brake sensor MERCEDES-BENZ CLS-Class 2014 W218 Owner's Manual

Parking brake
................................ 169
Warning lamp ................................. 266
Breakdown
see Flat tire
see Towing away
Bulbs
see Changing bulbs C
California Important notice for retail
customers and lessees ....................23
Calling up amalfunction
see Display messages
Care
Carpets .......................................... 318
Carw ash. ....................................... 311
Display ........................................... 315
Exhaus tpipe .................................. 315
Exterior lights ................................ 314
Gea rors electo rlever .................... 316
Interior ........................................... 315
Matte finish ................................... 313
Nigh tView Assist Plus ...................316
Notes ............................................. 311
Paint .............................................. 313
Plastic trim .................................... 316
Power washer ................................ 312
Rea rview camera .......................... 315
Roo flining ...................................... 318
Seat bel t........................................ 317
Seat cover ..................................... 317
Sensors ......................................... 315
Steering wheel ............................... 316
Trim pieces .................................... 316
Washing by hand ........................... 312
Wheels ........................................... 314
Windows ........................................ 314
Wiper blades .................................. 314
Wooden trim .................................. 316
Cargo tie dow nrings ......................... 282
Car wash (care) ................................. 311
CD player/CD changer (on-board
computer) .......................................... 225Center console
Lowe rsection .................................. 35
Lowe rsection (AMG vehicles) ..........36
Uppe rsection .................................. 34
Central locking
Automatic locking (on-board
computer) ...................................... 232
Locking/unlocking (SmartKey) ........76
Changing bulbs
Important safety notes ..................124
Overview of bul btypes .................. 125
Reversing lamps ............................ 125
Child-proof locks
Important safety notes ....................64
Rea rdoors ....................................... 65
Children
In the vehicle ................................... 60
Restraint systems ............................ 60
Specia lseat belt retractor ...............63
Child seat
LATCH-typ e(ISOFIX) chil dseat
anchors ............................................ 63
Top Tether ....................................... 64
Cigarette lighter ................................ 288
Cleaning Mirro rturn signal ........................... 314
Climate control
Automatic climate control (3-
zone) .............................................. 134
Controlling automatically ...............137
Cooling with aird ehumidification..136
Defrosting the windows .................140
Defrosting the windshield ..............139
Dual-zone automatic climate
control ........................................... 131
Important safety notes ..................130
Indicator lamp ................................ 137
Information about using dual-zone
automatic climate control ..............132
Information on using 3-zone
automatic climate control ..............135
Maximum cooling .......................... 139
Overview of systems ......................130
Problems with cooling with air
dehumidification ............................ 137
Problem with the rear window
defroster ........................................ 141
Rea rcontrol panel ......................... 1346
Index

Operator'
sManual
Vehicle equipment ...........................22
Outside temperature display ...........220
Overhead control panel ......................37
Override feature Rea rside windows ........................... 65P
Pain tcode number ............................ 372
Paintwork (cleaning instructions) ...313
Pani calarm .......................................... 40
Parking ............................................... 167
Important safety notes ..................167
Parking brake ................................ 169
Position of exterio rmirror, front-
passenger sid e............................... 111
Rea rview camera .......................... 199
see PARKTRONIC
Parking aid
Active Parking Assist .....................196
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 240
Notes/function .............................. 169
Warning lamp ................................. 272
Parking lamps
Switching on/off ........................... 118
PARKTRONIC
Deactivating/activating .................195
Driving system ............................... 193
Function/notes ............................. 193
Important safety notes ..................193
Problem (malfunction) ...................196
Range of the sensors .....................194
Warning displa y............................. 195
PAS SAIRBAG OFF
se eP ASSENG ER AIRBAG OFF
PASSENGER AIR BAG OFF
Indicato rlamp .................................. 47
Problem s(malfunction) .................. 244
Plastic trim (cleaning instructions) .316
Power washers .................................. 312
Power windows see Side windows PRE-SAFE
®
(anticipatory occupant
protection) Display message ............................ 241
Operation ........................................ .54
PRE-SAFE ®
Brake
Activating/deactivating .................228
Display message ............................ 241
Function/notes ................................ 72
Warning lamp ................................. 275
Produc tinformation ............................ 21
Program selector button ..................159
Protection of the environment General notes .................................. 21
Pulling away (automatic
transmission) ..................................... 150 Q
Qualifie dspecialis tworkshop ...........26 R
RAC ESTART (AMG vehicles) .............188
RACETIME R(on-board computer) ....235
Radar sensor system Activating/deactivating .................232
Display message ............................ 252
Radio
Selecting astation ......................... 225
see separate operating instructions
Radio-based vehiclec omponents
Declaratio nofconformity ................ 25
Readin glamp ..................................... 123
Rear compartment Setting the airv ents...................... 143
Rear fog lamp
Display message ............................ 246
Rear seat (foldin gthe backrest
forwards/back) ................................. 281
Rear seats Display message ............................ 261
Rear vie wcamera
Cleaning instructions .....................315
Function/notes ............................. 199
Switching on/off ........................... 200
Rear-vie wmirror
Dipping (automatic) .......................111
Rear window blind ............................28714
Index

Rear windo
wdefroster
Problem (malfunction) ...................141
Switching on/off ........................... 140
Refrigerant (air-conditioning
system)
Important safety notes ..................378
Refueling
Fuel gauge ............................... 31, 219
Important safety notes ..................164
Refueling proces s.......................... 165
see Fuel
Remote control
Garage door opene r....................... 299
Programming (garage door
opener) .......................................... 299
Reportin gsafety defects ....................26
Reserve (fue ltank)
see Fuel
Reserve fuel
Display message ............................ 251
Warning lamp ................................. 273
see Fuel
Residual heat (climate control) ........141
Reverse gear (selector lever) ...........155
Reversing feature Side windows ................................... 88
Sliding sunroo f................................. 93
Reversing lamps (display
message) ............................................ 246
Roadside Assistanc e(breakdown) ....23
Roller sunblind Rea rwindow .................................. 287
Roof carrier ........................................ 283
Roof lining and carpets (cleaning
guidelines) ......................................... 318
Roof load (maximum) ........................379 S
Safety Childre ninthe vehicle ..................... 60
Child restraint systems ....................60
Occupant Classification System
(OCS) ............................................... 47
Seat belts
Adjusting the driver's and front-
passenger sea tbelt ......................... 57
Adjusting the height ......................... 58 Belt force limiters
............................ 59
Cleaning ......................................... 317
Correct usage .................................. 56
Emergency Tensioning Devices ....... .59
Fastening ......................................... 56
Important safety guidelines .............55
Releasing ......................................... 58
Safety guidelines ............................. 41
Switching bel tadjustment on/off
(on-board computer) ......................233
Warning lamp ................................. 265
Warning lamp (function) ................... 58
Seats
Adjusting (electrically). ..................100
Adjusting the 4-way lumbar
support .......................................... 103
Adjusting the active multicontour
sea t............................................... 103
Adjusting the hea drestraint .......... 100
Adjusting the multicontour sea t..... 102
Cleaning the cover .........................317
Correct driver's sea tposition ........... 98
Important safety notes ....................99
Massag efunction .......................... 103
Overview .......................................... 99
Seat backrest displa ymessage .....261
Seat heating problem ....................105
Seat ventilation problem ................106
Storing settings (memory
function) ........................................ 112
Switching sea theating on/off .......104
Switching sea tventilation on/off ..105
Selector lever
Cleaning ......................................... 316
Sensors (cleaning instructions) .......315
Service menu (on-board computer) .229
Service products Brake fluid ..................................... 376
Coolant (engine) ............................ 377
Engine oil ....................................... 375
Fuel ................................................ 374
Important safety notes ..................373
Refrigerant (air-conditioning
system) .......................................... 378
Washer fluid .................................. .378
Settings
Factory (on-board computer) .........234
On-board computer .......................229 Index
15

Genuine Mercedes-Benz parts
H
Environmental note
Daimle rAGalso supplie sreconditioned major
assemblies and part swhicha re of th esame
qualit yasn ew parts. They are covered by the
same Limite dWarrant yentitlements as new
parts.
! Air bags and Emergenc yTensioning
Devices, as well as control unit sand
sensor sfor these restraint systems ,may be
installe dinthefollowin gareas of your
vehicle:
R doors
R door pillars
R door sills
R seats
R cockpit
R instrumen tcluster
R cente rconsole
Do no tinstall accessorie ssuchasa udio
system sintheseareas. Do not carry out
repairs or welding .You could impair the
operating efficienc yofthe restraint
systems.
Have aftermarket accessories installed at
aq ualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels
as well as accessories relevant to safety
which have not been approved by Mercedes.
This could lead to malfunctions in safety-
relevant systems, e.g. the brake system. Use
only genuine Mercedes-Benz parts or parts of
equal quality. Only use tires, wheels and
accessories that have been specifically
approved for your vehicle.
Genuine Mercedes-Benz parts are subject to
strictq ualitycontrol. Every part ha sbeen
specifically developed ,manufactured or
selected for and adapted to Mercedes-Benz
vehicles. Only genuine Mercedes-Benz parts
should therefore be used. More than 300,000 different genuine
Mercedes-Benz parts are available for
Mercedes-Benz models.
All authorized Mercedes-Benz Centers
maintai
nasupply of genuine Mercedes-Benz
parts for necessary service and repair work.
In addition, strategically located parts
delivery centers provide quick and reliable
parts service.
Alwayss pecify the vehicle identification
number (VIN) (Y page 372) and the engine
number (Y page 373) when ordering genuine
Mercedes-Benz parts. Operator's Manual
Vehicle equipment
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of going to
print. Country-specific differences are
possible.B ear in mind that your vehicle may
not feature all function sdescribed here. This
also applies to safety-relevant systems and
functions. The equipment in your vehicle may
therefore differ from that shown in the
descriptions and illustrations.
The original purchase agreement lists all
systems installed in your vehicle.
Should you have any questions concerning
equipment and operation ,please consult an
authorized Mercedes-BenzC enter.
The Operator's Manual and Maintenance
Booklet are important documents and should
be kept in the vehicle. 22
Introduction

tota
lavailable propellant gas, thereby
reducing the risk of injury .Ifthe ai rbag
control uni trecognize swithi naf ew
milliseconds tha tthe vehicle is being braked
or accelerated faster than originally
predicted, the front air bag is filled with the
maximum amount of propellant gas available.
The deployment of the front-passenger front
air bag is also influenced by the weight
category of the front passenger, which is
determined by the Occupant Classification
System (OCS) (Y page 47).
The lighter the passenger-side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second-stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations where alow impact severity is
predicted. You will then be protected by the
fastened seat belt.
The front-passenger front air bag will only
deploy if:
R the system, based on the OCS weight
sensor readings, detectst hat the front-
passenger seat is occupied
R the PASSENGER AIR BAG OFF indicator
lamp on the center console is not lit
(Y page 47)
R the air bag control unit predicts ahigh
impact severity
Knee bags Driver's knee bag
001Adeploysu nderneath the
steering column and front-passenger knee
bag 0010underneath the glove box. They
deploy together with the front air bags. They
are designed to operate together with the
front air bags in frontal impacts if certain
thresholds are exceeded. The knee bags
operate at best in conjunction with correctly
positioned and fastened seat belts.
Knee bags provide increased protection for
the driver and front passenger against the risk
of:
R knee injuries
R thigh injuries
R lower leg injuries
Side impact air bags G
WARNING
Using unsuitable seat covers could restrict or
even prevent deployment of the air bags
integrated into the seats. Consequently, the
air bags cannot protect vehicle occupants as
they are designed to do. In addition, the
function of the air bag deactivation system
could be restricted. This poses an increased
risk of injury or even fatal injury.
You should only use seat covers that have
been approved for the respective seat by
Mercedes-Benz. G
WARNING
Sensors to control the air bags are located in
the doors. Modifications or work not
performed correctly to the doors or door
paneling, as well as damaged doors, can lead
to the function of the sensors being impaired.
The air bags might therefore not function
properly any more. Consequently, the air bags
cannot protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door
paneling carried out at aqualified specialist
workshop. Occupant safety
45Safety Z

ABS works fro
maspeed of abou t5mph
(8 km/h )upwar ds,regardless of road-surface
conditions .ABS works on slippery surfaces,
eve nify ou only brake gently.
The yellow 001CABS warning lamp in the
instrument cluster lights up when the ignition
is switched on. It goes out when the engine is
running.
Braking X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking
situation is over.
X To makeaf ull brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel
ap ulsing in the brake pedal.
The pulsating brake pedal can be an
indication of hazardous road conditions, and
functions as areminder to take extrac are
while driving. BAS (Brake Assist System)
i Observe the "Important safety notes"
section (Y page 66). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergenc ybraking situation is
increased. There is arisk of an accident.
In an emergenc ybraking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
BAS operates in emergenc ybraking
situations. If you depress the brake pedal
quickly, BAS automatically boosts the braking
force, thus shortening the stopping distance.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. BAS PLUS (Brake Assist System
PLUS)
General information i
Observe the "Important safety notes"
section (Y page 66).
BAS PLUS is only available in vehicles
equipped with DISTRONIC PLUS.
For BAS PLUS to assist you when driving, the
radar sensor system must be:
R activated (Y page 232)
R operational
With the help of the radar sensor system, BAS
PLUS can detect obstacles that are in the
path of your vehicle for an extended period of
time.
If the radar sensor system is malfunctioning,
BAS PLUS will not be available. The brake
system is still available with complete brake
boosting effect and BAS.
BAS PLUS provides braking assistance in
hazardous situations at speeds greater than
4m ph (7 km/h).
At speeds of up to approximately 40 mph
(70 km/h) ,BAS PLUS can also react to
stationary objects. Examples of stationary
object sare stopped or parked vehicles.
Important safety notes G
WARNING
BAS PLUS cannot alwaysc learly identify
object sand complex traffic situations. BAS
PLUS cannot intervene in these cases. There
is ar isk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake. G
WARNING
BAS PLUS does not react:
R to people or animals
R to oncoming vehicles
R to crossin gtraffic
R when cornering Driving safety systems
67Safety
Z

As
aresult, BAS PLUS may not intervene in all
critical situations. There is arisk of an
accident.
Always pay careful attention to the traffic
situation and be ready to brake.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensor soranythin gelse
covering the sensors
R snow or heavy rain
R interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R an arrow vehicle travelin ginfront, e.g. a
motorbike
R av ehicle travelin ginfrontonad ifferent line
relative to the center of your vehicle
Following damage to the fron tend of the
vehicle, have the configuratio nand operation
of the rada rsensor schecked at aqualified
specialist workshop. This also applies to
collisions at low speeds where ther eisno
visible damage to the fron tofthe vehicle.
Braking assistance To prevent
acollision with the vehicle in front,
BAS PLUS calculates the brake force
necessary if:
R you approach an obstacle, and
R BAS PLUS has detected arisk of collision
When driving at aspeed under 20 mph
(30 km/h):ify ou depress the brake pedal,
BAS PLUS is activated. The increase in brake
pressure will be carried out at the last
possible moment.
When driving at aspeed greater than
20 mph (30 km/h):ify ou depress the brake
pedal sharply, BAS PLUS automatically raises
the brake pressure to avalue adapted to the
traffic situation.
If BAS PLUS demands particularly high
braking force, preventative passenger protection measures (PRE-SAFE
®
)a re
activated simultaneously.
X Keep the brake pedal depressed until the
emergenc ybraking situation is over.
ABS prevent sthe wheels from locking.
BAS PLUS is deactivated and the brakes
function as usual if:
R you release the brake pedal
R there is no longer arisk of collision
R no obstacle is detected in front of your
vehicle ESP
®
(Electronic Stability Program)
Important safety notes i
Observe the "Important safety notes"
section (Y page 66). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further
driving safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
! Vehicles with 4MATIC: switch off the
ignition when the parking brake is being
tested on abrake dynamometer.
Application of the brakes by ESP ®
may
otherwise destroy the brake system.
Vehicles without 4MATIC: observe the notes
on ESP ®
(Y page 330) when towing the
vehicle with araised rear axle.
ESP ®
is deactivated if the 0009warning lamp
in the instrument cluster lights up
continuously when the engine is running.
If the 0011 warning lamp and the 0009
warning lamp are lit continuously, ESP ®
is not
available due to amalfunction.
Observe the information on warning lamps
(Y page 269) and display messages which
may be shown in the instrument cluster
(Y page 238). 68
Driving safety systemsSafety

ADAPTIVE BRAKE
ADAPTIV EBRAKE enhance sbraking safety
and offers increased braking comfort .In
addition to th ebraking function ,ADAPT IVE
BRAKE also has th eHOLDf unction
(Y page 186) and hill start assist
(Y page 150). PRE-SAFE
®
Brake
Genera linformation i
Observ ethe "Importan tsafet ynotes"
sectio n(Ypage 66).
PRE-SAFE ®
Brak eiso nly available in vehicles
with DISTRONIC PLUS.
If PRE-SAFE ®
Brak eistoa id you, the radar
senso rsystem mus tbe:
R activated (Y page 232)
R operational
With the help of the radar sensor system,
PRE-SAFE ®
Brak ecan detec tobstacles that
are in fron tofyour vehicle for an extended
period of time.
PRE-SAFE ®
Brak ecan help you to minimize
the risk of acollision with avehicle ahead or
reduce the effects of such acollision. If PRE-
SAFE ®
Brak ehas detected arisk of collision,
you will be warned visually and acoustically
as well as by automatic braking. PRE-SAFE ®
Brak ecannot preven tacollision withou tyour
intervention.
At speeds of up to approximately 40 mph
(70 km/h) PRE-SAFE®
Brake can also detect
stationary objects. Examples of stationary
object sare stopped or parked vehicles.
Important safety notes G
WARNING
PRE-SAFE ®
Brake will initially brake your
vehicle by apartial application of the brakes
if ad anger of collision is detected. There may
be acollision unless you also brake. Automatic emergenc
ybraking cannot prevent
ac ollision. There is arisk of an accident.
Always apply the brakes yourself and try to
take evasive action. G
WARNING
PRE-SAFE ®
Brake cannot alwaysc learly
identify objects and comple xtraffic
conditions.
In these cases, PRE-SAFE ®
Brake may:
R give an unnecessary warning and then
brake the vehicle
R not give awarning or intervene
There is arisk of an accident.
Always pay particular attention to the traffic
situation and be read ytobrake, especially if
PRE-SAFE ®
Brake warns you.T erminate the
intervention in anon-critical driving situation.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or anything else
covering the sensors
R snow or heavy rain
R interference by other rada rsources
R there are strongr adar reflections, for
example in parking garages
R an arrow vehicle traveling in front,e .g. a
motorbike
R av ehicle traveling in front on adifferent line
relative to the center of your vehicle G
WARNING
PRE-SAFE ®
Brake does not react:
R to people or animals
R to oncoming vehicles
R to crossin gtraffic
R when cornering
As aresult, PRE-SAFE ®
Brake may neither
give warnings nor intervene in all critical
situations. There is arisk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake. 72
Driving safety systemsSafety

In order to maintain the appropriat
edistance
to the vehicle in front and thus prevent a
collision, you must apply the brakes yourself.
Due to the nature of the system, particularly
complicated driving conditionsm ay cause
unnecessar ywarning sortheunnecessary
intervention of PRE-SAFE ®
Brake.
Followin gdamag etothe front end of the
vehicle, have the configuratio nand operation
of the rada rsensor schecked at aqualified
specialist workshop. This also applies to
collisions at low speeds where ther eisno
visible damage to the fron tofthe vehicle.
Function X
To activate/deactivate: activate or
deactivate PRE-SAFE ®
Brake in the on-
board computer (Y page 228).
If the PRE-SAFE ®
Brake is not activated, the
0001 symbol appears in the multifunction
display.
If you approach avehicle in front very quickly,
this function warns you from aspeed of
approximately 4mph (7 km/h). An
intermittent warning tone sounds and the
0008 distance warning signal lamp in the
instrumentc luster lightsup.
X Brake immediately to defuse the situation.
or
X Take evasiv eaction provided it is safe to do
so.
Fro mas peed of approximately 4mph
(7 km/h), if the driver and fron tpassenger
have fastened their seat belts, PRE-SAFE ®
Brak ecan brake the vehicle automatically at
speeds up to approximately 124 mph
(200 km/h).
You can preven tthe intervention of the PRE-
SAFE ®
Brak eata ny time by:
R depressin gthe accelerator pedal further.
R activating kickdown.
R releasing the brake pedal. The brakin
gaction of PRE-SAFE ®
Brak eis
ended automatically if:
R you maneuver to avoid the obstacle.
R ther eisnol onger any danger of arear-end
collision.
R ther eisnol onger an obstacle detected in
fron tofy our vehicle.
If you approach an obstacle and PRE-SAFE ®
Brak edetects arisk of acollision, the system
will alert you both visually and acoustically. If
you do not brake or tak eevasive action ,the
system will warn you by automatically braking
the vehicle gently. If ther eisanincreased risk
of collision, preventative passenger
protection measures (PRE-SAFE ®
)a re
activated (Y page 54). Ifarisk of collision
remains at speeds of over 20 mph
(30 km/h) and you do not brake, tak eevasive
action or significantly accelerate, automatic
brakin gmay be performed up to and including
emergency braking. Automatic emergency
brakin gisnot performed until immediately
prior to an acciden tthat can no longer be
avoided. Thef
tdeterrent locking system Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
X To activate with the SmartKey: remove
the SmartKey from the ignition lock.
X To activate with KEYLESS-GO: switchthe
ignition off and open the driver' sdoor.
X To deactivate: switchont he ignition.
When leaving the vehicle, always tak ethe
SmartKey with you and lock the vehicle.
Anyone can start the engin eifavalid
SmartKey has been left inside the vehicle.
i The immobilizer is always deactivated
when you start the engine.
In the event that the engin ecannot be
started when the starter battery is fully
charged, the immobilizer may be faulty. Theft deterrent locking system
73Safety Z

As
aresult, DISTRONI CPLUSm ay neither give
warning snor interv eneins uchs ituations.
There is ariskofana ccident.
Alway spaycarefu lattentio ntothe traffic
situatio nand be ready to brake. G
WARNING
DISTRONIC PLU Scanno talway sclearly
identify othe rroad users and complex traffic
situations.
In such cases, DISTRONIC PLUS may:
R give an unnecessary warning and then
brake the vehicle
R neither give awarning nor intervene
R accelerate unexpectedly
There is arisk of an accident.
Continue to drive carefully and be ready to
brake, in particular when warned to do so by
DISTRONIC PLUS. G
WARNING
DISTRONIC PLUS brakes your vehicle with up
to 40% of the maximum braking force. If this
braking force is insufficient ,DISTRONIC PLUS
warns you visually and audibly. There is arisk
of an accident.
In such cases, apply the brakes yourself and
try to take evasive action.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes
automatically in certain situations. To
prevent damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in
the following or other similar situations:
R when towing the vehicle
R in the car wash
If you fail to adapt your driving style,
DISTRONIC PLUS can neither reduce the risk
of accident nor override the laws of physics.
DISTRONIC PLUS cannot take into account
the road, traffic and weather conditions.
DISTRONIC PLUS is only an aid. You are
responsible for the distance to the vehicle in front,f
or vehicle speed, for braking in good
time and for staying in your lane.
Do not use DISTRONIC PLUS:
R in road and traffic conditions which do not
allow you to maintain aconstant speed e.g.
in heavy traffic or on winding roads
R on slippery road surfaces. Brakin gor
accelerating could cause the drive wheels
to lose traction and the vehicle could then
skid
R when there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow
vehicles driving in front,e .g. motorcycles, or
vehicles driving on adifferent line.
In particular, the detection of obstacles can
be impaired if:
R dirt on the sensors or anything else
coverin gthe sensors
R snow or heavy rain
R interference by other radar sources
R strongr adar reflections, for example, in
parking garages
If DISTRONIC PLUS no longer detect sa
vehicle in front,D ISTRONIC PLUS may
unexpectedly accelerate the vehicle to the
stored speed.
This speed may:
R be too high if you are driving in afilter lane
or an exit lane
R be so high in the right lane that you pass
vehicles driving on the left (left-han ddrive
countries)
R be so high in the left lane that you pass
vehicles driving on the right (right-hand
drive countries)
If there is achange of drivers, advise the new
driver of the speed stored.
General notes DISTRONIC PLUS regulates the speed and
automatically helps you maintain the
distance to the vehicle detected in front.
Vehicles are detected with the aid of the radar178
Driving systemsDriving and parking