2020 MERCEDES-BENZ GLS SUV engine

Driving saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! ABS warning lamp *T
he yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If th ere is an additional warning tone, EBD is malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Thereis a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking.
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. ÷
ESP ®
wa rning lamp flashes *
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
One or more wheels has reached its grip limit (/ page 227). #
Adapt your driving style to suit thero ad and weather conditions. 502
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
÷ ESP ®
wa rning lamp lights
up *
The yellow ESP ®
wa rning lamp is lit while the engine is running.
ESP ®
is malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified specialist workshop. å
ESP ®
OFF warning lamp *
The yellow ESP ®
OFF warning lamp is lit while the engine is running.
ESP ®
is deacti vated.
Other driving sy stems and driving saf ety sy stems may also be inoperative. &
WARNING Risk of skidding when driving wi thESP ®
deacti vated
ESP ®
does not act tostabilise theve hicle. The availability of fur ther driving saf ety sy stems is also limited. #
Drive on carefull y. #
Deactivate ESP ®
only for as long as the situation requ ires. Display messages and
warning/indicator lamps 503

Sy
stem limitations................................. 288
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st
Displ ay................................................... 241
Fu nction................................................. 241
Ac tive Steering Assist
Ac tivating/deactivating......................... 24 8
Ac tive Emergency Stop Assis t............... 24 8
Fu nction................................................ 24 6
Sy stem limits.........................................2 46
Ac tive Traf fic Jam Assist
Ac tivating/deactivating......................... 24 4
Fu nction................................................ 24 3
Ad aptive brake lights................................ 231
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist Plus
Fu nction................................................. 161
Switching on/of f................................... 16 2Ad
Blue ®
Ad ditives................................................ 421
Capacity................................................ 422
No tes..................................................... 214
Purity..................................................... 421
To pping up............................................. 215
Ad ditional cushion
Leg rest.................................................. 11 2
Re ar head restra int................................ 11 9
Ad ditional door lo ck.................................... 81
Ad diti ves
Ad Blue ®
................................................. 421
Engine oil.............................................. 422
Fu el....................................................... 420
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
ADS PLUS damping sy stem
see AIRMATIC Af
ter-sales service centre
see ASS YST PLUS
Air conditioning menu Calling up............................................... 175
Air distribution Setting................................................... 174
Setting (MBUX multimedia sy stem)........ 176
Air freshener sy stem
see Frag rance sy stem
Air inlet see Air-water duct
Air pressure see Tyre pressure
Air suspension see AIRMATIC
Air vents
Ad justing (front).................................... 184
Ad justing (rear)..................................... .184
Glo vebox.............................................. 186
Air vents
see Air vents
Ai r-conditioning sy stem
see Climate control Index
507

Au
tomatic car wash mode
Ac tivating.............................................. 366
Au tomatic distance control
see Active Dis tance Assi stDISTRONIC
Au tomatic driving lights ...........................157
Au tomatic engine start (ECO start/
sto p function)............................................ 197
Au tomatic engine stop (ECO start/
sto p function)............................................ 197
Au tomatic front passen ger front air‐
bag deacti vation sy stem
see Automatic front passenger front
airbag shutoff
Au tomatic front passen ger front air‐
bag shu toff
Fu nction of the automatic front
passenger front airbag deactivation
sy stem..................................................... 48
PA SSENGER AIR BAG indicator lamp....... 50
Au tomatic measures af ter an accident..... 54
Au tomatic mir rorfo lding function
Ac tivating/deactivating......................... 172Au
tomatic seat adjustment
Setting................................................... 12 0
Au tomatic transmission
DIRECT SELECT le ver............................ 204
Drive program displa y........................... 203
Drive programs...................................... 201
DY NA MIC SELECT switch...................... 201
Engaging drive position......................... 206
Engaging neutral................................... 205
Engaging park position.......................... 206
Engaging reve rsege ar........................... 205
Kickdown............................................. .208
Manual gear changing.......................... .207
St eering wheel gearshift paddles.......... 207
Tr ansmission position displa y................ 204
Tr ansmission position s.......................... 204
Axle load Perm issible............................................ 41 5
Tr ailer operation.................................... 432 B
Bag hook .................................................... 14 4
Ball ne ck
Extending/r etra cting............................ .296 Extending/r
etra cting (MBUX multi‐
media sy stem)....................................... 297
BA S (Brake Assist Sy stem)....................... 227
Battery Key.......................................................... 80
Re mo tecontrol (s tationary heater)........ 182
Battery see Battery (vehicle)
Battery (vehicle) Charging................................................ 384
Charging (Remo teOnline)..................... 189
No tes....................................................3 80
No tes (s tarting assis tance and
ch arging)............................................... 382
Re placing.............................................. 385
St arting assis tance................................ 384
Belt see Seat belt
Bic ycle rack
Load capacity........................................ 432
Tr ailer operation.................................... 300
Blind Spot Assist Activating/deactivating......................... 259 Index
509

Inserting/removing
theflacon (fra‐
gr ance sy stem)...................................... 178
Ionisation...............................................1 78
No te....................................................... 174
Re ar air vents........................................ 184
Re ar operating unit................................ 175
Re sidual heat......................................... 17 7
Re sidual heat (rear operating unit)........ 178
Setting (MBUX multimedia sy stem)....... 175
Setting the air distribution..................... 174
Setting the air flow ................................. 174
Setting the fragrance sy stem.................1 78
Setting theve hicle interior temp era‐
ture........................................................ 174
St ationary heater/ ventilation................ 180
Switching on/of f................................... 175
Switching there ar wind owheater
on/off....................................................1 74
THERMATIC contro l panel...................... 174
THERMOTRONIC contro l panel..............174
Ve ntilating theve hicle (con venience
opening).................................................. 94
Wi ndsc reen heating............................... 17 9
Coat hook .................................................. .144 Cockpit
Overview................................................... 6
Cof fee cup symbol
see ATTENTION ASSIST
Collapsible spare wheel Inflating.................................................. 411
No tes....................................................4 09
Re moving............................................... 41 0
Collision de tection (pa rked vehicle) ........ 223
Combination switch .................................. 15 8
Compu ter
see On-board computer
Consum ption indicator
Calling up.............................................. 204
Con venience closing ................................... 95
Con venience opening ..................................94
Coolant (engine) Check le vel............................................ 362
No tes..................................................... 424
Cooling see Climate control
Co pyright..................................................... 38 Cornering light
...........................................1 59
Co ver
see Roller sunblind
Cross Traf fic Alert..................................... 293
Crosswind Assist Function/no tes..................................... 228
Cruise control Activating.............................................. 235
Buttons.................................................. 235
Calling up a spee d................................. 235
Deactivating.......................................... 235
Fu nction................................................ 233
Re quirements........................................ 235
Selecting.............................................. .235
Setting a speed..................................... 235
St oring a speed.....................................2 35
Sy stem limitations................................. 233
Cup holder Switching the cooling/heating func‐
tion on/off............................................1 46
Cushionbag.................................................. 45 512
Index

¯
AdBlue sy stem fault Emer‐
ge ncy op. in XXX miles See Owner's
Manual.................................................. 487
¯ AdBlue sy stem fault Engine
st art not possible................................. .488
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... .487
5 Add 1 litre engine oil when
next refuelling....................................... 488
é ATTENTION ASSIST inoperative ....460
é ATTENTION ASSIS T:Take a
break!....................................................4 60
: Automatic driving lights inoper‐
ative...................................................... 439
Á Change key bat teries .................... 437
J Check brake fluid le vel................. 459
# Check brake pads See Owner's
Manual.................................................. 459
ï Check trailer hitch lo ck................ 443
h Check tyre(s)............................... .483 !
Clean the fuel filter ...................... 452
Á Compressor is cooling ..................473
ÿ Coolant Stop vehicle Switch
engine off..............................................4 51
_ Currently una vailable Camera
view restricted....................................... 469
ç Currently unavailable Radar
sensors dirty.........................................4 68
! currently una vailable See Own‐
er's Manual ............................................ 474
÷ currently una vailable See Own‐
er's Manual ............................................ 475
5 Engine oil le vel cannot be
measured .............................................. 490
5 Engine oil le velRe duce oil le vel.... 489
5 Engine oil le velSt op vehicle
Switch engine off.................................. 489
5 Engine oil pressure Stop
Switch off engine.................................. 490 ä
Fault Drive at max. 80 km/h
...................................................... 470, 471
ä Fault Stop.....................................4 71
6 Front left malfunction Consult
wo rkshop (e xample).............................. 434
& inoperative Battery low................ 442
& inoperative Refuel vehicle ............ 442
& inoperative See Owner's Man....... 441
! inoperative See Owner's Manual ..475
÷ inoperative See Owner's Manual ..476
T inoperative See Owner's Man‐
ual......................................................... 477
G Inoperative................................... 478
î inoperative................................... 463
: Intelligent Light Sy stem inoper‐
ative...................................................... 440
Á Key not de tected (red displ ay
messa ge)............................................... 438
Á Key not de tected (white displ ay
messa ge)............................................... 437 514
Index

:
Left dipped beam (e xamp le)........ .439
6 Left wind owbag malfunction
Consult workshop (e xample)................ .434
 Lowe ring....................................... 472
: Malfunction See Owner's Man‐
ual......................................................... 439
î Max. speed 40 km/h...................4 64
ð Maximum speed exceeded ........... 463
î Notpossible in cur rent drive
program ................................................ 464
Ø ..................................................... 486
ç Off................................................ 462
ë Off................................................ 460
ï Operation only possible in
transmission position P .........................443
! Parking brake See Owner's
Manual .................................................. 455
Á Please reduce speed .................... 473
Ý Please wait 48 V battery charg‐
ing ........................................................ .481 h
Rectify tyre pressure.................... 483
Ø Refill Ad Blue See Owne r’s
Manual.................................................. 485
! Release parking brake .................. 458
¸ Replace air cleaner ...................... 452
Á Replace key.................................. 437
8 Reser vefuel le vel......................... 452
6 Restra int sys. malfunction Con‐
sult workshop........................................ 434
# See Owner's Manual....................4 79
y Siderunning board not exten‐
ded........................................................ 445
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual ......446
Ù Steering malfunction Stop
immediately See Owner's Manual .........446
# Stop vehicle Lea veengine run‐
ning ....................................................... 480
# Stop vehicle See Owner's Man‐
ual......................................................... 480 ç
suspended................................... 462
: Switch off lights...........................4 40
: Switch on headla mps................... 440
Ø Top up AdBlue Emergency op.
in XXX miles See Owner's Manual......... 486
+ Top up coolant See Owner ’s
Manual.................................................. 450
¥ Top up washer fluid ...................... 450
ï Trailer coupling extending…......... 443
! Turn on the ignition torelease
th e parking brake..................................4 59
d Vehicle is operational Switch
off ignition before exiting..................... .443
Á Vehicle rising Please wait............ .472
Á Vehicle rising................................4 72
h Warning tyre defect..................... .484
h Wheel sensor(s) missing .............. 482
Ø XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss................................................ 486 Index
515

Ac
tive Blind Spot Assi stcur rently
una vailable See Owner's Manual ...........467
Ac tive Blind Spot Assi stinope rative ...... 467
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual .................................................. 467
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual........ 477
Ac tive Brake Assi stFunctions limited
See Owner's Manual.............................. 478
Ac tive Dis tance Assi stavailable again ...4 63
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual ...........462
Ac tive Dis tance Assi stinope rative ........ 462
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ...........468
Ac tive Lane Keeping Assist inopera‐
tive........................................................ 468 Ac
tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops...........................................4 65
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ...........464
Ac tive Steering Assist inoperative ......... 464
Ac tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual ...........465
Ac tive Stop-and-Go Assist inopera‐
tive See Owner's Manual....................... 466
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual......................................................... 441
Ad aptive Highbeam Assist Plus inop‐
erative.................................................. .441
Anti-theft alarm sy stem Malfunction ..... 450
Apply brake todeselect Park (P)
position................................................. 453
Apply brake toselect D or R..................4 53
Apply brake toselect R......................... 453 Au
xilia rybattery malfunction ................ 455
Beginning emer gency stop.................... 465
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ........................ 466
Blind Spot Assist inope rative ................. 467
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual .....4 67
Cann otstart engine See Owner's
Manual................................................. .481
Cruise cont rol and Limiter inope rative... 461
Cruise control inope rative..................... 461
Cruise control off................................... 461
Device de tected at diagnostics con‐
nection See Owner's Manual................. 478
Drive sy stem Malfunction Stop
Switch engine off.................................. 452
Drive sy stem Malfunction Visit work‐
shop......................................................4 52
Fr ont-passenger airbag disabled See
Owner's Manual....................................4 35516
Index