2021 MERCEDES-BENZ GLB SUV trailer

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Swivel the ball neck beneath the bumper manually and let it engage.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. #
Do not couple up the trailer. Drive on without the trailer. No tethere duced ground clearance due tothe unloc ked
ball nec k. #
Consult a quali/ed specialist workshop.
Head-up display currently
unavailable See Owner's
Manual *T
he head-up displ ayistemp orarily una vailable. Possible causes:
R malfunctions in the po wer supply
R signal inter fere nce #
Stop in accordance with the tra1c conditions and switch theve hicle o. and on again. #
Ifth e display message still appears, consult a quali/ed specialist workshop.
Head-up display inoperative *The head-up displ ayhas an internal er ror. #
Consult a quali/ed specialist workshop.
Ù
Steering malfunction
Increased physical effort
See Owner's Manual *T
he po wer steering assistance is malfunctioning. &
W WARNING
ARNING Risk of an accident due toaltered steering characteristics
If th e po wer assistance of the steering fails partially or comple tely,yo u will need touse more forc eto stee r. #
If safe steering is possible, drive on carefull y. Display messages and
warning/indicator lamps
397
397

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Blind Spot Assist currently
unavailable See Owner's
Manual *B
lind Spot Assist is temp orarily una vailable.
The system limits ha vebeen reached (/ page 230).
Once the cause of the problem is no longer present, the system will be available again. #
Drive on
or #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra1c conditions and restart
th eve hicle.
Blind Spot Assist inopera-
tive *B
lind Spot Assist is malfunctioning. #
Drive on
or #
Stop theve hicle in accordance with the tra1c conditions and restart theve hicle. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop.
Blind Spot Assist not availa-
ble when towing a trailer
See Owner's Manual *W
hen you establish the electrical connection tothe trailer, Blind Spot Assist will be una vailable. #
Press the leT-hand Touch Control and ackno wledge the display message.
Active Blind Spot Assist
currently unavailable See
Owner's Manual *A
ctive Blind Spot Assist is temp orarily una vailable.
The system limits ha vebeen reached (/ page 230).
Once the cause of the problem is no longer present, the system will be available again. 420 420
Displ
aymessages and warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Drive on
or #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra1c conditions and restart
th eve hicle.
Active Blind Spot Assist
inoperative *A
ctive Blind Spot Assist is malfunctioning. #
Drive on
or #
Stop theve hicle in accordance with the tra1c conditions and restart theve hicle. #
Ifth e display message does not disappear: consult a quali/ed specialist workshop.
Active Blind Spot Assist
not available when towing
a trailer See Owner's Man-
ual *W
hen you establish the electrical connection tothe trailer, Active Blind Spot Assist will be una vailable. #
Press the leT-hand Touch Control and ackno wledge the display message.
Active Lane Keeping Assist
currently unavailable See
Owner's Manual *A
ctive Lane Keeping Assist is temp orarily una vailable.
The ambient conditions are outside the system limits (/ page 232).
As soon as the ambient conditions are within the system limits, the system will become available again. #
Drive on
Active Lane Keeping Assist
inoperative *A
ctive Lane Keeping Assist is malfunctioning. Display messages and
warning/indicator lamps
421
421

W
W
ar
ar ning and indicat
ning and indicat or lam
or lamps
ps Ov
Ov
er
ervie
vie w of indicat
w of indicat or and w
or and war
arning lam
ning lam ps
ps Some systems will per
form a self-test when the
ve hicle is switched on. Some indicator and warn-
ing lamps may brie0y light up or 0ash. This beha v-
iour is non-critical. These indicator and warning
lamps indicate a malfunction only if they light up
or 0as haTer theve hicle has been star ted or dur-
ing a journe y.
S
S t
tandar
andar d ins
d instr
trument displ ay
ument display W
W
idescr
idescr een coc
een coc kpit ins
kpit instrtrument display
ument display Depending on
the display setting, the positions of
th e indicator lamps on the inst rument display may
di.er from theex ample shown.
Indicat
Indicat or and w
or and w ar
arning lam
ning lam ps:
ps:
6 Restraint system (/ page 443)
ü Seat belt (/ page 443)
ï Trailer hitch (/ page 444)
Ù Powe r steering (/ page 444)
ÿ V
V ehicles wit
ehicles wit h a widescr
h a widescr een coc
een cockpit
kpit :
:
coolant temp erature (/ page 446)
; Engine diagnostics (/ page 446)%
V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: preglow
# Electricalfault (/ page 446)
æ Reser vefuel wi thfuel /ller 0ap loca-
tion indicator (/ page 446)
! Electric parking brake (red)
(/page 449)
! Electric parking brake (yellow)
(/page 449)
J Brakes (yellow) (/ page 449)
J Brakes (red) (/ page 449)
L Distancewarning (/ page 451)
Ó Active Brake Assist (/ page 451)
ê Active Brake Assist (/ page 451)
! ABS (/page 452)
÷ ESP®
(/ page 452)
å ESP®
OFF (/ page 452)
h Tyre pressure monitoring system
(/ page 454)
T Standing lights (/ page 142)
L Low beam (/ page 142)442 442
Displ
aymessages 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 #
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.
ï
Tr ailer tow hitch warning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational. &
W
WARNING
ARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivelling procedu reand do not re-couple the trailer until the display message disappears. #
Notethe messages on the instrument displa y. Display messages and
warning/indicator lamps
445
445

Det
Det
ecting inatt
ecting inatt entiv
entiveness
eness
see ATTENTION ASSIST
Diagnos
Diagnostics connection tics connection.................................. 35
Diesel
Diesel
Low outside temp eratures...................... 375
No tes..................................................... 375
Digit
Digit al Owner's Manual
al Owner's Manual.................................. 20
Dingh
Dingh yto
y to wing
wing
see Tow- bar system
Dipped beam
Dipped beam
Changing bulbs...................................... 153
DIRECT SELECT lev
DIRECT SELECT lev er
er
Engageing reve rsege ar.......................... 183
Engaging drive position.......................... 183
Engaging neutral.................................... 183
Engaging park position automaticall y...... 183
Fu nction................................................ 182
Selecting park position........................... 183
Displa
Displa y (car
y (care)
e)............................................... 325
Displa
Displa y (MBUX multimedia syst
y (MBUX multimedia syst em)
em)
Home sc reen......................................... 266
Operating.............................................. 267 Displa
Displa y (on-boar
y (on-boar d com
d com put
puter)
er)
Displa yson the inst rument displa y......... 262
Displa
Displa y in t
y in t he windscr
he windscr een
een
see Head-up display
Displa
Displa y message
y message
Calling up (on-board computer).............. 385
No tes..................................................... 385
Displa
Displa y messag
y messag es es
ç - - - km/h.................................... .415
È - - - km/h..................................... 414
h - - - km/h..................................... 414
_ 2nd seat row, leT Not loc ked......... 400
_ 2nd seat row, right Not loc ked...... 401
# 12 V battery See Owner's Man-
ual......................................................... 430
: Active Light System inoperative..... 392
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 439
¯ AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 438 ¯
AdBlue system fault Engine
start not possible................................... 439
¯ AdBlue system fault See Own-
er's Manual............................................ 438
5 Add 1 litre engine oil when next
re fuelling ............................................... 440
é ATTENTION ASSIST inoperati ve..... 413
é ATTENTION ASSIS T:Take a
break!.................................................... 413
: Automatic driving lights inoper-
ative...................................................... 391
û Before starting the engine, turn
th e steering wheel.................................. 399
Á Change key batteries .................... 389
J Check brake 0uid le vel.................. 412
ï Check trailer hitch lock (white
display message) .................................... 396
h Check tyre(s) ................................ 433
! Clean the fuel /lter....................... 404 Index
463 463

#
Stop vehicle Lea veengine run-
ning ....................................................... 432
# Stop vehicle See Owner's Man-
ual......................................................... 431
ç suspended .................................... 415
: Switch o. lights............................ 392
: Switch on headlamps .................... 392
á temp orarily una vailable Camera
view restric ted....................................... 423
¸ temp orarily una vailable Sensors
dirty....................................................... 422
Ú Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 437
+ Top up coolant See Owner ’s
Manual.................................................. 402
¥ Top up washer 0uid...................... .401
d Trans. oil overheated Drive on
with care................................................ 407
! Turn on the ignition torelease
th e parking brake ................................... 412 Ú
.................................................... 437
d Vehicle is operational Switch o.
ignition before exiting............................. 395
h Warning tyre defect....................... 434
h Wheel sensor(s) missing ................ 433
Ú XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 438
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 420
Ac tive Blind Spot Assist inoperative........ 421
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual................................................. .421
Ac tive bonnet malfunction See Own-
er's Manual............................................ 399
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........428
Ac tive Brake Assist Functions limi ted
See Owner's Manual.............................. 429 Ac
tive Distance Assist available again ..... 416
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 415
Ac tive Distance Assist inoperative.......... 416
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ............ 421
Ac tive Lane Keeping Assist inoperative... 421
Ac tive Steering Assist cur rently
una vailable due tomultiple emer-
ge ncy stops........................................... 418
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ............ 418
Ac tive Steering Assist inoperative...........4 18
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual ............ 393
Ad aptive Highbeam Assist inoperative ....3 93
Ad aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 393
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .394 Index
465 465

Anti-theT ala
rmsystem Malfunction .......4 00
Apply brake todeselect Park (P) posi-
tion....................................................... .405
Apply brake toselect D or R ...................405
Apply brake toselect R .......................... 405
Au xiliary battery malfunction (red dis-
play message) ....................................... .408
Au xiliary battery malfunction (white
displ aymessage) .................................... 408
Beginning emer gency stop..................... 419
Blind Spot Assist cur rently una vailable
See Owner's Manual.............................. 420
Blind Spot Assist inoperative.................. 420
Blind Spot Assist not available when
to wing a trailer See Owner's Manual ...... 420
Cann otstart engine See Owner's
Manual................................................. .402
Check brake pads See Owner's Man-
ual......................................................... 412 Check tyre pressures
then restart Run
Flat Indicator......................................... 436
Cruise control and Limiter inoperative.... 414
Cruise control inoperative...................... 414
Cruise control o....................................4 14
Device de tected at diagnostics con-
nection See Owner's Manual................. .430
Drive system Malfunction Stop Switch
engine o............................................... 404
Drive system Malfunction Visit work-
shop ...................................................... 404
Fr ont-passenger airbag disabled See
Owner's Manual .................................... .387
Fr ont-passenger airbag enabled See
Owner's Manual .................................... .387
Hazard warning lamps malfunctioning .... 394
Head-up display cur rently una vailable
See Owner's Manual.............................. 397
Head-up display inoperative ...................397
Limiter inoperative................................. 414 Limiter passive....................................... 414
N permanently active Risk of
vehicle
ro lling....................................................4 06
Only select Park (P) when vehicle is
stationary.............................................. 405
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 424
Pa rking lock inoperative Apply the
parking brake ........................................ .407
Place theke y in the mar ked space
See Owner's Manual.............................. 390
PRE-SAFE inoperative See Owner's
Manual.................................................. 388
Re duce speed........................................ 435
Re versing not poss. Consult workshop ... 406
Risk of vehicle rolling away Apply
parking brake See Owner's Manual ........ 408
Risk of vehicle rolling Driver door
open and transmission not in P .............. 406
Ru n Flat Indica tor inoperative.................4 36466 466
Index