sensor MERCEDES-BENZ GLC 2019 User Guide

Crosswind Assist is active at vehicle speedsabove 50 mph(80 km/h)when driving straightahead or cornering gently.
Important safety notes
Crosswind Assist does not work if ESP®isswitched off or deactivated because of a mal-function.
EBD (electronic brake force distribu-
tion)
General information
EBD monitors and controls the brake pressureon the rear wheels to improve driving stabilitywhile braking.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 65).
GWARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the
risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator andwarning lamps (Ypage 259) as well as displaymessages (Ypage 230).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety andoffers increased braking comfort. In addition tothe braking function, ADAPTIVE BRAKE also hasthe HOLD function (Ypage 170) and hill startassist (Ypage 135).
Active Brake Assist with cross-traffic
function
General information
iObserve the important safety notes in the"Driving safety systems" section (Ypage 65).
Active Brake Assist with cross-traffic functioncan help you to minimize the risk of a collisionwith a vehicle in front or a pedestrian and reducethe effects of such a collision. If the Active BrakeAssist with cross-traffic function detects a riskof collision, you will be warned visually andacoustically and, if necessary, your brake appli-cation will be assisted according to the situa-tion. If you do not react, the system can alsoreact by braking automatically. In the event of adetected risk of collision due to crossing traffic,you will also be visually and acoustically warnedas well as assisted by the brake boosting effectaccording to the situation.
Active Brake Assist with cross-traffic function isonly available in vehicles with the Driving Assis-tance Plus package.
For Active Brake Assist with cross-traffic func-tion to assist you when driving, the radar sensorsystem and the camera system must be opera-tional.
If the radar sensor system or the camera systemis malfunctioning, Active Brake Assist withcross-traffic function is restricted or no longeravailable. The brake system is still available withcomplete brake boosting effect and BAS.
The radar sensor system and camera systemhelp Active Brake Assist with cross-traffic func-tion to detect obstacles that are in the path ofyour vehicle for an extended period of time.
In addition, pedestrians in the path of your vehi-cle can be detected.
Active Brake Assist with cross-traffic functiondetects pedestrians using typical characteris-tics such as body contours and the posture of aperson standing upright.
iObserve the restrictions described in the"Important safety notes" section(Ypage 72).
Important safety notes
GWARNING
Active Brake Assist with cross-traffic function
will initially brake your vehicle by a partial
72Driving safety systems
Safety

application of the brakes if a danger of colli-
sion is detected. There may be a collision
unless you brake yourself. Even after subse-
quent full application of the brakes a collision
cannot always be avoided, particularly when
approaching at too high a speed. There is a
risk of an accident.
Always apply the brakes yourself and try to
take evasive action, provided it is safe to do
so.
In the event of a partial application of the brakes,the vehicle is braked with up to 50% of the fullbraking pressure.
GWARNING
Active Brake Assist with cross-traffic function
cannot always clearly identify objects and
complex traffic situations.
In such cases, Active Brake Assist with cross-
traffic function might:
Rissue an unnecessary warning or engage
Rneither give a warning nor intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and be prepared to brake, especially
if Active Brake Assist with cross-traffic func-
tion alerts you. Terminate the intervention in a
non-critical driving situation.
GWARNING
Active Brake Assist with cross-traffic function
cannot always clearly identify people, partic-
ularly if they are moving. Active Brake Assist
with cross-traffic function cannot intervene in
these cases. There is a risk of an accident.
Always pay particular attention to the traffic
situation and be prepared to brake, especially
if Active Brake Assist with cross-traffic func-
tion alerts you.
In order to maintain the appropriate distance tothe vehicle in front and thus prevent a collision,you must apply the brakes yourself.
GWARNING
Active Brake Assist with cross-traffic function
does not react:
Rto small people, e.g. children
Rto animals
Rto oncoming vehicles
Rwhen cornering
As a result, Active Brake Assist with cross-
traffic function may not warn you or engage in
all critical situations. There is a risk of an acci-
dent.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
In the event of snowfall or heavy rain, the rec-ognition can be impaired.
Recognition by the radar sensor system is alsoimpaired if:
Rthere is dirt on the sensors or anything elsecovering the sensors
Rthere is interference by other radar sources
Rthere are strong radar reflections, for exam-ple in parking garages
Ra narrow vehicle is traveling in front, e.g. amotorbike
Ra vehicle is traveling in front on a different line
Rvehicles moving quickly into the radar sensorsystem detection range
Recognition by the camera system is alsoimpaired in the event of:
Rdirt on the camera or if the camera is covered
Rglare on the camera system, e.g. from the sunbeing low in the sky
Rdarkness
Ror if:
-pedestrians move quickly, e.g. into the pathof the vehicle
-the camera system no longer recognizes apedestrian as a person due to special cloth-ing or other objects
-a pedestrian is concealed by other objects
-the typical outline of a pedestrian is notdistinguishable from the background
Following damage to the front end of the vehicle,have the configuration and operation of theradar sensors checked at a qualified specialistworkshop. This also applies to collisions at slow
Driving safety systems73
Safety
Z

multimedia system; see the Digital Operator'sManual.
You will receive visual and acoustic locking con-firmation if all components were able to belocked.
When the locator lighting is activated via themultimedia system, it lights up when it is darkafter the vehicle is unlocked with the SmartKey;see the Digital Operator's Manual.
XTo open the tailgate automatically fromoutside the vehicle:press and hold theTbutton until the tailgate opens.
XTo close the tailgate automatically fromoutside the vehicle:if the SmartKey is loca-ted in the immediate vicinity of the vehicle,press theTbutton on the SmartKey.When the tailgate closes you can then releasethe button.
KEYLESS-GO
General notes
Bear in mind that the engine can be started byany of the vehicle occupants if there is a Smart-Key in the vehicle (Ypage 133).
Locking/unlocking centrally
You can start, lock or unlock the vehicle usingKEYLESS-GO. To do this, you only need carry theSmartKey with you. You can combine the func-tions of KEYLESS-GO with those of a conven-tional SmartKey. Unlock the vehicle by usingKEYLESS-GO, for instance, and lock it using the7button on the SmartKey.
The driver's door and the door at which the han-dle is used, must both be closed. The SmartKeymust be outside the vehicle. When locking orunlocking with KEYLESS-GO, the distancebetween the SmartKey and the correspondingdoor handle must not be greater than 3 ft (1 m).
A brief radio connection between the vehicleand the SmartKey determines whether a validSmartKey is in, or in the direct vicinity of, thevehicle. This occurs, for example:
Rwhen starting the engine
Rwhile driving
Rwhen using HANDS-FREE ACCESS
Rwhen the external door handles are touched
Rduring convenience closing
XTo unlock the vehicle:touch the inner sur-face of the door handle.
XTo lock the vehicle:touch sensor surfaceCorD.
Make sure that you do not touch the innersurface of the door handle.
XConvenience closing feature:touchrecessed sensor surfaceDfor an extendedperiod.
Further information on the convenience clos-ing feature (Ypage 91).
XTo unlock the tailgate:push the top of staron the tailgate.
Deactivating and activating
If you do not intend to use a SmartKey for anextended period of time, you can deactivate theKEYLESS-GO function of the SmartKey. TheSmartKey will then use very little power, therebyconserving battery power. For the purposes ofactivation/deactivation, the vehicle must not benearby.
XTo deactivate:press the7button on theSmartKey twice in rapid succession.The battery check lamp (Ypage 80) of theSmartKey flashes twice briefly and lights uponce, then KEYLESS-GO is deactivated.
XTo activate:press any button on the Smart-Key.
or
XInsert the SmartKey into the ignition lock.KEYLESS-GO and all of its associated featuresare available again.
78SmartKey
Opening and closing

KEYLESS-GO start function
General notes
Bear in mind that the engine can be started byany of the vehicle occupants if there is a Smart-Key in the vehicle (Ypage 133).
Changing the settings of the locking
system
You can change the settings of the locking sys-tem. This means that only the driver's door andthe fuel filler flap are unlocked when the vehicleis unlocked. This is useful if you frequently travelalone.
XTo change the setting:press and hold downthe6and7buttons simultaneouslyfor approximately six seconds until the bat-tery check lamp (Ypage 80) flashes twice.
If the setting of the locking system is changedwithin the signal range of the vehicle, pressingthe7or6button:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock:press the6button once.
XTo unlock centrally:press the6buttontwice.
XTo lock:press the7button.
XTo restore the factory settings:press andhold the6and7buttons simultane-ously for approximately six seconds until thebattery check lamp (Ypage 80) flashestwice.
The KEYLESS-GO functions can be changed asfollows:
XTo unlock the driver's door:touch the innersurface of the door handle on the driver'sdoor.
XTo unlock centrally:touch the inner surfaceof the door handle on the front-passengerdoor or the rear door.
XTo lock centrally:touch the outer sensorsurface on one of the door handles.
Mechanical key
General notes
If the vehicle can no longer be locked orunlocked with the SmartKey or KEYLESS-GO,use the mechanical key.
If you use the mechanical key to unlock andopen the driver's door, the anti-theft alarm sys-tem will be triggered. Switch off the alarm(Ypage 75).
If you unlock the vehicle using the mechanicalkey, the fuel filler flap will not be unlocked auto-matically.
XTo unlock the fuel filler flap:insert theSmartKey into the ignition lock.
Removing the mechanical key
XPush release catchCin the direction of thearrow and at the same time remove mechan-ical keyDfrom the SmartKey.
For further information about:
RLocking/unlocking the driver's door(Ypage 84)
RUnlocking the tailgate (Ypage 89)
Inserting the mechanical key
XPush mechanical keyDcompletely into theSmartKey until it engages and releasecatchCis back in its basic position.
SmartKey79
Opening and closing
Z

If KEYLESS-GO detects a SmartKey in the cargocompartment before the closing procedurestarts, the tailgate remains open.
HANDS-FREE ACCESS
General notes
With KEYLESS-GO and HANDS-FREE ACCESS,you can open or close the tailgate or stop theprocedure without using your hands. This is use-ful if you have your hands full. To do this, makea kicking movement under the bumper with yourfoot.
Observe the following points:
RCarry your KEYLESS-GO key about your per-son. The SmartKey must be at the rear of thevehicle in the detection range of KEYLESS-GO.
RWhen making the kicking movement, makesure that you are standing firmly on theground and that there is sufficient clearanceto the rear of the vehicle. You could otherwiselose your balance, for example on ice.
RAlways ensure that you only make the kickingmovement within the detection range of sen-sorsC.
RStand at least 12 in (30 cm) away from therear area while doing so.
RDo not come into contact with the bumperwhile making the kicking movement. Other-wise, the sensors may not function correctly.
RHANDS-FREE ACCESS does not function dur-ing engine start.
RDirt caused by road salt or snow around sen-sorsCmay restrict functionality.
Using the HANDS-FREE ACCESS with a pros-thetic leg may restrict functionality.
RIf a KEYLESS-GO key is at the rear of the vehi-cle in the detection range of KEYLESS-GO,HANDS-FREE ACCESS could be triggered.The tailgate could thus be opened or closedunintentionally, for example, if you:
-install or remove the ball coupling.
-couple or uncouple a trailer.
-install or remove a rear-mounted bicyclerack.
-load/unload bicycles on/from a rear-mounted bicycle rack.
-sit on the edge of the cargo compartment.
-set something down or lift something upbehind the vehicle.
-polish the rear of the vehicle.
Do not carry the KEYLESS-GO key about yourperson in these situations or in situations sim-ilar to these. This will prevent unintentionalopening or closing of the tailgate.
Important safety notes
GWARNING
The vehicle exhaust system can become very
hot. If you use HANDS-FREE ACCESS, you
could burn yourself by touching the exhaust
system. There is a risk of injury. Always
ensure that you make the kicking movement
only within the detection range of the sensors.
!If the SmartKey is within the rear detectionrange of KEYLESS-GO, the following situa-tions, for example, could lead to the uninten-tional opening of the tailgate:
Rwhen using an automatic car wash
Rwhen using a power washer
Make sure that the SmartKey is at least 10 ft(3 m) away from the vehicle.
Cargo compartment87
Opening and closing
Z

Operation
XTo open or close:kick with your foot intosensor detection rangeCbeneath thebumper.Two warning tones sound while the tailgate isopening or closing.
XIf the tailgate does not open or close afterseveral attempts:wait at least ten secondsthen kick under the bumper once again.
If you hold your foot under the bumper for toolong, the tailgate does not open or close. Repeatthe leg movement more quickly if this occurs.
To stop the opening or closing procedure, youhave the following options:
RKick with your foot into sensor detectionrangeCbeneath the bumper.
RPress the top of the star on the tailgate.
RPress the closing button on the tailgate.
RPress theTbutton on the SmartKey.
If the tailgate closing procedure has been stop-ped:
RMove your foot under the bumper again andthe tailgate will open.
If the tailgate opening procedure has been stop-ped:
RKick with your foot under the bumper againand the tailgate will close.
Opening/closing automatically from
inside
Important safety notes
GDANGER
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the tail-
gate is open while the engine is running, espe-
cially if the vehicle is in motion. There is a risk
of poisoning.
Always switch off the engine before opening
the tailgate. Never drive with the tailgate
open.
GWARNING
Parts of the body could become trapped dur-
ing automatic closing of the tailgate. In addi-
tion, people may be standing in the closing
area or may enter the closing area, e.g. chil-
dren, during the closing procedure. There is a
risk of injury.
Make sure that nobody is in the vicinity of the
closing area during the closing process.
Release the remote operating switch imme-
diately if somebody becomes trapped. To re-
open the tailgate pull on the remote operating
switch.
Vehicles with HANDS-FREE ACCESS:
You can also stop the closing process by per-forming a kicking movement under the rearbumper.
!The tailgate swings upwards and to the rearwhen opened. Therefore, make sure thatthere is sufficient clearance above and behindthe tailgate.
Two warning tones sound while the tailgate isopening or closing.
The opening dimensions of the tailgate can befound in the "Vehicle data" section(Ypage 363).
Opening and closing
88Cargo compartment
Opening and closing

You can continue to operate the side windowsafter you switch off the engine or remove theSmartKey. This function remains active for fiveminutes or until you open a front door.
When the override feature for the side windowsis activated, the side windows cannot be oper-ated from the rear (Ypage 64).
Information on opening and closing the rollersunblinds on the rear side windows(Ypage 290).
Convenience opening
General notes
If the SmartKey is in close proximity to the vehi-cle, the convenience opening function is availa-ble.
Vehicles with KEYLESS-GO or KEYLESS-GOstart function:you can ventilate the vehiclebefore you start driving.
To do this, the SmartKey is used to carry out thefollowing functions simultaneously:
Runlock the vehicle
Ropen the side windows
Ropen the sliding sunroof
Rswitch on the seat ventilation for the driver'sseat
The "convenience opening" feature is also avail-able when the vehicle is unlocked.
Convenience opening
XPress and hold the6button on the Smart-Key until the sliding sunroof is in the desiredposition.
XTo interrupt convenience opening:releasethe6button.
Convenience closing feature
Important safety notes
GWARNING
When the convenience closing feature is oper-
ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure.
Vehicles with KEYLESS-GO or KEYLESS-GOstart function:if the SmartKey is in close prox-imity to the vehicle, the convenience closingfunction is available.
When you lock the vehicle, you can simultane-ously:
Rclose the side windows
Rclose the sliding sunroof
Notes on the automatic reversing feature for:
Rthe side windows (Ypage 90)
Rthe sliding sunroof (Ypage 93)
Using the SmartKey
XPress and hold the7button until the sidewindows and the sliding sunroof are fullyclosed.
XMake sure that all the side windows and thesliding sunroof are closed.
XTo interrupt convenience closing:releasethe7button.
Using KEYLESS-GO
The driver's door and the door at which the han-dle is used, must both be closed. The SmartKeymust be outside the vehicle. The gap betweenthe SmartKey and the corresponding door han-dle should not be greater than 3 ft (1 m).
XTouch recessed sensor surfaceCon thedoor handle until the side windows and thesliding sunroof are fully closed.
Side windows91
Opening and closing
Z

Make sure you only touch recessed sensorsurfaceC.
XMake sure that all the side windows and thesliding sunroof are closed.
XTo interrupt convenience closing:releaserecessed sensor surfaceCon the door han-dle.
Resetting the side windows
If a side window can no longer be closed fully,you must reset it.
XClose all the doors.
XTurn the SmartKey to positionGorHin theignition lock.
XPull the corresponding switch on the doorcontrol panel until the side window is com-pletely closed (Ypage 90).
XHold the switch for an additional second.
If the side window opens again slightly:
XImmediately pull the corresponding switch onthe door control panel until the side window iscompletely closed (Ypage 90).
XHold the switch for an additional second.
XIf the respective side window remains closedafter the button is released, then it has beenset correctly. If this is not the case, repeat thesteps above.
Problems with the side windows
GWARNING
If you close a side window again immediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing feature is then not active. Parts of the
body could be trapped in the closing area in the process. This poses an increased risk of injury or
even fatal injury.
Make sure that no parts of the body are in the closing area. To stop the closing process, release
the switch or push the switch again to reopen the side window.
ProblemPossible causes/consequences andPPSolutions
A side window cannot beclosed because it isblocked by objects, e.g.leaves in the windowguide.
XRemove the objects.
XClose the side window.
A side window cannot beclosed and you cannotsee the cause.
If a side window is obstructed during closing and reopens againslightly:
XImmediately after the window blocks, pull the corresponding switchagain until the side window has closed.The side window is closed with increased force.
If a side window is obstructed again during closing and reopens againslightly:
XImmediately after the window blocks, pull the corresponding switchagain until the side window has closed.The side windows are closed without the automatic reversing fea-ture.
92Side windows
Opening and closing

Exterior lighting
General notes
USA only: if you wish to drive during the daytimewithout lights, switch off theDaytime Run‐Daytime Run‐ning Lightsning Lightsfunction via the on-board com-puter (Ypage 222).
Setting the exterior lighting
Setting options
Exterior lighting can be set using the:
Rlight switch (Ypage 109)
Rcombination switch (Ypage 110)
Ron-board computer (Ypage 222)
Light switch
Operation
GcLeft-hand standing lamps
HdRight-hand standing lamps
I`Parking lamps, license plate andinstrument cluster lighting
JXAutomatic headlamp mode, controlledby the light sensor
KXLow-beam/high-beam headlamps

When the engine is running and the vehicle isstationary: if you move the selector lever from adriving position to], the daytime driving lightsand low-beam headlamps go out after threeminutes.
When the engine is running, the vehicle is sta-tionary and in bright ambient light: if you turn thelight switch to the`position, the daytimerunning lamps and parking lamps switch on.
If the engine is running and you turn the lightswitch to theXposition, the manual settingstake precedence over the daytime runninglamps.
Low-beam headlamps
GWARNING
When the light switch is set toX, the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
X.
Even if the light sensor does not detect that it isdark, the parking lamps and low-beam head-lamps switch on when the ignition is switched onand the light switch is set to theXposition.This is a particularly useful function in the eventof rain and fog.
XTo switch on the low-beam headlamps:turn the SmartKey to positionHin the igni-tion lock or start the engine.
XTurn the light switch to theXposition.The greenXindicator lamp in the instru-ment cluster lights up.
Rear fog lamp
The rear fog lamp improves visibility of yourvehicle for the traffic behind in the event of thickfog. You must observe the legal requirementsfor the country in which you are currently drivingwhen operating the rear fog lamp.
XTo switch on the rear fog lamp:turn theSmartKey in the ignition lock to positionHorstart the engine.
XTurn the light switch to theXorXposition.
XPress the^button.The yellow^indicator lamp on the instru-ment cluster lights up.
Parking lamps
!If the battery charge is very low, the parkinglamps or standing lamps are automaticallyswitched off to enable the next engine start.Always park your vehicle safely and in a well litarea, in accordance with the relevant legalstipulations. Avoid using the`parkinglamps over a period of several hours. If pos-sible, switch on the right-handdor left-handcstanding lamps.
XTo switch on the parking lamps:turn thelight switch to the`position.The green`indicator lamp on the instru-ment cluster lights up.
Standing lamps
Switching on the standing lamps ensures thecorresponding side of the vehicle is illuminated.
XTo switch on the parking lamp:turn theSmartKey to positionZin the ignition lock orremove the SmartKey.
XTurn the light switch to thec(left-handside of the vehicle) ord(right-hand side ofthe vehicle) position.
Combination switch
CHigh-beam headlamps
DTurn signal, right
110Exterior lighting
Lights and windshield wipers