2020 MERCEDES-BENZ GLS SUV brake

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Do not top up the brake fluid. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
æ Ac tive Brake Assi stwa rning
lamp *T
he white Active Brake Assi stwa rning lamp is lit.
The sy stem is switched off or una vailable.
L Wa rning lamp for dis tance
wa rning function *T
he red dis tance 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 obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Fu nction of Active Brake Assi st (/ page 248). 500
Displaymessa ges and warning/indicator lamps

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

1,
2, 3 ...
4MATIC Function................................................. 211
12 V battery
see Battery (vehicle)
12 V so cket
see Soc ket (12 V)
48 V on-board electrical sy stem
Operating saf ety...................................... 24
230 V soc ket
see Soc ket (230 V)
360° Camera Care...................................................... 369
Fu nction................................................ 280
Opening the camera co ver (r eve rsing
camera)................................................. 283
Selecting a view................................... .283
Switching auto matic operation
on/off (r eversing camera).................... .283 A
A/C function Activating/deactivating (MBUX mul‐
timedia sy stem).....................................1 76
Switching on/off (control panel )........... 175
ABS (Anti-lock Braking Sy stem) .............. .226
Ac celeration
see Kickdown
Ac cident and Breakdown Manage‐
ment
Mercedes me connect........................... 334
Ac oustic locking verification signal
Ac tivating/deactivating........................... 79
Ac tive Blind Spot Assi st
Brake application................................. .259
Fu nction................................................ 257
Sy stem limitations................................. 257
Tr ailer operation.................................... 259
Ac tive Brake Assi st
Fu nction/no tes..................................... 24 8
Setting................................................... 253
Ac tive Di stance Assist DISTRO NIC
Ac tive Emergency Stop Assis t............... 24 8Calling up a spee
d................................. 239
Fu nction................................................ 236
Increasing/decreasing speed................ 239
Re quirements:...................................... .239
Ro ute-based speed adap tatio n.............. 24 2
Selecting............................................... 239
St eering wheel buttons......................... 239
St oring a speed.....................................2 39
Switching off/deactivating.................... 239
Switching on/activating........................ 239
Sy stem limitations................................. 236
Ac tive Eme rgency Stop Assist ................ .248
Ac tive headlamps...................................... 15 9
Ac tive Lane Keeping Assist
Ac tivating/deactivating......................... 262
Ac tivating/deactivating thewa rning.....2 62
Fu nction................................................ 260
Setting the sensitivity............................2 62
Sy stem limits.........................................2 60
Tr ailer operation.................................... 260
Ac tive Parking Assist
Exiting a parking space......................... .291
Fu nction................................................ 288
Pa rking................................................. .289 506
Index

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

Fu
nction................................................ 257
Sy stem limitations................................. 257
Blo wer
see Climate control
BlueTEC see AdBlue ®
Boot lid see Tailgate
Brake Assist Sy stem
see BAS (Brake Assi stSystem)
Brake fluid Notes..................................................... 424
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion).......................................................2 30
Brakes ABS (Anti-lock Braking Sy stem).............2 26
Ac tive Brake Assi st................................ 24 8
Ad aptive brake light s............................ .231
BA S (Brake Assi stSystem).................... 227
Driving tips............................................ 19 2
EBD (Electronic Brake forc e Distribu‐
tion)....................................................... 230 HOLD function......................................2
30
Limi ted braking ef fect (salt-trea ted
ro ads).................................................... 19 2
New/replaced brakepads/brake
discs...................................................... 19 0
Po st-collision brake................................. 54
Ru nning-in no tes.................................... 19 0
Braking assistance see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions................ 18
To w- starting.......................................... 390
To wing away.......................................... 386
Tr ansporting theve hicle........................ 388
Wheel chang e....................................... .402
Breakdown see Flat tyre
Buttons Steering wheel...................................... 306 C
Calls Mercedes me........................................ 335
Camera....................................................... 272Camera
see 360° Camera
see Reversing camera
Car key
see Key
Car wash
see Care
Car wash (care)......................................... 364
Car-to-X-Communication Displaying hazard warnings.................. .329
Care 360° camera......................................... 369
Air-water duct....................................... .364
Au tomatic car wash...............................3 64
Carpe t.................................................. .370
Decorative foil...................................... .368
Displ ay.................................................. 370
Exterior lighting.................................... .369
High-p ressure cleaner........................... 366
Pa int wo rk.............................................. 367
Plastic trim............................................ 370
Re alwo od/trim elements..................... 370
Re versing camera................................. .369
Ro of lining............................................. 37051 0
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