Ryou switch on the turn signals. In this event,the warnings are suppressed for a certainperiod of time.
Ra driving safety system intervenes, e.g. ABS,
BAS or ESP®.
Adaptive
WhenAdaptiveAdaptiveis selected, no warning vibra-tion occurs if:
Ryou switch on the turn signals. In this event,the warnings are suppressed for a certainperiod 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
Driving Assistance Plus package
General notes
The Driving Assistance Plus Package consists ofActive Distance Assist DISTRONIC(Ypage 162), Active Blind Spot Assist(Ypage 197) and Active Lane Keeping Assist(Ypage 200).
Active Blind Spot Assist
General notes
Active Blind Spot Assist monitors the areas oneither side of the vehicle that are not visible tothe driver with two lateral, rear-facing radar sen-sors. A warning lamp lights up in the exteriormirrors and draws your attention to vehicles
detected in the monitored area. If you thenswitch on the corresponding turn signal tochange lanes, you will also receive a visual warn-ing and hear a warning tone. If a risk of lateralcollision is detected, corrective braking mayhelp you avoid a collision. Before a course-cor-recting brake application, Active Blind SpotAssist evaluates the space in the direction oftravel and at the sides of the vehicle. For this,Active Blind Spot Assist uses the forward-facingradar sensors.
Active Blind Spot Assist supports you from aspeed of approximately 20 mph(30 km/h).
Important safety notes
Active Blind Spot Assist is only an aid and is nota substitute for attentive driving.
GWARNING
Active Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles which approach with a large speed
differential and overtake your vehicle
As a result, Active Blind Spot Assist may nei-
ther give warnings nor intervene in such sit-
uations. There is a risk of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
iUSA only: This device has been approved bythe FCC as a "Vehicular Radar System". Theradar sensor is intended for use in an auto-motive radar system only. Removal, tamper-ing, or altering of the device will void any war-ranties, and is not permitted by the FCC. Donot tamper with, alter, or use in any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operate theequipment.
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.
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If you select the reverse gear, Active Blind SpotAssist is not operational.
The brightness of the warning lamps is auto-matically adapted to the brightness of the sur-roundings.
When Active Blind Spot Assist is activated, grayradar waves propagating backward appear nextto the vehicle in the assistance display in themultifunction display. Above a speed of 20 mph(30 km/h), the color of the radar waves in theassistance display changes to green D. ActiveBlind Spot Assist is then ready for use.
Collision warning from visual warning and
warning tone
If you switch on the turn signal to change lanesand a vehicle is detected in the side monitoringrange, you receive a visual warning and a warn-ing tone as a collision warning. You will thenhear a double warning tone and red warninglamp Cflashes. If the turn signal remains on,detected vehicles are indicated by the flashingof red warning lamp C. No further warning tonesounds.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a lat-eral collision in the monitoring range, a course-correcting brake application is carried out. Thisis meant to assist you in avoiding a collision.
GWARNING
A course-correcting brake application cannot
always prevent a collision. There is a risk of an
accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake appli-
cation. Always maintain a safe distance at the
sides.
If a course-correcting brake application occurs,red warning lamp Cflashes in the exterior mir-ror and a double warning tone sounds. In addi-tion, a display underlining the danger of a sidecollision appears in the multifunction display.
In very rare cases, the system may make aninappropriate brake application. A course-cor-recting brake application may be interrupted atany time by countersteering slightly or acceler-ating.
The course-correcting brake application is avail-able in the speed range between 20 mph(30 km/h) and 120 mph (200 km/h).
Either no braking application, or a course-cor-recting brake application adapted to the drivingsituation occurs if:
Rthere are vehicles or obstacles, e.g. crashbarriers, located on both sides of your vehicle.
Ra vehicle approaches you too closely at theside.
Ryou have adopted a sporty driving style withhigh cornering speeds.
Ryou clearly brake or accelerate.
Ra driving safety system intervenes, e.g. ESP®
or PRE-SAFE®Brake.
RESP®is switched off
Ra loss of tire pressure or a defective tire isdetected.
Switching on Active Blind Spot Assist
XMake sure that Active Blind Spot Assist isactivated in the on-board computer(Ypage 220).
XSwitch on the ignition.Warning lamps Cin the exterior mirrors lightup red for approximately 1.5 seconds.
Gray radar waves propagating backwards Dappear next to the vehicle on the assistantdisplay on the multifunction display.
Above a speed of 20 mph (30 km/h), the colorof the radar waves on the assistant displaychanges to green D. Active Blind Spot Assistis then ready for use.
Towing a trailer
When you attach a trailer, make sure you havecorrectly established the electrical connection.This can be accomplished by checking the trailerlighting. Active Blind Spot Assist is then deacti-vated. Radar waves Dnext to the vehicle arehidden in the assistance graphic. TheActiveActiveBlind Spot Asst. Not Available WhenBlind Spot Asst. Not Available When
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TowingTowingaaTrailerTrailerSeeSeeOperator'sOperator'sManualManualmessage appears in the multifunction display.
Active Lane Keeping Assist
General notes
Active Lane Keeping Assist monitors the area infront of your vehicle by means of multifunctioncamera Cat the top of the windshield. Variousdifferent areas to the front, rear and side of yourvehicle are also monitored with the aid of theradar sensor system. Active Lane KeepingAssist detects lane markings on the road andcan warn you before you leave your lane unin-tentionally. If you do not react to the warning, alane-correcting application of the brakes canbring the vehicle back into the original lane.
This function is available in the range between40 mph and 120 mph (60 km/h and 200 km/h).
Important safety notes
If you fail to adapt your driving style, Active LaneKeeping Assist can neither reduce the risk of anaccident nor override the laws of physics. ActiveLane Keeping Assist cannot take account ofroad and weather conditions. It may not recog-nize traffic situations. Active Lane KeepingAssist is only an aid. You are responsible for thedistance to the vehicle in front, for vehiclespeed, for braking in good time and for staying inyour lane.
Active Lane Keeping Assist cannot continuouslykeep your vehicle in its lane.
GWARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
Rgive an unnecessary warning and then
make a course-correcting brake application
Rneither give a warning nor intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you. Ter-
minate the intervention in a non-critical driv-
ing situation.
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
Rthe radar sensors in the front or rear bumpersor the radiator trim are dirty, e.g. obscured bysnow
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
If no vehicle is detected in the adjacent lane andbroken lane markings are detected, no lane-cor-recting brake application is made.
Warning vibration in the steering wheel
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.
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Lane-correcting brake application
If you leave your lane, under certain circumstan-ces the vehicle will brake briefly on one side.This is meant to assist you in bringing the vehicleback to the original lane.
GWARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original
lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
If a lane-correcting brake application occurs,display Cappears in the multifunction display.The brake application also slightly reduces vehi-cle speed.
A lane-correcting brake application can be madeafter driving over a lane marking recognized asbeing solid or broken. Before this, a warningmust be given by means of intermittent vibrationin the steering wheel. In addition, a lane withlane markings on both sides must have beendetected.
In the case of a broken lane marking beingdetected, a lane-correcting brake applicationcan only be made if a vehicle has been detectedin the adjacent lane. Oncoming vehicles, over-taking vehicles and vehicles in adjacent lanescan be detected.
A further lane-correcting brake application canonly occur after your vehicle has returned to theoriginal lane.
No lane-correcting brake application occurs if:
Ryou clearly and actively steer, brake or accel-erate
Ryou cut the corner on a sharp bend
Ryou have switched on the turn signal
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist
Ryou have adopted a sporty driving style withhigh cornering speeds or high rates of accel-eration
RESP®is switched off
Rthe transmission is not in position [
Ron vehicles with a trailer tow hitch, the elec-trical connection to the trailer has been cor-rectly established
Ra loss of tire pressure or a defective tire hasbeen detected and displayed.
Ran obstacle has been detected in the lane inwhich you are driving
Active Lane Keeping Assist may not detect otherroad users or traffic situations. An inappropriatebrake application may be interrupted at any timeif you:
Rsteer slightly in the opposite direction
Rswitch on the turn signal
Ryou brake or accelerate significantly.
A lane-correcting brake application is interrup-ted automatically if:
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist
Rlane markings are no longer detected
Activating/deactivating Active Lane
Keeping Assist
XTo activate:press button D.
Indicator lamp Clights up. TheLane Keep‐Lane Keep‐ingingAssistAssistOnOnmessage appears in the mul-tifunction display. If all conditions have beensatisfied, a warning or steering interventionmay be made.
If you drive at speeds above 40 mph(60 km/h) and lane markings are detected,
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