordance with MB Specifications for
210Service products and filling capacities
>> Technical data.