2019 MERCEDES-BENZ GLS SUV engine

Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
; Engine diagnosis warning
lamp The
yellow engine diagno stics warning lamp is lit while the engine is running.
A malfunction has occu rred in the engine, theex haust sy stem or the fuel sy stem.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a qualified specialist workshop.
Ve hicles with a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times af terre fuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency operation mode is cancelled. The vehicle need not
be checked.
# Elect rical fault warning
lamp The
red elect rical fault warning lamp is lit.
There is a fault in the electrics. #
Obser vethe messages on the multifunction displa y.
8
Fu elreser ve wa rning lamp The
yellow fuel reser vewarning lamp is lit while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel. Displ
aymessa ges and warning/indicator lamps 673

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
? Coolant warning lamp The
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
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. Do not con‐
tinue driving under any circums tances. #
Obser vethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop. 674
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
or #
Exit theve hicle and keep a safe dis tance from it until the engine has cooled down. #
Check the coolant le vel (/ page 536). #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that the
coolant temp erature display remains below 120 °C. Ty
res Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressure monitoring
sy stem warning lamp lights
up The
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
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired. Display messages and
warning/indicator lamps 675

Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ï Tr ailer tow hit chwarning
lamp The
red trailer tow hit chwarning lamp is on.
The trailer tow hit chis not operational or swivels. &
WARNING Risk of an accident if the ball neck is not loc ked
If th e ball neck is not in the loc ked position, the trailer may come loose. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivelling procedure and do not re-couple the trailer until the display message disappears. #
Obser vethe messages on the multifunction displa y.
If th e trailer hitch swivels: #
Wait until the ball coupling has reached the operational position.
Ù
Po we rst eering sy stem
wa rning lamp The
red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer-assis tedsteering or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. Display messages and
warning/indicator lamps 677

Ac
tive headlamps .................................... 16 0
Ac tive Lane Change Assi st..................... 255
Ac tivating/deactivating ...................... .257
Fu nction .............................................. 255
Ac tive Lane Keeping Assist .................... 309
Ac tivating/deactivating ........................ 311
Ac tivating/deactivating thewa rning .... 311
Fu nction .............................................. 309
Setting the sensitivity ........................... 311
Sy stem limitations ...............................3 09
Ac tive Parking Assist .............................. 293
Cross Traf fic Alert ............................... 299
Drive AwayAssi st................................ 298
Exiting a pa rking space ...................... .296
Fu nction .............................................. 293
Manoeuvring assi stance ...................... 300
Pa rking ................................................ 295
Sy stem limitations ...............................2 93
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st....................... 251
Display ................................................. 251
Fu nction ............................................... 251 Ac
tive Steering Assist ............................ .253
Ac tivating/deactivating ...................... .255
Ac tive Emergency Stop Assist .............2 57
Ac tive Lane Change Assi st.................. 255
Displa ysinthe instrument display .......2 58
Fu nction .............................................. 253
Sy stem limitations ...............................2 53
Ac tive Traf fic Jam Assist
Fu nction .............................................. 257
Ad aptive brake lights ..............................241
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 .............................................. 16 2
Switching on/off ................................. 16 3
Ad Blue ®
.................................................... 601
Ad ditives .............................................. 601
Capacity .............................................. 602
Consum ption ...................................... .602
Fill le vel .............................................. .325
No tes ................................................... 215
Purity ................................................... 601 Ra
nge ................................................. .325
To pping up ...........................................2 16
Ad ditional door lo ck.................................. 86
Ad diti ves.................................................. 602
Ad Blue ®
............................................... 601
Engine oil ............................................ 602
Fu el ..................................................... 600
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing the balance/ fader
Burmes ter®
high-end 3D sur round
sound sy stem ....................................... 51 8
Burmes ter®
sur round sound sy stem ....5 17
Ad justing the bass, mid- range and
treble
Burmes ter®
high-end 3D sur round
sound sy stem ....................................... 51 8680
Index

Au
thorised workshop
see Qualified specialist workshop
Au tomatic car wash mode
Ac tivating ............................................ 540
Au tomatic distance control
see Active Dis tance Assi stDISTRONIC
Au tomatic driving lights .........................15 8
Au tomatic engine start (ECO start/
sto p function) .......................................... 19 8
Au tomatic engine stop (ECO start/
sto p function) .......................................... 19 8
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 ........................................... 46, 47
Fu nction of the automatic front
passenger front airbag deactivation
sy stem ................................................... 46
PA SSENGER AIR BAG indicator lamp .... .47
Au tomatic mir rorfo lding function
Ac tivating/deactivating ...................... .173 Au
tomatic seat adjustment
Setting ................................................ .123
Au tomatic transmission
DIRECT SELECT le ver ......................... .205
Drive program display ......................... 204
Drive programs ................................... .203
DY NA MIC SELECT switch .................... 203
Engaging drive position ....................... 207
Engaging neutral ................................. 206
Engaging park position ........................ 207
Engaging reve rsege ar ........................ .206
Kickdown ............................................ 209
Manual gear changing ........................ .207
St eering wheel gearshift paddles ........ 207
Tr ansmission position display .............. 205
Tr ansmission positions ........................ 205
Axle load Perm issible .......................................... 595
Tr ailer operation .................................. .610 B
Bag hook .................................................. 14 5
Baidu CarLife Trans ferred vehicle data ......................4 75Ball ne
ck
Extending/r etra cting ........................... 312
BA S (Brake Assist Sy stem) .................... .229
Battery Key ........................................................ 84
Re mo tecontrol (s tationary heater) ...... 185
Battery see Battery (vehicle)
Battery (vehicle) ...................................... 562
Charging .............................................. 561
No tes ................................................... 557
No tes (s tarting assis tance and
ch arging) ............................................ .559
Re placing ............................................ 562
St arting assis tance .............................. 561
Belt see Seat belt
Bic ycle rack
Tr ailer operation .................................. .316
Blind Spot Assi st..................................... 306
Ac tivating/deactivating ...................... .309
Fu nction .............................................. 306
Sy stem limitations ...............................3 06 Index
683

Cof
fee cup symbol
see ATTENTION ASSIST
Collapsible spare wheel .......................... 589
Inflating ............................................... 591
No tes .................................................. 589
Re moving ............................................ 590
Combination switch ................................15 8
Compass .................................................. 444
Compu ter
see On-board computer
Connection status
Displ aying ............................................ 490
Overview ............................................ .490
Connectivity Switching transmission of theve hicle
position on/off .................................... 390
Contacts ................................................... 461
Calling up ............................................ 462
Deleting ............................................... 464
Deleting favo urites .............................. 464
Downloading (from mobile phone) ...... 462
Importing ............................................ 463
Importing (o verview) .......................... .463 Information .......................................... 461
Making a call ....................................... 463
Na
me form at ...................................... .462
Options ................................................ 463
Saving as a favo urite .......................... .464
Selecting options for suggestions ........ 464
St oring ................................................ 463
Con venience closing ...............................1 00
Conv enience opening ................................ 99
Coolant (engine) Levelch eck ......................................... 536
No tes .................................................. 604
Cooling see Climate control
Co pyright ...................................................35
Cornering light ........................................ .160
Co ver
see Side windo ws
Cross Traf fic Alert .................................. .299
Crosswind Assist Function/no tes ................................... 234 Cruise control
.......................................... 241
Ac tivating ............................................ 24 3
Buttons ................................................ 24 3
Calling up a speed .............................. .243
Deactivating ........................................ 24 3
Fu nction ............................................... 241
Re quirements ...................................... 24 3
Selecting ............................................. 24 3
Setting a speed ................................... 24 3
St oring a speed ................................... 24 3
Sy stem limitations ...............................2 41
Cup holder ................................................ 14 8
Re ar .................................................... .135
Switching the cooling/heating func‐
tion on/off .......................................... 14 9
use (co ckpit) ........................................ 14 8 D
Damage de tection (pa rked vehicle) .......226
Dashboard see Cockpit
Dashboard lighting see Instrument lighting Index
687

Engaging pa
rkposition ........................ 207
Enga ging park position automatically .. 207
Engaging reve rsege ar ........................ .206
Fu nction .............................................. 205
Displ ay
Care .................................................... .547
Display (multimedia sy stem) .................. 357
Home screen ...................................... .354
Operating ............................................ 357
Setting acoustic operating feedback ... 358
Settings ............................................... 388
Display (on-board computer) Displa yson the multifunction display .. 324
Display content Displaying ............................................ 322
Display message ...................................... 611
Calling up (on-board co mputer) ............ 611
No tes ................................................... 611
Display messages ¯ - - - km/h .................................. .635
ç - - - km/h ................................... 634
È - - - km/h ................................... 635 #12
V battery See Owner's Man‐
ual ....................................................... 641
# 48 V battery See Owner's Man‐
ual ....................................................... 639
Ac tive Blind Spot Assi stinope rative .... 630
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual ................................................ 630
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ...... 623
Ac tive Brake Assi stFunctions limited
See Owner's Manual ............................ 624
Ac tive Dis tance Assi stavailable
again .................................................. .634
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual .........634
Ac tive Dis tance Assi stinope rative ...... 634
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........629 Ac
tive Lane Keeping Assist inopera‐
tive ...................................................... 629
bAc tive Light Sy stem inoperative .. 664
Ac tive Parking Assist and
PA RKTRONIC inoperati veSee Own‐
er's Manual .......................................... 631
Ac tive Steering Assist cur rently
una vailable See Owner's Manual .........627
Ac tive Steering Assist inoperative .......628
Ac tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual .........629
Ac tive Stop-and-Go Assist inopera‐
tive See Owner's Manual ..................... 629
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .664
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .664
¯ AdBlue sy stem fault Engine
st art not possible ................................ 647 Index
689