2020 MERCEDES-BENZ GLS SUV Owners Manual

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

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
If ESP ®
cann otbe activated, ESP ®
is malfunctioning. #
Have ESP ®
ch ecked immediately at a qualified specialist workshop. #
Obser vethe no tes on deactivating ESP ®
(/ page 227). Ty
re pressure moni torWa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp
fl ashes *The
yellow tyre pressure monitor warning lamp (pressure loss/malfunction) flashes for appro ximately one minu te
and then remains lit.
The tyre pressu remonitor is malfunctioning. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
The tyre pressure monitoring sy stem cann otissue a warning if there is pressure loss in one or more of the tyres.
Ty res with insuf ficient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. 504
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp lights
up *T
he yellow tyre pressure monitoring sy stem warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring sy stem has de tected tyre pressure loss in at least one of the tyres. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
R The tyres can bu rst.
R The tyres can wearexc essively and/or une venly.
R The driving characteristics as well as thesteering 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 tra ffic conditions. #
Check the tyre pressure and the tyres. Display messages and
warning/indicator lamps 505

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

Air-recirculation mode..............................
17 7
Air-water duct Keeping free.......................................... 364
Airbag Activation................................................ 40
Cushionbag............................................. 45
Fr ont airbag (driver, front passenger)...... 45
Ins tallation locations.............................. .45
Knee airbag............................................ .45
Overview................................................. 45
PA SSENGER AIR BAG indicator lamp....... 50
Pr otection................................................ 46
Re duced pr otection.................................47
Side airba g.............................................. 45
Wi ndow airba g......................................... 45
Ai rflow
Setting................................................... 174
AIRM ATIC
Setting.................................................. .265
Suspension........................................... 262
Alarm sy stem
see ATA (anti-theft alarm sy stem)
All-wheel drive see 4MATIC Ambient lighting
Setting (multimedia sy stem)..................1 64
Android Auto
see Smartphone integration
Animals Pets in theve hicle................................... 77
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft pr otection
Ad ditional door loc k................................ .81
Immobiliser........................................... 102
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay ®
see Smartphone integration
Assistance sy stems
see Driving saf ety sy stem ASS
YST PLUS
Battery disconnection pe riods.............. 358
Displaying the service due dat e............. 357
Fu nction/no tes..................................... 357
Re gular maintenance work.................... 357
Special service requ irements................ 357
ATA (anti-theft ala rmsystem)
Deactivating the alarm.......................... 103
Fu nction................................................ 102
Fu nction of interior pr otection............... 103
Priming/deactivating interior pr otec‐
tion........................................................ 104
Priming/deactivating tow- aw ay pro‐
te ction................................................... 103
To w- aw ay protection function................1 03
AT TENTION ASSI ST
Fu nction................................................ 232
Setting................................................... 233
Sy stem limitations................................. 232
At tention assistant
see ATTENTION ASSIST
Au thorised workshop
see Qualified specialist workshop 508
Index

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