ESP MERCEDES-BENZ CLA 2019 Workshop Manual

cle with all wheels in full contact with theground.
4MATIC, together with ESP®, improves the trac-tion of your vehicle whenever a drive wheelspins due to insufficient grip.
If you fail to adapt your driving style, 4MATIC canneither reduce the risk of accident nor overridethe laws of physics. 4MATIC cannot takeaccount of road, weather and traffic conditions.4MATIC is only an aid. You are responsible forthe distance to the vehicle in front, for vehiclespeed, for braking in good time and for staying inyour lane.
If a drive wheel spins due to insufficient grip:
ROnly depress the accelerator pedal as far asnecessary when pulling away.
RAccelerate less when driving.
iIn wintry driving conditions, the maximumeffect of 4MATIC can only be achieved if youuse winter tires (M+S tires), with snow chainsif necessary.
DYNAMIC BODY CONTROL
General notes
DYNAMIC BODY CONTROL offers improveddriving comfort and continuously controls thecalibration of the dampers. The damping char-acteristics adapt to the current operating anddriving situation.
The damping is tuned individually to each wheeland depends on:
Ryour driving style, e.g. sporty
Rthe road surface conditions
Rthe drive program selected
The drive program can be set using theDYNAMIC SELECT button (Ypage 129).
Selecting Comfort mode
In theComfortdrive program, the driving char-acteristics of your vehicle are more comforta-ble. Therefore, select this drive program if youprefer a more comfortable driving style. Alsoselect theComfortdrive program when drivingfast on straight roads, e.g. on straight stretchesof highway.
XPress DYNAMIC SELECT button (Ypage 129)as many times as necessary until theCom-fortdrive program is selected.
Selecting Sport mode
The firmer setting of the suspension tuning intheSportdrive program ensures even bettercontact with the road. Select this drive programwhen employing a sporty driving style, e.g. onwinding country roads.
XPress DYNAMIC SELECT button (Ypage 129)as many times as necessary until theSportdrive program is selected.
Parking Assist PARKTRONIC
Important safety notes
Parking Assist PARKTRONIC is an electronicparking aid with ultrasound. It monitors the areaaround your vehicle using six sensors in thefront bumper and six sensors in the rearbumper. Parking Assist PARKTRONIC visuallyand audibly indicates the distance between yourvehicle and an object.
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 when you are maneuvering or park-ing.
!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.
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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 269).
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.
Active Parking Assist
General notes
Active Parking Assist is an electronic parking aidwith ultrasound. It measures the road on bothsides of the vehicle. A parking symbol indicatesa suitable parking space. Active steering inter-vention and brake application can assist youduring parking and when exiting a parkingspace. You can also still use Parking AssistPARKTRONIC (Ypage 162).
Important safety notes
Active Parking Assist is merely an aid. It is not areplacement for your attention to your immedi-ate surroundings. You are always responsiblefor safe maneuvering, parking and exiting aparking space. Make sure that there are no per-sons, animals or objects in the maneuveringarea when you are maneuvering or parking.
When Parking Assist PARKTRONIC is deactiva-ted, Active Parking Assist is also unavailable.
GWARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
cause you to collide with other road users or
objects. There is a risk of an accident.
Pay attention to other road users or objects.
Stop the vehicle if necessary or cancel the
Active Parking Assist parking procedure.
!If they cannot be avoided, drive over obsta-cles such as curbs slowly and at an obtuseangle. Otherwise, you may damage thewheels or tires.
Active Parking Assist may possibly indicateparking spaces which are not suitable for park-ing, for example:
Rwhere parking or stopping is prohibited
Rin front of driveways or entrances and exits
Ron unsuitable surfaces
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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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can take over the steering before the vehicle hasexited the parking space completely. This isuseful, for example when you recognize that it isalready possible to pull out of the parking space.
Canceling Active Parking Assist
XStop the movement of the multifunctionsteering wheel or steer yourself.Active Parking Assist will be canceled at once.TheActive Parking Assist CanceledActive Parking Assist Canceledmessage appears in the multifunction display.
or
XPress the PARKTRONIC button (Ypage 164).Active Parking Assist is switched off andActive Parking Assist is immediately can-celed. TheActive Parking Assist Can‐Active Parking Assist Can‐celedceledmessage appears in the multifunctiondisplay.
Active Parking Assist is canceled automaticallyif:
Rthe electric parking brake is engaged
Rtransmission position]is selected
Rparking using Active Parking Assist is no lon-ger possible
Ryou are driving faster than 6 mph (10 km/h)
Ra wheel spins, ESP®intervenes or fails. Insuch cases the

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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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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There is a short delay before a change in outsidetemperature appears in the multifunction dis-play.
Coolant temperature gauge
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
!A display message is shown if the coolanttemperature is too high.
If the coolant temperature is over 248 ‡(120 †), do not continue driving. The enginewill otherwise be damaged.
The coolant temperature gage is in the instru-ment cluster on the right-hand side (Ypage 33).
TheHmarking in the coolant temperature gaugecorresponds to a coolant temperature ofapproximately 248 ‡ (120 †).
Under normal operating conditions and at thecorrect coolant level, the coolant temperaturegauge may rise to theHmarking.
Operating the on-board computer
Overview
CMultifunction display
DRight control panel

XEstablish a Bluetooth®connection to the mul-timedia system (see the Digital Operator'sManual).
XPress theYorebutton on the steeringwheel to select theTelTelmenu.
You will see one of the following display mes-sages in the multifunction display:
RPhone READYPhone READYor the name of the networkprovider: the mobile phone has found a net-work and is ready to receive.
RPhone No ServicePhone No Service: there is no networkavailable or the mobile phone is searching fora network.
Accepting a call
If someone calls you when you are in theTelTelmenu, a display message appears in the multi-function display.
You can accept a call at any time, even if you arenot in theTelTelmenu.
XPress theabutton on the steering wheelto accept an incoming call.
Rejecting or ending a call
You can end or reject a call anytime, even if youare not in theTelTelmenu.
XPress thevbutton on the steering wheelto reject or end a call.
Selecting an entry in the phone book
XPress theYorebutton on the steeringwheel to select theTelTelmenu.
XPress thec,dorvbutton toswitch to the phone book.
XAuthorize access to the phone book on thephone.
XPress thecordbutton to select thedesired name.
or
XTo begin rapid scrolling:press and hold thecordbutton for longer than one sec-ond.Rapid scrolling stops when you release thebutton or reach the end of the list.
XIf only one telephone number is stored fora name:press theaorvbutton tostart dialing.
or
XIf there is more than one number for aparticular name:press theaorvbutton to display the numbers.
XPress thecordbutton to select thenumber you want to dial.
XPress theaorvbutton to start dialing.
or
XIf you do not want to make a call:press thevor8button.
Redialing
The on-board computer saves the last names ornumbers dialed in the redial memory.
XPress theYorebutton on the steeringwheel to select theTelTelmenu.
XPress theabutton to switch to the redialmemory.
XPress thecordbutton to select thedesired name or number.
XPress theaorvbutton to start dialing.
or
XIf you do not want to make the call:pressthevor8button.
Assistance menu
Introduction
Depending on the equipment installed in thevehicle, you have the following options in theDriveAssistDriveAssistmenu:
RDisplaying the assistance graphic(Ypage 187)
RDeactivating/activating ESP®(exceptMercedes‑AMG vehicles) (Ypage 187)
RActivating/deactivating Active Brake Assist(Ypage 187)
RActivating/deactivating ATTENTION ASSIST(Ypage 187)
RActivating/deactivating Blind Spot Assist(Ypage 188)
RActivating/deactivating Lane Keeping Assist(Ypage 188)
186Menus and submenus
On-board computer and displays