sensor MERCEDES-BENZ GLK-CLASS SUV 2014 Owner's Guide

Problems with PARKTRONIC
Problem Possible causes/consequences and
M
MSolutions Only the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is
deactivated after
approximately 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
deactivated after
approximately 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.
X
See 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 suitable parking space is indicated by the
parking symbol. Active steering intervention
can assist you during parking. You may also
use PARKTRONIC (Y page 185). When
PARKTRONIC is switched off, Active Parking
Assist is also unavailable. G
WARNING
The vehicle swings out when parking and in
doing so could cross into the opposite lane.
This could result in a collision with another
road user. There is a risk of an accident.
Pay attention to other road users when
parking. Stop the vehicle if necessary or cancel the Active Parking 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. When
maneuvering, parking or pulling out of a
parking space, make sure that there are no
persons, animals or objects in the area in
which you are maneuvering. 188
Driving systemsDriving and parking

R
if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving slower
than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
R if you are currently using COMAND or
making a telephone call with it
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display X
Activate ATTENTION ASSIST using the on-
board computer (Y page 229).
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after your
journey has begun. You then hear an
intermittent warning tone twice and the
Attention Assist: Drowsiness
Attention Assist: Drowsiness
detected detected message appears in the
multifunction display.
X If necessary, take a break.
X Press the abutton to confirm the
message.
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
precondition for this is that
ATTENTION ASSIST still detects typical
indicators of fatigue or increasing lapses in
concentration.
ATTENTION ASSIST is reset when you
continue 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
symbol when ATTENTION ASSIST is
deactivated (Y page 228). Lane Tracking package
General notes The Lane Tracking package consists of Blind
Spot Assist (Y
page 202) and Lane Keeping
Assist (Y page 204).
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
monitored area. If you then switch on the
corresponding 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. G
WARNING
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
carefully, and maintain a safe lateral distance.
i USA only:
This device has been approved by the FCC
as a "Vehicular Radar System". The radar 202
Driving systemsDriving and parking

sensor is intended for use in an automotive
radar 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
covering the sensors
R poor visibility, e.g. due to fog, heavy rain,
snow or spray
R narrow vehicles, e.g. motorcycles or
bicycles
R the road has very wide lanes
R the road has narrow lanes
R you 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 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 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
driving 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
example by cycle racks or overhanging loads.
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
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
yellow at speeds of up to 20 mph (30 km/h).
At speeds above 20 mph (30 km/h), the Driving systems
203Driving and parking Z

R
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when
necessary and in good time if you cross the
lane marking, the system recognizes certain
conditions 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
highway.
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.
Towing a trailer
When you attach a trailer, make sure you have
correctly established the electrical
connection. This can be accomplished by
checking the trailer lighting. Active Driving Assistance package
General notes The Active Driving Assistance package
consists of DISTRONIC PLUS (Y page 175),
Active Blind Spot Assist (Y page 206) and
Active Lane Keeping Assist (Y page 209).
Active Blind Spot Assist General notes
Active Blind Spot Assist uses a radar sensor
system to monitor the side areas of your
vehicle which are behind the driver. A warning
display in the exterior mirrors draws your
attention to vehicles detected in the
monitored area. If you then switch on the
corresponding turn signal to change lane, you
will also receive an optical and audible
warning. If a risk of lateral collision is
detected, corrective braking may help you
avoid a collision. To support the course- correcting brake application, 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-correcting 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 does
not detect all traffic situations and road users
and is no substitute for attentive driving.
Always ensure that there is sufficient
distance to the side for other road users and
obstacles. G
WARNING
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
neither give warnings nor intervene in such
situations. There is a risk of an accident.
Always observe the traffic conditions
carefully, and maintain a safe lateral distance.
i USA only:
This device has been approved by the FCC
as a "Vehicular Radar System". The radar
sensor is intended for use in an automotive
radar 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. 206
Driving syste
msDriving and parking

i
Canada 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
interference, 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 G
WARNING
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
distance on the side for other traffic or
obstacles.
In particular, the detection of obstacles can
be impaired if:
R dirt on the sensors or anything else
covering 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
narrow vehicles, such as motorcycles or
bicycles, 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
driving 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. Driving systems
207Driving and parking Z

R
the æ symbol when PRE-SAFE ®
Brake
(Y page 72) is deactivated.
R the è symbol, when the rear window
wiper (Y page 123) is activated.
Activating/deactivating PRE-SAFE ®
Brake PRE-SAFE
®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Press the =or; button on the
steering wheel to select the DriveAssist
DriveAssist
menu.
X Press the 9or: button to select
PRE-SAFE Brake PRE-SAFE Brake .
X Press the abutton.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
When PRE-SAFE ®
Brake is deactivated, the
assistance graphic shows the æsymbol
in the multifunction display.
If the PRE-SAFE Brake: Sensors PRE-SAFE Brake: Sensors
Deactivated
Deactivated message appears, the radar
sensor system is deactivated.
X Switch on the radar sensor system
(Y page 233).
For more information on PRE-SAFE ®
Brake,
see (Y page 72).
Activating/deactivating ATTENTION
ASSIST X
Press the =or; button on the
steering wheel to select the DriveAssist DriveAssist
menu.
X Press the 9or: button to select
Attention Assist
Attention Assist .
X Press the abutton.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
When ATTENTION ASSIST is deactivated,
the é symbol appears in the multifunction display in the assistance
graphics display.
For further information about ATTENTION
ASSIST, see ( Ypage 201).
Activating/deactivating Blind Spot
Assist X
Press the =or; button on the
steering wheel to select the DriveAssist DriveAssist
menu.
X Press the 9or: button to select
Blind Spot Assist
Blind Spot Assist .
X Press the abutton.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
If the Blind Spot Assist Sensors
Blind Spot Assist Sensors
Deactivated
Deactivated orAct. Blind Spot Asst.
Act. Blind Spot Asst.
Sensors Deactivated
Sensors 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 202).
For further information about Active Blind
Spot Assist, see (Y page 206).
Activating/deactivating Lane Keeping
Assist X
Press the =or; button on the
steering wheel to select the DriveAssist DriveAssist
menu.
X Press the 9or: button to select
Lane Keep. Asst.
Lane Keep. Asst.
X Press the abutton.
The current selection is displayed.
X Press ato confirm.
X Press the :or9 button to set Off
Off ,
Standard
Standard orAdaptive
Adaptive .
X Press the abutton to save the setting.
When Lane Keeping Assist or Active Lane
Keeping Assist is activated, the
multifunction display shows the lane Menus and submenus
229On-board computer and displays Z

Activating/deactivating the acoustic
locking verification signal
If you switch on the Acoustic
Acoustic Lock Lockfunction,
an acoustic signal sounds when you lock the
vehicle.
X Press the =or; button on the
steering wheel to select the Sett. Sett.menu.
X Press the :or9 button to select the
Vehicle
Vehicle submenu.
X Press ato confirm.
X Press the :or9 button to select the
Acoustic Lock
Acoustic Lock function.
If the Acoustic
Acoustic Lock
Lockfunction is activated,
the & symbol in the multifunction
display lights up orange.
X Press the abutton to save the setting.
Activating/deactivating the radar sensor
system
X Press the =or; button on the
steering wheel to select the Sett.
Sett. menu.
X Press the :or9 button to select the
Vehicle Vehicle submenu.
X Press ato confirm.
X Press the 9or: button to select
Radar Sensor (See Oper. Manual):
Radar Sensor (See Oper. Manual): .
You will see the selected setting: Enabled
Enabled
or Disabled
Disabled .
X Press the abutton to save the setting.
The following systems are switched off when
the radar sensor system is deactivated:
R DISTRONIC PLUS (Y page 175)
R BAS PLUS (Y page 68)
R PRE-SAFE ®
Brake (Y page 72)
R Blind Spot Assist (Y page 202)
R Active Blind Spot Assist (Y page 206)Convenience Activating/deactivating the EASY-
ENTRY/EXIT feature
G
WARNING
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
making 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
adjustment 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
steering wheel to select the Sett.
Sett. menu.
X Press the :or9 button to select the
Convenience Convenience submenu.
X Press ato confirm.
X Press the :or9 button to select the
Easy Entry/Exit
Easy Entry/Exit function.
If the Easy Entry/Exit
Easy Entry/Exit function is
activated, the vehicle steering wheel is
displayed in orange in the multifunction
display.
X Press the abutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (Y page 105).
Switching the belt adjustment on/off
X Press the =or; button on the
steering wheel to select the Sett. Sett.menu.
X Press the :or9 button to select the
Convenience
Convenience submenu.
X Press ato confirm. Menus and submenus
233On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions PRE-SAFE
PRE-SAFE
Functions Functions
Currently Limited Currently Limited
See Operator's See Operator's
Manual 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 grill 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
stations 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
message disappears.
PRE-SAFE ®
Brake is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Ypage 164).
X Clean the sensors in the radiator grill and the bumper
(Y page 309).
X Restart the engine. PRE-SAFE PRE-SAFE
Functions Limited Functions Limited
See Operator's See Operator's
Manual Manual
PRE-SAFE
®
Brake is inoperative due to a malfunction. BAS PLUS
or the distance warning signal may also have failed.
X Visit a qualified specialist workshop. 6
SRS Malfunction SRS Malfunction
Service Required Service Required There is a malfunction in the SRS (Supplemental Restraint
System). The
6warning lamp also lights up in the instrument
cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
For further information about SRS, see (Y page 43). Display
messages
239On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions b
Check Rear Left Check Rear Left
Sidemarker Sidemarker
Lamp Lamp
orCheck Rear
Check Rear
Right Sidemarker
Right Sidemarker
Lamp Lamp The rear left or right side marker lamp is defective.
X
Visit a qualified specialist workshop. b
Check Check
Left
LeftDaytime
Daytime
Running
Running
Light Light orCheck
Check
Right Daytime
Right Daytime
Running Light Running Light The left-hand or right-hand daytime running lamp is faulty.
X
Visit a qualified specialist workshop. b
Active Headlamps Active Headlamps
Inoperative Inoperative The active light function is defective.
X
Visit a qualified specialist workshop. b
Malfunction See Malfunction See
Operator's Manual Operator's Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. b
Malfunction See Malfunction See
Operator's Manual Operator's Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. b
Auto Auto
Lamp
LampFunction
Function
Inoperative
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop. b
Switch Off Lights 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.246
Display
messagesOn-board computer and displays

Display messages Possible causes/consequences and
M
MSolutions ¯
Eng. Start Not Eng. Start Not
Possible in ..km Possible in ..km The DEF system is malfunctioning. A warning tone also sounds.
X
Visit a qualified specialist workshop immediately. ¯
Eng. Start Not Eng. Start Not
Possible Possible 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 messages Possible causes/consequences and
M MSolutions À
Attention Assist: Attention Assist:
Take a Break! Take a Break! Based on certain criteria, ATTENTION ASSIST has detected 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 time so you get
enough rest. À
Attention Assist Attention Assist
Inoperative Inoperative ATTENTION ASSIST is inoperative.
X
Visit a qualified specialist workshop. ë
Off Off The HOLD function is deactivated. the vehicle is skidding.
A warning tone also sounds.
X
Reactivate the HOLD function later (Y page 183). The HOLD function is deactivated. When the brake pedal is firmly
depressed, an activation condition is not fulfilled.
A warning tone also sounds.
X
Check the activation conditions for the HOLD function
(Y page 183). Radar Sensors Radar Sensors
Deactivated See Deactivated See
Operator's Manual Operator's Manual The radar sensor system is deactivated.
X
Switch on the radar sensor system (Y page 233). Display
messages
251On-board computer and displays Z