2019 MERCEDES-BENZ CLA warning

Parking tips:
ROn narrow roads, drive as close to the parkingspace as possible
RParking spaces that are littered or overgrownmight be identified or measured incorrectly
RParking spaces that are partially occupied bytrailer drawbars might not be identified assuch or be measured incorrectly
RSnowfall or heavy rain may lead to a parkingspace being measured inaccurately
RPay attention to the warning messages ofParking Assist PARKTRONIC during the park-ing procedure (Ypage 164).
RYou can intervene in the steering procedureto correct it at any time. Active Parking Assistwill then be canceled
RWhen transporting a load which protrudesfrom your vehicle, you should not use ActiveParking Assist
RNever use Active Parking Assist when snowchains are installed
RMake sure that the tire pressures are alwayscorrect. This has a direct influence on theparking characteristics of the vehicle.
Use Active Parking Assist for parking spaces:
Rthat are parallel or at right-angles to the direc-tion of travel
Ron straight roads, not bends
Ron the same level as the road, e.g. not on thepavement
Detecting parking spaces
Objects located above the detection range ofActive Parking Assist will not be detected whenthe parking space is measured. These are nottaken into account when the parking procedureis calculated, e.g. overhanging loads, truck over-hangs or loading ramps. Active Parking Assistmay therefore guide you into the parking spacetoo early.
Active Parking Assist does not support you park-ing in spaces at right angles to the direction oftravel if:
Rtwo parking spaces are located directly nextto one another
Rthe parking space is directly next to a lowobstacle such as a low curb
Ryou park forwards
Active Parking Assist does not support you park-ing in spaces that are parallel or at right anglesto the direction of travel if:
Rthe parking space is on a curb
Rthe system reads the parking space as beingblocked, for example by foliage or grass pav-ing blocks
Rthe area is too small for the vehicle to maneu-ver into
Rthe parking space is bordered by an obstacle,e.g. a tree, a post or a trailer
Further information about the detection range(Ypage 163).
GWARNING
If there are objects above the detection range:
Rthe Parking Package with rear view camera
may steer too early
Rthe vehicle may not stop in front of these
objects
This could cause a collision. There is a risk of
an accident.
If objects are located above the detection
range, stop and deactivate the Parking Pack-
age with rear view camera.
CDetected parking space on the left
DParking symbol

Rthat are parallel to the direction of travel andat least 39.5 in (1.0m)longer than your vehi-cle
Rat right angles to the direction of travel and atleast 39.5 in (1.0 m) wider than your vehicle
When driving at speeds below 19 mph(30 km/h), you will see parking symbolDas astatus indicator in the instrument cluster. Whena parking space has been detected, an arrowtowards the right or the left also appears. Bydefault, Active Parking Assist only displays park-ing spaces on the front-passenger side. Parkingspaces on the driver's side are displayed assoon as the turn signal on the driver's side isactivated. When parking on the driver's side,this must remain activated until you confirm theuse of Active Parking Assist by pressing thevbutton on the multifunction steeringwheel. The system automatically determineswhether the parking space is parallel or at right-angles to the direction of travel.
A parking space is displayed while you are driv-ing past it, and until you are approximately 50 ft(15 m) away from it.
Parking
GWARNING
If you leave the driver's seat when the vehicle
is only being braked by the Parking Package
with rear view camera, it could roll away:
Rif there is a malfunction in the system or in
the voltage supply
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.
Before leaving the vehicle, always secure it
against rolling away.
iIf Active Parking Assist detects obstacles,Active Parking Assist brakes automaticallywhile the vehicle is parking. You are respon-sible 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 on the multifunctiondisplay.
XTo cancel the procedure:press the8button on the multifunction steering wheel orpull away.
or
XTo park using Active Parking Assist:pressthevbutton on the multifunction steeringwheel.TheParkingParkingAssistAssistActiveActiveAccelerateAccelerateand Brakeand BrakeObserve SurroundingsObserve Surroundingsmes-sage appears on 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 SelectParking Assist Active SelectDDObserveObserveSurroundingsSurroundingsmessage appears onthe multifunction display.
XShift the transmission to position[whilethe vehicle is stationary.Active Parking Assist immediately steers inthe other direction.
TheParkingParkingAssistAssistActiveActiveAccelerateAccelerateand Brakeand BrakeObserve SurroundingsObserve Surroundingsmes-sage appears on 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 thefront border of the parking space.
Maneuvering may be required in tight parkingspaces.
TheParking Assist Active Select RParking Assist Active Select RObserve SurroundingsObserve Surroundingsmessage appears onthe multifunction display.
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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. ActiveParking Assist 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 preselect transmission position[. The vehicle redirects and does not driveas far into the parking space. Should thetransmission change take place too early, theparking 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:
Ryou need to have parked using Active ParkingAssist.
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, as the position of the vehicle mustnot exceed an angle of 45° to the startingposition as it is maneuvered into the parkingspace.
Ra maneuvering distance of at least 3.3 ft(1.0m) 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.
iIf Active Parking Assist detects obstacles,Active Parking Assist brakes automaticallywhile the vehicle is exiting the parking space.You are responsible for braking in good time.
XStart the engine.
XRelease the electric parking brake.
XSwitch on the turn signal in the direction youwill drive out of the parking space.
XShift the transmission to position[or^.TheStart Parking Assist?Start Parking Assist?Yes: OKYes: OKNo:No:8message appears on the multifunctiondisplay.
XTo cancel the procedure:press the8button on the multifunction steering wheel orpull away.
or
XTo exit a parking space using Active Park-ing Assist:press thevbutton on the mul-tifunction steering wheel.TheParkingParkingAssistAssistActiveActiveAccelerateAccelerateand Brakeand BrakeObserve SurroundingsObserve Surroundingsmes-sage appears on the multifunction display.
XLet go of the multifunction steering wheel.
XPull away, being ready to brake at all times. Donot exceed a maximum speed of approx-imately 6 mph (10 km/h) when exiting a park-ing space. Otherwise, Active Parking Assistwill be canceled.
XDepending on the message or as required,shift the transmission to position[or^.Active Parking Assist immediately steers inthe other direction. TheParking AssistParking AssistActive Accelerate and BrakeActive Accelerate and BrakeObserveObserveSurroundingsSurroundingsmessage appears on the mul-tifunction display.
iYou will achieve the best results by waitingfor the steering procedure to complete beforepulling away.
If you back up after activation, the steeringwheel is moved to the straight-ahead posi-tion.
XDrive forwards and reverse as prompted bythe Active Parking Assist warning displays,several times if necessary.
Once you have exited the parking space com-pletely, the steering wheel is moved to thestraight-ahead position. You hear a tone and theActive Parking Assist FinishedActive Parking Assist Finishedmessageappears on the multifunction display. You willthen have to steer and merge into traffic on yourown. Active Parking Assist is still available. You
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Rif the camera lens is dirty or obstructed.Observe the notes on cleaning(Ypage 269)
Rif the rear of your vehicle is damaged. In thiscase, have the camera position and settingchecked at a qualified specialist workshop.
The field of vision and other functions of the rearview camera may be restricted due to additionalaccessories on the rear of the vehicle (e.g.license plate holder, rear bicycle rack).
iThe contrast of the display may be affectedby the sudden presence of sunlight or otherlight sources, e.g. when exiting a garage. Payparticular attention in this situation.
iIf usability is severely restricted, e.g. due topixel errors, have the display repaired orreplaced.
Activating/deactivating the rear view
camera
XTo activate:make sure that the SmartKey isin positionHin the ignition lock.
XMake sure that theActivation by R gearActivation by R gearfunction is selected in the multimedia system;see the Digital Operator's Manual.
XEngage reverse gear.The area behind the vehicle is shown withguide lines in the multimedia system display.
The image from the rear view camera is avail-able throughout the maneuvering process.
To deactivate:the rear view camera deacti-vates if you shift the transmission to]or afterdriving forwards a short distance.
The inner segments of the warning indicator aredisplayed in red if there is a complete systemfailure. The indicator lamp in the PARKTRONICbutton lights up.
If the system fails at the rear of the vehicle:
Rthe rear segments are shown in red whenbacking up.
Rthe rear segments are hidden when drivingforwards.
Messages in the multimedia system dis-
play
The rear view camera may show a distorted viewof obstacles, show them incorrectly or not at all.The rear view camera does not show objects inthe following positions:
Rvery close to the rear bumper
Runder the rear bumper
Rin close range above the handle on the trunklid
!Objects not at ground level may appear tobe further away than they actually are, e.g.:
Rthe bumper of a parked vehicle
Rthe drawbar of a trailer
Rthe ball coupling of a trailer tow hitch
Rthe rear section of an HGV
Ra slanted post
Use the guidelines only for orientation.Approach objects no further than the bottom-most guideline.
CYellow guide line at a distance of approx-imately 13 ft (4.0 m) from the rear of thevehicle
DWhite guide line without steering input –vehicle width including the exterior mirrors(static)

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 range of the sensors
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 or snow
Ra narrow vehicle traveling in front, e.g. amotorbike or bicycle
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.
Blind Spot Assist monitors the area up to 10 ft(3 m) behind your vehicle and directly next to it.
If the lanes are narrow, vehicles driving in thelane beyond the lane next to your vehicle may beindicated, especially if the vehicles are not driv-ing in the middle of their lane. This may be thecase if the vehicles are driving on the inner sideof their lane.
Due to the nature of the system:
Rwarnings may be issued in error when drivingclose to crash barriers or similar solid laneborders.
Rwarnings may be interrupted when you aredriving alongside particularly long vehicles,such as trucks, for a prolonged time.
Warning display
CWarning display
Blind Spot Assist is not active at speeds belowapproximately 20 mph (30 km/h). Vehicles inthe monitoring range are then not indicated.
When Blind Spot Assist is activated, indicatorlampCin the exterior mirrors lights up yellowat speeds of up to 20 mph (30 km/h). At speedsabove 20 mph (30 km/h), the indicator lampgoes out and Blind Spot Assist is operational.
If a vehicle is detected within the blind spotmonitoring range at speeds above 20 mph(30 km/h), warning lampCon the correspond-ing side lights up red. This warning is alwaysemitted when a vehicle enters the blind spotmonitoring range from behind or from the side.When you overtake a vehicle, the warning onlyoccurs if the difference in speed is less than7 mph (12 km/h).
The yellow indicator lamp goes out if reversegear is engaged. In this event, Blind Spot Assistis no longer active.
The brightness of the indicator/warning lampsis adjusted automatically according to the ambi-ent light.
Collision warning
If a vehicle is detected in the monitoring range ofBlind Spot Assist and you switch on the corre-sponding turn signal, a double warning tonesounds. Red warning lampCflashes. If the turnsignal remains on, vehicles detected are indica-ted by the flashing of red warning lampC.There are no further warning tones.
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Switching on Blind Spot Assist
XMake sure that Blind Spot Assist is activatedin the on-board computer (Ypage 188).
XTurn the SmartKey to positionHin the igni-tion lock.Warning lampsCin the exterior mirrors lightup red for approximately 1.5 seconds andthen turn yellow.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in front ofyour vehicle by means of multifunction cam-eraCwhich is attached behind the top of thewindshield. Lane Keeping Assist detects lanemarkings on the road and can warn you beforeyou leave your lane unintentionally.
This function is available in the range between40 mph and 120 mph (60 km/h and 200 km/h).
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.
Important safety notes
GWARNING
Lane Keeping Assist cannot always clearly
detect lane markings.
In such cases, Lane Keeping Assist can:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Lane Keeping Assist alerts you.
GWARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist.
If you fail to adapt your driving style, Lane Keep-ing Assist can neither reduce the risk of an acci-dent nor override the laws of physics. LaneKeeping Assist cannot take into account theroad, traffic and weather conditions. Lane Keep-ing Assist is merely an aid. You are responsiblefor the distance to the vehicle in front, for vehi-cle speed, for braking in good time and for stay-ing in your lane.
The Lane Keeping Assist does not keep the vehi-cle in the 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 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
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
Switching on Lane Keeping Assist
XSwitch on Active Lane Keeping Assist usingthe on-board computer; to do so, selectStandardStandardorAdaptiveAdaptive(Ypage 176).If you drive at speeds above 40 mph(60 km/h) and lane markings are detected,the lines in the assistance graphic are shown
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Driving and parking

in green (Ypage 187). Lane Keeping Assist isready for use.
IfStandardStandardis selected, no warning vibrationoccurs if:
Ryou have switched on the turn signal. In thisevent, the warnings are suppressed for a cer-tain period of time.
Ra driving safety system intervenes, e.g. ABS,
BAS or ESP®.
WhenAdaptiveAdaptiveis selected, no warning vibra-tion occurs if:
Ryou have switched on the turn signal. In thisevent, the warnings are suppressed for a cer-tain period 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
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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.
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.
If the operating safety of your vehicle isimpaired, pull over as soon as it is safe to do so.Contact a qualified specialist workshop.
For an overview, see the instrument panel illus-tration (Ypage 33).
Displays and operation
Instrument cluster lighting
The light sensor in the instrument cluster auto-matically controls the brightness of the multi-function display. In daylight, the displays in theinstrument cluster are not illuminated.
The lighting in the instrument cluster, in the dis-plays and the controls in the vehicle interior canbe adjusted using the brightness control knob.
The brightness control knob is located on thebottom left of the instrument cluster(Ypage 33).
XTurn the brightness control knob clockwise orcounter-clockwise.If the light switch is set to theX,`orXposition, the brightness is dependentupon the brightness of the ambient light.
Speedometer with segments
The speedometer is only divided into segmentsin vehicles with Active Distance AssistDISTRONIC.
The segments in the speedometer indicatewhich speed range is available.
RActive Distance Assist DISTRONIC activated(Ypage 152):
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.
Tachometer
!Do not drive in the overrevving range, as thiscould damage the engine.
The red band in the tachometer indicates theengine's overrevving range.
The engine is limited within a range to protectthe engine when the red band is reached.
Outside temperature display
You should pay special attention to road condi-tions when temperatures are around freezingpoint.
Bear in mind that the outside temperature dis-play indicates the temperature measured anddoes not record the road temperature.
The outside temperature display is in the multi-function display (Ypage 181).
178Displays and operation
On-board computer and displays