2020 MERCEDES-BENZ GLA SUV brake sensor

Cross
Tra1c Ale rtcan warndrivers of any cross-
ing tra1c when reve rsing and manoeuvring out of
a parking space. The radar sensors in the bumper
also monitor the area adjacent totheve hicle. If a
critical situation is de tected, theL symbol
appears in the media display and theve hicle can
be braked automaticall y.
If th era dar sensors are obstructed byvehicles or
ot her objects, de tection is not possible.
Cross Tra1c Ale rtis active under thefo llowing
conditions:
R ifth eve hicle is reve rsing at a walking pace.
R manoeuvring assistance is activated
(/ page 278).
% Also obser vethe inst ructions on Blind Spot
Assist and Active Blind Spot Assist
(/ page 256).
Syst
Syst em limits
em limits
Cross Tra1c Ale rtis not available on inclines.
Cross Tra1c Ale rtis not available when driving
with a trailer. A
A ctiv
ctiv ating/deactiv
ating/deactiv ating manoeuvr
ating manoeuvr ing assist
ing assistant
ant
Multimedia system:
4 © 5
Settings 5
Assistance
5 Camera & parking #
Activate/deactivate Manoeuvring assistance.
% Manoeuvring assistant must be acti veforthe
function of Drive AwayAssist (/ page 277)
and Cross Tra1c Ale rt (/ page 277). T
T
r
railer hitch
ailer hitch N
No
ot
tes on tr
es on tr ailer oper
ailer oper ation
ation *
N
NOOTE
TE Mercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. Obser
vethefo llowing no tes on theto ngue weight:
R Do not use a tongue weight that exceeds or
fa lls below the permissible tongue weight
R Use a tongue weight as close as possible to
th e maximum tongue weight Do not
exceed thefo llowing values:
R Perm issible towing capacity
R Perm issible rear axle load of theto wing vehi-
cle
R Perm issible gross weight of theto wing vehicle
R Perm issible gross weight of the trailer
R Maximum permissible speed of the trailer
Ensure thefo llowing before starting a journe y:
R The tyre pressure on there ar axle of theto w-
ing vehicle is set for a maximum load
R The lighting of the connected trailer is opera-
tional
R V
Vehicles wit
ehicles wit hout LED headlam
hout LED headlam ps or MUL
ps or MULTI-
TI-
BEAM LED headlam
BEAM LED headlam ps:
ps:the headlamps ha ve
been set cor rectly
In theev ent of increased rear axle load, the car/
trailer combination must not exceed a maximum
speed of 100 km/h forre asons conce rning the
operating permit. This also applies in countries in
which the permissible maximum speed for car/
trailer combinations is abo ve100 km/h. 278 278
Driving and parking

*
N
N O
OTE
TE Damage from automatic braking If one of
thefo llowing functions is switched
on, theve hicle brakes automatically in cer tain
situations:
R Active Brake Assist
R Active Distance Assist DISTRONIC
R HOLD function
R Active Parking Assist
To avoid damage totheve hicle, deactivate
th ese systems in thefo llowing or similar situa-
tions: #
during towing #
in a car wash *
N
NO OTE
TE Damage due tounsuitable car wash #
Before driving into a car wash make sure
th at the car wash is suitable forth eve hi-
cle dimensions. #
Ensu rethere is su1cient ground clear-
ance between the underbody and the
guide rails of the car wash. #
Ensure that the clearance width of the
car wash, in particular the width of the
guide rails, is su1cient. To
avo id damage toyour vehicle when using a car
wa sh, ensu rethefo llowing beforehand:
R Active Distance Assist DISTRONIC is deactiva-
te d.
R The HOLD function is switched o..
R The side windo wsand sliding sunroof are com-
ple tely closed.
R The blo werfo rth eve ntilation/heating is
switched o..
R The windsc reen wiper switch is in position g.
R The key is at a minimum dis tance of 3 m away
from theve hicle. Otherwise theta ilgate could
open unintentionall y.
R In automatic car washes with con veyo r sys-
te ms:
- Neutral iis engaged. -
V Vehicles wit ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: If
yo uwo uld like tolea vetheve hicle while it
is being washed, make sure theke y is
located in theve hicle. The park position
j isotherwise automatically engaged.
% If, aTer the car wash, youre mo vethewax
from the windscreen and wiper rubbers, this
will pr event smearing and reduce wiper noise.
A
A ut
ut omatic car w
omatic car w ash mode
ash mode
In car wash mode, theve hicle is prepared for driv-
ing into the automatic car wash. Car wash mode
can be activated at a speed of up to20 km/h
Ac tivate (/ page 350).
The following settings are made when car wash
mode is activated:
R The outside mir rors are folded in.
R Topreve ntthe windscreen washer system
from starting up automaticall y,thera in sensor
is deactivated.
R The rear wind owwiper is deacti vated.
R The windo wsand the sliding sunroof are
closed. Maintenance and care
349
349

R
Furthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can be
high lybene/cial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOExtended
tyres) and the same make.
R Only /t wheels of the same size on one axle
(leT and right).
It is only permissible to/t a di.e rent wheel
size in theev ent of a 0at tyre in order todrive
to the specialist workshop.
R Do not make any modi/cations tothe brake
system, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral ope rating permit.
R V
V ehicles wit ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: all /t tedwheels must be equipped with
functioning sensors forth e tyre pressure mon-
itoring system.
R Attemp eratures below 7 °C use winter tyres
or all-season tyres mar kedi M+Sfor all
wheels. Wi
nter tyres pr ovide the best possible grip in
wintry road conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres /t ted.
If th e tyre's maximum speed is below that of
th eve hicle, this must be indicated byan
appropriate label in the driver's /eld of vision.
R Run in new tyres at moderate speeds forthe
/r st 100 km.
R Replace the tyres aTer six years at the latest,
re ga rdless of wear.
R When r
When r eplacing wit
eplacing wit h tyr
h tyres t
es that do no
hat do no t f
t featur
eatur e
e
r
r un-0at
un-0at c
char
har act
acter
eris
istics:
tics: vehicles with
MOExtended tyres are not equipped with a
TIREFIT kit at thefa ctor y.Equip theve hicle
with a TIREFIT kit aTer replacing with tyres
th at do not feature run-0at characteristics,
e.g. winter tyres.
% You can permanently limit the maximum
speed for driving with winter tyres
(/ page 238). Fo
r more information on wheels and tyres, con-
ta ct a quali/ed specialist workshop.
Be sure toalso obser vethefo llowing fur ther rela-
te d subjects:
R Notes on tyre pressure (/ page 380)
R Tyre pressure table (/ page 381)
R Notes on the emer gency spa rewheel
(/ page 394) N No
ot
tes on int
es on int erc
erchanging wheels
hanging wheels &
W
WARNING
ARNING Risk of injury thro ugh di.erent
wheel sizes
Inter changing the front and rear wheels can
se verely impair the driving characteristics.
The disk brakes or wheel suspension compo-
nents may also be damaged. #
Only inter change the front and rear
wheels if the wheels and tyres ha vethe
same dimensions. Wheels and tyres
387
387

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Drive on
or #
Stop theve hicle in accordance with the tra1c conditions and restart theve hicle. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop.
¸
Ã
ç
Ä temporarily unavailable
Sensors dirty *F
ront and corner radar sensors (hereaTer "sensors") are malfunctioning. Possible causes:
R The senso rsare dirty
R Heavy rain or snow
R Extended country driving without other tra1c, e.g. in the desert
Driving systems and driving saf ety sy stems ma y be malfunctioning or temp orarily una vailable. The brake system, steer-
ing and drive system will continue tofunction normall y. #
Drive on
Once the causes of the problem are no longer present, the driving systems and driving saf ety sy stems will be available
again and the cor responding symbols will be switched o..
If th e display message does not disappear: #
Stop theve hicle in accordance with the tra1c conditions. #
Clean all sensor co vers from outside (/ page 226). #
Restart theve hicle. Displ
aymessages and warning/indicator lamps
465 465

Dr
Dr
iving syst
iving syst ems
ems W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
L
Wa rning lamp for distance
wa rning function *T
he red distance warning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obstacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the distance.
Fu nction of Active Brake Assist (/ page 248).
Ó Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
Due todirty sensors or a malfunction, the system is not available or thera nge of functions is restric ted. #
Notethe messages on the instrument displa y.
ê
Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
The system is switched o. or thera nge of functions has been automatically restric ted.
This may be the case if the driver is not wearing a seat belt or ano ther driving system has been activated. #
Obser vethe no tes on Active Brake Assist (/ page 248).496
496
Display messages and
warning/indicator lamps

EBD (Electronic Brake
forc e Distribu-
tion).......................................................2 30
HOLD function....................................... 231
Limited braking e.ect (salt-treated
ro ads)................................................... .174
Ne w/replaced brake linings/brake
discs...................................................... 173
Po st-collision brak e.................................. 60
Ru nning-in no tes.................................... 173
Br
Br ak ak es
es
see Recuperation
Br
Br aking assist
aking assist ance
ance
see BAS (Brake Assist System)
Br
Br eakdo
eakdo wn
wn
Assistance overview. ................................ 20
To w- starting........................................... 375
To wing away.......................................... 372
Tr anspo rting theve hicle........................ .373
Wheel chang e........................................ 389
Br
Br ea kdo
eakdo wn
wn
see Flat tyre
Butt
Butt ons
ons
St eering wheel....................................... 287 C
C
Calls
Calls Mercedes me......................................... 319
Camera
Camera
Information............................................ 226
Camera Camera see 360° Camera
see Dashcam
see Reversing camera
Car key
Car key
see Key
Car w Car w ash
ash
see Care
Car w
Car w ash (car
ash (car e)
e)............................................ 348
Car
Car -t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 313
Care
Care 360° camera......................................... 353
Air-water duct........................................ 348
Automatic car wash.............................. .348
Carpet................................................... 354
Decorative foil........................................ 352
Display................................................... 354 Exterior lighting...................................... 353
Head-up display..................................... 354
High-pressure cleaner............................3
50
Pa int...................................................... 351
Plastic trim............................................3 54
Re alwo od/trim elements..................... .354
Re versing camera..................................3 53
Ro of lining............................................. 354
Seat belt................................................ 354
Seat co ver............................................. 354
Sensors.................................................3 53
St eering wheel....................................... 354
Ta ilpipes................................................ 353
Tr ailer hitc h............................................ 353
Ve hicle soc ketfo rth e high-voltage
battery................................................... 353
Wa shing byhand.................................... 351
Wheels/rims.......................................... 353
Wi ndo ws................................................ 353
Wi per blades.......................................... 353
Car
Car pe pet (Car
t (Car e)
e)............................................... 354
Changing bulbs Changing bulbs Dipped beam......................................... 150
Fitting/removing co ver (front wheel
ar ch )...................................................... 149 Index
505 505

¸
temp orarily una vailable Sensors
dirty....................................................... 465
Ú Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 480
+ Top up coolant See Owner ’s
Manual.................................................. 445
¥ Top up washer 0uid...................... .443
u Towing not permitted See Own-
er's Manual ............................................ 432
d Trans. oil overheated Drive on
with care................................................ 450
! Turn on the ignition torelease
th e parking brake ................................... 455
Ú .................................................... 480
d Vehicle is operational Switch o.
ignition before exiting............................. 438
h Warning tyre defect....................... 477
h Wheel sensor(s) missing ................ 476Ú
XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 481
"Electric" drive prog ram cur rently
una vailable............................................. 434
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 463
Ac tive Blind Spot Assist inoperative........ 464
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual................................................. .464
Ac tive bonnet malfunction See Own-
er's Manual............................................ 441
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........471
Ac tive Brake Assist Functions limi ted
See Owner's Manual.............................. 472
Ac tive Distance Assist available again ..... 459
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 458Ac
tive Distance Assist inoperative.......... 459
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ............ 464
Ac tive Lane Keeping Assist inoperative... 464
Ac tive Steering Assist cur rently
una vailable due tomultiple emer-
ge ncy stops........................................... 461
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ............ 461
Ac tive Steering Assist inoperative...........4 61
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual ............ 427
Ad aptive Highbeam Assist inoperative ....4 28
Ad aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 428
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .428
Anti-theT alarm system Malfunction ....... 443
Apply brake todeselect Park (P) posi-
tion....................................................... .447 Index
511 511

Re
duced drive system per form ance
See Owner's Manual.............................. 434
Re versing not poss. Consult workshop ... 449
Risk of vehicle rolling away App ly
parking brake See Owner's Manual ........ 450
Risk of vehicle rolling Driver door
open and transmission not in P .............. 448
Ru n Flat Indica tor inoperative................. 479
Speed limit (winter tyres) XXX km/h .......460
Speed Limit Assist cur rently una vaila-
ble See Owner's Manual........................ 459
Speed Limit Assist inoperative................ 459
Te aching in transmission comple te......... 450
Te aching in transmission Operate
selector le ver Brake for XX seconds
Risk of vehicle rolling ............................. 450
To shiT out of P or N,depress brake
and start engine.................................... .447 To
switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 444
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 462
Tr a1c Sign Assist inoperative................. 462
Tr ansmission Malfunction ....................... 449
Tr ansmission Malfunction Stop............... 449
Tr ansmission Malfunction Visit work-
shop ...................................................... 451
Ty re press. monitor cur rently una vaila-
ble......................................................... 475
Ty re press. monitor inoperative .............. 475
Ty re press. monitor inoperative No
wheel sensors ........................................ 476
Ty re pressure Check tyres ...................... 478
Ty re(s) ove rheated .................................. 478
Ve hicle not cur rently being charged
Charging station fault............................. 433
Wi per malfunctioning .............................443 Wi
thout changing gear, consult work-
shop ............................................. .435, 448
Wi thout starting engine again, consult
wo rkshop ............................................... 435
Dist
Dist ance contr
ance contr ol
ol
see Active Distance Assist DISTRONIC
DIS DIS TR
TR ONIC ONIC
see Active Distance Assist DISTRONIC
Door
Door Additional door loc k................................. 84
Child saf ety lock (rear door )..................... 78
Locking/unlocking (emer gency key)........ .88
Opening (from inside).............................. .85
Unlo cking (from inside)............................ 85
Door contr
Door contr ol panel
ol panel......................................... 18
Do
Do wnhill dr
wnhill dr iving assist
iving assist ance
ance
see DSR
Dra
Dra wbar
wbar
see Tow- bar system
Dr
Dr iv
ive Awa
e Away Assi st
y Assi st........................................ .277
Dr
Dr iv
ive position
e position
Engaging................................................ 191 Index
513
513