2016 MERCEDES-BENZ GLC-Class warning

Useful information............................238
Important safety notes .....................238
Displays and operation .....................238
Menus and submenus ......................243
Display messages ............................. 257
Warning and indicator lamps in the
instrument cluster ............................291
237
On-board computer and displays

Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment 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.
iRead the information on qualified special-
ist workshops (
Ypage 27).
Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
GWARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The
operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
If the operating safety of your vehicle is
impaired, pull over as soon as it is safe to do
so. Contact a qualified specialist workshop. The on-board computer only shows messages
or warnings from certain systems in the mul-
tifunction display. You should therefore make
sure your vehicle is operating safely at all
times.
For an overview, see the instrument panel
illustration (
Ypage 33).
Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the
displays and the controls in the vehicle inte-
rior can be adjusted using brightness control
knob
:.
XTurn brightness control knob :up or
down.
If you turn the light switch (
Ypage 124) to
the T, ÃorL position, the
brightness will depend upon the brightness
of the ambient light.
iThe light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are illuminated. A dimming function
is not possible in daylight.
Speedometer with segments
The speedometer is divided into segments on vehicles with DISTRONIC PLUS.
238Displays and operation
On-board computer and displays

The segments in the speedometer indicate
which speed range is available.
RCruise control activated (Ypage 181):
The segments light up from the stored
speed to the type-tested maximum speed.
RDISTRONIC PLUS activated (Ypage 183):
One or two segments in the set speed
range light up.
RDISTRONIC PLUS detects a vehicle in front
that is driving at a slower speed than the
stored speed:
The segments between the speed of the
vehicle in front and the stored speed light
up.
Tachometer
!
Do not drive in the overrevving range, as
this could damage the engine.
The red band in the tachometer indicates the engine's overrevving range.
The fuel supply is interrupted 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 temperature measured
and does not record the road temperature.
The outside temperature display is in the mul-
tifunction display (
Ypage 241).
Changes in the outside temperature are dis-
played after a short delay.
Coolant temperature display
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
!A display message is shown if the coolant
temperature is too high.
If the coolant temperature is over 248 ‡
(120 †), do not continue driving. The
engine will otherwise be damaged.
The coolant temperature display is in the
lower section of the tachometer (
Ypage 33).
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 248 ‡ (120 †).
Operating the on-board computer
:Multifunction display
;Right control panel
=Left control panel
XTo activate the on-board computer: turn
the SmartKey to position 1in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using
Displays and operation239
On-board computer and displays
Z

XTo select a DVD single drive or disc:
pressabriefly. The list containing the
media sources appears.
XPress :or9 to select the corre-
sponding DVD single drive or disc.
XPress ato confirm.
XTo open the scene list: press:or
9 briefly.
XTo select the next or previous scene in
the scene list: press:or9 briefly.
XTo select a scene in the scene list using
rapid scroll: press and hold :or9
until desired scene :has been reached.
XPress ato confirm your selection.
Telephone menu
Introduction
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
When telephoning, you must observe the
legal requirements for the country in which
you are currently driving.
XSwitch on the mobile phone (see the man-
ufacturer’s operating instructions).
XSwitch on Audio 20 or COMAND, see the
separate operating instructions.
XEstablish a Bluetooth®connection to Audio
20 or COMAND, see the separate operating
instructions.
XPress the òbutton on the steering
wheel to open the menu list.
XPress :or9 on the steering wheel
to select the Telephone
menu.
XConfirm by pressing aon the steering
wheel.
You will see one of the following display mes-
sages in the multifunction display:
RPhone READYor the name of the network
provider: the mobile phone has found a
network and is ready to receive.
RPhone No Service: there is no network
available or the mobile phone is searching
for a network.
Accepting a call
If someone calls you when you are in the
Telephone
menu, a display message appears
in the multifunction display.
You can accept a call at any time, even if you
are not in the Telephone
menu.
XPress the6button on the steering
wheel to accept an incoming call.
Rejecting or ending a call
You can end or reject a call at any time even if
you are not in the Telephone
menu.
XPress the~button on the steering
wheel to reject or end a call.
250Menus and submenus
On-board computer and displays

The assistance graphic displays the status
of and information from the following driv-
ing systems or driving safety systems:
RDISTRONIC PLUS (Ypage 183)
RTraffic Sign Assist (Ypage 216)
RDistance warning and the autonomous
braking function COLLISION PREVEN-
TION ASSIST PLUS (
Ypage 70)
RPRE-SAFE®Brake (Ypage 75)
RBlind Spot Assist (Ypage 217) or Active
Blind Spot Assist (
Ypage 222)
RATTENTION ASSIST (Ypage 214)
RLane Keeping Assist (Ypage 220) or
Active Lane Keeping Assist
(
Ypage 225)
RRear window wiper (Ypage 135)
XPress :to display the ATTEN-
TION ASSIST assessment.
Service menu
Introduction
Depending on the equipment installed in the
vehicle, you have the following options in the
Service
menu:
RCalling up display messages in message
memory (
Ypage 257)
RChecking the tire pressure electronically
(
Ypage 383)
RCalling up the service due date
(
Ypage 343)
Settings menu
Introduction
Depending on the equipment installed in the
vehicle, you have the following options in the
Settings
menu:
RChanging assistance settings
(
Ypage 252)
RChanging head-up display settings
(
Ypage 254)
RChanging the light settings (Ypage 255)
RChanging the instrument cluster settings
(
Ypage 255)
RRestoring the factory settings
(
Ypage 256)
Assistance submenu
Activating/deactivating COLLISION PRE-
VENTION ASSIST PLUS
XPress the òbutton on the steering
wheel to open the menu list.
XPress the :or9 button on the steer-
ing wheel to select the Settings
menu.
XConfirm by pressingaon the steering
wheel.
XUse : or9 to select the DriveAs‐
sistsubmenu.
XPressato confirm.
XPress 9or: to select Collision
Prevention.
252Menus and submenus
On-board computer and displays

Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
Currently Unavail‐
able See Opera‐
tor's Manual
ABS (Anti-lock Brake System), ESP®(Electronic Stability Program),
BAS (Brake Assist), PRE‑ SAFE®, HOLD function, Crosswind Assist,
hill start assist, STEER CONTROL, Active Lane Keeping Assist and
Active Blind Spot Assist are temporarily unavailable.
BAS PLUS with Cross-Traffic Assist, PRE‑SAFE
®Brake, PRE‑ SAFE®
PLUS and COLLISION PREVENTION ASSIST PLUS may also have
failed.
In addition, the ÷and! warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
For example, the on-board voltage may be insufficient.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XDrive on carefully.
Carefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message:
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
!÷
Inoperative See
Operator's Manual
ABS, ESP®, BAS, PRE‑SAFE®, HOLD function, Crosswind Assist,
hill start assist, STEER CONTROL, Active Lane Keeping Assist and Active Blind Spot Assist are unavailable due to a malfunction.
BAS PLUS with Cross-Traffic Assist, PRE‑ SAFE
®Brake, PRE‑SAFE®
PLUS and COLLISION PREVENTION ASSIST PLUS may also have
failed.
The$ (USA only) or J(Canada only), ÷and! warn-
ing lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
GWARNING
258Display messages
On-board computer and displays

Engine
Display messagesPossible causes/consequences andMSolutions
+
Check Coolant
Level See Opera‐
tor'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.
XAdd coolant, observing the warning notes before doing so
(
Ypage 341).
If you have to add coolant frequently:
XContact a qualified specialist workshop and have the engine
cooling system checked.
?The fan motor is faulty.
XAt coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic.
?
Coolant Too Hot
Stop Vehicle Turn
Engine Off
The coolant is too hot.
A warning tone also sounds.
GWARNING
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 the overheated engine can also cause serious burns
which can occur just by opening the hood.
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 172).
XWait until the engine has cooled down.
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 display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
XPay attention to the coolant temperature display.
If the temperature increases again:
XVisit a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120†) .
276Displa y messages
On-board computer and displays

Tires
Display messagesPossible causes/consequences andMSolutions
Please Correct
Tire Pressure
The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
XCheck the tire pressures at the next opportunity (Ypage 381).
XIf necessary, correct the tire pressure.
XRestart the tire pressure monitor (Ypage 383).
Check TiresThe tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 172).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (
Ypage 356).
XCheck the tire pressure (Ypage 381).
XIf necessary, correct the tire pressure.
Displa y messages285
On-board computer and displays
Z