2012 MERCEDES-BENZ GL SUV brake sensor

Night Vie
wAssist Plus ................... 371
Note s............................................. 366
Pa int. ............................................. 368
Pl ast ic trim .................................... 372
Revers ingc amera .......................... 370
Roo flining ...................................... 373
Seat bel t........................................ 373
Sea tcover ..................................... 372
Sensors ......................................... 370
Steering wh eel............................... 372
Tri mp ieces .................................... 372
Washing by hand ........................... 367
Wheels ........................................... 369
Windows ........................................ 369
Wi perb lades .................................. 369
Wooden trim .................................. 372
Car key
seeK ey
Car wash (care) ................................. 366
CD player /CDc hanger( on-board
computer) .......................................... 274
Central locking Automatic lockin g(on-board com-
puter) ............................................ .283
Locking/unlockin g(key ).................. 77
Centr econsole
Low er se ction .................................. 35
Uppe rsection .................................. 34
Changin gbulbs
Brake lamps ................................... 131
Dipped-bea mheadlamps ............... 129
Important safety notes ..................128
Ma in-beam headlamps ................... 130
Overview of bul btypes .................. 129
Parking lamps (front) .....................130
Removing/repl acing the cover
(fron twheel arch) .......................... 129
Standing lamps .............................. 130
Child-proof locks
Important safety notes ....................59
Rea rdoors ....................................... 60
Children
In the veh icle ................................... 50
Restraint sy stems ............................ 50
Child seat
Automatic recognitio n..................... 52
ISOFIX .............................................. 53
On the front-passenger se at............ 51Pro
blem (malfunction) ..................... 56
Rec ommend ations ........................... 58
Suit able positions ............................ 56
To pT ether ....................................... 55
Cigarette li ghter ................................ 349
Clean ing
Mirr ortur ns ignal ........................... 370
Traile rtow hitc h............................. 371
Climate control
Auxi liaryheating/ventilation ...... .... 148
Contro lling automatically ...............142
Convenience op ening/closing
(air-recirculatio nmode) ................. 147
Co oling with air dehumidificatio n..1 41
Demist ingt he windows ...... ............ 145
Demisting the windscreen .............145
Important safety notes ..................136
Indicator lamp ................................ 142
Informat ion onusing
THERMOTRONIC automatic cli-
mate control .................................. 141
Note sonu sing THERMATIC auto-
matic climate control .....................138
Overview of sy stems ...................... 136
Pro blem swithc ooling with air
dehumid ification ............................ 142
Pro blem with the rear window
heating .......................................... 146
Rea rcontrol panel ......................... 139
Rea rcontrol panel
(THERMOTRONIC with additional
rear-compartmen tclimate con-
trol) ................................................ 140
Setting the air distribution .............144
Setting the airflo w......................... 144
Setting the ai rvent s...................... 154
Setting the climate mod e(AIR
FLOW) ............................................ 143
Setting the temperature ................143
Switch inga ir-recirculation mode
on/off ............................................ 146
Switch ingo n/off ........................... 141
Switch ingr esidua lheat on/off ......147
Switch ingt he rea rwindo wheat-
ing on/of f...................................... 146
Switch ingt he ZON Efunction on/
off .................................................. 145 Index
7

On-ro
adprograms
AUTO program ............................... 248
Function/notes ............................. 248
Sno wprogram ............................... 249
SPORT program ............................. 249
Traile rprog ram .............................. 250
Ope ning and closing th eside trim
panels ................................................ .130
Operatin gsyst em
se eO n-board computer
Outside temperature display ...........268
Ov erhead control panel ......................37
Ov erride feature
Rea rside windows ........................... 60P
Pai nt code .......................................... 422
Pai ntwork (cleaning instructions) ...368
Pan orama sl iding sunroof
Important safety information ...........93
Opening/closing .............................. 95
Opening/closing the rol lers un-
blind ...... ........................................... 96
Problem (malfunction) .....................97
Rain closing feat ure. ........................ 95
Resetting ......................................... 96
Parking ............................................... 181
Important safety notes ..................181
Parking brake ................................ 182
Positio nofexterio rmirror, front-
passenger sid e............................... 114
Reversing camera ..........................223
se eP ARKTRONIC
Parking aid
Active Parking Assist .....................219
se eE xterior mirrors
see PARKTRONIC
Parking brake
Disp laym essage ............................ 294
Electric parking brake ....................182
Warn ingl am p................................. 332
Parkin glamps
Ch anging bulbs .............................. 130
Display message ............................ 302
Switch ingo n/off ........................... 121
Parking lamps (chang ingb ulbs) ......130 PARKTRONIC
Deactivating/activating .................218
Driving sy stem ............................... 216
Function/notes ............................. 216
Important safety notes ..................216
Pro blem (fault) ............................... 219
Sensor rang e................................. 216
Traile rtowing ................................. 218
Warn ingd ispla y............................. 217
PA SSENGER AIRBAG OF Fwarning
lamp ...................................................... 52
Pe trol .................................................. 424
Plastic trim (cleaning instructions) .372
Po we rclosin gfeature ......................... 84
Po we rw indows
see Side windows
PRE-SAFE ®
(preventive occupant
safety system) Display message ............................ 297
Operatio n......................................... 45
PRE-SAFE ®
Brake
Activating/deactivating .................278
Display message ............................ 298
Function/notes ................................ 68
Warn ingl am p................................. 335
Produc tinformation ............................ 23
Program se lector button .................. 170
Protectio nofthe en vironment
General notes .................................. 23
Pul ling away
Trailer ............................................ 162
Pul ling awa y(automatic transmis-
si on) .................................................... 161 Q
Qualifie dspecialis tworkshop ...........25 R
RACETIME R(on-boa rd computer) ....287
Radar se nsors
Overview ........................................ 433
Radar se nsor system
Activating/deactivating .................283
Display message ............................ 310
Radiato rcover ................................... 36216
Index

Seats
Adjusting (electrically) ...................102
Adjusting the he adrestraint ..........102
Clean ingt he cover ......................... 372
Correct driver's se at position........100
Entry positio n(3rd row of se ats)....106
Exit positio n(3rd row of se ats)...... 107
Fol ding down/up (3rd row of
seats) ............................................ .105
Fol ding the 2nd row of seats
forward electrically ........................107
Fol ding the 2nd row of seats
forward manually ........................... 106
Fol ding the rear bench sea tfor-
wards/bac k................................... 341
Important safety notes ..................101
Overview ........................................ 101
Sea theating problem ....................109
Sea tventil ation proble m................ 110
Storing settings (memory func-
tion) ............................................... 115
Switch ings eat heating on/off .......108
Switch ingt he seat ventilation on/
off .................................................. 109
Se lect or lever
Cleaning ......................................... 372
Sensors (cleaning instructions) .......370
Service seeA SSYST PLUS
Serv iceC ent re
see Qualified specialist workshop
Serv icem enu (on-board computer) .279
Service products
AdBl ue®
special additive s.............. 427
Brake fluid ..................................... 429
Co olan t(engine) ............................ 429
Engine oi l....................................... 428
Fue l................................................ 423
Important safety note s.................. 423
Washe rfluid .................................. .430
Settings
Factory (on-bo ardc omputer )......... 286
On-bo ardc omputer ....................... 279
Settin gthe air distribution ...............144
Settin gthe airfl ow............................ 144
SETUP (on-b oard computer) .............287Short journey
s(diesel particl efil-
ter) ...................................................... 184
Sidebag ................................................ 44
Side lamps Switch ingo n/off ........................... 120
Side marker lamp Display mes-
sage .................................................... 302
Side windo ws
Convenience closing ........................90
Convenience opening ......................90
Hinged si de window s....................... 90
Important safety notes ....................89
Opening/closing .............................. 89
Overview .......................................... 89
Pro blem (malfunction) ..................... 93
resetting .......................................... 91
Sl iding sunroof
Important safety information ...........93
Opening/closing .............................. 94
Pro blem (malfunction) ..................... 97
Rain closing feat ure. ........................ 94
Resetting ......................................... 94
se eP anorama sliding sunroof
Sno wchains
Information .................................... 399
Sno wdrive program ....................... 249
So cket
Centre console .............................. 350
Luggag ecompartmen t................... 351
Rea rcompartmen t......................... 350
So ckets
General notes ................................ 350
Spe cialist workshop ............................ 25
Spe ctacle scom partment ................. 340
Spe ed,cont rolling
see Cruise control
Spee dLimit Assist
Activating/deactivatin gthe warn-
ing function .................................... 277
Displayi ng...................................... 277
Display message ............................ 310
Display message in the multifunc-
tio nd ispla y.................................... 234
Function/notes ............................. 233
Important safety notes ..................233
Spe edometer
Digita l............................................ 272
In the Instrumen tcluster ......... 30, 267 18
Index

BAS (Brak
eAssis tSystem)
i Observet he "Imp ortant safety notes "sec-
tion (Y page 61). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased .There is arisk of accident.
In an emergenc ybraking situa tion, depress
the bra kepedal with full force. AB Sprevents
th ew heels fr om locking.
BAS operate sinemergency brakin gsitua-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the brakin gforce,
thus shortening the stoppin gdistance.
The brakes will func tion as usual onc eyou
release the brake pedal. BA Sisd eactivated. BAS PLUS (Brake Assist Syste
mPlus)
i Observe the "Importan tsafety notes" sec-
tion (Y page 61).
BAS PLUS is only available on vehicles with
DISTRONIC PLUS.
BAS PLUS provides braking assistance in haz-
ardous situations at speeds greater than
7k m/h and uses rad ar sensortechnology to
assess the traffic situation.
With the help of the rada rsensor system ,BAS
PLU Scan detect obstacles 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 det ects tationar yobstacles,
for example, stopped or parked vehicles.
To prevent afront-en dcollision, BA SPLUS
calculate sthe brake force necessary if:
R you approach an obstacle, and
R BA SP LUS ha sdetected arisk of collision
If you ar edriving at aspeed over
30 km/h:ify ou depress the brake sharply,
BA SP LUS automatically raise sthe brake
pressur etoavalue adapted to the traffic sit-
uation. If you are driving at
aspeed under
30 km/h:ify ou depress the brake, BA SPLUS
is activated. Braking will be carried ou tatthe
last possible moment.
If BA SPLUS demand sparticularly high brak-
ing force, preventative passenger protection
measures (PRE-SAFE ®
)a re activate dsimul-
taneously.
X Keep the brake pedal depressed until the
emergenc ybraking situatio niso ver.
ABS prevents th ewheels from locking.
BA SP LUS is deactivate dand the brakes func-
tion as usual ,if:
R you release th ebrake pedal.
R there is no longe rany danger of arear-end
collision.
R no obstacl eisdetected in front of your
vehicle.
If you have activated DSR (Y page 251), BAS
PLU Sisa lso deactivated.
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 senso rsystem must be switched off
using the on-board computer in the vicinit yof
radio telescop efacilities 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
senso rsystem using the on-board computer,
see (Y page 283). 62
Driving safety systemsSafety

For BAS PLUS to assis
tyou whe ndriving, the
rad ar se nsorsystem must:
R be switched on (Y page 283)
R be operational (Y page 298)
If the radar sensor syste mism alfunctioning,
BA SP LUS wi llnot be available. The brake
system is stil lavailable wit hcomplete brake
boostin geffect and BAS. G
WARNING
BAS PLUS canno talways clearly identify
objects and complex traffic situations. BAS
PLU Scannot 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 partic ular,the detection of obstacles can
be im paired if there is:
R dirt on the sensors or anything else cov er-
ing the sensors
R snow or heavy rain
R interference by othe rradar sources
R the possibility of stron gradar reflections,
for example, in multi-storey car parks
R an arrow vehicle travellin ginfront,e.g. a
motorcycle
R av ehicle travel lingin fron tonad ifferent
line G
WARNING
BA SP LUSd oes no treact:
R to peopl eoranimals
R to oncomin gvehicles
R to crossin gtraffic
R when corneri ng
As aresult, BAS PLU Smay not intervene in all
critical situations. There is arisk of an acci-
dent.
Always pay careful attention to the traf fics it-
uation and be ready to brake.
Following damage to the fron tend of the vehi-
cle ,havet he configuration and operation of
the radar sensors checked at aqualified spe- cialist workshop. This also applie
stoc olli-
sions at slow speeds where ther eisnovisible
damage to the fron tofthe vehicle. COLLISION PREVENTION ASSIST
Genera lnotes COLLISION PREVENTION ASSIST consist
sof
Adaptive Brake Assist and the distance warn-
ing function, which are described in the fol-
lowing.
Distance warnin gfunction Important safety notes
i
Observe th e"Importan tsafety notes" sec-
tion (Y page 61). G
WARNING
The distance warning function does not react:
R to people or animals
R to oncomin gvehicles
R to crossing traffic
R when cornering
Thus, the distanc ewarning function cannot
provide awarning in all critical situations.
There is arisk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
The distance warnin gfunction cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning signal
may:
R give an unnecessary warning
R not give awarning
Always pay careful attention to the traffic sit-
uation, do not rely on the distance warning
function alone.
Function
X To activate/deactivate: activate or deac-
tivate the distance warning function in the
on-board computer (Y page 278). Driving safety systems
63Safety Z

When the distan
cewarning function is acti-
vated, the multifunction display shows the
Ä symbol as long as the HOLD function is
not activated (Y page 211). On vehicles with
Active Parking Assist, the Äsymbol is dis-
played when position Pis engaged or you are
driving faster than 35 km/h.
The distanc ewarning function can help you
to minimise the risk of acollision with the
vehicle in fron torreduce the effects of such
ac ollision .Ifthe distanc ewarning function
detect sthat ther eisar isk of acollision ,you
will be warned visually and acoustically .The
distanc ewarning function cannot preven ta
collision without your inte rvention.
The distan cewarning function will issue a
warning at speed sofaround 30 km/h or
more if:
R thed istanc etothe vehicle in fron tist oo
short for the speed you ar edriving at for
severa lseconds. The ·distan cewarn-
ing lamp then lights up in the instrument
cluster.
R you are rapidly approaching the vehicle in
front. An intermittent warning ton ewill
then sound and the ·distanc ewarning
lamp will light up in the instrument cluster.
X Brak eimmediatel yinordertoi ncreas ethe
distanc efrom th evehicle in front.
or
X Take evasiv eactio nprovide ditiss afe to do
so.
For the distanc ewarning function to assist
you when driving, the function must be acti-
vated in the on-board computer and be opera-
tional (Y page 278).
Due to the nature of the system, particularly
complicated driving conditions may cause the
system to display an unnecessary warning.
With the help of the radar senso rsystem, the
distanc ewarning function can detect obsta-
cles that are in the path of your vehicle for an
extended period of time.
At speeds up to approximately 70 km/h, the
distance warning fun ction may also detect stationary obstacles, for example, stopped or
parked vehicles.
If you approach an obstacle and the distance
warnin gfunction detects arisk of acollision,
the system will initially aler tyou both visually
and acoustically.
In particular ,the detection of obstacles can
be impaired if ther eis:
R dir tont he sensors or anythin gelse cover-
ing the sensors
R snow or heavy rain
R interferenc ebyother radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
R an arro wvehicle travelling in front, e.g. a
motorcycle
R av ehicle travelling in fron tonadifferent
line
Following damage to the fron tend of the vehi-
cle ,havet he configuration and operation of
the radar sensor checked at aqualified spe-
cialist workshop. This also applie stoc olli-
sions at slow speeds where ther eisnovisible
damage to the fron tofthe vehicle.
Adaptive Brake Assist i
Observ ethe "Importan tsafety notes" sec-
tion (Y page 61). G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions. In these cases, Adaptive Brake Assist
may not intervene. There is arisk of an acci-
dent.
Always pay careful attention to the traffic sit-
uation and be ready to brake. G
WARNING
Adaptive Brak eAssist does not react:
R to people or animals
R to oncomi ng vehicles
R to crossing traffic 64
Driving safety systemsSafety

R
to stationary obstacles
R when cornering
As aresult, Adaptive Br akeA ssist may not
int ervene in al lcritica lconditions .There is a
risk of an accident.
Always pay carefu lattention to the traffic sit-
uation and be ready to brake.
Adaptive Brake Assist aids you in braking dur-
ing hazardous situations at speeds above
30 km/h and uses the radar sensor system
to evaluate the traffic situation.
With the hel pofthe adaptive Brake Assist ,the
distanc ewarning signal can detect obstacles
that are in the path of your vehicle for an
extended period of time.
Should you approach an obstacle and the
adaptive Brake Assis thas detected arisk of
collision, the adaptive Brake Assist calculates
the brakin gforc enecessar ytoavoidac olli-
sion with the vehicle in front .Should you
apply the brakes forcefully ,the adaptive
Brake Assist will automatically increase the
brakin gforc etoal evel suitable for the traffic
conditions.
X Keep the brak epedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if:
R you release the brak epedal.
R there is no longer any danger of arear-end
collision.
R no obstacl eisdetected in front of your
vehicle.
Adaptive Brake Assist is then deactivated.
If adaptive Brake Assist demands particularly
high braking force, preventative passenger
protec tion measure s(PRE-SAFE ®
)a re activa-
ted simultaneousl y.
Up to vehicl espeeds of around 25 0km/h,
th ea daptiv eBrake Assist is capable of react-
ing to moving objects that have alread ybeen
recognised as such at least once over the
period of observation .Adaptiv eBrake Assist
does not react to stationary obstacles. If th
eadaptiv eBrake Assist is not available
du et oam alfunction in the radar senso rsys-
tem, the brake syste mremains available with
ful lbrake boostin geffect and BAS.
In particular, th edetection 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 rada rsources
R the possibility of stron gradar 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
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor 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. Adaptive brake lamps
If you brake sharply from aspeed of more
than 50 km/ horifbraking is assisted by BAS
or BAS PLUS, th ebrake lamp sflash rapidly.
In this way, traffic travelling behind you is
warned in an even more noticeable manner.
If you brake sharply from aspeed of more
than 70 km/ htoastandstill, the hazard warn-
ing lamps are activated automatically .Ifthe
brakes ar eapplied again, the brak elamps
light up continuously .The hazard warning
lamps switc hoff automatically if you travel
faster than 10 km/h .You can also switc hoff
th eh azard warning lamps using the hazard
warning button (Y page 122). Driving safety systems
65Safety Z

X
Brake immediatel yinorder to increas ethe
distanc efrom th evehicle in front.
or
X Take evasive actio nprovided it is safe to do
so.
From aspeed of approxim ately 7km/h ,ifthe
driver and passengers hav efastened their
seat belts, PRE-SAFE ®
Brake can brake the
vehicl eautom atically at speeds up to approx-
imatel y200 km/h.
Due to the nature of the sy stem, particu larly
comp licate ddriving conditions may cause
unneces sary warnings or th eunneces sary
interventi onof PRE-SAFE ®
Brake.
You can stop PRE-SAFE ®
Brake interventi on
at any time by:
R depressing the accelerato rpedal further
R activa ting kickdown
R releasing the brake pedal.
The braking action of PRE-SAFE ®
Brak eis
ended automatically if:
R you manoeuvr etoavoidthe 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 have activa tedD SR (Y page 25 1)PRE-
SAFE ®
Brak eisa lso deactiva ted.
With the help of the rada rsensor system,
PRE- SAFE ®
Brake can detect obstacles that
are in front of your vehicle for an extended
period of time.
At speed suptoapproximately 70 km/h, PRE-
SAFE ®
Brak ecan also detect stationary
obstacles such as stopped or parked vehi-
cles.
If you approach an obstacle and PRE-SAFE ®
Brak edetects arisk of acollision ,the system
will aler tyou both visually and acoustically .If
you do not brake or take evasive action, the
syste mwill 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 45). If, at speeds ove r30km/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®
Brake wil linitiall ybrake your vehi-
cle by apartial application of the brakes if a
danger of collisio nisd etected. There may be
ac ollision unless you also brake. Automatic
emergency brakin gcannot 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 traf ficc onditions.
In these cases, PRE- SAFE®
Brake may:
R give an unnecessary warning and then
brake the vehicle
R neithe rgive awarning nor intervene
There is arisk of an accident.
Always pay particular attention to the traf fic
situation and be ready to brake, especiall yif
PRE- SAFE®
Brake warns you. Terminate the
intervention in anon-critical driving situation.
In particular, the detection of obstacles can
be impaired if ther eis:
R dir tont he sensor soranything els ecover-
ing the sensors
R snow or heav yrain
R interference by other radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
R an arrow vehicle travellin ginfront, e.g .a
motorcycle
R av ehicle travellin ginfront on adifferent
line Drivin
gsafety systems
69Safety Z