sensor MERCEDES-BENZ GLK-CLASS SUV 2015 Owner's Guide

Problems with PARKTRONIC
ProblemPossible causes/consequences and M Solutions
Only the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately five seconds,
and the indicator lamp
in the PARKTRONIC
button lights up.PARKTRONIC has malfunctioned and has switched off.
X If problems persist, have PARKTRONIC checked at a qualified
specialist workshop.
Only the red segments
in the PARKTRONIC
warning displays are lit.
PARKTRONIC is deacti-
vated after approx-
imately five seconds.The PARKTRONIC sensors are dirty or there is interference. X Clean the PARKTRONIC sensors ( Y page 309).
X Switch the ignition back on.
The problem may be caused by an external source of radio or
ultrasound waves. XSee if PARKTRONIC functions in a different location.
Active Parking Assist
Important safety notes
Active Parking Assist is an electronic parking
aid with ultrasound. Ultrasound is used to
measure the road on both sides of the vehicle. A parking symbol indicates a suitable parking
space. Active steering intervention can assist you during parking. You may also use
PARKTRONIC ( Y page 186).
GWARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
result in a collision with another road user.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active Park-
ing Assist parking procedure.
! If unavoidable, you should drive over
obstacles such as curbs slowly and not at a sharp angle. Otherwise, you may damage
the wheels or tires.
Active Parking Assist is merely an aid. It is not
a replacement for your attention to your
immediate surroundings. You are always
responsible for safe maneuvering, parking
and exiting a parking space. Make sure that
no persons, animals or objects are in the
maneuvering range.
When PARKTRONIC is switched off, Active
Parking Assist is also unavailable.
Active Parking Assist may possibly indicate
parking spaces which are not suitable for
parking, for example:
R where parking or stopping is prohibited
R in front of driveways or entrances and exits
R on unsuitable surfaces
Driving systems189
Driving and parking
Z

mittent warning tone twice and the AttenZ
tion Assist: Drowsiness detected mes-
sage appears in the multifunction display.
X If necessary, take a break.
X Press the a button to confirm the mes-
sage.
On long journeys, take regular breaks in good time to allow yourself to rest properly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. The precon-
dition for this is that ATTENTION ASSIST still
detects typical indicators of fatigue or
increasing lapses in concentration.
ATTENTION ASSIST is reset when you con-
tinue your journey and starts assessing your
tiredness again if:
R you switch off the engine.
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break.
The assistance graphic shows the é sym-
bol when ATTENTION ASSIST is deactivated
( Y page 229).
Lane Tracking package
General notes
The Lane Tracking package consists of Blind
Spot Assist ( Y page 203) and Lane Keeping
Assist ( Y page 205).
Blind Spot Assist
General notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It supports you from a speed of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your
attention to vehicles detected in the moni-
tored area. If you then switch on the corre-
sponding turn signal to change lanes, you will also receive a visual and audible collision
warning. Blind Spot Assist uses sensors in the
rear bumper for monitoring purposes. For Blind Spot Assist to assist you, the radar
sensor system must be operational.
Important safety notes
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
GWARNING
Blind Spot Assist does not react to:
R vehicles overtaken too closely on the side,
placing them in the blind spot area
R vehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
iUSA only:
This device has been approved by the FCC as a "Vehicular Radar System". The radar
sensor is intended for use in an automotiveradar system only. Removing, tampering
with, or altering the device will void any
warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
Monitoring range of the sensors
In particular, the detection of obstacles can
be impaired if:
R dirt on the sensors or anything else cover-
ing the sensors
R poor visibility, e.g. due to fog, heavy rain,
snow or spray
R narrow vehicles, e.g. motorcycles or bicy-
cles
R the road has very wide lanes
R the road has narrow lanes
Driving systems203
Driving and parking
Z

Ryou are not driving in the middle of the lane
R there 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 toyour 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 there are vehicles driving at the
inner edge of their lanes.
Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R the warning is canceled when driving for an
extended period next to long vehicles, such
as trucks.
The two radar sensors for Blind Spot Assist
are integrated into the sides of the rear
bumper. Make sure that the bumper is free of dirt, ice or slush in the vicinity of the sensors.
The sensors must not be covered, for exam-
ple by cycle racks or overhanging loads. Fol-
lowing a severe impact or in the event of dam- age to the bumpers, have the function of the
sensors checked at a qualified specialist workshop. Blind Spot Assist may otherwise
not work properly.
Indicator and 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.
:Yellow indicator lamp/red warning lamp
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.
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
204Driving systems
Driving and parking

Active Driving Assistance package
General notes
The Active Driving Assistance package con-
sists of DISTRONIC PLUS ( Y page 176), Active
Blind Spot Assist ( Y page 207) and Active
Lane Keeping Assist ( Y page 210).
Active Blind Spot Assist
General notes
Active Blind Spot Assist uses a radar sensor
system to monitor the side areas of your vehi-
cle which are behind the driver. A warning
display in the exterior mirrors draws your
attention to vehicles detected in the moni-
tored area. If you then switch on the corre-
sponding turn signal to change lane, you will
also receive an optical and audible warning. If
a risk of lateral collision is detected, correc-
tive braking may help you avoid a collision. To
support the course-correcting brake applica-
tion, Active Blind Spot Assist uses the
forward-facing radar sensor system. The free space is then evaluated in the direction of
travel and to the side before a course-cor-
recting brake application is initiated.
Active Blind Spot Assist supports you from a
speed of approximately 20 mph (30 km/h).
For Active Blind Spot Assist to assist you
when driving, the radar sensor system must
be operational.
Important safety notes
Active Blind Spot Assist is only an aid. It doesnot detect all traffic situations and road users
and is no substitute for attentive driving.
Always ensure that there is sufficient dis-
tance to the side for other road users and
obstacles.
GWARNING
Active Blind Spot Assist does not react to:
R vehicles overtaken too closely on the side,
placing them in the blind spot area
R vehicles which approach with a large speed
differential and overtake your vehicle
As a result, Active Blind Spot Assist may nei-
ther give warnings nor intervene in such sit-
uations. There is a risk of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
iUSA only:
This device has been approved by the FCC as a "Vehicular Radar System". The radar
sensor is intended for use in an automotiveradar system only. Removing, tampering
with, or altering the device will void any
warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
iCanada only: This device complies with
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
1. This device may not cause harmful inter-
ference, and
2. this device must accept any interference received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the
device will void any warranties, and is not
permitted. Do not tamper with, alter, or use
in any non-approved way.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
Monitoring range of the sensors
GWARNING
Active Blind Spot Assist does not detect all
traffic situations and road users. There is a
risk of an accident.
Always make sure that there is sufficient dis-
tance on the side for other traffic or obstacles.
Driving systems207
Driving and parking
Z

In particular, the detection of obstacles can
be impaired if:R dirt on the sensors or anything else cover-
ing the sensors
R poor visibility, e.g. due to rain, snow or
spray
Vehicles in the monitoring range are then not
indicated.
Active Blind Spot Assist may not detect nar-
row vehicles, such as motorcycles or bicy-
cles, or may only detect them too late.
Active 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.
For this purpose, Active Blind Spot Assist
uses radar sensors in the rear bumper.
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 there are vehicles driving at the
inner edge of their lanes.
Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R the warning is canceled when driving for an
extended period next to long vehicles, such
as trucks. Two Active Blind Spot Assist radar sensors
are integrated into the front and rear bumpers
respectively. An additional radar sensor is
located behind the cover in the radiator grill.
Make sure that the sensors and areas around
them are free of dirt, ice or slush. The rear
sensors must not be covered, for example by cycle racks or overhanging cargo. Following a
severe impact or in the event of damage to
the bumpers, have the function of the sensors checked at a qualified specialist workshop.
Blind Spot Assist may otherwise not work
properly.
Indicator and warning display
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.
:Yellow indicator lamp/red warning lamp
When Active Blind Spot Assist is activated,
indicator lamp : 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 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).
208Driving systems
Driving and parking

If the Blind Spot Assist Sensors DeacZ
tivated or Act. Blind Spot Asst. SenZ
sors Deactivated message appears, the
radar sensor system is deactivated.
X Switch on the radar sensor system
(Y page 233).
For further information about Blind Spot
Assist, see ( Y page 203).
For further information about Active Blind
Spot Assist, see ( Y page 207).
Activating/deactivating Lane Keeping
Assist
X
Press the = or ; button on the steer-
ing wheel to select the
DriveAssist menu.
X Press the 9 or : button to select
Lane Keep. Asst.
X
Press the a button.
The current selection is displayed.
X Press a to confirm.
X Press the : or 9 button to set
Off,
Standard or Adaptive.
X Press the a button to save the setting.
When Lane Keeping Assist or Active Lane
Keeping Assist is activated, the multifunc-
tion display shows the lane markings as
bright lines in the assistance graphic.
For further information about Lane Keeping
Assist, see ( Y page 205).
For further information about Active Lane
Keeping Assist, see ( Y page 210).
Service menu
Depending on the equipment installed in the
vehicle, you have the following options in the
Serv. menu: R
Calling up display messages
(Y page 235)
R Checking the tire pressure electronically
(Y page 339)
R Calling up the service due date
(Y page 304)
Settings menu
Introduction
Depending on the equipment installed in the
vehicle, In the
Sett. menu you have the fol-
lowing options:
R Changing the instrument cluster settings
(Y page 230)
R Changing the light settings ( Y page 231)
R Changing the vehicle settings
(Y page 232)
R Changing the convenience settings
(Y page 233)
R Restoring the factory settings
(Y page 234)
Instrument cluster
Selecting the unit of measurement for dis-
tance
You can determine whether the multifunction
display shows some messages in miles or
kilometers. X Press the = or ; button on the steer-
ing wheel to select the
Sett. menu.
X Press the : or 9 button to select the
Inst. Cluster submenu.
X Press a to confirm.
230Menus and submenus
On-board computer and displays

XPress a to confirm.
X Press the : or 9 button to select the
Acoustic Lock function.
If the
Acoustic Lock function is activated,
the & symbol in the multifunction dis-
play lights up orange.
X Press the a button to save the setting.
Activating/deactivating the radar sensor
system
X Press the = or ; button on the steer-
ing wheel to select the
Sett. menu.
X Press the : or 9 button to select the
Vehicle submenu.
X Press a to confirm.
X Press the 9 or : button to select
Radar Sensor (See Oper. Manual):.
You will see the selected setting:
Enabled
or Disabled.
X Press the a button to save the setting.
The following systems are switched off when
the radar sensor system is deactivated:
R DISTRONIC PLUS ( Y page 176)
R BAS PLUS ( Y page 69)
R PRE-SAFE ®
Brake ( Y page 73)
R Blind Spot Assist ( Y page 203)
R Active Blind Spot Assist ( Y page 207)
Convenience
Activating/deactivating the EASY-
ENTRY/EXIT feature
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
If somebody becomes trapped:
R press one of the memory function position
buttons, or
R move the switch for steering wheel adjust-
ment in the opposite direction to that in
which the steering wheel is moving.
The adjustment process is stopped.
X Press the = or ; button on the steer-
ing wheel to select the
Sett. menu.
X Press the : or 9 button to select the
Convenience submenu.
X Press a to confirm.
X Press the : or 9 button to select the
Easy Entry/Exit function.
If the
Easy Entry/Exit function is activa-
ted, the vehicle steering wheel is displayed in orange in the multifunction display.
X Press the a button to save the setting.
Further information on the EASY-ENTRY/EXIT
feature ( Y page 108).
Switching the belt adjustment on/off X Press the = or ; button on the steer-
ing wheel to select the
Sett. menu.
X Press the : or 9 button to select the
Convenience submenu.
X Press a to confirm.
X Press the : or 9 button to select the
Belt Adjustment function.
When the
Belt Adjustment function is
activated, the vehicle seat belt is displayed in orange in the multifunction display.
X Press the a button to save the setting.
For further information on belt adjustment,
see ( Y page 59).
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only available in Canada.
This function is only available when the vehi-
cle is equipped with the electrical fold-in func-
tion.
When you switch on the
Auto. Mirror
Folding function, the exterior mirrors are
Menus and submenus233
On-board computer and displays
Z

Display messagesPossible causes/consequences and M Solutions
PRE-SAFE
Functions CurZ
rently Limited See
Operator's Manual
PRE-SAFE®
Brake is temporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiator trim and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display mes-
sage disappears.
PRE

Display messagesPossible causes/consequences and M Solutions
b
Check Left Daytime
Running
Light or Check
Right Daytime RunZ
ning Light
The left or right-hand daytime running lamp is faulty.
X Visit a qualified specialist workshop.
b
Active Light SysZ
tem Inoperative
The active light function is faulty.
X Visit a qualified specialist workshop.
b
Malfunction See
Operator's Manual
The exterior lighting is defective.
X Visit a qualified specialist workshop.
b
Auto Lamp Function
Inoperative
The light sensor is defective.
X Visit a qualified specialist workshop.
b
Switch Off Lights
The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X Turn the light switch to Ã.
Engine
Display messagesPossible causes/consequences and M Solutions
+
Check Coolant
Level See OperaZ
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.
X Add coolant, observing the warning notes before doing so
(Y page 303).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop.
?The fan motor is faulty. XAt coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. drivin g in moun-
tainous terrain, and stop-and-go traffic.
246Display messages
On-board computer and displays

Display messagesPossible causes/consequences and M Solutions
¯
Eng. Start Not PosZ
sible In ..km
The DEF system is malfunctioning. A warning tone also sounds.
X Visit a qualified specialist workshop immediately.
¯
Eng. Start Not PosZ
sible
The DEF system is malfunctioning. A warning tone also sounds.
You can no longer start the engine.
X Consult a qualified specialist workshop immediately.
Driving systems
Display messagesPossible causes/consequences and M Solutions
À
Attention Assist:
Take a Break!
Based on certain criteria, ATTENTION ASSIST has detecte d fatigue
or a lack of concentration on the part of the driver. A warning tone
also sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good tim e so you get
enough rest.
À
Attention Assist
Inoperative
ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop.
ë
Off
The HOLD function is deactivated. The vehicle is skidding.
A warning tone also sounds.
X Reactivate the HOLD function later ( Y page 184).
The HOLD function is deactivated. When the brake pedal i s firmly
depressed, an activation condition is not fulfilled.
A warning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 184).
Radar Sensors DeacZ
tivated See OperaZ
tor's Manual
The radar sensor system is deactivated.
X Switch on the radar sensor system ( Y page 233).
250Display messages
On-board computer and displays