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3 - Auto-brake
The automatic braking function is activated at thelast moment.
If the driver has not taken evasive action by thisstage and a collision is imminent, the automaticbraking function will be triggered. This occurswhether or not the driver is pressing the brakepedal. Full braking force will be applied to reducethe speed at impact or reduced braking effect willbe applied if this is sufficient to avoid the colli-sion.
The seat belt tensioner may be activated whenthe automatic braking function is triggered.
In certain situations, auto-braking may begin witha limited braking force before applying full brak-ing force.
If City Safety has prevented a collision, the vehi-cle will be kept at a standstill until the drivertakes action. If the vehicle has slowed to avoidcolliding with a slower-moving vehicle ahead, yourspeed will be reduced to that vehicle's speed.
Auto-braking can always be cancelled if thedriver presses hard on the accelerator pedal.
NOTE
When City Safety activates the brakes, thebrake lights come on.
When City Safety applies the brakes, a text mes-sage will appear in the instrument panel to notifythe driver that the function is/was activated.
WARNING
City Safety may not be used to change howthe driver operates the vehicle. The drivermust not only rely on City Safety to brake thevehicle.
Related information
City Safety™ (p. 305)
Head-up display* (p. 140)
Seat belt tensioners (p. 50)
Setting a warning distance for CitySafety
City Safety is always active, but the function'swarning distance can be adjusted.
NOTE
The City Safety function cannot be deacti-vated. It is activated automatically each timethe engine/electric motor is started.
The alert distance determines the sensitivity ofthe system and regulates the distance at whichthe light, sound and brake pulsations will be acti-vated.
To select warning distance:
1.Select SettingsMy CarIntelliSafe inthe center display's Top view.
2.Under City Safety Warning, tap Late,Normal or Early to set the desired warningdistance.
If the driver feels that the Early setting is givingtoo many warnings or finds them irritating, theNormal or Late warning distance settings canbe selected instead.
If the driver feels that the warnings are too fre-quent and distracting, the warning distance canbe reduced. This will reduce the total number ofwarnings, but it will also result in City Safety pro-viding warnings at a later stage.
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The Late warning distance setting should there-fore only be used in exceptional cases, such aswhen a more dynamic driving style is preferred.
WARNING
No automatic system can guarantee100% correct function in all situations.You should therefore never test use ofCity Safety in the direction of people, ani-mals or vehicles – this could lead tosevere damage, serious personal injury oreven death.
City Safety warns the driver if there is arisk of collision, but the function cannotreduce the driver's reaction time.
Even if the warning distance has been setto Early, warnings may be perceived aslate in certain situations – e.g. when thereare large speed differences or if the vehi-cle ahead suddenly brakes heavily.
With the warning distance set to Early,warnings come further in advance. Thismay cause the warnings to come morefrequently than with warning distanceNormal, but is recommended since it canmake City Safety more effective.
NOTE
The warning with direction indicators for RearCollision Warning is deactivated if the colli-sion warning distance in the City Safety func-tion is set to the lowest level "Late".
The seat belt tensioning and braking func-tions remain active.
Related information
City Safety™ (p. 305)
Rear Collision Warning (p. 320)
Detecting obstacles with City Safety
City Safety can help the driver detect other vehi-cles, cyclists, large animals and pedestrians.
Vehicles
City Safety can detect most vehicles that are sta-tionary or are moving in the same direction asyour vehicle. In some cases, it can also detectoncoming vehicles and crossing traffic.
For City Safety to be able to detect a vehicle inthe dark, its headlights and taillights must be onand clearly visible.
Cyclists
Optimal examples of what City Safety would interpret tobe a cyclist: clear body and bicycle shapes.
For optimal performance, the system's functionfor cyclist detection needs the clearest possibleinformation about the contours of the bicycle andof the cyclist's head, arm, shoulders, legs, torso
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WARNING
The driver support system only issues a warn-ing for obstacles detected by its radar sensor– thus, a warning may come after a delay ornot at all.
Never wait for a warning or assistance.Apply the brakes when necessary.
WARNING
The function is supplementary driver sup-port intended to facilitate driving and helpmake it safer – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion.
Driver support functions are not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
Related information
City Safety™ (p. 305)
Limitations of City Safety in crossing traffic(p. 312)
Limitations of City Safety incrossing traffic
In certain situations, it may be difficult for CitySafety to help the driver avoid a collision withcrossing traffic.
For example:
on slippery roads when Electronic StabilityControl (ESC) is actively operating
if an approaching vehicle is detected at a latestage
if the oncoming vehicle is partially obstructedby another vehicle or object
if the oncoming vehicle's headlights are off
if the oncoming vehicle is moving erraticallyand e.g. suddenly changes lanes at a latestage.
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Related information
City Safety™ (p. 305)
City Safety steering assistance limitationsduring evasive maneuvers (p. 314)
City Safety steering assistancelimitations during evasivemaneuvers
City Safety steering assistance may have limitedfunctionality in certain situations and not inter-vene, e.g.:
at speeds outside the range of 50-100 km/h(30-62 mph)
if the driver does not take evasive action
if speed-dependent power steering wheelresistance is working at reduced power – e.g.during cooling due to overheating.
NOTE
The function uses the vehicle's camera andradar sensor, which has certain general limita-tions.
Related information
City Safety steering assistance for evasivemaneuver (p. 313)
City Safety limitations (p. 316)
Speed-dependent steering wheel resistance(p. 260)
Camera/radar sensor limitations (p. 300)
City Safety and delayed evasivemaneuvers
City Safety can assist the driver by automaticallybraking the vehicle when it is not possible toavoid a collision by steering alone.
City Safety assists the driver by periodicallyattempting to predict possible "escape routes" tothe sides of the vehicle in the event a slow-mov-ing or stationary vehicle were to be detected at alate stage.
Your vehicle (1) cannot detect any potential escaperoutes for veering away from the vehicle ahead (2) andmay therefore apply the brakes at an earlier stage.
Own vehicle
Slow-moving/stationary vehicles
City Safety will not intervene to automaticallyapply the brakes if it is possible for the driver toavoid a collision by steering the vehicle.
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However, if City Safety determines that an eva-sive maneuver would not be possible due to traf-fic in the adjacent lane(s), the function can assistthe driver by automatically starting to apply thebrakes at an earlier stage.
WARNING
The function is supplementary driver sup-port intended to facilitate driving and helpmake it safer – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion.
Driver support functions are not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
NOTE
The function uses the vehicle's camera andradar sensor, which has certain general limita-tions.
Related information
City Safety™ (p. 305)
City Safety limitations (p. 316)
Camera/radar sensor limitations (p. 300)
City Safety braking for oncomingvehicles
City Safety can help you apply the brakes for anoncoming vehicle in your lane.
If an oncoming vehicle veers into your lane and acollision is unavoidable, City Safety can helpreduce your vehicle's speed to attempt to miti-gate the force of the collision.
Own vehicle
Oncoming vehicles
The following criteria must be met for the func-tion to work:
your vehicle's speed must be above 4 km/h(3 mph)
the road must be straight
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your lane must have clear side lane markings
your vehicle must be positioned straight inyour lane
the oncoming vehicle must be positionedwithin your vehicle's lane markings
the oncoming vehicle's headlights must beon
the function can only handle “front-to-front”collisions
the function can only detect vehicles withfour wheels.
NOTE
The function uses the vehicle's camera andradar sensor, which has certain general limita-tions.
WARNING
The driver support system only issues a warn-ing for obstacles detected by its radar sensor– thus, a warning may come after a delay ornot at all.
Never wait for a warning or assistance.Apply the brakes when necessary.
WARNING
The function is supplementary driver sup-port intended to facilitate driving and helpmake it safer – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion.
Driver support functions are not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
Related information
City Safety™ (p. 305)
City Safety limitations (p. 316)
Camera/radar sensor limitations (p. 300)
City Safety limitations
City Safety48 functionality may be reduced incertain situations.
Surroundings
Low objects
Hanging objects, such as flags for overhangingloads or accessories such as auxiliary lights orfront protective grids that extend beyond theheight of the hood, may limit City Safety function-ality.
Slippery road conditions
The extended braking distance on slippery roadsmay reduce City Safety's capacity to help avoid acollision. In these types of situations, the Anti-lock Braking System and Electronic Stability Con-
trol (ESC49) will help provide optimal brakingpower with maintained stability.
Backlighting
The visual warning signal in the windshield maybe difficult to detect in bright sunlight, if there arereflections, or if the driver is wearing sunglassesor not looking straight ahead.
Heat
If the temperature in the passenger compartmentis high due to e.g. bright sunlight, the visual warn-ing signal in the windshield may be temporarilydisabled.
48This function is not available on all markets.49Electronic Stability Control
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Rear Collision Warning51
The Rear Collision Warning52 (RCW) functioncan help the driver avoid rear-end collisions fromvehicles approaching from behind.
The function is automatically activated each timethe engine is started.
The function can alert drivers of following vehi-cles of the risk of a collision by rapidly flashingthe turn signals.
If, at a speed below 30 km/h (20 mph), the func-tion detects that the vehicle is in danger of beinghit from behind, the seatbelt tensioners may ten-sion the front seat belts and activate theWhiplash Protection System safety system.
Immediately before a collision from behind, thefunction may also activate the brakes in order toreduce the forward acceleration of the vehicleduring the collision. However, the brakes will onlybe applied if your vehicle is stationary. The brakeswill be immediately released if the acceleratorpedal is depressed.
Related information
Driver support systems (p. 260)
Rear Collision Warning limitations (p. 320)
Whiplash Protection System (p. 46)
Rear Collision Warning53 limitations
In some situations, it may be difficult for RearCollision Warning (RCW) to warn the driver of acollision risk.
This may be the case if:
the vehicle approaching from the rear isdetected at a late stage
the vehicle approaching from the rearchanges lanes at a late stage
a trailer, bicycle holder or similar is con-nected to the vehicle's electrical system - thefunction will then be automatically deacti-vated.
NOTE
In certain markets RCW does not warn withthe direction indicators due to local trafficregulations – in such cases, that part of thefunction is deactivated.
NOTE
The warning with direction indicators for RearCollision Warning is deactivated if the colli-sion warning distance in the City Safety func-tion is set to the lowest level "Late".
The seat belt tensioning and braking func-tions remain active.
Related information
Rear Collision Warning (p. 320)
51RCW: Warning of collision from the rear.52This function is not available on all markets.53RCW: Warning of collision from the rear.
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Cross Traffic Alert60*
Cross Traffic Alert(CTA) is a supplementary
driver support system to BLIS61 that is intendedto help the driver detect vehicles crossingbehind the vehicle while backing up.
The auto-brake subfunction can stop the car inthe event of a risk of collision with an unob-served vehicle.
CTA overview
CTA supplements BLIS by detecting traffic cross-ing from the side, e.g. when backing out of aparking space.
CTA is primarily designed to detect vehicles, butin certain cases can also detect pedestrians orsmaller objects such as bicycles.
CTA is only active when the vehicle is movingbackward or if reverse gear is engaged.
If CTA detects that something is approachingyour vehicle from the side:
an audible signal will sound from either theleft or right speaker, depending on whichside of your vehicle the object is approachingfrom.
an icon will illuminate in the Park AssistSystem graphic on the screen.
an icon will appear in the Park Assist Cam-era's Top view.
Illuminated CTA icon in the Park Assist Systemgraphic on the screen.
If the driver does not pay attention to thewarning from CTA and a collision is unavoid-
able, the auto brake function will interveneto stop the vehicle and a text will be shownon the instrument panel to explain why thevehicle was braked.
WARNING
The auto-brake sub-function can only detectand apply the brakes for other moving vehi-cles – not for e.g. stationary obstacles, cyclistsor pedestrians.
60Warning for crossing traffic when the vehicle is backing up.61Blind Spot Information