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
Activating Active Distance Assist
DISTRONIC
Activation conditions
To activate Active Distance Assist DISTRONIC,the following conditions must be fulfilled:
Rthe engine must be started. It may take up totwo minutes of driving before Active DistanceAssist DISTRONIC is ready for use.
Rthe electric parking brake must be released.
RESP®must be activated, but not interveningat present.
RParking Pilot must not be activated.
Rthe transmission must be in position [.
Rthe driver's door must be closed when youshift the transmission from position ]to [or your seat belt must be fastened.
Rthe front-passenger door and rear doors mustbe closed.
Rthe vehicle must not slide.
Activating
XBriefly pull the cruise control lever towardsyou
If Active Distance Assist DISTRONIC detects afaster-moving vehicle in front, it increases thedriving speed to the set speed.
Selecting the drive program
Active Distance Assist DISTRONIC supports asporty driving style when you have selected theSorS+, drive program (Ypage 145). Accelera-tion behind the vehicle in front or to the setspeed is then noticeably more dynamic. If youhave selected theCorEdriving program, thevehicle accelerates more gently. This setting isrecommended in stop-and-start traffic.
Changing lanes
If you change to the overtaking lane Active Dis-tance Assist DISTRONIC supports you if:
Ryou are driving faster than 45 mph (70 km/h)
Ryou switch on the appropriate turn signal
RActive Distance Assist DISTRONIC does notcurrently detect a danger of collision
If these conditions are fulfilled, your vehicle isaccelerated. Acceleration will be interrupted ifchanging lanes takes too long or if the distancebetween your vehicle and the vehicle in frontbecomes too small.
When you change lanes, Active Distance AssistDISTRONIC monitors the left lane on left-hand-drive vehicles or the right lane on right-hand-drive vehicles.
Stopping
GWARNING
If you leave the driver's seat when the vehicle
is only being braked by Active Distance Assist
DISTRONIC, it could roll away:
Rif there is a malfunction in the system or in
the voltage supply
Rif Active Distance Assist DISTRONIC is
deactivated using the cruise control lever,
for example by a vehicle occupant or from
outside the vehicle
Rif the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with
Rif the battery is disconnected
Rif the vehicle is accelerated, e.g. by a vehi-
cle occupant
There is a risk of an accident.
Always deactivate Active Distance Assist
DISTRONIC and secure the vehicle against
rolling away before you leave it.
Further information on deactivating Active Dis-tance Assist DISTRONIC (Ypage 167).
If Active Distance Assist DISTRONIC detectsthat the vehicle in front is stopping, it brakesyour vehicle until it is stationary.
Once your vehicle is stationary, it remains sta-tionary and you do not need to depress thebrake.
After a time, the electric parking brake securesthe vehicle and relieves the service brake.
Depending on the specified minimum distance,your vehicle will come to a standstill at a suffi-cient distance behind the vehicle in front. Thespecified minimum distance is set using thecontrol on the cruise control lever.
When Active Distance Assist DISTRONIC is acti-vated, the transmission is shifted automaticallyto position ]if:
Rthe driver's seat belt is not fastened and thedriver's door is open
Rthe engine is switched off, unless it is auto-matically switched off by the ECO start/stopfunction
The electric parking brake is applied automati-cally if Active Distance Assist DISTRONIC isactive when the vehicle is stationary and:
Ra system malfunction occurs
Rthe power supply is insufficient
If a malfunction occurs, the transmission mayalso be shifted to position ]automatically.
Setting a speed
XPush the cruise control lever up Cfor ahigher speed or down Dfor a lower speed.
XTo adjust the set speed in 1 mph incre-ments (1 km/h increments):briefly pushthe cruise control lever up Cor down Dtothe pressure point.Every time the cruise control lever is pressedup Cor down Dthe last speed stored isincreased or reduced.
XTo adjust the set speed in 5 mph incre-ments (10 km/h increments):briefly push
Driving systems165
Driving and parking
Z
ple, the detected vehicle turns a corner andan obstacle or stationary vehicle is revealed,Active Distance Assist DISTRONIC will notbrake for them.
RCrossing vehicles: Active Distance AssistDISTRONIC may mistakenly detect vehiclesthat are crossing your lane. Activating ActiveDistance Assist DISTRONIC at, for example, atraffic light with crossing traffic could causeyour vehicle to pull away at the wrong time.
In such situations, brake if necessary. ActiveDistance Assist DISTRONIC will then be deacti-vated.
Active Distance Assist DISTRONIC with
Active Steering Assist
General notes
Active Distance Assist DISTRONIC with ActiveSteering Assist aids you in keeping the vehicle inthe center of the driving lane by means of mod-erate steering interventions in a speed rangefrom 0 - 125 mph (0 - 200 km/h).
It monitors the area in front of your vehicle bymeans of multifunction camera C, which ismounted at the top of the windshield.
In a speed range from 0 - 37 mph (0 - 60 km/h),Active Steering Assist focuses on the vehicle infront, taking into account lane markings, e.g.when following vehicles in a traffic jam.
At speeds of more than 37 mph (60 km/h),Active Steering Assist focuses on clear lanemarkings (left and right), focusing on the vehiclein front only if clear lane markings are not pres-ent.
If these conditions are not present, Active Steer-ing Assist cannot provide assistance.
Active Distance Assist DISTRONIC must beactive in order for the function to be available.
Important safety notes
Active Distance Assist DISTRONIC with ActiveSteering Assist can neither reduce the risk of anaccident if you fail to adapt your driving style noroverride the laws of physics. Active DistanceAssist DISTRONIC with Active Steering Assistcannot take into account road, weather or trafficconditions. Active Distance Assist DISTRONICwith Active Steering Assist is only an aid. You areresponsible for maintaining a safe distance tothe vehicle in front, for vehicle speed, for brak-ing in good time and for staying in lane.
Active Distance Assist DISTRONIC with ActiveSteering Assist does not detect road and trafficconditions and does not detect all road users. Ifyou are following a vehicle which is drivingtowards the edge of the road, your vehicle couldcome into contact with the curb or other roadboundaries. Be particularly aware of other roadusers, e.g. cyclists, that are directly next to yourvehicle.
Obstacles such as traffic pylons at roadworks onthe lane or projecting out into the lane are notdetected.
An inappropriate steering intervention, e.g. afterintentionally driving over a lane marking, can becorrected at any time if you steer slightly in theopposite direction.
Active Distance Assist DISTRONIC with ActiveSteering Assist cannot continuously keep yourvehicle in lane. In some cases, steering inter-vention is not sufficient to bring the vehicle backto the lane. In such cases, you must steer thevehicle yourself to ensure that it does not leavethe lane.
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
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
168Driving systems
Driving and parking
HOLD function
General notes
The HOLD function can assist the driver in thefollowing situations:
Rwhen pulling away, especially on steep slopes
Rwhen maneuvering on steep slopes
Rwhen waiting in traffic
The vehicle is kept stationary without the driverhaving to depress the brake pedal.
The braking effect is canceled and the HOLDfunction deactivated when you depress theaccelerator pedal to pull away.
Important safety notes
GWARNING
If the vehicle is only braked using the HOLD
function, the vehicle may roll away in the fol-
lowing situations when you leave the vehicle:
Rif there is a malfunction in the system or in
the voltage supply
Rif the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant
Rif the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with or the battery is disconnected
There is a risk of an accident.
Always deactivate the HOLD function and
secure the vehicle against rolling away before
you leave it.
!When DISTRONIC PLUS or the HOLD func-tion is activated, the vehicle brakes automat-ically in certain situations.
To avoid damage to the vehicle, deactivateDISTRONIC PLUS and the HOLD function inthe following or similar situations:
Rwhen towing the vehicle
Rin the car wash
Deactivating the HOLD function (Ypage 170).
Activation conditions
You can activate the HOLD function if all of thefollowing conditions are fulfilled:
Rthe vehicle is stationary.
Rthe engine is running or if it has been auto-matically switched off by the ECO start/stopfunction.
Rthe driver's door is closed or your seat belt isfastened.
Rthe electric parking brake is released.
Rthe transmission is in position [, ^or \\.
RDISTRONIC PLUS is deactivated.
Activating the HOLD function
XMake sure that the activation conditions aremet.
XDepress the brake pedal.
XQuickly depress the brake pedal furtheruntil Cappears in the multifunction display.The HOLD function is activated. You canrelease the brake pedal.
If depressing the brake pedal the first time doesnot activate the HOLD function, wait briefly andthen try again.
Deactivating the HOLD function
The HOLD function is deactivated automaticallyif:
Ryou depress the accelerator and the trans-mission is in position [or ^
Rthe transmission is in position ]
Ryou depress the brake pedal again with a cer-tain amount of pressure until display
Ryou secure the vehicle using the electric park-ing brake
Ryou activate DISTRONIC PLUS
After a time, the electric parking brake securesthe vehicle and relieves the service brake.
When the HOLD function is activated, the trans-mission is shifted automatically to position ]if:
Rthe driver's seat belt is not fastened and thedriver's door is open
Rthe engine is switched off, unless it is auto-matically switched off by the ECO start/stopfunction
The electric parking brake secures the vehicleautomatically if the HOLD function is activatedwhen the vehicle is stationary and:
Ra system malfunction occurs
Rthe power supply is insufficient
If a malfunction occurs, the transmission mayalso be shifted to position ]automatically.
RACE START
Important safety notes
iRACE START is only available for theMercedes-AMG GLC 63 4MATIC+ andMercedes-AMG GLC 63 S 4MATIC+ models.
iRACE START must not be used on normalroads. RACE START must only be activatedand used on dedicated road circuits, outsideof public road use.
iRACE START is only available after the vehi-cle has been run-in (Ypage 130).
RACE START enables optimal acceleration froma standing start. For this, a suitably high-griproad surface is required and the vehicle and tiresmust be in good working order.
GWARNING
If you use RACE START, individual tires may
start to spin and the vehicle could skid.
Depending on the selected ESP®mode, there
is an increased risk of skidding and having an
accident. Make sure that no persons, animals
or obstacles are within range of the vehicle.
iObserve the safety notes on driving safetysystems (Ypage 65).
Be sure to read the safety notes and informa-
tion on ESP®(Ypage 68).
Activation conditions
You can activate RACE START if:
Rthe doors are closed
Rthe hood is closed
Rthe tailgate is closed
Rthe engine is running and the engine andtransmission are at operating temperature
Rthe steering wheel is in the straight-aheadposition.
Rthe vehicle is on a level surface
Rthe vehicle is stationary, the brake pedal isdepressed (left foot) and the parking brake isreleased
Rthe transmission is in position [
Rthe drive programS,S+orRaceis selected.(Ypage 139)
Activating RACE START
XQuickly depress the accelerator pedal fully.The engine speed is increased.
iIf the activation conditions are not fulfilled,RACE START cannot be carried out. TheRACERACESTART Not Possible See Operator'sSTART Not Possible See Operator'sManualManualmessage appears in the multifunctiondisplay.
XTheRACERACESTARTSTARTReleaseReleasebrakebraketotostartstartmessage appears on the multifunction dis-play.
iIn this phase you can adjust RACE STARTdepending on the road conditions: you canvary the engine speed by pulling on one of thesteering wheel paddle shifters. The segmentsin the multifunction display flicker rapidly.
iIf you do not release the brake pedal withina short time, RACE START will be canceled.TheRACE START CanceledRACE START Canceledmessageappears in the multifunction display.
XTake your foot off the brake, but keep theaccelerator pedal depressed.The vehicle pulls away at maximum acceler-ation.
TheRACE START ActiveRACE START Activemessage appearson the multifunction display.
Driving systems171
Driving and pa rking
Z
S(Sport)Rthe suspension setting ismore taut
Rthe vehicle is set to low level
RMercedes-AMG GLC 634MATIC+/GLC 63 S4MATIC+:the 4MATIC+ issynchronised more dynami-cally
S+(SportPlus)
Mercedes-AMG GLC63 4MATIC+/GLC63 S4MATIC+:RACE
Rthe suspension setting iseven more taut
Rthe vehicle is set to low level
RMercedes-AMG GLC 634MATIC+/GLC 63 S4MATIC+:the 4MATIC+ issynchronised more dynami-cally
Important safety notes
GWARNING
When the vehicle is being lowered, people
could become trapped if their limbs are
between the vehicle body and the wheels or
underneath the vehicle. There is a risk of
injury.
Make sure no one is underneath the vehicle or
in the immediate vicinity of the wheel arches
when the vehicle is being lowered.
iIf one of the doors is open, the vehicle is notlowered.
Vehicle level
Setting the raised vehicle level
Mercedes-AMG vehicles:it is possible tochoose between the "Normal" and "Raised"
vehicle levels below a speed of 30 mph(50 km/h). Select the "Normal" setting for nor-mal road surfaces and "Raised" for driving withsnow chains or on particularly poor road surfa-ces. Your selection remains stored even if youremove the SmartKey from the ignition lock.
All other models:it is possible to choosebetween the "Normal" and "Raised" vehicle lev-els below a speed of 50 mph (80 km/h). Selectthe "Normal" setting for normal road surfacesand "Raised" for driving with snow chains or onparticularly poor road surfaces. Your selectionremains stored even if you remove the Smart-Key from the ignition lock.
XStart the engine.
If indicator lamp Dis not lit:
XPress button C.Indicator lamp Dlights up.
The vehicle is set to high level.
TheVehicleVehicleRisingRisingmessage appears in themultifunction display.
iThe message disappears after ten seconds,irrespective of the level reached. If necessary,the vehicle is raised further.
Mercedes-AMG GLC 43 4MATIC:the "Raisedlevel" setting is canceled if you:
Rdrive at speeds greater than 44 mph(70 km/h)
Rdrive for approximately three minutes atspeeds greater than 37 mph (60 km/h)
Mercedes-AMG GLC 63 4MATIC+/GLC 63 S4MATIC+:the "Raised level" setting is canceledif you:
Rdrive at speeds greater than 44 mph(70 km/h)
Rdrive for approximately three minutes atspeeds greater than 37 mph (60 km/h)
All other models:the "Raised level" setting iscanceled if you:
Rdrive faster than 75 mph (120 km/h)
Rdrive for approximately three minutes at aspeed above 50 mph (80 km/h)
The "Raised level" remains active when you arenot driving within these speed ranges.
Setting the normal vehicle level
XStart the engine.
Driving systems173
Driving and parking
Z
iIf Parking Assist PARKTRONIC detectsobstacles, Active Parking Assist will brakeautomatically whilst the vehicle is parking.You are responsible for braking in good time.
XStop the vehicle when the parking space sym-bol shows the desired parking space in theinstrument cluster.
XShift the transmission to position ^.TheStart Parking Assist?Start Parking Assist?Yes: OKYes: OKNo:No: 8message appears in the multifunctiondisplay.
XTo cancel the procedure:press the 8button on the multifunction steering wheel orpull away.
or
XTo park using Active Parking Assist:pressthe vbutton on the multifunction steeringwheel.TheParkingParkingAssistAssistActiveActiveAccelerateAccelerateand Brakeand BrakeObserve SurroundingsObserve Surroundingsmes-sage appears in the multifunction display.
XLet go of the multifunction steering wheel.
XBack up the vehicle, being ready to brake at alltimes. When backing up, drive at a speedbelow approximately 6 mph (10 km/h). Oth-erwise, Active Parking Assist will be canceled.Active Parking Assist brakes the vehicle to astandstill when the vehicle approaches therear border of the parking space.
Maneuvering may be required in tight parkingspaces.
TheParking Assist Active Select DParking Assist Active Select DObserve SurroundingsObserve Surroundingsmessage appears inthe multifunction display.
XShift the transmission to position [whenthe vehicle is stationary.Active Parking Assist immediately steers inthe other direction.
TheParkingParkingAssistAssistActiveActiveAccelerateAccelerateand Brakeand BrakeObserve SurroundingsObserve Surroundingsmes-sage appears in the multifunction display.
iYou will achieve the best results by waitingfor the steering procedure to complete beforepulling away.
XDrive forwards and be ready to brake at alltimes.Active Parking Assist brakes the vehicle to astandstill when the vehicle approaches therear border of the parking space.
Maneuvering may be required in tight parkingspaces.
TheParking Assist Active Select RParking Assist Active Select RObserve SurroundingsObserve Surroundingsmessage appears inthe multifunction display.
As soon as the parking procedure is complete,theActive Parking Assist FinishedActive Parking Assist Finishedmes-sage appears and a warning tone sounds. Thevehicle is now parked.
The vehicle is kept stationary without the driverhaving to depress the brake pedal. The brakingeffect is canceled when you depress the accel-erator pedal.
Active Parking Assist no longer supports youwith steering interventions and brake applica-tions. When Active Parking Assist is finished,you must steer and brake again yourself. Park-ing Assist PARKTRONIC is still available.
Parking tips:
RThe way your vehicle is positioned in the park-ing space after parking is dependent on vari-ous factors. These include the position andshape of the vehicles parked in front andbehind it and the conditions of the location. Itmay be the case that Active Parking Assistguides you too far into a parking space, or notfar enough into it. In some cases, it may alsolead you across or onto the curb. If necessary,cancel the parking procedure with ActiveParking Assist.
RYou can also prematurely select transmissionposition [. The vehicle redirects and doesnot drive as far into the parking space. Shouldthe transmission change take place too early,the parking procedure is canceled. A sensibleparking position can no longer be achievedfrom this position.
Exiting a parking space
In order that Active Parking Assist can supportyou when exiting the parking space:
Rthe border of the parking space must be highenough at the front and the rear. A curb stoneis too small, for example.
Rthe border of the parking space must not betoo wide. Your vehicle can be maneuveredinto the parking space at a maximum angle of45° to the starting position.
Ra maneuvering distance of at least 3.3 ft(1.0 m) must be available.
Active Parking Assist can only assist you withexiting a parking space if you have parked thevehicle parallel to the direction of travel usingActive Parking Assist.
178Driving systems
Driving and parking