lane assist MERCEDES-BENZ CLA 2019 Owners Manual

Display (DIRECT SELECT lever) ...... 131
Driver's door
see Doors
Driving
Towing vehicles ............................. 129
Driving abroad
Mercedes-Benz Service ................. 265
Driving on flooded roads.................. 150
Driving safety system
Active Brake Assist .......................... 62
Braking assistance appropriate to
the situation .....................................63
Driving safety systems
ABS (Anti-lock Braking System) .......61
ADAPTIVE BRAKE............................. 68
BAS (Brake Assist System) .............. 61
Distance warning function ............... 62
EBD (electronic brake force distri-
bution) ............................................. 67
ESP®(Electronic Stability Pro-
gram) ............................................... 64
Important safety information ........... 61
Overview .......................................... 61
STEER CONTROL ............................. 68
Driving system
DYNAMIC BODY CONTROL ............ 162
Parking assist PARKTRONIC .......... 162
RACE START (Mercedes-AMG
vehicles) ........................................ 160
Start-off assist ............................... 159
Driving systems
Active Parking Assist ..................... 165
AMG adaptive sport suspension
system ........................................... 161
ATTENTION ASSIST ........................ 173
Blind Spot Assist ............................ 174
Cruise control ................................ 150
Display message ............................ 209
HOLD function ............................... 158
Lane Keeping Assist ...................... 176
Lane Tracking package .................. 174
Rear view camera .......................... 169
Driving tips
Active Distance Assist
DISTRONIC ............................ 152, 158
Automatic transmission ................. 134
Brakes ........................................... 147
Break-in period .............................. 122
Checking brake lining thickness .... 149
Downhill gradient ........................... 147
Drinking and driving ....................... 146
Driving in winter ............................. 150
Driving on flooded roads ................ 150
Driving on wet roads ...................... 149
Exhaust check ............................... 146
Fuel ................................................ 146
General .......................................... 145
Hydroplaning ................................. 149
Icy road surfaces ........................... 150
Limited braking efficiency on sal-
ted roads ....................................... 148
Snow chains .................................. 293
The first 1000 miles (1500 km) ..... 122
Wet road surface ........................... 148
DVD video
Operating (on-board computer) ..... 185
see also Digital Operator's Man-
ual .................................................. 231
DYNAMIC SELECT button
Climate control (3-zone automatic
climate control) ............................. 116
Climate control (air-conditioning
system) .......................................... 113
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehi-
cles).................................................... 129
DYNAMIC SELECT controller............ 130
DYNAMIC SELECT controller
(Mercedes-AMG vehicles)................. 130
E
EASY-PACK tailgate
see Tailgate
EASY-VARIO-PLUS system
Cargo compartment enlargement .. 242
EBD (electronic brake force distri-
bution)
Display message ............................ 196
Function/notes................................ 67
ECO display
Function/notes............................. 146
On-board computer ....................... 182
ECO start/stop function
Automatic engine start .................. 127
Automatic engine switch-off .......... 127
Index9

Home address
see also Digital Operator's Man-
ual .................................................. 231
Hood
Closing ........................................... 261
Display message ............................ 217
Important safety notes .................. 260
Opening .........................................260
Horn...................................................... 32
Hydroplaning..................................... 149
I
Ignition lock
see Key positions
Immobilizer.......................................... 68
Indicator lamp
Replacing bulbs (rear) .................... 107
Indicator lamps
see Warning and indicator lamps
Indicators
see Turn signals
Instrument cluster
Overview .......................................... 33
Settings ......................................... 188
Warning and indicator lamps ........... 33
Instrument cluster lighting.............. 178
Interior lighting
Control ...........................................105
Overview ........................................ 104
Reading lamp ................................. 104
iPod®
see also Digital Operator's Man-
ual ..................................................231
J
Jack
Storage location ............................ 274
Using ............................................. 312
Jump starting (engine)......................282
K
Key positions
Start/Stop button .......................... 123
KEYLESS-GO
Convenience closing feature ............ 84
Deactivation ..................................... 71
Locking ............................................ 71
Unlocking ......................................... 71
Kickdown
Driving tips ....................................135
Manual gearshifting ....................... 139
Knee bag.............................................. 46
L
Lamps
see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 188
Display message ............................ 210
Function/information.................... 176
Lane Tracking package..................... 174
Lap time (RACETIMER)...................... 191
LATCH-type (ISOFIX) child seat
anchors................................................ 57
License plate lamp (display mes-
sage)................................................... 205
Light sensor (display message)....... 206
Lights
Adaptive Highbeam Assist ............. 103
Automatic headlamp mode ............ 101
Fogged up headlamps.................... 104
Hazard warning lamps ................... 103
High beam flasher .......................... 102
High-beam headlamps................... 102
Light switch ................................... 101
Low-beam headlamps.................... 102
Parking lamps ................................ 102
Rear fog lamp ................................ 102
Setting exterior lighting ................. 101
Standing lamps .............................. 102
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 189
Turn signals ................................... 102
Loading guidelines............................ 239
Locking
see Central locking
Locking (doors)
Automatic ........................................ 77
Emergency locking ........................... 77
From inside (central locking but-
ton) .................................................. 76
12Index

Driving safety systems
Overview of driving safety systems
In this section, you will find information aboutthe following driving safety systems:
RABS (Anti-lockBrakingSystem)(Ypage 61)
RBAS (BrakeAssistSystem) (Ypage 61)
RActive Brake Assist (Ypage 62)
RESP®(ElectronicStabilityProgram)(Ypage 64)
REBD (ElectronicBrake forceDistribution)(Ypage 67)
RADAPTIVE BRAKE (Ypage 68)
RSTEER CONTROL (Ypage 68)
Important safety notes
If you fail to adapt your driving style or if you areinattentive, the driving safety systems can nei-ther reduce the risk of an accident nor overridethe laws of physics. Driving safety systems aremerely aids designed to assist driving.
You are responsible for maintaining the distanceto the vehicle in front, for vehicle speed, forbraking in good time, and for staying in lane.Always adapt your driving style to suit the pre-vailing road and weather conditions and main-tain a safe distance from the vehicle in front.Drive carefully.
The driving safety systems described only workas effectively as possible when there is ade-quate contact between the tires and the roadsurface. Please pay special attention to thenotes on tires, recommended minimum tiretread depths, etc. (Ypage 291).
In wintry driving conditions, always use wintertires (M+S tires)and if necessary, snow chains.Only in this way will the driving safety systemsdescribed in this section work as effectively aspossible.
ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such a way thatthe wheels do not lock when you brake. Thisallows you to continue steering the vehicle whenbraking.
The%ABS warning lamp in the instrumentcluster lights up when the ignition is switchedon. It goes out when the engine is running.
ABS works from a speed of about 5 mph(8 km/h), regardless of road-surface conditions.ABS works on slippery surfaces, even when youonly brake gently.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 61).
GWARNING
If ABS is malfunctioning, the wheels could
lock when braking. The steerability and brak-
ing characteristics would be severely affec-
ted. There is an increased danger of skidding
and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,including driving safety systems, will alsobecome inoperative. Observe the informationon the ABS warning lamp (Ypage 222)and dis-play messages which may be shown in theinstrument cluster (Ypage 194).
Braking
XIf ABS intervenes:continue to depress thebrake pedal vigorously until the braking sit-uation is over.
XTo make a full brake application:depressthe brake pedal with full force.
If ABS intervenes when braking, you will feel apulsing in the brake pedal.
The pulsating brake pedal can be an indicationof hazardous road conditions, and functions as areminder to take extra care while driving.
BAS (Brake Assist System)
General information
BAS operates in emergency braking situations.If you depress the brake pedal quickly, BASautomatically boosts the braking force, thusshortening the stopping distance.
Driving safety systems61
Safety
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iCanada only: This device complies withRSS-210 of Industry Canada. Operation issubject to the following two conditions:
1. This device may not cause interference,and
2. This device must accept any interferencereceived, including interference that maycause undesired operation of the device.
Removal, tampering, or altering of the devicewill void any warranties, and is not permitted.Do not tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operate theequipment.
Important safety notes
GWARNING
Active Distance Assist DISTRONIC does not
react to:
Rpeople or animals
Rstationary objects in the road, e.g. stopped
or parked vehicles
Roncoming vehicles and crossing traffic
As a result, Active Distance Assist DISTRONIC
may neither give warnings nor intervene in
such situations. There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
GWARNING
Active Distance Assist DISTRONIC cannot
always clearly identify other road users and
complex traffic situations.
In such cases, Active Distance Assist
DISTRONIC can:
Rgive an unnecessary warning and then
brake the vehicle
Rneither give a warning nor intervene
Raccelerate or brake unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, especially if Active Distance Assist
DISTRONIC warns you.
GWARNING
Active Distance Assist DISTRONIC brakes
your vehicle with up to 50% of the maximum
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/or 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 the distanceto the vehicle in front, for vehicle speed, forbraking in good time and for staying in your lane.
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
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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 PilotDISTRONIC 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 when driving in the right-hand lanethat you overtake vehicles in the left-handlane
RBe so high in the left lane that you pass vehi-cles driving on the right
If there is a change of drivers, advise the newdriver of the speed stored.
Cruise control lever
CStores the current speed or a higher speed
DStores the current speed or a lower speed

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.
162Driving systems
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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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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
176Driving systems
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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