coolant temperature MERCEDES-BENZ A-CLASS HATCHBACK 2015 Owners Manual

Convenience opening/closing (air-
recirculation mode) ...........................146
Coolant (engine)
Checking the level ......................... 326
Display message ............................ 275
Important safety notes .................. 402
Temperature (on-board computer, Mercedes-AMG vehicles) .............. .254
Temperature gauge ........................ 239
Warning lamp ................................. 301
Cooling
see Climate control
Copyright ............................................. 26
Crash-responsive emergency light-
ing ....................................................... 125
Cruise control
Activation conditions ..................... 193
Cruise control lever ....................... 192
Deactivating ................................... 194
Display message ............................ 281
Driving system ............................... 191
Important safety notes .................. 192
LIM indicator lamp ......................... 192
Selecting ........................................ 192
Setting a speed .............................. 193
Storing and maintaining current
speed ............................................. 193
Cup holder
Centre console .............................. 314
Important safety notes .................. 313
Rear compartment ......................... 314 D
Dashboard see Instrument cluster
Data
see Technical data
Daytime driving lights
Display message ............................ 273
Function/notes ............................ .120
Switching on/off (on-board com-
puter) ............................................. 251
Dealership
see Qualified specialist workshop
Declarations of conformity ................. 23
Diagnostics connection ......................24
Diesel .................................................. 399 Digital speedometer
.........................243
Dipped-beam headlamps
Changing bulbs .............................. 127
Display message ............................ 271
Setting for driving abroad (sym-
metrical) ........................................ 120
Switching on/off ........................... 121
DIRECT SELECT lever
Automatic transmission ................. 169
Display message
Driving systems ............................ .278
Display messages
ASSYST PLUS ................................ 327
Calling up (on-board computer) ..... 257
Engine ............................................ 275
General information ....................... 257
Hiding (on-board computer) ........... 257
Key ................................................ 291
Lights ............................................. 271
Safety systems .............................. 258
Tyres .............................................. 283
Vehicle .......................................... .285
Distance warning function
Function/notes ................................ 71
Warning lamp ................................. 303
Distance warning signal (warning
lamp) ................................................. .303
DISTRONIC PLUS
Activation conditions ..................... 198
Cruise control lever ....................... 198
Deactivating ................................... 201
Display message ............................ 280
Displays in the multifunction dis-
play ................................................ 202
Driving tips ................................... .203
Function/notes ............................ .196
Important safety notes .................. 197
Selecting ........................................ 198
Setting the specified minimum
distance ......................................... 201
Stopping ........................................ 199
Door
Automatic locking (on-board com-puter) ............................................. 251
Automatic locking (switch) .............. .91
Central locking/unlocking (key) ...... 83
Control panel .................................. .37
Display message ............................ 289 8
Index

Selecting ........................................ 195
Storing the current speed .............. 195
Variabl e......................................... 195
SPEEDTRONIC (variable)
Storing the current speed and
calling up the last stored speed ..... 195
SPORT handling mode
Deactivating/activating
(Mercedes-AMG vehicles) ................ 75
Warning lamp ................................. 298
Start-off assist
Activating ....................................... 206
Important safety notes .................. 206
Start/Stop button
Removing ....................................... 159
Starting the engine ........................ 160
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 159
STEER CONTROL .................................. 77
Steering
Display message ............................ 290
Steering assistant STEER CON-
TROL
see STEER CONTROL
Steering wheel
Adjusting (manually) ...................... 112
Button overview ............................... 32
Buttons (on-board computer) ......... 239
Cleaning ......................................... 334
Gearshift paddle s........................... 177
Important safety notes .................. 112
Steering wheel gearshift paddles .... 177
Stopwatch (RACETIMER) ................... 254
Stowage compartment
Map pockets .................................. 309
Stowage compartments
Armrest (front) ............................... 308
Armrest (under) ............................. 308
Centre console .............................. 307
Centre console (rear) ..................... 309
Cup holde r..................................... 313
Glove compartment ....................... 307
Important safety information ......... 307
Spectacles compartment ............... 307
Under driver's seat/front-
passenger sea t.............................. 308 Stowage net
....................................... 309
Stowage space
Stowage net ................................... 309
Summer tyres .................................... 360
Sun visor ............................................ 315
Suspension
Adaptive Damping System ............. 208
Suspension settings
AMG RIDE CONTROL sports sus-
pension .......................................... 207 T
Tail lamps see Lights
Tailgate
Display message ............................ 288
Emergency unlocking ....................... 93
Important safety notes .................... 92
Opening dimensions ...................... 404
Opening/closing (from outside) ....... 93
Tank
see Fuel tank
Technical data
Capacities ...................................... 396
Emergency spare wheel ................. 392
Information .................................... 394
Trailer load s................................... 406
Tyres/wheels ................................. 372
Vehicle data ................................... 404
Telephone
Accepting a call (multifunction
steering wheel) .............................. 247
Display message ............................ 290
Introduction ................................... 246
Menu (on-board computer) ............ 246
Number from the phone book ........ 247
Redialling ....................................... 247
Rejecting/ending a call ................. 247
Telephone compartment ................ 308
Temperature
Coolant .......................................... 239
Coolant (on-board computer,
Mercedes-AMG vehicles) ............... 254
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 254
Outside temperature ...................... 239
Setting (climate control )................ 142 18
Index

Instrument cluster
Displays and controls
i
Instrument cluster with speedometer
(km/h) Function Page
:
Speedometer
Speedometer segments 238
;
Multifunction display 241
=
Rev counter 239 Function Page
?
Coolant temperature 239
A
Fuel gauge
Fuel filler flap location indi-
cator æ: the fuel filler
cap is on the left. B
Instrument cluster lighting 238
i
Information on displaying the outside
temperature in the multifunction display
can be found under "Outside temperature
display" (Y page 239). 30
Instrument clusterAt a glance

Problem
Possible causes/consequences and
M
MSolutions Vehicles with a petrol
engine:
The engine is not run-
ning 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.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at a qualified specialist
workshop. The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be on 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 326). 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. DYNAMIC SELECT button (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change
the drive program. Depending on the drive
program selected, the following vehicle char- acteristics will change:
R the drive (engine and transmission man-
agement)
R the suspension (vehicles with damping sys-
tem or AMG RIDE CONTROL)
R the steering
R the availability of the ECO start/stop func-
tion
R the climate control
If the ignition is switched off for less than four hours, the previously selected drive program
is activated when the engine is next started. If the ignition is switched off for more than four hours, drive program
Cis activated when the
engine is next started. X
Press DYNAMIC SELECT controller :as
many times as necessary until the desired
drive program is selected.
The selected drive program appears in the
multifunction display. After five seconds
the display goes out and the status icon of the selected drive program appears. 166
DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)Driving and parking

The segments between the speed of the
vehicle in front and the stored speed light
up. Rev counter
! Do not drive in the overrevving range.
Doing so will damage the engine.
The red band in the rev counter indicates the
engine's overrevving range.
The engine is limited within a range to protect the engine when the red band is reached. Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
Bear in mind that the outside temperature
display indicates the measured air tempera-
ture and not the road surface temperature.
The outside temperature display is in the mul- tifunction display (Y page 241).
There is a short delay before a change in out- side temperature appears in the multifunc-
tion display. Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
The coolant temperature gauge is in the
instrument cluster on the right-hand side
(Y page 30). Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †.
At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise
to the end of the scale. Operating the on-board computer
Overview :
Multifunction display
; Right control panel
= Left control panel
X To activate the on-board computer: turn
the key to position 1in 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. Displays and operation
239On-board computer/Displays Z

For safety reasons, not all functions are reset:
the Limit
Limit speed
speed(winter
(winter tyres)
tyres)function
in permanent SPEEDTRONIC can only be set
in the Vehicle
Vehicle submenu.
If you want to reset the Daytime driving
Daytime driving
lights
lights function in the Lights
Lights submenu, you
must turn the key to position 1in the ignition
lock. AMG menu (Mercedes-AMG vehicles)
WARMUP :
Digital speedometer
; Gear indicator
= Upshift indicator
? Engine oil temperature
A Coolant temperature
B Transmission oil temperature
X Press the =or; button on the steer-
ing wheel to select the AMG
AMG menu.
Upshift indicator: upshift indicatorUP
UP=
indicates that the engine has reached the
overrevving range when in the manual drive
program.
Engine and transmission oil tempera-
ture: when the engine and transmission
are at normal operating temperature, oil
temperature ?and Bare displayed in
white in the multifunction display.
If the multifunction display shows oil tem-
perature ?orB in blue, the engine or the
transmission are not yet at normal operat-
ing temperature. Avoid using the full output
of the engine during this time. SETUP :
Drive system Comfort Comfort/Sport
Sport/Sport +Sport+
; Suspension Comfort
Comfort/SportSport/Sport +
Sport +
= Transmission D
D/MM
? ESP ®
On
On/ Off
Off or SPORT handling mode
Sport
Sport
SETUP displays the following information and
functions:
R the digital speedometer
R the gear indicator
R the drive system setting
R the suspension mode
R the transmission position
R the ESP ®
(Electronic Stability Program) sta-
tus
X Press the =or; button on the steer-
ing wheel to select the AMG
AMGmenu.
X Press 9repeatedly until SETUP
appears.
RACETIMER Displaying and starting the RACETIMER
:
Lap
; RACETIMER
The RACETIMER is only intended for use on a closed race circuit. Do not use the function on
public roads. 254
Menus and submenusOn-board computer/Displays

Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top Top
up
upcoolant
coolant See
See
Owner's Manual
Owner'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 Top up the coolant, observing the warning notes before doing so
(Y page 326).
If you have to top up the coolant frequently:
X Contact a qualified specialist workshop and have the engine
cooling system checked. ? The fan motor is faulty.
X If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g.
driving in mountainous terrain and stop-start traffic. ?
Coolant Stop vehi‐ Coolant Stop vehi‐
cle Switch engine cle Switch engine
off off The coolant is too hot.
A warning tone also sounds.
G WARNING
Never drive with an overheated engine. Driving when your engine is overheated can cause some fluids which may have leaked into
the engine compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is a risk of injury.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 184).
X Wait until the engine has cooled down.
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 below 120 †. The engine may
otherwise be damaged.
X Pay attention to the coolant temperature display.
If the temperature increases again:
X Consult a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 120 †. Display messages
275On-board computer/Displays Z

Engine
Problem
Possible causes/consequences and
M
MSolutions ;
The yellow engine diag-
nostics warning lamp
lights up while the
engine is running. There may be a fault, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system (for vehicles with petrol engines)
R in the fuel system
The emission limit values may be exceeded and the engine may be running in emergency mode.
X Consult a qualified specialist workshop immediately. Vehicles with a diesel engine: the fuel tank has been run dry
(Y
page 183).
X Start the engine three to four times after refuelling.
If the yellow engine diagnostics warning lamp goes out, emer-
gency running mode is cancelled. The vehicle need not be
checked. æ
The yellow reserve fuel
warning lamp is on
while the engine is run-
ning.
The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated if the fuel level
drops into the reserve range.
X Refuel at the nearest filling station. ?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the start of the scale. The temperature sensor for the coolant temperature gauge is
faulty.
The coolant temperature is no longer being monitored. There is a risk of engine damage if the coolant temperature is too high.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine. Do not continue driving
under any circumstances.
X Safeguard the vehicle against rolling away (Y page 184).
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
301On-board computer/Displays Z

Problem
Possible causes/consequences and
M
MSolutions ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may
be blocked or the electric engine radiator fan may be malfunc-
tioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 184).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and top up the coolant, observing the
warning notes (Y page 326).
X If you have to top up the coolant frequently, have the engine
cooling system checked.
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 coolant temperature is
below 120 †. The engine may otherwise be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g.
driving in mountainous terrain and stop-start traffic. ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
The coolant temperature has exceeded 120 †. The airflow to the
engine radiator may be blocked or the coolant level may be too
low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Never drive with an overheated engine. Driving when your engine is overheated can cause some fluids which may have leaked into
the engine compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is a risk of injury.
X Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 184).302
Warning and indicator lamps in the instrument clusterOn-board computer/Displays

Problem
Possible causes/consequences and
M
MSolutions X
Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and top up the coolant, observing the
warning notes (Y page 326).
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g.
driving in mountainous terrain and stop-start traffic. Driving systems
Problem
Possible causes/consequences and
M MSolutions ·
The red distance warn-
ing lamp lights up while
the vehicle is in motion. The distance to the vehicle in front is too small for the speed
selected.
X Increase the distance. ·
The red distance warn-
ing lamp lights up while
the vehicle is in motion. A warning tone also
sounds. You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
For further information on the distance warning function of COL-
LISION PREVENTION ASSIST PLUS, see (Y page 70).Warning and indicator lamps in the instrument cluster
303On-board computer/Displays Z