2019 MERCEDES-BENZ GLC sensor

possible deceleration. If this deceleration is
not sufficient, Active Distance Assist
DISTRONIC alerts you with a visual and acous-
tic warning. There is a risk of an accident.
Adjust your speed in these cases and main-
tain sufficient distance. Apply the brakes
yourself and try to take evasive action.
!When Active Distance Assist DISTRONIC orthe HOLD function is activated, the vehiclebrakes automatically in certain situations.
To avoid damage to the vehicle, deactivateActive Distance Assist DISTRONIC and theHOLD function in the following or similar sit-uations:
Rwhen towing the vehicle
Rin the car wash
Active Distance Assist DISTRONIC can neitherreduce the risk of an accident if you fail to adaptyour driving style, nor override the laws of phys-ics. Active Distance Assist DISTRONIC cannottake into account road, weather or traffic con-ditions. Active Distance Assist DISTRONIC isonly an aid. You are responsible for maintaininga safe distance to the vehicle in front, for vehiclespeed, for braking in good time and for staying inlane.
Do not use Active Distance Assist DISTRONIC:
RIn road and traffic conditions which do notallow you to maintain a constant speed, e.g. inheavy traffic or on winding roads
ROn slippery road surfaces. Braking or accel-erating could cause the drive wheels to losetraction and the vehicle could then skid
RIn poor visibility, e.g. due to fog, heavy rain orsnow
Active Distance Assist DISTRONIC may notdetect narrow vehicles driving in front, e.g.motorcycles, or vehicles driving in a staggeredformation.
In particular, the detection of obstacles can beimpaired if:
RThere is dirt on the sensors or anything elsecovering the sensors
RThere is snow or heavy rain
RThere is interference by other radar sources
RThere are strong radar reflections, for exam-ple in parking garages
If Active Distance Assist DISTRONIC no longerdetects a vehicle in front, Distance Pilot
DISTRONIC may unexpectedly accelerate to thespeed stored.
This speed may:
RBe too high if you are driving in a turning laneor an exit lane
Rbe so high in the right lane that you pass vehi-cles driving on the left (in countries wherethey drive on the right)
Rbe so high in the left lane that you pass vehi-cles driving on the right (in countries wherethey drive on the left)
If there is a change of drivers, advise the newdriver of the speed stored.
Cruise control lever
CActivates or increases speed
DActivates or reduces speed

Parking Assist PARKTRONIC is only an aid. It isnot a replacement for your attention to yourimmediate surroundings. You are alwaysresponsible for safe maneuvering, parking andexiting a parking space. Make sure that thereare no persons, animals or objects in the maneu-vering area while maneuvering and parking in/leaving parking spaces.
!When parking, pay particular attention toobjects above or below the sensors, such asflower pots or trailer drawbars. Parking AssistPARKTRONIC does not detect such objectswhen they are in the immediate vicinity of thevehicle. You could damage the vehicle or theobjects.
The sensors may not detect snow and otherobjects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic carwash, the compressed-air brakes of a truck ora pneumatic drill could cause Parking AssistPARKTRONIC to malfunction.
Parking Assist PARKTRONIC may not functioncorrectly on uneven terrain.
!If you do not need the trailer tow hitch,remove the detachable ball coupling. ParkingAssist PARKTRONIC measures the minimumdetection range to an obstacle from thebumper, not the ball coupling.
Parking Assist PARKTRONIC is activated auto-matically when you:
Rswitch on the ignition
Rshift the transmission to position[,^or\\
Parking Assist PARKTRONIC is deactivated atspeeds above 11 mph (18 km/h). It is reactiva-ted at lower speeds.
Parking Assist PARKTRONIC is deactivated forthe rear area when you establish an electricalconnection between your vehicle and a trailer.
Range of the sensors
Parking Assist PARKTRONIC does not take intoaccount obstacles located:
Rbelow the detection range, such as persons,animals or objects
Rabove the detection range, e.g. overhangingloads, tail sections or loading ramps of trucks
CSensors in the front bumper, left-hand side(example)
CApprox. 24 in (approx. 60 cm) (corners)
DApprox. 32 in (approx. 80 cm) (corners)

Problems with Parking Assist PARKTRONIC
ProblemPossible causes/consequences andPPSolutions
Only the red segments inthe Parking AssistPARKTRONIC warningdisplays are lit. You alsohear a warning tone forapproximately two sec-onds.
Parking AssistPARKTRONIC is thendeactivated and the indi-cator lamp on thePARKTRONIC buttonlights up.
Parking Assist PARKTRONIC has malfunctioned and has been deacti-vated.
XIf problems persist, have Parking Assist PARKTRONIC checked at aqualified specialist workshop.
Only the red segments inthe Parking AssistPARKTRONIC warningdisplays are lit. ParkingAssist PARKTRONIC isthen deactivated.
The Parking Assist PARKTRONIC sensors are dirty or there is inter-ference.
XClean the Parking Assist PARKTRONIC sensors (Ypage 309).
XSwitch the ignition back on.
The problem may be caused by an external source of radio or ultra-sound waves.
XCheck to see if Parking Assist PARKTRONIC works at a differentlocation.
Rear view camera
General notes
Rear view cameraCis an optical parking andmaneuvering aid. It shows the area behind thevehicle with guide lines in the multimedia sys-tem.
The area behind the vehicle is displayed as amirror image, as in the rear view mirror.
iThe text shown in the multimedia systemdepends on the language setting. The follow-
ing are examples of rear view camera displaysin the multimedia system.
Important safety notes
The rear view camera is only an aid. It is not areplacement for your attention to your immedi-ate surroundings. You are always responsiblefor safe maneuvering and parking. Make surethat there are no persons, animals or objects inthe maneuvering area while maneuvering andparking in parking spaces.
Under the following circumstances, the rearview camera will not function, or will function ina limited manner:
Rif the tailgate is open
Rin heavy rain, snow or fog
Rat night or in very dark places
Rif the camera is exposed to very bright light
Rif the area is lit by fluorescent bulbs or LEDlighting (the display may flicker)
182Driving systems
Driving and parking

sors. A warning lamp lights up in the exteriormirrors and draws your attention to vehiclesdetected in the monitored area. If you thenswitch on the corresponding turn signal tochange lanes, you will also receive a visual warn-ing and a warning tone.
Blind Spot Assist supports you from a speed ofapproximately 20 mph (30 km/h).
Important safety notes
GWARNING
Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles 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.
Blind Spot Assist is only an aid. It may fail todetect some vehicles and is no substitute forattentive driving. Always ensure that there issufficient distance to the side for other roadusers and obstacles.
iUSA only:
This device has been approved by the FCC asa "Vehicular Radar System". The radar sensoris intended for use in an automotive radarsystem only. Removing, tampering with, oraltering the device will void any warranties,and is not permitted by the FCC. Do not tam-per with, alter, or use in any non-approvedway.
Any unauthorized modification to this devicecould void the user's authority to operate theequipment.
Radar sensors
The radar sensors for Blind Spot Assist are inte-grated into the rear bumper. Make sure that thebumpers are free from dirt, ice or slush. Thesensors must not be covered, for example bycycle racks or overhanging loads. Following asevere impact or in the event of damage to thebumpers, have the function of the radar sensorschecked at a qualified specialist workshop.Blind Spot Assist may no longer work properly.
Monitoring area
In particular, the detection of obstacles can beimpaired if:
RThere is dirt on the sensors or anything elsecovering the sensors
Rthere is poor visibility, e.g. due to fog, heavyrain, snow or spray
Rthere are narrow vehicles, e.g. motorcycles orbicycles
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 other road boundaries
Vehicles in the monitoring range are then notindicated.
At a distance of around 1.6 ft (0.5 m)Dfrom thevehicle, Blind Spot Assist monitors the area upto 10 ft (3 m) next to

Ryou switch on the turn signals. In this event,the warnings are suppressed for a certainperiod of time.
Ra driving safety system intervenes, e.g. ABS,
BAS or ESP®.
Adaptive
WhenAdaptiveAdaptiveis selected, no warning vibra-tion occurs if:
Ryou switch on the turn signals. In this event,the warnings are suppressed for a certainperiod of time.
Ra driving safety system intervenes, e.g. ABS,
BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid anobstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when neces-sary and in good time if you cross the lane mark-ing, the system detects certain conditions andwarns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on abend
Rthe road has very wide lanes, e.g. a freeway
Rthe system detects solid lane markings
The warning vibration occurs later if:
Rthe road has narrow lanes
Ryou cut the corner on a bend
Driving Assistance Plus package
General notes
The Driving Assistance Plus Package consists ofActive Distance Assist DISTRONIC(Ypage 162), Active Blind Spot Assist(Ypage 197) and Active Lane Keeping Assist(Ypage 200).
Active Blind Spot Assist
General notes
Active Blind Spot Assist monitors the areas oneither side of the vehicle that are not visible tothe driver with two lateral, rear-facing radar sen-sors. A warning lamp lights up in the exteriormirrors and draws your attention to vehicles
detected in the monitored area. If you thenswitch on the corresponding turn signal tochange lanes, you will also receive a visual warn-ing and hear a warning tone. If a risk of lateralcollision is detected, corrective braking mayhelp you avoid a collision. Before a course-cor-recting brake application, Active Blind SpotAssist evaluates the space in the direction oftravel and at the sides of the vehicle. For this,Active Blind Spot Assist uses the forward-facingradar sensors.
Active Blind Spot Assist supports you from aspeed of approximately 20 mph(30 km/h).
Important safety notes
Active Blind Spot Assist is only an aid and is nota substitute for attentive driving.
GWARNING
Active Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles 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 bythe FCC as a "Vehicular Radar System". Theradar sensor is intended for use in an auto-motive radar system only. Removal, tamper-ing, or altering of the device will void any war-ranties, and is not permitted by the FCC. Donot tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operate theequipment.
iCanada only: This device complies withRSS-210 of Industry Canada. Operation issubject to the following two conditions:
1. This device may not cause interference,and
2. This device must accept any interferencereceived, including interference that maycause undesired operation of the device.
Removal, tampering, or altering of the devicewill void any warranties, and is not permitted.
Driving systems197
Driving and pa rking
Z

Do not tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operate theequipment.
Radar sensors
The Active Blind Spot Assist radar sensors areintegrated into the front and rear bumpers andbehind a cover in the radiator trim. Make surethat the bumpers and the cover in the radiatorgrill are free of dirt, ice or slush. The rear sensorsmust not be covered, for example by cycle racksor overhanging loads. Following a severe impactor in the event of damage to the bumpers, havethe function of the radar sensors checked at aqualified specialist workshop. Active Blind SpotAssist may otherwise no longer work properly.
Monitoring area
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.
At a distance of approximately 1.6 ft (0.5m)Dfrom the vehicle, Active Blind Spot Assist mon-itors the area up to 10 ft (3 m) next to

TowingTowingaaTrailerTrailerSeeSeeOperator'sOperator'sManualManualmessage appears in the multifunction display.
Active Lane Keeping Assist
General notes
Active Lane Keeping Assist monitors the area infront of your vehicle by means of multifunctioncameraCat the top of the windshield. Variousdifferent areas to the front, rear and side of yourvehicle are also monitored with the aid of theradar sensor system. Active Lane KeepingAssist detects lane markings on the road andcan warn you before you leave your lane unin-tentionally. If you do not react to the warning, alane-correcting application of the brakes canbring the vehicle back into the original lane.
This function is available in the range between40 mph and 120 mph (60 km/h and 200 km/h).
Important safety notes
If you fail to adapt your driving style, Active LaneKeeping Assist can neither reduce the risk of anaccident nor override the laws of physics. ActiveLane Keeping Assist cannot take account ofroad and weather conditions. It may not recog-nize traffic situations. Active Lane KeepingAssist is only an aid. You are responsible for thedistance to the vehicle in front, for vehiclespeed, for braking in good time and for staying inyour lane.
Active Lane Keeping Assist cannot continuouslykeep your vehicle in its lane.
GWARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
Rgive an unnecessary warning and then
make a course-correcting brake application
Rneither give a warning nor 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 functionif:
Rthere is poor visibility, e.g. due to insufficientillumination of the road, or due to snow, rain,fog or heavy spray
Rthere is glare, e.g. from oncoming traffic, thesun or reflection from other vehicles (e.g. ifthe road surface is wet)
Rthe windshield is dirty, fogged up, damaged orcovered, for instance by a sticker, in the vicin-ity of the camera
Rthe radar sensors in the front or rear bumpersor the radiator trim are dirty, e.g. obscured bysnow
Rthere are no or several unclear lane markingsfor one lane, e.g. roadworks
Rthe lane markings are worn away, dark or cov-ered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too shortand thus the lane markings cannot be detec-ted
Rthe lane markings change quickly, e.g. lanesbranch off, cross one another or merge
Rthe road is narrow and winding
Rthere are highly variable shade conditions onthe roadway
If no vehicle is detected in the adjacent lane andbroken lane markings are detected, no lane-cor-recting brake application is made.
Warning vibration in the steering wheel
A warning may be given if a front wheel passesover a lane marking. It will warn you by means ofintermittent vibration in the steering wheel forup to 1.5 seconds.
200Driving systems
Driving and parking

Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle when driving, you may be distracted from
the traffic situation. You could also lose con-
trol of the vehicle. There is a risk of an acci-
dent.
Only operate this 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 thecountry in which you are currently driving whenoperating 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 isimpaired, pull over as soon as it is safe to do so.Contact a qualified specialist workshop.
The on-board computer only shows messages orwarnings from certain systems in the multifunc-tion display. You should therefore make sureyour vehicle is operating safely at all times.
For an overview, see the instrument panel illus-tration (Ypage 36).
Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the dis-plays and the controls in the vehicle interior canbe adjusted using brightness control knobC.
XTurn brightness control knobCup or down.If you turn the light switch (Ypage 109) to the`,XorXposition, the brightnesswill depend upon the brightness of the ambi-ent light.
iThe light sensor in the instrument clusterautomatically controls the brightness of themultifunction display.
In daylight, the displays in the instrumentcluster are illuminated. A dimming function isnot possible in daylight.
Speedometer with segments
The speedometer is divided into segmentsdepending on the equipment.
The segments in the speedometer indicatewhich speed range is available.
RCruise control activated (Ypage 160):
The segments light up from the stored speedto the end of the scale.
RActive Distance Assist DISTRONIC activated(Ypage 164):
One or two segments in the set speed rangelight up.
RActive Distance Assist DISTRONIC detects avehicle in front moving more slowly than thestored speed:
The segments between the speed of the vehi-cle in front and the stored speed light up.
208Displays and operation
On-board computer and displays