2021 MERCEDES-BENZ GLS SUV sensor

Engine
Engine
W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ÿ
Coolant warning lamp (red) *T
he red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
R The engine coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. Do not continue driving. 508
508
Displ
aymessages and warning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Notethe messages on the instrument displa y.
If t
If t he coolant t
he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the low
he lower end of t
er end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Consult a quali/ed specialist workshop.
If t
If t he coolant t
he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the upper end of t
he upper end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Exit theve hicle and keep a safe distance from it until the engine has cooled down. #
Check the coolant le vel (/ page 369). #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ
Coolant warning lamp (yel-
low) *T
he yellow coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The charge air, transmission oil or battery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
509
509

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
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 253).
ä
Suspension warning lamp
(yellow) *T
he yellow AIRMATIC / E- ACTIVE BODY CONTROL warning lamp is lit.
A fault has occur red in AIRMATIC / E- ACTIVE BODY CONTROL. #
Notethe messages on the instrument displa y.
ä
Suspension warning lamp
(red) *T
he red AIRMATIC / E- ACTIVE BODY CONTROL warning lamp is lit.
A fault has occur red in AIRMATIC / E- ACTIVE BODY CONTROL.
* N
NO OTE
TE The vehicle's driving characteristics will ha vechanged signi/cantl y. #
Consult a quali/ed specialist workshop. 514
514
Displ
aymessages and warning/indicator lamps

BAS
(Brake Assist System).................... .231
Driving tips............................................ 195
EBD (Electronic Brake forc e Distribu-
tion).......................................................2 35
HOLD function....................................... 235
Limited braking e.ect (salt-treated
ro ads)................................................... .195
Ne w/replaced brake linings/brake
discs...................................................... 193
Po st-collision brak e.................................. 57
Ru nning-in no tes.................................... 193
Br Br aking assist
aking assist ance
ance
see BAS (Brake Assist System)
Br
Br eakdo
eakdo wn
wn
Assistance overview. ................................ 18
To w- starting........................................... 397
To wing away.......................................... 394
Tr anspo rting theve hicle........................ .395
Wheel chang e........................................ 409
Br
Br ea kdo
eakdo wn
wn
see Flat tyre
Butt
Butt ons
ons
St eering wheel....................................... 310 C
C
Calls
Calls Mercedes me......................................... 340
Camera
Camera
Information............................................ 229
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)............................................ 371
Car
Car -t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 334
Care
Care 360° camera......................................... 376
Air-water duct........................................ 371
Automatic car wash.............................. .371
Carpet................................................... 378
Decorative foil........................................ 375
Display................................................... 378 Exterior lighting...................................... 376
Head-up display..................................... 378
High-pressure cleaner............................3
74
Pa int...................................................... 374
Plastic trim............................................3 78
Re alwo od/trim elements..................... .378
Re versing camera..................................3 76
Ro of lining............................................. 378
Ru nning boa rds...................................... 376
Seat belt................................................ 378
Seat co ver............................................. 378
Sensors.................................................3 76
St eering wheel....................................... 378
Ta ilpipes................................................ 376
Tr ailer hitc h............................................ 376
Wa shing byhand.................................... 374
Wheels/rims.......................................... 376
Wi ndo ws................................................ 376
Wi per blades.......................................... 376
Car
Car pe pet (Car
t (Car e)
e)............................................... 378
Changing g Changing g ears ears
Manually................................................ 211
Changing hub caps
Changing hub caps ....................................... 409 Index
523
523

ç
O................................................ .473
ë O.................................................4 71
ï Operation only possible in
transmission position P .......................... 452
! Parking brake See Owner's
Manual..................................................4 67
Á Please reduce speed .................... .486
Ý Please wait 48 V battery charg-
ing......................................................... 494
h Rectify tyre pressure ..................... 497
Ø Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 499
! Release parking brake ...................469
¸ Replace air cleaner ....................... 463
Á Replace key.................................. 446
8 Reser vefuel le vel.......................... 463
6 Restraint sys. malfunction Con-
sult workshop ....................................... .443
# See Owner's Manual..................... 492
y Siderunning boa rdnot extended ... 455 Ù
Steering malfunction Increased
ph ysical e.ort See Owner's Manual....... 456
Ù Steering malfunction Stop
immediately See Owner's Manual ........... 456
# Stop vehicle Lea veengine run-
ning ....................................................... 494
# Stop vehicle See Owner's Man-
ual......................................................... 493
ç suspended .................................... 473
: Switch o. lights............................ 449
: Switch on headlamps .................... 449
á temp orarily una vailable Camera
view restric ted....................................... 482
¸ temp orarily una vailable Sensors
dirty....................................................... 481
Ø Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 499
+ Top up coolant See Owner ’s
Manual.................................................. 461
¥ Top up washer 0uid...................... .460 ï
Trailer coupling extending…........... 453
! Turn on the ignition torelease
th e parking brake ................................... 470
d Vehicle is operational Switch o.
ignition before exiting............................. 452
Á Vehicle rising Please wait.............. 485
Á Vehicle rising ................................ 485
h Warning tyre defect....................... 497
h Wheel sensor(s) missing ................ 496
Ø XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 500
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 479
Ac tive Blind Spot Assist inoperative........ 479
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual................................................. .480
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........490 528 528
Index

Head-up display cur
rently una vailable
See Owner's Manual.............................. 455
Head-up display inoperative ...................455
Limiter inoperative................................. 472
Limiter passive....................................... 472
LO W RANGE Malfunction....................... 458
LO W RANGE Malfunction Topar k,
apply parking brake ................................ 458
LO W RANGE Max. speed 10 km/h ......... 459
LO W RANGE Max. speed 40 km/h ......... 459
LO W RANGE Not in drive prog ram
"Sport".................................................. .458
LO W RANGE only when vehicle sta-
tionary................................................... 457
LO W RANGE ShiT toposition N brie0y... .458
LO W RANGE ShiTing cancelled Please
re activate.............................................. 458
LO W RANGE Stop Apply parking brake ... 459
Mo tor can be star ted again .................... 495 N permanently active Risk of
vehicle
ro lling....................................................4 65
Only select Park (P) when vehicle is
stationary.............................................. 464
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 486
Place theke y in the mar ked space
See Owner's Manual.............................. 447
PRE-SAFE impulse side inoperative
See Owner's Manual.............................. 445
PRE-SAFE inoperative See Owner's
Manual.................................................. 445
Re duce speed........................................ 498
Re versing not poss. Consult workshop ... 465
Risk of vehicle rolling Driver door
open and transmission not in P .............. 465
Side running boa rdnot retracted
Obser vetheex cess width of theve hi-
cle......................................................... 454
Speed limit (winter tyres) XXX km/h .......475 Speed Limit Assist cur
rently una vaila-
ble See Owner's Manual........................ 474
Speed Limit Assist inoperative................ 474
St op vehicle Lea veengine running
Wa itTransmission cooling ......................466
To shiT out of P or N,depress brake
and start engine.................................... .464
To switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 461
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 478
Tr a1c Sign Assist inoperative................. 478
Tr ansmission Malfunction Stop............... 465
Ty re press. monitor cur rently una vaila-
ble......................................................... 495
Ty re press. monitor inoperative .............. 495
Ty re press. monitor inoperative No
wheel sensors ........................................ 496
Ty re(s) ove rheated .................................. 498 530 530
Index

Update
failed......................................... 452
Update failed SoTware remains
unchanged............................................. 452
Update successfully comple ted.............. 452
Wi per malfunctioning .............................460
Wi thout changing gear, consult work-
shop ...................................................... 465
Dist
Dist ance contr
ance contr ol
ol
see Active Distance Assist DISTRONIC
DIS
DIS TR
TRONIC
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
Po we r closing function............................. 87
Unlocking (from inside)............................ 85
Door contr
Door contr ol panel
ol panel......................................... 14
Door contr
Door contr ol panel (r
ol panel (rear)
ear) ................................ 16
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........................................ .295
Dr
Dr iv
ive position
e position
Engaging................................................ 211
Dr
Dr iv
ive pr
e pr ogr
ogram display
am display .................................. 207
Dr
Dr iv
ive pr
e pr ogr
ograms
ams
see DYNAMIC SELECT
Dr
Dr iv
iver's seat
er's seat
see Seat
Dr
Dr iving abr
iving abr oad
oad
Light adjustment (l owbeam).................. 160
Dr
Dr iving safe
iving safe ty syst
ty system
em
ABS (Anti-lock Braking System)............. .231
Ac tive Brake Assist................................. 253
Ad aptive brake lights.............................. 236
BAS (Brake Assist System).................... .231
Cameras................................................2 29
EBD (Electronic Brake forc e Distribu-
tion).......................................................2 35
ESP ®
Crosswind Assist.......................... 233
ESP ®
trailer stabilisation........................ 233
O.- road ABS.......................................... 231 Overview...............................................
.230
Ra dar and ultrasonic sensor s................. 229
Re sponsibility......................................... 229
ST EER CONTROL................................... 235
Dr
Dr iving syst
iving syst em
em
see 360° Camera
see Active Blind Spot Assist
see Active Distance Assist DISTRONIC
see Active Emer gency Stop Assist
see Active Lane Keeping Assist
see Active Parking Assist
see Active Speed Limit Assist
see Active Steering Assist
see AIRMATIC
see ATTENTION ASSIST
see Blind Spot Assist
see Cruise cont rol
see Driving saf ety sy stem
see DSR
see E- ACTIVE BODY CONTROL
see HOLD function
see Limiter
see Parking Assist PARKTRONIC
see Reversing camera
see Speed Limit Assist Index
531 531

F
F
og light (enhanced)
og light (enhanced) .................................... .164
F
F oil cov
oil cov er
ering
ing
Ra dar and ultrasonic sensor s................. 229
F
F olding t
olding t able
able................................................ 138
Fr
Fr agr
agr ance
ance
see Frag rance system
Fr
Fr agr
agr ance syst
ance syst em
em
Inserting/ removing the 0acon................1 82
Setting................................................... 182
Fr
Fr ee dr
ee dr iving mode
iving mode
St arting................................................ .280
Fr
Fr ee
ee soTw
soTw are
are................................................. 41
Fr
Fr eq
eq uencies
uencies
Mobile phone......................................... 421
Tw o-w ayradio........................................ 421
Fr
Fr ont airbag (dr
ont airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er).............. 48
Fr
Fr ont passeng
ont passeng er seat
er seat
Ad justing from the driver's seat.............. 111
Ad justing from there ar.......................... 112
Fr
Fr ont passeng
ont passeng er seat
er seat
see Seat F
F
uel
uel
Additives................................................ 427
Diesel.................................................... 427
E10........................................................ 426
Fu elreser ve........................................... 429
Low outside temp eratures...................... 427
Pe trol..................................................... 426
Quality (diesel )....................................... 427
Quality (petrol)....................................... 426
Re fuellin g.............................................. .216
Sulphur content..................................... 426
Ta nk content.......................................... 429
F F uel consump
uel consump tion indicat
tion indicator
or
Calling up.............................................. 208
F
F unction seat
unction seat
see Door cont rol panel
F
F unction seat (r
unction seat (r ear)
ear)
see Seat (rear)
F
F uses
uses
Before replacing a fuse.......................... 397
Fu se assignment diag ram. ...................... 397
Fu se box in the engine compartment......3 98
Fu se box in the front passenger foot-
we ll........................................................ 399 Fu
se box in the load compartment......... 399
Fu se box on the dashboar d.................... 399
No tes..................................................... 397 G
G
Gar
Gar ag
age door opener
e door opener
Clea ring the memory.............................. 225
Gar
Gar ag
age door openers
e door openers
Opening/closing the door......................2 25
Prog ramming buttons............................. 223
Re solving problems................................ 225
Syn chronising thero lling code................ 224
Gear
Gear shiT
shiT r
recommendation
ecommendation........................... 212
Genuine par
Genuine par ts
ts................................................ 23
Glide mode
Glide mode.................................................. 212
Glov
Glov e box
e box
Air vent.................................................. 188
Gr
Gr oss mass
oss mass.................................................. 423 H
H
Handbr
Handbr ake
ake
see Electric parking brake
Handling c
Handling c har
haract
acter
eris
istics (unusual)tics (unusual) ................ 400 534
534
Ind
ex