2012 MERCEDES-BENZ CLS COUPE sensor

PRE-SAFE
®
(preventative occupant
protection) G
WARNING
When adjusting the seat, make sure that
nobody can become trapped.
! Make sure that there are no objectsint he
footwell or behind the seats when moving
the seat back. There is arisk that the seats
and/or the objectsc ould be damaged.
PRE-SAFE ®
takes pre-emptive measures to
protect occupants in certain hazardous sit-
uations.
PRE-SAFE ®
intervenes:
R when BAS activates, e.g. in emergency
braking situations
R when BAS PLUS intervenes powerfully on
vehicles with DISTRONIC PLUS
R if, on vehicles with DISTRONIC PLUS, the
radar sensor system detectsani mminent
dange rofcollision in certain situations
R in critical driving situations, e.g. when phys-
ical limits are exceeded and the vehicle
understeers or oversteers severely
PRE-SAFE ®
takes the following measures
depending on the hazardous situation detec-
ted:
R the front seat belts are pre-tensioned.
R vehicles with the memory function: the
front-passenger seat is adjusted if it is in an
unfavourable position.
R vehicles with amulticontour seat or active
multicontour seat: the air pressure in the
side bolsters of the seat cushion and back-
rest is increased.
R if the vehicle skids, the sliding sunroof/
panorama sliding sunroof and the side win-
dows are closed so that only asmall gap
remains.
If the hazardous situation passes without
resulting in an accident ,PRE-SAFE ®
slackens
the belt pretensioning. The air pressure in the
side bolsters on the multicontour seat/active
multicontour seat is reduced again. All set- tings made by PRE-SAFE
®
can then be
reversed.
If the seat belts are not released:
X Move the backrest or seat back slightly, but
only when the vehicle is stationary.
The belt pretensioning is reduced and the
lockin gmechanism is released.
More information about seat belt adjustment,
ac onvenienc efunction integrated into PRE-
SAFE ®
,c an be found under "Seat belt adjust-
ment"( Ypage 50). Seat belts
Important safety notes G
WARNING
As eat belt which is not worn correctly, or
which has not been engaged in the seat belt
buckle correctly, cannot provide the intended
level of protection. Under certain circumstan-
ces, this could cause severe or even fatal inju-
ries in the event of an accident.
Therefore, make sure that all occupant s—in
particular, pregnan twomen —wear their seat
belts correctly at all times.
R The seat belt must fit snugly on your body
and must not be twisted.Therefore, avoid
wearing bulky clothing, e.g. awinter coat.
The shoulder section of the belt must be
routed across the centre of your shoulder
—onnoa ccount across your neck or under
your arm —and pulled tight against your
uppe rbody. The lap belt must alwaysp ass
across your lap as low down as possible, i.e.
over your hip joints—n ot across your abdo-
men. If necessary, push the seat belt
slightly downwards and adjust it by pulling
it in the direction the seat belt retracts.
R Do not route the seat belt strap over sharp
or fragile objects. Please make sure that
such object sare not on or in your clothing,
e.g. spectacles, pens or keys etc. The seat
belt strap could become damaged and tear 48
Occupant safetySafety

R
only use aforward-facin gchild restraint
system on the front-passenger seat and
move the front-passenger seat to the rear-
most position.
R have the automatic child seat recognition
checked at aqualified specialist workshop.
To ensure that the automatic child seat rec-
ognition on the front-passenger seat func-
tions/communicates correctly, never place
objects, e.g. acushion, under the child
restraint system. The entire base of the child
restraint system must always rest on the seat
cushion. An incorrectly fitted child restraint
system cannot perform its intended protec-
tive function in the event of an accident, and
could lead to injuries. G
WARNING
Do not place electronic devices on the front-
passenger seat, e.g.:
R laptops, when switched on
R mobile phones
R cards with transponders, e.g. ski passes or
access cards
Signals from electronic equipment can cause
interference in the automatic child seat rec-
ognition sensor system. This can lead to a
system malfunction. This may cause the
4 PASSENGER AIRBAG OFF indicator
lamp to light up without there being achild
seat with transponders for automatic child
seat recognition fitted. The front-passenger
airbag will not then deploy during an accident.
It is also possible that the 6SRS warning
lamp lights up and/or the 4PASSENGER
AIRBAG OFF indicator lamp does not light up
briefly when you turn the key in the ignition
lock to position 2. If your vehicle does not have automatic child
seat recognition on the front-passenger seat,
this is indicated by
aspecial sticker. The
sticker is affixed to the side of the dashboard
on the front-passenger side. The sticker is
visible when you open the front-passenger
door.
Vehicles without automatic child seat recog-
nition on the front-passenger seat: when you
turn the key to position 2inthe ignition lock,
the 4 PASSENGER AIRBAG OFF indicator
lamp lights up briefly, but does not have any
function. It does not indicate that there is
automatic child seat recognition on the front-
passenger seat. The front-passenger seat sensor system for
child restraint systems detectsw
hether a
special Mercedes-Ben zchild seat with a
transponder for automatic child seat recog-
nition has been fitted. In this case, 4
PASSENGER AIRBAG OFF indicator lamp :
lights up. The front-passenger front airbag is
disabled. Children in the vehicle
55Safety Z

BAS PLUS (Brak
eAssis tSystem Plus)
i Observ ethe "Important safety notes "sec-
tio n(Ypage 62).
BAS PLU Sisonly available on vehicles with
DISTRONIC PLUS.
BAS PLUS provides braking assistance in haz-
ardous situations at speeds greater than
7k m/h and uses rada rsensor technology to
assess the traffic situation.
With the help of the radar sensor system, BAS
PLUS can detec tobstacles that are in the
path of your vehicle for an extended period of
time.
At speeds up to approximately 70 km/h, BAS
PLUS may also detect stationar yobstacles,
for example, stopped or parked vehicles.
To prevent afront-end collision, BAS PLUS
calculates the brake force necessary if:
R yo ua pproach an obstacle, and
R BAS PLUS ha sdetected arisk of collision
If you ar edriving at aspeed over
30 km/h:ify ou depress the brake sharply,
BAS PLUS automatically raises the brake
pressure to avalue adapted to the traffic sit-
uation.
If you are driving at aspeed under
30 km/h:ify ou depress the brake, BAS PLUS
is activated. Brakin gwill be carried out at the
last possible moment.
If BAS PLUS demands particularly high brak-
ing force, preventative passenger protection
measures (PRE-SAFE ®
)a re activated simul-
taneously.
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 func-
tion as usual,i f:
R you release the brake pedal.
R there is no longer any danger of arear-end
collision.
R no obstacle is detected in front of your
vehicle. The radar sensor system is switched off auto-
matically in the vicinit
yofradio telescope
facilities in the following vehicles:
R vehicles with COMAND Online and naviga-
tion
R vehicles with Audio 20 and Becker ®
MAP
PILOT
Becker ®
MAP PILOT must be connected;
see the separate operating instructions.
The radar sensor system must be switched off
using the on-board computer in the vicinit yof
radio telescope facilities in the following vehi-
cles:
R vehicles without COMAND Online and nav-
igation
R vehicles without Audio 20 and Becker ®
MAP PILOT
R vehicles for Australia
For information on switching off the radar
sensor system using the on-board computer,
see (Y page 225).
For BAS PLUS to assist you when driving, the
radar sensor system must:
R be switched on (Y page 225)
R be operational (Y page 245)
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. 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 sit-
uation and be ready to brake.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R snow or heavy rain
R interference by other radar sources 64
Driving safety systemsSafety

R
the possibility of strong rada rreflections,
for example, in multi-storey car parks
R an arrow vehicle travellin ginfront, e.g. a
motorcycle
R av ehicle travellin ginfrontonad ifferent
line G
WARNING
BAS PLUS does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As aresult, BAS PLUS may not intervene in all
critical situations. There is arisk of an acci-
dent.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
Following damage to the fron tend of the vehi-
cle ,havet he configuratio nand operatio nof
the rada rsensor schecked at aqualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where ther eisnovisible
damage to the fron tofthe vehicle. Adaptive brake lamps
If you brake sharply from aspeed of more
than 50 km/h or if braking is assisted by BAS
or BAS PLUS, the brake lamps flash rapidly.
In this way,t raffic travelling behind you is
warned in an even more noticeable manner.
If you brake sharply from aspeed of more
than 70 km/h to astandstill, the hazard warn-
ing lamps are activated automatically .Ifthe
brakes are applied again, the brake lamps
light up continuously.T he hazard warning
lamps switch off automatically if you travel
faster than 10 km/h .You can also switch off
the hazard warning lamps using the hazard
warning button (Y page 114). ESP
®
(Electronic Stability Program)
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 62). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilise the vehicle. In addition, other driving
safety systems are switched off. This increa-
ses the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
! Vehicles with 4MATIC: switch off the igni-
tion when the parking brake is being tested
using adynamometer.
Application of the brakes by ESP ®
may oth-
erwise destroy the brake system.
Vehicles without 4MATIC: observe the notes
on ESP ®
if the vehicle is being towed with the
rear axle raised (Y page 322).
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up continu-
ously when the engine is running.
If the ÷ warning lamp and the åwarn-
ing lamp are lit continuously, ESP ®
is not
available due to amalfunction.
Observe the information on warning lamps
(Y page 263) and display messages which
may be shown in the instrument cluster
(Y page 232).
If ESP ®
detect sthat the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilise the
vehicle. The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilise the vehicle during braking.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster. Driving safety systems
65Safety Z

This function will issue
awarning if:
R at speeds of around 30 km/ho rmore, over
several seconds, the distance maintained
to the vehicle travelling in front is insuffi-
cient.
The · distance warning lamp then lights
up in the instrument cluster.
R at as peed of approximately 7km/h or
higher, you very quickly approach avehicle
in front.
An intermittent warning tone willt hen
sound and the ·distance warning lamp
willl ight up in the instrument cluster.
X Brake immediately in order to increase the
distance from the vehicl einfront.
or
X Take evasive action provided it is safe to do
so.
From aspee dofa pproximatel y7km/h,ifthe
driver and passengers have fastened their
seat belts, PRE-SAFE ®
Brake can brake the
vehicl eautomatically at speeds up to approx-
imatel y200 km/h.
Due to the nature of the system, particularly
complicate ddriving conditions may cause
unnecessary warnings or the unnecessary
interventio nofPRE-SAFE ®
Brake.
You can prevent the interventio nofthe PRE-
SAFE ®
Brake at any time by:
R depressing the accelerato rpedal further
R activating kickdown
R releasing the brake pedal.
The brakin gaction of PRE-SAFE ®
Brak eis
ended automatically if:
R you manoeuvre 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.
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. At speeds up to approximately 70 km/h, PRE-
SAFE
®
Brak ecan also detec tstationary
obstacles such as stopped or parked vehi-
cles.
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 take evasive action ,the
system will warn you by automatically braking
the vehicle gently. If ther eisanincreased risk
of collision, preventativ epassenger protec-
tion measures (PRE-SAFE ®
)a re activated
(Y page 48). If, at speeds over 30 km/h, arisk
of collision remains and you do not brake,
take evasive action or significantly acceler-
ate, automatic brakin gmay be performed up
to alevel of automatic emergency braking.
Automatic emergency brakin gisnot per-
formed until immediately prior to an accident
that can no longer be avoided. G
WARNING
PRE-SAFE ®
Brak ewill initially brake your vehi-
cle by apartial application of the brakes if a
danger of collision is detected. There may be
ac ollision unless you also brake. Automatic
emergency braking cannot preven tacolli-
sion. There is arisk of an accident.
Always apply the brakes yourself and try to
take evasive action. G
WARNING
PRE-SAFE ®
Brak ecannot alway sclearly iden-
tify objects and complex traffic conditions.
In these cases, PRE-SAFE ®
Brak emay:
R give an unnecessary warning and then
brake the vehicle
R neither give awarning nor intervene
There is arisk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
PRE-SAFE ®
Brak ewarns you. Terminate the
intervention in anon-critical driving situation. Driving safet
ysystems
69Safety Z

In particular, the detection of obstacle
scan
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R snow or heavy rain
R interference by other radars ources
R the possibility of strongr adar reflections,
for example, in multi-storey car parks
R an arrow vehicle travelling in front,e .g. a
motorcycle
R av ehicle travelling in front on adifferent
line 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 sit-
uations. There is arisk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent acol-
lision, you must apply the brakes yourself.
X To activate/deactivate: activate or deac-
tivate PRE-SAFE ®
Brake in the on-board
computer (Y page 219).
When PRE-SAFE ®
Brake is activated, the
Ä symbol appears in multifunction dis-
play, as long as the HOLD function is deac-
tivated (Y page 179). On vehicles with the
Active Parking Assist driving system, the
Ä symbol is displayed when position P
is engaged or you are driving faster than
35 km/h.
For PRE-SAFE ®
Brake to assist you when driv-
ing, the radar sensor system must be
switched on (Y page 225) and be opera-
tional. The radar sensor system is switched off auto-
matically in the vicinit
yofradio telescope
facilities in the following vehicles:
R vehicles with COMAND Online and naviga-
tion
R vehicles with Audio 20 and Becker ®
MAP
PILOT
Becker ®
MAP PILOT must be connected;
see the separate operating instructions.
The radar sensor system must be switched off
using the on-board computer in the vicinit yof
radio telescope facilities in the following vehi-
cles:
R vehicles without COMAND Online and nav-
igation
R vehicles without Audio 20 and Becker ®
MAP PILOT
R vehicles for Australia
For information on switching off the radar
sensor system using the on-board computer,
see (Y page 225).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors checked at aqualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. Anti-theft systems
Immobiliser
X To activat ewith th ekey: remove th ekey
fro mt heignitio nlock.
X To activat ewith KEYLESS-GO: switch the
ignitio noff and open the driver's door.
X To deactivate: switch on the ignition.
The immobiliser prevents you rvehicle from
being started without the correct key.
When leaving the vehicle, alway stake the key
with you and lock the vehicle. Anyone can
start the engin eifavalid key has been left
inside the vehicle. 70
Anti-theft systemsSafety

X
Remove th ekeyfrom th eignition lock.
X Press button :.
Indicato rlamp ;light supb riefly.
X Loc kthe vehicle wit hthe keyorK EYLESS-
GO.
Tow-away protection is deactivated.
Tow-away protection remains deactivated
until:
R thev ehicle is unlocked again and
R ad oor is opened and closed again and
R thev ehicle is locke dagain
To preven tafalse alarm, deactivate the tow-
away protection if you lock you rvehicle and
it:
R is being transported
R is being loaded ontoaf erry or car trans-
porter ,for example
R is parked on amovable surface, e.g. in a
split-level garage Interior motion sensor
Function When the interior motion sensor is primed, a
visual and audible alarm is triggered if move-
ment is detected in the vehicle interior. This
can occur if someon ereaches intot he vehicle
interior, for example.
Activating X
Make sure that:
R
the side windows are closed.
R the sliding sunroof is closed.
R ther eare no objects, e.g. mascots, hang-
ing on the rear-view mirror or on the grab
handles on the roof trim.
This will preven tfalse alarms.
X Mak esure that: R
thed oor sare closed.
R thes lidin gsunroo fisclosed.
R the boot lid is closed.
Only then is the interior motion sensor
primed.
X Lock the vehicle with the key or KEYLESS-
GO.
The interior motion sensor is primed after
approximately 30 seconds.
To deactivate X
Unlock the vehicle with the key or KEY-
LESS-GO.
The interior motion sensor is switched off
automatically.
Deactivating X
Remove the key from the ignition lock.
X Press button :.
Indicator lamp ;flashes briefly.
X Lock the vehicle with the key or KEYLESS-
GO.
The interior motion sensor is deactivated.
The interior motion sensor remains deactiva-
ted until:
R the vehicle is unlocked againa nd
R ad ooriso peneda nd closed agai nand
R the vehicl eislocked again 72
Anti-theft systemsSafety

To prevent
afalse alarm, deactivate the inte-
rior motion sensor if you lock your vehicle
and:
R people or animals remain in the vehicle.
R the side windows remain open.
R the sliding sunroof remains open.
i UK only: your vehicle is equipped with a
double lock function. The doors cannot be
opened from the inside if the vehicle was
locked with the key or with KEYLESS-GO
(Y page 82). Deactivate the interior
motion sensor before you lock the vehicle.
The doors can then be opened from the
inside after the vehicle has been locked
from the outside. Observe the "Important
safety notes" (Y page 82). Anti-theft systems
73Safety Z