MERCEDES-BENZ GLB SUV 2022 Manual Online


Always activate the installed child safety
loc
ks if children are travelling in the vehi-
cle. 
Never leave children unattended in the
v
ehicle. 
When leaving the vehicle, always take the
k
ey with you and lock the vehicle. Vehicles for the United Kingdom: observe the
im
portant safety notes in the "Notes on the addi-
tional door lock" section.
There are child safety locks for the rear doors and
the rear side windows.
The child safety lock on the rear doors secures
eac
h door separately. The doors can no longer be
opened from the inside. 
Press the lever in direction 1 (activ
ate) or 2
(deactivate). 
Make sure that the child safety locks are work-
ing pr
operly. Activating and deactivating the child safety lock
f
or the rear side windows 
To activate/deactivate: pr
ess button 2.
The rear side window can be opened or closed
in the following cases:
= indicator lamp 1 is lit: via the switch on
the driver's door 78
Occupant safety

=
indicat or lamp 1 is oM: via the switch on
the corresponding rear door or driver's
door Notes on pets in the vehicle
&
WARNING Risk of accident and injur
y due
to animals les unsecured or unattended in
the vehicle
If you leave animals in the vehicle unattended
or unsecur
ed, they could press buttons or
switches, for instance.
An animal may:
= activate vehicle equipment and become
trapped, for example
= switch systems on or oM and endanger
other road users
Unsecured animals may be thrown about the
vehicle in the event of an accident, or sudden
steering and braking manoeuvres, and injure
vehicle occupants. 
Never leave animals unattended in the
v

ehicle. 
Always correctly secure animals while
dr

iving, e.g. using a suitable animal car-
rier. Occupant safety
79

Key
Overview of key functions
&
WARNING Risk of accident and injur y due
to leaving children unattended in the vehi-
cle
If children are les unatt
ended in the vehicle,
they could, in particular:
= open doors, thereby endangering other
persons or road users.
= get out and be struck by oncoming traPc.
= operate vehicle equipment and become
trapped, for example.
In addition, the children could also set the
vehicle in motion by, for example:
= releasing the parking brake.
= changing the transmission position.
= starting the vehicle. 
Never leave children unattended in the
v
ehicle. 
When leaving the vehicle, always take the
k
ey with you and lock the vehicle. 
Keep the vehicle key out of the reach of
c
hildren. *
NOTE Damag
e to the key caused by mag-
netic Nelds 
Keep the key away from strong magnetic
Nelds. Vehicle key
1 To lock
2 Indicator lamp 3
Unlocks
4 Opens/closes the tailgate
% If indicator lamp 2 does no
t light up aser
pressing the Ü or ß button, the battery
is weak or possibly discharged. Replace the
battery as soon as possible.
Replace the key battery ( pag
e 82).
The key locks and unlocks the following compo-
nents:
= doors
= Fuel Nller Oap
= tailgate
If the vehicle is not opened within approximately
40 seconds aser unlocking, it locks again. Anti-
thes protection is primed again.
Do not keep the key together with electronic devi-
ces or metal objects. This can aMect the key's
functionality. 80
Opening and closing

Activating/deactivating the acoustic locking
v eriN-
cation signal Multimedia system:
4 © 5
Settings 5
Vehicle 
Activate or deactivate Acoustic lock.
% Please observe:
The select

ed setting for the acoustic locking
veriNcation signal must comply with the rele-
vant national road and traPc regulations. In
some countries, including Germany, using the
acoustic locking veriNcation signal is forbid-
den by traPc laws (in accordance with g16
Para. 1 and g30 Para. 1 of the German
national road traPc regulations). The driver of
the vehicle must comply with these regula-
tions. In countries where the use of this func-
tion is forbidden, this function is not activated
in the vehicle and must not be activated. Changing the unlocking settings
Possible unlocking functions of the key:
= Centr

al unlocking
= Unlocking the driver's door and fuel Nller Oap 
To switch between settings: pr
ess the Ü
and ß buttons simultaneously for approx-
imately six seconds until the indicator lamp
Oashes twice.
Options if the unlocking function for the driver's
door and fuel Nller Oap has been select

ed:
= To unlock the vehicle centrally: press the
Ü button twice.
= Vehicles with KEYLESS-GO: if you touch the
inner surface of the door handle on the driv-
er's door, only the driver's door and the fuel
Nller Oap are unlocked. Deactivating the function of the key
Vehicles with KEYLESS-GO:
if y
ou deactivate the
function of the key, the KEYLESS-GO functions are
also deactivated. Access or drive authorization by
KEYLESS-GO is then no longer possible with that
particular key. Activate the function of the key so
that all its functions will again be available.
You can also deactivate the function of the key to
reduce the energy consumption of the key if you do not use the vehicle or a key for an extended
per

iod of time. 
Deactivate: Pr
ess and hold the key button
ß. 
With the key button ß pr
essed, immedi-
ately press key button Ü twice in quick
succession.
The indicator light of the key lights up once
brieOy and once for a long time. 
To activate: pr
ess any button on the key.
% When the vehicle is started with the key in the
s
towage compartment of the centre console,
the function of the key is automatically activa-
ted ( page 169). Opening and closing
81

Removing/inserting the emergency key
Removing the emergency key

Press release button 1.
Emer gency key 2 is pushed out slightly. 
Pull out emergency key 2 until it eng
ages in
the intermediate position. 
Press release button 1 ag
ain and fully
remove emergency key 2.
Inserting the emergency key 
Press release button 1.
Insert emergency key 2 t
o the intermediate
position or fully until it engages. %
You can use the intermediate position of
emer

gency key 2 to attach the key to a key
ring. Replacing the key battery
&
DANGER Risk of f
atal injuries due to swal-
lowing batteries
Batteries contain toxic and corrosive substan-
ces. Sw
allowing batteries may cause severe
internal burns to occur within two hours.
There is a risk of fatal injury. 
Keep batteries out of the reach of chil-
dr

en. 
If the cap and/or the battery compart-
ment does no

t close securely, do not use
the key any longer and keep it out of the
reach of children. 
If batteries are swallowed, seek medical
att

ention immediately. +
ENVIRONMENTAL NOTE
En
vironmental
damage due to improper disposal of bat-
teries Batteries contain pollutants. It is
illeg

al to dispose of them with the household
rubbish. 
Dispose of batteries in an
en

vironmentally responsible manner.
Take discharged batteries to a qualiNed
specialist workshop or to a collection
point for used batteries. Requirements:
= Y

ou require a CR 2032 3 V cell battery.
Mercedes-Benz recommends that you have the
battery replaced at a qualiNed specialist work-
shop. 
Remove the emergency key (  pag
e 82).82
Opening and closing


Press release knob 2 do wn fully and slide
cover 1 in the direction of the arrow. 
Fold out cover 1 in t
he direction of the arrow
and remove. 
Remove battery compartment 3 and t
ake
out the discharged battery. 
Insert the new battery into battery compart-
ment 3. Obser

ve the positive pole marking in
the battery compartment and on the battery
when doing this. 
Push in battery compartment 3.
Re-attach cover 1 and push it until it
eng
ages. Problems with the key, troubleshooting
You can no longer lock or unlock the vehicle
P
ossible causes:
= The key battery is weak or discharged. 
Check the battery using the indicator lamp
( pag

e 80). 
Replace the key battery, if necessary
( pag
e 82). 
Use the replacement key. 
Use the emergency key to lock or unlock
( pag

e 86). 
Have the key checked at a q
ualiNed specialist
workshop.
There is interference from a powerful radio signal
sour
ce
Possible causes if the function of the key is
impaired:
= high voltage power lines
= mobile phones
= electronic devices (notebooks, tablets) =
shielding due t
o metal objects or induction
loops for electrical gate systems or automatic
barriers 
Make sure that there is suPcient dis
tance
between the key and the potential source of
interference.
You have lost a key 
Have the key deactivated at a q
ualiNed spe-
cialist workshop. 
If necessary, have the mechanical lock
r
eplaced as well. Doors
Notes on the additional door lock
The additional door lock is only available for vehi-
cles f
or the United Kingdom. Opening and closing
83

&
WARNING Risk of injur y to persons inside
the vehicle when the additional door lock
is activated
If the additional door lock is activated, the
door
s can no longer be opened from the
inside. 
Never leave persons, in particular chil-
dr

en, unattended in the vehicle. 
If there are persons in the vehicle, do not
activ
ate the additional door lock. The additional door lock is automatically activated
in t

he following situations:
= The vehicle is locked using the key.
= The vehicle is locked using KEYLESS-GO.
If the vehicle has been locked via Mercedes me
connect, the additional door lock is not activated
(  page 297).
If the additional door lock is activated, the doors
cannot be opened from the inside.
% Aser loc
king you can issue a signal with the
horn. You can prevent the additional door lock from
being activ
ated by deactivating interior protection
before locking the vehicle ( page 103). Unlocking/opening the doors from the inside

United Kingdom only: obser
ve the notes on
the additional door lock ( page 83). 
Pull door handle 1. Centrally locking and unlocking the vehicle from
t
he inside 
To unlock: pr
ess 1 button. 
To lock: pr
ess button 2.
The red indicator lamp on button 2 lights up
once the vehicle is locked.
This does not lock or unlock the fuel Nller Oap.84
Opening and closing

The vehicle is not unlocked:
= if y
ou have locked the vehicle using the key
= if you have locked the vehicle using KEYLESS-
GO Locking/unlocking the vehicle with KEYLESS-GO
Requirements:
= The k

ey is outside the vehicle.
= The distance between the key and the vehicle
does not exceed 1 m.
= The driver's door and the door on which the
door handle is used are closed.
* NOTE V
ehicle damage due to uninten-
tional opening of the tailgate =
when using an aut
omatic car wash
= when using a high pressure cleaner 
Deactivate the function of the key in
t

hese situations.
or 
Make sure that the key is at a minimum
dis

tance of 3 m away from the vehicle. Observe the notes:
= on w

ashing the vehicle in a car wash
(  page 324)
= on using a high pressure cleaner
( page 326) 
To unlock the vehicle: t
ouch the inner surface
of the door handle. 
To lock the vehicle: t
ouch sensor surface 1
or 2. 
Convenience closing: t
ouch recessed sensor
surface 2 until the closing process has been
completed.
% Further information on convenience closing
(  pag

e 96).
If you open the tailgate from outside, it is auto-
maticall
y unlocked. Problems with KEYLESS-GO, troubleshooting
You can no longer lock or unlock the vehicle using
KEYLESS-GO
P

ossible causes:
= The function of the key has been deactivated.
= The key battery is weak or discharged. 
Activate the function of the key ( pag
e 81). 
Check the battery using the indicator lamp
( pag

e 80). Opening and closing
85


Replace the key battery, if necessary
( pag e 82). 
Use the replacement key. 
Use the emergency key to lock or unlock
( pag

e 86). 
Have the vehicle and key checked at a quali-
Ned specialis

t workshop.
There is interference from a powerful radio signal
sour
ce
Possible causes if the function of KEYLESS-GO is
impaired:
= high voltage power lines
= mobile phones
= electronic devices (notebooks, tablets)
= shielding due to metal objects or induction
loops for electrical gate systems or automatic
barriers 
Make sure that there is suPcient dis
tance
between the key and the potential source of
interference. Activating/deactivating the automatic locking fea-
tur
e The vehicle is locked automatically when the vehi-
cle is switc

hed on and the wheels are turning
faster than walking pace. 
To activate: pr
ess and hold button 2 for
approximately Nve seconds until an acoustic
signal sounds. 
To deactivate: pr
ess and hold button 1 for
approximately Nve seconds until an acoustic
signal sounds.
The red indicator lamp on button 2 lights up
once t
he vehicle is locked.
In the following situations, there is a danger of
being locked out when the function is activated: = while the vehicle is being tow-started or
pushed
= if the vehicle is being tested on a roller dyna-
mometer Locking/unlocking the vehicle with the emer-
g

ency key Locking/unlocking the driver's door with the
emer

gency key
% If you wish to lock the vehicle entirely using
t
he emergency key, Nrst press the button for
locking from the inside while the driver's door
is open. Then proceed to lock the driver's
door using the emergency key. 86
Opening and closing


Remove the emergency key (  pag e 82).
Insert the emergency key as far as it will go
int
o opening 1 in the cover. 
Pull and hold the door handle. 
Pull the cover on the emergency key as
s

traight as possible away from the vehicle until
it releases. 
Release the door handle. 
To unlock: tur
n the emergency key anti-clock-
wise to position 1. 
To lock: tur
n the emergency key clockwise to
position 1. 
Carefully press the cover onto the lock cylin-
der until it eng

ages and is seated Nrmly.Locking the front passenger door and rear doors

Insert a suitable object, e.g. the emergency
k
ey, into opening 1 on the door lock. 
To lock the les-hand side of t
he vehicle: turn
the emergency key anti-clockwise as far as it
will go. Opening and closing
87