2021 MERCEDES-BENZ GLS SUV lights

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W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ü
Seat belt warning lamp
lights up *T
he red seat belt warning lamp lights up once theve hicle has star ted.
In addition, an intermittent warning tone may sound.
The red seat belt warning lamp reminds the driver and front passenger tofasten their seat belts. #
Fasten your seat belt (/ page 46).
If yo u ha veplaced objects on the front passenger seat, there d seat belt warning lamp may remain lit. V
V
ehicle
ehicle W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Ù
Po we r steering warning
lamp (red) *T
he red po wer steering warning lamp is lit while theve hicle is running.
The po wer assistance or the steering itself is malfunctioning. &
W
WARNING
ARNING Risk of accident if steering capability is impaired
If th e steering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and tra1c conditions. Do not
continue driving under any circums tances. #
Consult a quali/ed speciali stwo rkshop. #
Notethe messages on the instrument displa y.506
506
Display message
s andwarning/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
8
Fu elreser vewarning lamp
lights up *T
he yellow fuel reser vewarning lamp lights up while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel. Br
Br
ak
ak es
es W
W
ar
ar ning/indicat
ning/indicat or lamp P
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
!
Electric parking brake indi-
cator lamp (red)
!
The electric parking brake
(yellow) indicator lamp *T
he red electric parking brake indicator lamp 0ashes or is lit.
The yellow electric parking brake indicator lamp is also lit in theev ent of a malfunction. #
Notethe messages on the instrument displa y. Display messages and
warning/indicator lamps
511 511

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Stop in a safe location immediatel y.Do not continue driving! #
Consult a quali/ed specialist workshop. &
W
W ARNING
ARNING Risk of an accident due tolow brake 0uid le vel
If th e brake 0uid le vel is too lo w,the braking e.ect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and tra1c conditions. Do not continue driving. #
Consult a quali/ed specialist workshop. #
Do not top up the brake 0uid. 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 253). Display messages and
warning/indicator lamps
513
513

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
÷
ESP ®
wa rning lamp 0ashes *
The yellow ESP ®
wa rning lamp 0ashes while theve hicle is in motion.
One or more wheels ha vereached their grip limit (/ page 232). #
Adapt your driving style tosuit thero ad and weather conditions.
÷ ESP ®
wa rning lamp lights up *
The yellow ESP ®
wa rning lamp is lit while theve hicle is running.
ESP ®
is malfunctioning.
Other driving systems and driving sa fety systems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the instrument displa y. &
W
WARNI NG
ARNI NGRisk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot carr y outvehicle stabilisation. In addition, other driving saf ety sy stems are
swit ched o.. #
Drive on carefull y. #
Have ESP ®
ch ecked at a quali/ed specialist workshop. å
ESP ®
OFF warning lamp *
The yellow ESP ®
OFF warning lamp is lit while theve hicle is running.
ESP ®
is deactivated.
Other driving systems and driving sa fety systems may also be inoperative. 516
516
Display messages 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
Ty res with insu1cient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring system checked at a quali/ed specialist workshop. h
Ty re pressure monitoring
system warning lamp lights
up *T
he yellow tyre pressure monitoring system warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring system has de tected tyre pressure loss in at least one of the tyres. &
W
WARNING
ARNING Risk of an accident due toinsu1cient tyre pressure
R The tyres can burst.
R The tyres can wearexcessively and/or une venly.
R The driving characteristics as well as the steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle in accordance with the tra1c conditions. #
Check the tyre pressure and the tyres. 518
518
Display messages and
warning/indicator lamps

A
A
ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 252
Ac tive Emer gency Stop Assist................ 253
Fu nction................................................ 251
System limits......................................... 251
A
A ctiv
ctiv e
eTr
Tra1c
a1c Jam Assist
Jam Assist
Ac tivating/deactivating.......................... 249
Fu nction................................................ 248
A A dap dap tiv
tive br
e br ak
ake lights
e lights .................................... 236
A
A dap
dap tiv
tive cr
e cr uise contr
uise contr ol
ol
see Active Distance Assist DISTRONIC
A
A dap
dap tiv
tive functions, MUL
e functions, MUL TIBEAM LED
TIBEAM LED
see Intelligent Light System
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus
Fu nction................................................ 165
Switching on/o..................................... 166
A
A dBlue
dBlue ®
®
Ad ditives................................................ 429
Capacity................................................ 430
No tes..................................................... 219
Purit y.................................................... .429
To pping up............................................ .220 A
A dditional cushion dditional cushion
Leg rest................................................. 115
Re ar head restraint................................ 122
A
A dditional door lo ck
dditional door lock ....................................... 84
A
A dditiv
dditiv es
es
Ad Blue ®
................................................ .429
Engine oil............................................... 430
Fu el....................................................... 427
A
A dditiv
dditiv es (A
es (AdBlue
dBlue ®
®
)
)
see AdBlue ®
A
A dditiv
dditiv es (engine oil)
es (engine oil)
see Additives
A
A dditiv
dditiv es (fuel)
es (fuel)
see Fuel
ADS PL
ADS PL US dam
US dam ping syst
ping syst em
em
see AIRMATIC
ATer
ATer -sales
-sales ser
service
vice
see ASS YST PLUS
Air conditioning menu
Air conditioning menu Calling up.............................................. 179
Air dis
Air distr tribution
ibution
Setting................................................... 178
Setting (MBUX multimedia system)......... 180 Air fr
Air fr
eshener syst
eshener syst em
em
see Frag rance system
Air inlet
Air inlet see Air-water duct
Air pr
Air pr essure
essure
see Tyre pressure
Air suspension
Air suspension
see AIRMATIC
Air v
Air v ents
ents
Ad justing (front)..................................... 186
Ad justing (rear)...................................... 187
Glo vebox............................................... 188
Air v
Air v ents
ents
see Air vents
Air
Air -conditioning syst
-conditioning syst em
em
see Climate cont rol
Air
Air -r
-recir
ecir culation mode (wit
culation mode (wit h
h/ne
/ne
par
par ticle
ticle pr
pre/lt
e/lt er)
er).......................................... 181
Air
Air -w
-wat
ater duct
er duct
Ke eping free.......................................... 371
Airbag
Airbag
Activation................................................ 43
Cushionbag.............................................. 48 520
520
Index

A
A
ut
ut omatic dr
omatic dr iving lights
iving lights................................ 161
A
A ut
ut omatic engine st
omatic engine st art
art
see ECO start/s top function
A
A ut
ut omatic engine st
omatic engine st op
op
see ECO start/s top function
A
A ut
ut omatic fr
omatic fr ont passeng
ont passeng er airbag
er airbagshut
shuto.
o.
PA SSENGER AIR BAG indicator la mps...... 53
A
A ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident ............ 57
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function
Ac tivating/deactivating.......................... 176
A
A ut
ut omatic seat adjus
omatic seat adjustment tment
Setting................................................... 123
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 209
Drive prog rams...................................... 205
DY NAMIC SELECT switch....................... 205
Engaging drive position.......................... 211
Engaging reve rsege ar............................ 210
Kickdown............................................... 212
Manual gear changing........................... .211
Selecting park position........................... 210
St eering wheel gearshiT paddles............ 211
Tr ansmission position displ ay................. 209
Tr ansmission position s........................... 209 Axle load Axle load
Perm issible............................................ 423
Tr ailer operatio n.................................... .441 B
B
Bag hook
Bag hook..................................................... 148
Ball neck
Ball neck Extending/r etra cting............................. .299
Extending/r etra cting (MBUX multime-
dia system)............................................ 301
B
B AS (Br
AS (Br ak
ake Assis
e Assis t Syst
t System)
em)........................... 231
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 83
Batt
Batt er
ery (v
y (v ehicle)
ehicle)
Charging (Remo teOnline)..................... .192
No tes..................................................... 387
No tes (starting assis tance and charg-
ing)........................................................ 389
Belt
Belt see Seat belt
Bicy
Bicy cle r
cle r ack
ack
Load capacit y........................................ 440
Tr ailer operatio n.................................... .304 Blind Spo
Blind Spo t Assist
t Assist
Ac tivating/deactivating.......................... 264
Fu nction................................................ 261
System limi tations.................................. 261
Blow
Blow er
er
see Clima tecont rol
BlueTEC BlueTEC see AdBlue ®
Bonnet Bonnet Opening/closing.................................... 365
Boo
Boo t lid
t lid
see Tailgate
Br
Br ak
ak e Assis
e Assist Syst t System
em
see BAS (Brake Assist System)
Br
Br ak
ak e
e0uid
0uid
No tes..................................................... 432
Br
Br ak
ak e f
e f or
orce disce distr tribution
ibution
EBD (Elect ronic Brake forc e Distribu-
tion)....................................................... 235
Br
Br ak
ak es
es
ABS (Anti-lock Braking System).............. 231
Ac tive Brake Assist................................. 253
Ad aptive brake lights.............................. 236 522 522
Index

5
Add 1 litre engine oil when next
re fuelling ............................................... 502
é ATTENTION ASSIST inoperati ve..... 471
é ATTENTION ASSIS T:Take a
break!.................................................... 471
: Automatic driving lights inoper-
ative...................................................... 448
_ Cannot fold 2nd seat row for-
wa rds See Owner's Manual .................... 460
Á Change key batteries .................... 446
J Check brake 0uid le vel.................. 470
ï Check trailer hitch lock (white
display message) .................................... 453
h Check tyre(s) ................................ 496
! Clean the fuel /lter....................... 463
Á Compressor is cooling .................. 486
ÿ Coolant Stop vehicle Switch
engine o............................................... 462
! currently una vailable See Own-
er's Manual............................................4 87÷
currently una vailable See Own-
er's Manual............................................4 88
5 Engine oil le vel cannot be meas-
ured....................................................... 503
5 Engine oil le velRe duce oil le vel..... 502
5 Engine oil le velSt op vehicle
Switch engine o.................................... 502
5 Engine oil pressure Stop Switch
o. engine.............................................. 503
ä Fault Drive at max. 80 km/h
...................................................... 483, 484
ä Fault Stop.................................... .484
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 43
& inoperative Battery low................. 451
& inoperative Refuel vehicle............. .451
& inoperative See Owner's Man........ 451
! inoperative See Owner's Manual.. .488
÷ inoperative See Owner's Manual.. .489
T inoperative See Owner's Manual.. .490 G
Inoperative................................... 491
î inoperative....................................4 75
: Intelligent Light System inopera-
tive........................................................ 449
Á Key being initialised Please wait.... 447
Á Key not de tected (red display
message).............................................. .447
Á Key not de tected (white display
message).............................................. .446
: LeT dipped beam (e xample).......... 448
6 LeT windowbag malfunction
Consult workshop (e xample).................. 443
 Lowe ring....................................... 485
: Malfunction See Owner's Man-
ual ......................................................... 448
î Max. speed 40 km/h .................... 476
ð Maximum speed exceeded ............ 475
î Not possible in cur rent drive
prog ram................................................. 475
Ø .................................................... 499 Index
527 527