warning light MERCEDES-BENZ GL 2016 Service Manual

Indicator and warning display
C
Yellow indicator lamp/red warning lamp
Active 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 Active Blind Spot Assist is activated,
indicator lamp C in the exterior mirrors lights
up yellow at speeds of up to 20 mph
(30 km/h). At speeds above 20 mph
(30 km/h), the indicator lamp goes out and
Active Blind Spot Assist is operational.
If a vehicle is detected within the monitoring
range at speeds above approximately 20 mph
(30 km/h), warning lamp C on the corre-
sponding side lights up red. This warning lamp
always lights up when a vehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake a vehicle
with a difference in speed of less than 7 mph
(12 km/h), a delayed warning occurs.
The yellow indicator lamp goes out if reverse
gear is engaged. Active Blind Spot Assist is
not operational.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the brightness of the surroundings.
Visual and acoustic collision warning
If you switch on the turn signals to change
lanes and a vehicle is detected in the side
monitoring range, you receive a visual and
acoustic collision warning. You then hear a
double warning tone and red warning lamp C
flas hes. If the turn signal remains on, detec-
ted vehicles are indicated by the flashing of red warning lamp C . There are no further
warning tones.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a
lateral collision in the monitoring range, a
course-correcting brake application is carried
out. This is meant to assist you in avoiding a
collision.
G WARNING
A course-correcting brake application cannot
always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blin d Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the
sides.
If a course-correcting brake application
occurs, red warning lamp C flashes in the
exterior mirror and a dual warning tone
sounds. In addition, display D underlining
the danger of a side collision appears in the
multifunction display.
In very rare cases, the system may make an
inappropriate brake application. A course-
correcting brake application may be interrup-
ted at any time if you steer slightly in the
opposite direction or accelerate.
The course-correcting brake application is
available in the speed range between 20 mph
(30 km/h) and 120 mph (200 km/h).250
Driving systems
Driving and parking

Either no braking application, or a course-
correcting brake application adapted to the
driving situation occurs if: R
there are vehicles or obstacles, e.g. crash
barriers, close to both sides of your vehicle. R
a vehicle approaches you too closely at the
side. R
you have adopted a sporty driving style with
high cornering speeds. R
you brake or accelerate significantly. R
a driving safety system intervenes, e.g.
ESP ®
or PRE-SAFE ®
Brake.R
ESP ®
is switched off.R
the off-road program is activated (vehicles
without the ON&OFFROAD package). R
off-road program 1 or 2 is activated (vehi-
cles with the ON&OFFROAD package). R
the LOW RANGE off-road gear is activated
(vehicles with the ON&OFFROAD package). R
a loss of tire pressure or a defective tire is
detected.
Switching on Active Blind Spot Assist X
Make sure that Active Blind Spot Assist is
activated in the on-board computer
( Y
page 282). X
Turn the SmartKey to position 2 in the igni-
tion lock.
Warning lamps C in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Towing a trailer
When you attach a trailer, make sure you have
co rr ectly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. Active Blind Spot Assist is
then deactivated. The indicator lamp lights up
yellow in the exterior mirrors and the Active
Blind Spot Assist Currently Unavail‐
able See Operator's Manual message
appears in the multifunction display. Active Lane Keeping Assist General notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of camera C
at the top of the windshield. Active Lane
Keeping Assist detects lane markings on the
road and warns you before you leave your
lane unintentionally. If you do not react to the
warning, a lane-correcting application of the
brakes can bring the vehicle back into the
original lane.
This function is available in a speed range
between 40 mph and 120 mph (60 km/h and
200 km/h).
For Active Lane Keeping Assist to assist you
when driving, the radar sensor system must
be operational
Important safety notes
If you fail to adapt your driving style, Active
Lane Keeping Assist can neither reduce the
risk of accident nor override the laws of phys-
ics. Active Lane Keeping Assist cannot take
into account road, weather or traffic condi-
tions. Active Lane Keeping Assist is only 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.
Active Lane Keeping Assist cannot continu-
ously keep your vehicle in its lane.
G WARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.Driving system s 251
Dr ivi ng an d parking Z

In such cases, Active Lane Keeping Assist
can: R
give an unnecessary warning and then
make a course-correcting brake application
to the vehicle R
not give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention in a non-critical driv-
ing situation.
The system may be impaired or may not func-
tion if: R
there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray R
there is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet) R
the windshield is dirty, fogged up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera R
there are no, several or unclear lane mark-
ings for a lane, e.g. in areas with road con-
struction work R
the lane markings are worn away, dark or
covered up, e.g. by dirt or snow R
the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected R
the lane markings change quickly, e.g.
lanes branch off, cross one another or
merge R
the road is narrow and winding R
there are highly variable shade conditions
on the roadway R
no vehicle is detected in the adjacent lane
and there are broken lane markings
Warning vibration in the steering wheel
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.
In order that you are warned only when nec-
essary and in good time if you cross the lane
marking, the system recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if: R
you approach the outer lane marking on a
bend. R
the road has very wide lanes, e.g. a high-
way. R
the system recognizes solid lane markings.
The warning vibration occurs later if: R
the road has narrow lanes. R
you cut the corner on a bend.
Lane-correcting brake application
G WARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original
lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
G WARNING
Active Lane Keeping Assist does not detect
traffic conditions or road users. In very rare
cases, the system may make an inappropriate
brake application, e.g. after intentionally driv-
ing over a solid lane marking. There is a risk of
an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure that
there is sufficient distance on the side for
other traffic or obstacles.252
Driving systems
Driving and parking

If you leave your lane, under certain circum-
stances the vehicle will brake briefly on one
side. This is meant to assist you in bringing
the vehicle back to the original lane.
If a lane-correcting brake application occurs,
display C appears in the multifunction dis-
play.
A lane-correcting brake application can only
be made after driving over a solid, recogniz-
able lane marking. Before this, a warning
must be given by means of intermittent vibra-
tion in the steering wheel. In addition, a lane
with lane markings on both sides must be
recognized. The brake application also
slightly reduces vehicle speed.
i A further lane-correcting brake applica-
tion can only occur after your vehicle has
returned to the original lane.
No lane-correcting brake application occurs
if: R
you clearly and actively steer, brake or
accelerate. R
you cut the corner on a sharp bend. R
you have switched on the turn signal. R
a driving safety system intervenes, e.g.
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist. R
you have adopted a sporty driving style with
high cornering speeds or high rates of
acceleration. R
ESP ®
is switched off.R
the transmission is not in position D . R
on vehicles with a trailer tow hitch, the
electrical connection to the trailer has been
correctly established. R
the off-road program is activated (vehicles
without the ON&OFFROAD package). R
off-road program 1 or 2 is activated (vehi-
cles with the ON&OFFROAD package). R
the LOW RANGE off-road gear is activated
(vehicles with the ON&OFFROAD package). R
when a loss of tire pressure or a defective
tire has been detected and displayed.
There is a possibility that the Active Lane
Keeping Assist could misjudge the given traf-
fic situation. An inappropriate brake applica-
tion may be interrupted at any time if you: R
steer slightly in the opposite direction R
switch on the turn signal R
clearly brake or accelerate
A lane-correcting brake application is inter-
rupted automatically if: R
a driving safety system intervenes, e.g.
ESP ®
, PRE-SAFE ®
Brake or Active Blind
Spot Assist. R
lane markings can no longer be recognized.
Switching on Active Lane Keeping Assist X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard
or Adaptive ( Y
page 282).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
( Y
page 281) are shown in green. Active
Lane Keeping Assist is ready for use.
If Standard is selected, no warning vibra-
tion occurs if: R
you switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time. R
a driving safety system intervenes, such
as ABS, BAS or ESP ®
.
When Adaptive is selected, no warning
vibration occurs if: Driving systems 253
Driving and parking Z

R
you switch on th e tur n signals. In this
event , th e warnings are suppressed fo r a
certain period of time. R
a drivin g safet y system intervenes, e.g.
ABS, BA S or ES P ®
.R
you accelerat e hard, e.g. kickdown .R
you brak e hard.R
you steer actively, e.g. swerve to avoid an
obstacle or chang e lanes quickly.R
you cut th e corner on a shar p bend.
Towing a trailer
Whe n you attach a trailer , mak e sur e you hav e
correctl y established th e electrica l connec -
tion . This can be accomplished by checking
th e trailer lighting . Lane-correcting brak e
application doe s no t take plac e when towin g
a trailer . Active Lan e Keepin g Assis t is no t
activated and th e lines in th e assistanc e
graphi c are gray.
On-road program s (vehicles wit h th e
ON&OFFROAD package)
General notes
The on-road programs assist you during on -
road drivin g and th e off-road programs when
drivin g off-road ( Y
page 258).
The following program message s remain in
th e multifunction display until th e corre-
spondin g vehicl e level has been set . Up to off-
road level 2, you can hide th e program mes -
sage s usin g th e 8 or v butto n on th e
multifunction steerin g wheel. AUT O program
Selec t th e AUTO program fo r a mor e com-
fortable rid e under all normal drivin g condi-
tions.
Your selection remain s stored eve n if you
remov e th e SmartKey from th e ignition lock.X
Selecto r wheel C engaged : briefl y press
selector whee l C .
Selecto r whee l C extends. X
To select : tur n selector whee l C until indi-
cator lamp D comes on .
AUTO indicator

! A function or performance test should
only be carried out on a two-axle dyna-
mometer. Before you operate the vehicle
on such a dynamometer, please consult a
qualified workshop. You could otherwise
damage the drive train or the brake system.
i In wintry driving conditions, the maximum
effect of 4MATIC can only be achieved if
you use winter tires (M +S tires), with snow
chains if necessary.
Further information about "Driving off-road"
( Y
page 198).
DSR (Downhill Speed Regulation) General notes
DSR is an aid to assist you when driving down-
hill. It keeps the speed of travel at the speed
selected on the on-board computer. The
steeper the downhill gradient, the greater the
DSR braking effect on the vehicle. When driv-
ing on flat stretches of road or on an uphill
gradient, the DSR braking effect is minimal or
nonexistent.
DSR controls the vehicle’s speed when it is
activated and the transmission is in position
D , R or N . You can drive at a higher or a lower
speed than that set on the on-board computer
at any time by accelerating or braking.
Important safety notes
G WARNING
If the speed driven and the set speed deviate
and you activate DSR on a slippery road sur-
face, the wheels may lose traction. There is an
increased danger of skidding and accidents.
Before switching DSR on, please take into
consideration the road surface and the differ-
ence between driving speed and the set
speed.
If you fail to adapt your driving style, DSR can
neither reduce the risk of accident nor over-
ride the laws of physics. DSR cannot take
account of road, weather and traffic condi-
tions. DSR is only 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.
You are always responsible for keeping con-
trol of the vehicle and for assessing whether
the downhill gradient can be managed. DSR
may not always be able to keep to the set
speed, depending on road surface and tire
conditions. Select a set speed suitable for the
prevailing conditions and when necessary,
apply the brakes manually.
Activating DSR
X
Press button C .
Indicator lamp D lights up.
The

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.
i Read the information on qualified special-
ist workshops ( Y
page 29).
Important safety notes
G WARNING
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.
G WARNING
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 ( Y
page 35).
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 the brightness con-
trol knob.
The brightness control knob is located on the
bottom left of the instrument cluster
( Y
page 35). X
Turn the brightness control knob clockwise
or counter-clockwise.
If you turn the light switch to X , ` or
X , the brightness is dependent upon
the brightness of the ambient light.
i 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.
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. R
DISTRONIC PLUS activated ( Y
page 205):
One or two segments in the set speed
range light up. R
DISTRONIC 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.272
Displays and operation
On-board computer and displays

Service menu
Depending on the equipment installed in the
vehicle, you have the following options in the
Serv.
menu: R
Calling up display messages in message
memory ( Y
page 290)R
Restarting the tire pressure loss warning
system ( Y
page 412) or checking the tire
pressure electronically ( Y
page 414)R
Calling up the service due date
( Y
page 375)
Settings menu
Introduction
Depending on the equipment installed in the
vehicle, In the Settings
menu you have the
following options: R
Changing the instrument cluster settings
( Y
page 283) R
Changing the light settings ( Y
page 284)R
Changing the vehicle settings
( Y
page 285) R
Changing the convenience settings
( Y
page 285) R
Restoring the factory settings
( Y
page 286) Instrument cluster submenu 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. X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press the d or c button to select the
Instrument Cluster
submenu.X
Press v to confirm. X
Press the d or c button to select the
Display Unit Speed-/Odometer
func-
tion.
You will see the selected setting: km
or
miles
. X
Press the v button to save the setting.
The selected unit of measurement for dis-
tance applies to: R
Digital speedometer in the Trip menuR
Odometer and the trip odometer R
Trip computer R
Current consumption and the range R
Navigation instructions in the Navi menuR
Cruise Control R
DISTRONIC PLUS R
ASSYST PLUS service interval display
Selecting permanent display
Using the Permanent display:
function,
you can switch on the outside temperature or
the additional speedometer in the multifunc-
tion display. X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press the d or c button to select the
Instrument Cluster
submenu.X
Press v to confirm. X
Press the d or c button to select the
Permanent Display:
function.
The current selection outside tempera‐
ture , Dig. speedo [km/h] or Dig.
speedo [mph] appears.Menus and submenus 283
On-board computer and displays Z

R
surround lighting: the exterior lighting
remains lit for 40 seconds after unlocking
with the SmartKey. If you start the engine,
the surround lighting is switched off and
automatic headlamp mode is activated
( Y
page 130). R
exterior lighting delayed switch-off: the
exterior lighting remains lit for 60 seconds
after the engine is switched off. If you close
all the doors and the tailgate, the exterior
lighting goes off after 15 seconds.
i Depending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the fol-
lowing light up: R
Parking lamps R
Daytime running lamps R
Side marker lamps R
Surround lighting in the exterior mirrors
Activating/deactivating the interior light-
ing delayed switch-off
If you activate the Light. Delay
function,
the interior lighting remains on for
20 seconds after you remove the SmartKey
from the ignition lock. X
Press the Y or e button on the steer-
ing wheel to select the Settings
menu.X
Press the d or c button to select the
Lights
submenu.X
Press v to confirm.X
Press the d or c button to select the
Lighting delayed sw.-off
function.
If the Interior
Lighting Delay function
has been switched on, the vehicle interior is
displayed in orange in the multifunction
display. X
Press the v button to save the setting. Vehicle submenu Activating/deactivating the automatic
door locking mechanism
If you activate the Automatic Door Lock
function, the vehicle is centrally locked above
a speed of approximately 9 mph (15 km/h). X
Press the Y or e button on the steer-
ing wheel to select the Sett
menu.X
Press the d or c button to select the
Vehicle
submenu. X
Press v to confirm. X
Press the d or c button to select the
Automatic Door Lock
function.
When the Automatic
Door Lock function
is activated, the vehicle doors are displayed
in orange in the multifunction display. X
Press the v button to save the setting.
For further information on the automatic lock-
ing feature, see ( Y
page 91).
Activating/deactivating the acoustic
locking verification signal
If you switch on the Acoustic
Lock function,
an acoustic signal sounds when you lock the
vehicle. X
Press the Y or e button on the steer-
ing wheel to select the Sett.
menu.X
Press d or c to select the Vehicle
submenu. X
Press v to confirm. X
Press the d or c button to select the
Acoustic Lock
function.
If the Acoustic
Lock function is activated,
the 7 symbol in the multifunction dis-
play lights up orange. X
Press the v button to save the setting.
Convenience submenu
Activating/deactivating the EASY-
ENTRY/EXIT feature
G WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicleMenus and submenus 285
On-board computer and displays Z

Problem
Possible causes/consequences and P Solutions
I (USA only)
The red electric parking
brake indicator lamp
flashes or lights up
and/or
$
the yellow warning
lamp for the electric
parking brake lights up. X
Observe the additional display messages in the multifunction
display.
u
The red restraint sys-
tem warning lamp is lit
while the engine is run-
ning. The restraint system is faulty.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury. X
Observe the additional display messages in the multifunction
display. X
Drive on carefully. X
Have the restraint system checked immediately at a qualified
specialist workshop.
For further information about the restraint system, see
( Y
page 44).Warning and indicator lamps in the instrument cluster 333
On-board computer and displays Z