warning light MERCEDES-BENZ GLA-Class 2016 X156 Workshop Manual
[x] Cancel search | Manufacturer: MERCEDES-BENZ, Model Year: 2016, Model line: GLA-Class, Model: MERCEDES-BENZ GLA-Class 2016 X156Pages: 390, PDF Size: 8.37 MB
Page 216 of 390
Monitoring range of the sensors
In particular, the detection of obstacles can
be impaired if:
Rthere is dirt on the sensors or anything elsecovering the sensors
Rthere is poor visibility, e.g. due to fog, heavy
rain or snow
Ra narrow vehicle traveling in front, e.g. a
motorbike or bicycle
Rthe road has very wide lanes
Rthe road has narrow lanes
Ryou are not driving in the middle of the lane
Rthere are barriers or similar lane borders
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area up to 10 ft
(3 m) behind your vehicle and directly next to
your vehicle, as shown in the diagram.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may be
the case if the vehicles are driving on the inner
side of their lane. Due to the nature of the system:
Rwarnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
Rwarnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
Warning display
:Warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
When Blind Spot Assist is activated, indicator
lamp :in the exterior mirrors lights up yel-
low at speeds of up to 20 mph (30 km/h). At
speeds above 20 mph (30 km/h), the indica-
tor lamp goes out and Blind Spot Assist is
operational.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp :on the corre-
sponding side lights up red. This warning is
always emitted when a vehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake a vehicle,
the warning only occurs if the difference in
speed is less than 7 mph (12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Blind Spot
Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.
214Driving systems
Driving and parking
Page 217 of 390
Collision warning
If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the
corresponding turn signal, a double warning
tone sounds. Red warning lamp :flashes. If
the turn signal remains on, vehicles detected
are indicated by the flashing of red warning
lamp :. There are no further warning tones.
Switching on Blind Spot Assist
XMake sure that Blind Spot Assist is activa-
ted in the on-board computer
(
Ypage 228).
XTurn the SmartKey to position 2in the igni-
tion lock.
Warning lamps :in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of multifunc-
tion camera :which is attached behind the
top of the windshield. Active Lane Keeping
Assist detects lane markings on the road and
can warn you before you leave your lane unin- tentionally.
This function is available in the range between
40 mph and 120 mph (60 km/h and
200 km/h).
A warning may be given if a front wheel
passes over a lane marking. It will warn you by
means of intermittent vibration in the steer-
ing wheel for up to 1.5 seconds. Important safety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist.
If you fail to adapt your driving style, Lane
Keeping Assist can neither reduce the risk of
an accident nor override the laws of physics.
Lane Keeping Assist cannot take into account
the road, traffic and weather conditions. Lane
Keeping Assist is merely an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
The Lane Keeping Assist does not keep the
vehicle in the lane.
The system may be impaired or may not func- tion if:
Rthere is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic,
the sun or reflection from other vehicles
(e.g. if the road surface is wet)
Rthe windshield is dirty, fogged up, damagedor covered, for instance by a sticker, in the
vicinity of the camera
Rthere are no, several or unclear lane mark-
ings for a lane, e.g. in areas with road con-
struction work
Driving systems215
Driving and parking
Z
Page 220 of 390
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 25).
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.
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.
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.
For an overview, see the instrument panel
illustration (
Ypage 31).
Displays and operation
Instrument cluster lighting
The light sensor in the instrument cluster
automatically controls the brightness of the
multifunction display. In daylight, the displays
in the instrument cluster are not illuminated.
The lighting in the instrument cluster, in the
displays and the controls in the vehicle inte-
rior can be adjusted using the brightness con-
trol knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(
Ypage 31).
XTurn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set to the
Ã,Tor
L position, the brightness is dependent
upon the brightness of the ambient light.
Speedometer with segments
The speedometer is divided into segments
only on vehicles with DISTRONIC PLUS.
The segments in the speedometer indicate
which speed range is available.
RDISTRONIC PLUS activated (Ypage 186):
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.
218Displays and operation
On-board computer and displays
Page 230 of 390
It may be best to deactivate ESP®in the fol-
lowing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
Deactivating/activating ESP
®in Mercedes-
AMG vehicles (
Ypage 70).
For further information about ESP
®, see
(
Ypage 69).
XStart the engine.
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress9or: to select ESP.
XPressato confirm.
The current selection appears.
XTo activate/deactivate: press thea
button again.
ESP
®is deactivated if the åwarning
lamp in the instrument cluster lights up
continuously when the engine is running.
If the ÷ andå warning lamps light up
continuously, ESP
®is not available due to a
malfunction.
Observe the information on warning lamps
(
Ypage 271).
Observe the information on display messages
(
Ypage 236).
Activating/deactivating COLLISION
PREVENTION ASSIST PLUS
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress the9or: button to select
Collision Prevent. Assist
.
XPress ato confirm.
The current selection appears.
XTo activate/deactivate: press thea
button again.
When COLLISION PREVENTION ASSIST
PLUS is deactivated, the æsymbol
appears in the multifunction display in the
assistance graphic display. For further information about COLLISION
PREVENTION ASSIST PLUS, see (
Ypage 66).
Activating/deactivating ATTENTION
ASSIST
XPress the
=or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress the9or: button to select
Attention Assist
.
XPress ato confirm.
The current selection appears.
XPress ato confirm.
XPress the :or9 button to set Off,
Standard
or Sensitive.
XPress the abutton to save the setting.
When ATTENTION ASSIST is deactivated,
the é symbol appears in the multifunc-
tion display in the assistance graphics dis-
play.
For further information about ATTENTION
ASSIST, see (
Ypage 211).
Activating/deactivating Blind Spot
Assist
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress the9or: button to select
Blind Spot Assist
.
XPress ato confirm.
The current selection appears.
XTo activate/deactivate: press thea
button again.
For further information about Blind Spot
Assist, see (
Ypage 213).
Activating/deactivating Lane Keeping
Assist
XPress the =or; button on the steer-
ing wheel to select the DriveAssist
menu.
XPress the9or: button to select
Lane Keeping Assist
.
XPress ato confirm.
The current selection appears.
228Menus and submenus
On-board computer and displays
Page 231 of 390
XPressaagain to confirm.
XPress the :or9 button to set Off,
Standard
or Adaptive.
XPress the abutton to save the setting.
When Lane Keeping Assist is activated, the
multifunction display shows the lane mark-
ings as bright lines in the assistance
graphic.
For further information about Lane Keeping
Assist, see (
Ypage 215).
Service menu
Depending on the equipment installed in the
vehicle, you have the following options in the
Serv.
menu:
RCalling up display messages in message
memory (
Ypage 235)
RRestarting the tire pressure loss warning
system (Canada only) (
Ypage 347)
RChecking the tire pressure electronically
(USA only) (
Ypage 348)
RCalling up the service due date
(
Ypage 313)
Settings menu
Introduction
Depending on the equipment installed in the
vehicle, in the Sett.
menu you have the fol-
lowing options:
RChanging the instrument cluster settings
RChanging the light settings
RChanging the vehicle settings
RChanging the convenience settings
RRestoring the factory settings
Instrument cluster
Selecting the distance unit
The Display Unit Speed-/Odometer:
function allows you to choose whether cer-
tain displays appear in kilometers or miles in
the multifunction display.
XPress the =or; button on the steer-
ing wheel to select the Sett.
menu.
XPress the:or9 button to select the
Instrument Cluster
submenu.
XPress ato confirm.
XPress the :or9 button to select the
Display Unit Speed-/Odometer
func-
tion.
You will see the selected setting: km
or
miles
.
XPress the abutton to save the setting.
The selected unit of measurement for dis-
tance applies to:
Rdigital speedometer in the Tripmenu
ROdometer and the trip odometer
RTrip computer
Rcurrent fuel consumption and approximate
range
RNavigation instructions in the Navimenu
RCruise Control
RDISTRONIC PLUS
RASSYST PLUS service interval display
Switching the additional speedometer
on/off
If the additional speedometer is switched on, the speed is shown in the status area of the
Menus and submenus229
On-board computer and displays
Z
Page 238 of 390
Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
Currently Unavail‐
able See Opera‐
tor's Manual
ABS (Anti-lock Braking System), BAS (Brake Assist), ESP®(Elec-
tronic Stability Program), the HOLD function and hill start assist
are temporarily unavailable.
COLLISION PREVENTION ASSIST PLUS may also have failed.
In addition, the !,÷andå warning lamps may light up
in the instrument cluster.
ATTENTION ASSIST is deactivated.
Possible causes are:
RSelf-diagnosis is not yet complete.
RThe 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.
XCarefully drive a short distance on a suitable stretch of road,
making slight steering movements 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, BAS, ESP®, the HOLD function and hill start assist are not
available due to a malfunction.
COLLISION PREVENTION ASSIST PLUS may also have failed.
The !, ÷,åand$ (USA only) or J(Canada only)
warning lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
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.
236Display messages
On-board computer and displays
Page 268 of 390
Display messagesPossible causes/consequences andMSolutions
Â
Key Not Detected
(whitedisplay mes -
sage )
The SmartKey is currentl yundetected.
XChange th elocation of th eSmartKey in th evehicle.
If th eSmartKey still canno tbe detected:
XOperat eth evehicl ewit hth eSmartKey in th eignition lock.
Â
Remove'Start 'But‐
ton and Insert Key
The SmartKey is continually undetected.
KEYLESS-GO is temporarily malfunctionin gor is defective. Awarn -
in g tone also sounds.
XInser tth eSmartKey into th eignition loc kand tur nit to th e
desire dposition .
XVisitaqualified specialist workshop .
Warning and indicator lamps in th einstrument cluste r
General notes
Some systems carry out aself-diagnosi swhen th eignition is switched on .Therefore ,som e
indicato rand warnin glamp smay ligh tup or flas htemporarily. This behavio ris non-critical.
These indicato rand warnin glamp sonly indicate amalfunction if they ligh tup or flas hafter
startin gth eengin eor whils tdriving.
Safet y
Sea tbelt s
ProblemPossible causes/consequences and MSolutions
ü
Afterstartin gth e
engine, th ered seat
belt warnin glamp lights
up fo r 6seconds.The seat belt warnin glamp reminds th edriver and fron tpassenger
to faste ntheir seat belts.
XFaste nyour seat belt (Ypage 46).
ü
Afterstartin gth e
engine, th ered seat
belt warnin glamp lights
up. In addition , awarn -
in g tone sounds fo rup
to 6seconds.The driver's seat belt is no tfastened.
XFaste nyour seat belt (Ypage 46).
The warnin gtone ceases .
266Warning and indicator lamps in the instrument cluster
On-board computer and displays
Page 269 of 390
ProblemPossible causes/consequences andMSolutions
ü
The red seat belt warn-
ing lamp lights up after
the engine starts, as
soon as the driver's or
the front-passenger
door is closed.The driver or front passenger has not fastened their seat belt.
XFasten your seat belt (Ypage 46).
The warning lamp goes out.
There are objects on the front-passenger seat.
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out.
ü
The red seat belt warn-
ing lamp flashes and an
intermittent audible
warning sounds.The driver or front passenger has not fastened their seat belt. The
vehicle is being driven faster than 15 mph (25 km/h) or has briefly
been driven faster than 15 mph (25 km/h).
XFasten your seat belt (Ypage 46).
The warning lamp goes out and the intermittent warning tone
ceases.
There are objects on the front-passenger seat. The vehicle is being
driven faster than 15 mph (25 km/h) or has briefly been driven
faster than 15 mph (25 km/h).
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases.
Warning and indicator lamps in the instrument cluster267
On-board computer and displays
Z
Page 270 of 390
Safety systems
ProblemPossible causes/consequences andMSolutions
J
The yellow brake sys-
tem warning lamp
lights up while the
engine is running.The brake system is malfunctioning.
GWARNING
The braking characteristics may be affected.
There is a risk of an accident.
XDrive on taking extra care.
XVisit a qualified specialist workshop immediately.
$(USA only)
J (Canada only)
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.GWARNING
The brake boosting effect is malfunctioning and the braking char-
acteristics may be affected.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 171).
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
$ (USA only)
J (Canada only)
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 171).
XDo not add brake fluid. Adding more will not remedy the mal-
function.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
268Warning and indicator lamps in the instrument cluster
On-board computer and displays
Page 272 of 390
ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS is temporarily unavailable. Therefore, BAS, COLLISION PRE-
VENTION ASSIST PLUS, ESP®, EBD (electronic brake force distri-
bution), the HOLD function and hill start assist are also deactiva-
ted, for example.
Possible causes are:
RSelf-diagnosis is not yet complete.
RThe on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear 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 a risk of an accident.
XCarefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
270Warning and indicator lamps in the instrument cluster
On-board computer and displays