lock MERCEDES-BENZ B-CLASS HATCHBACK 2021 Manual PDF

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
Á
Key not detected (white dis-
play message) *T
hekey is cur rently unde tected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot for starting with theke y (/ page 170).
Á Key not detected (red dis-
play message) *T
hekey cann otbe de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you switch o. theve hicle:
R You can no longer start theve hicle.
R You cannot centrally lock theve hicle. #
Ensu rethat theke y is in theve hicle.
If th eke y de tection function has a malfunction due toa st rong radio signal source: #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Place theke y in the slot for starting the engine with theke y (/ page 170).
Á Key being initialised Please
wait *T
hevehicle is processing in order to teach in the new key. #
Wait until processing is comple te.418 418
Display message
s andwarning/indicator lamps

Hybr
Hybr
id syst
id syst em
em Displa
Displa
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es Possible causes/conseq
ossible causes/conseq uences and
uences and0050
0050Solutions
Solutions
u
Towing not permitted See
Owner's Manual *T
he drive system is malfunctioning. #
Have theve hicle transpo rted only using a transpor ter or trailer (/ page 366).
ò Acoustic presence indica-
tor inoperative *T
he sound generator (acoustic vehicle warning system) is malfunctioning. No driving noises are being produced. The
ve hicle may not be heard by otherroad users. #
Drive with particular care. #
Consult a quali/ed specialist workshop.
00E5
Charger cable connected *Y
ou cannot pull away while thech arging cable is connected. #
Disconnect thech arging cable from theve hicle.
Not possible to unlock
charging cable See Own-
er's Manual *T
hecharging cable connector cann otbe remo ved from thech arging station's soc ket. #
Press the EMERGENCY OFF switch on thech arging station.
If th ech arging cable connector cann otbe remo ved aTer that: 426 426
Displ
aymessages and warning/indicator lamps

V
V
ehicle
ehicle Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences and0050
0050Solutions
Solutions
0072
Vehicle is operational
Switch off ignition before
exiting *Y
ou are leaving theve hicle in a ready-to-drive state. #
Get out of theve hicle, secure it against rolling away and take theke y with you. #
Ifyo u do not lea vetheve hicle, switch o. the electrical consumers, e.g. the seat heating. Otherwise, the 12‑V bat-
te ry may dischar geand starting the engine may be possible only with the help of a second battery (jump start).
ï
Check trailer hitch
lock (white display message) *T
he trailer hitch is not operational during a jou rney with a trailer. &
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. #
Initiate a new swivel mo vement (/ page 274). #
When the display message disappears, couple up the trailer and drive on.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. 432
432
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions #
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.
*W hen theve hicle is stationary with a coupled trailer, the trailer hitch is not operational. #
Uncouple the coupled trailer and secure it against rolling away. #
If t If the ball nec he ball nec k has been f
k has been f olded in:
olded in:unlockthe ball neck (/ page 274). #
Swivel the ball neck into the end position manually and let it engage. #
If t
If the ball nec
he ball nec k has been f
k has been f olded out
olded out::unlock the ball neck (/ page 274). #
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. Displ
aymessages and warning/indicator lamps
433 433

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
Ù
Steering malfunction See
Owner's Manual *T
he elect ric steering lock is malfunctioning. The steering may be loc kedby the electric steering loc k. &
W WARNI NG
ARNI NGRisk of accident if steering capability is impai red
If th e steering does not function as intended, theve hicle's operating saf ety is jeopardised. #
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. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Consult a quali/ed specialist workshop.
û
Before starting the engine,
turn the steering wheel. *T
he elect ric steering lock could not unlock the steering. #
Switch o. theve hicle. #
Tounlock the steering, mo vethe steering wheel slightly tothe leT and right. #
Switch on theve hicle again.
Active bonnet malfunction
See Owner's Manual *T
he active bonn et(pedest rian pr otection) is malfunctioning or inoperative aTer having already been triggered. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
435 435

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions #
Close theta ilgate.
Anti-theft alarm system
Malfunction *T
he anti-theT alarm system is malfunctioning. #
Consult a quali/ed specialist workshop.
006F
2nd seat row, left Not
locked *T
he leT-hand seat or the seat backrest in the second row of seats is not engaged. #
Foldthe cor responding seat backrest back until it engages and push thero w of seats back . #
Make sure that the seat is engaged .
006F 2nd seat row, right Not
locked *T
heright-hand seat or the seat backrest in the second row of seats is not engaged. #
Foldthe cor responding seat backrest back until it engages and push thero w of seats back . #
Make sure that the seat is engaged .
00B2 Top up washer fluid *T
hewasher 0uid le vel in thewa sher 0uid reser voir has dropped below the minimum. #
Top up thewa sher 0uid (/ page 342).
Wiper malfunctioning *The windscreen wiper is malfunctioning. Displ
aymessages and warning/indicator lamps
437
437

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
0080
Trans. oil overheated Drive
on with care *T
he transmission is overheating. When the display message is active, start-up and driving characteristics may be tem-
porarily impaired. #
Drive at low engine speed. #
Avoid sporty driving. #
Before pulling away on uphill gradients, let the transmission cool down until the display message disappears.
Parking lock inoperative
Apply the parking brake *T
he transmission is malfunctioning. The park position 005Dcann otbe selected. #
Park theve hicle safel y. #
Use the electric parking brake tosecure theve hicle against rollingaway.
Teaching in transmission
Operate selector lever
Brake for XX seconds Risk
of vehicle rolling *T
he transmission is being taught in. There is a risk of theve hicle rolling away. #
Depress and hold the brake pedal until thete ach-in process has been comple ted.
The electric parking brake is applied automatically during thete ach-in process. #
Switch on theve hicle. #
Select park position 005D, transmission position 005Eor neutral 005C.
Risk of vehicle rolling away
Apply parking brake See
Owner's Manual *T
he transmission position cann otbe reliably identi/ed. #
Use the electric parking brake tosecure theve hicle against rollingaway.
Teaching in transmission
complete *T
he transmission's teach-in process is comple te. All transmission positions can be selected again. 444 444
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
Risk of vehicle rolling away
Parking brake not applied
See Owner's Manual *V
Vehicles wit ehicles wit h manual tr
h manual tr ansmission:
ansmission: the electric parking brake has not been applied and you open the driver's door. #
Apply the electric parking brake.
004D
Brake immediately *V
Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: a malfunction has occur red while the HOLD function was activated.
A horn may also sound at regular inter vals. If you attem pttolock theve hicle, the horn will become louder.
Yo u cannot start theve hicle system. #
Immediately depress the brake pedal /rmly until the display message disappears.
Yo u cannot start theve hicle system again.
004D Check brake fluid level *T
here is insu1cient brake 0uid in the brake 0uid reser voir. &
W
WARNING
ARNING Risk of an accident due tolow brake 0uid le vel
If th e brake 0uid le vel is too lo w,the braking e.ect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and tra1c conditions. Do not continue driving. #
Consult a quali/ed specialist workshop. #
Do not top up the brake 0uid. Check brake pads See
Owner's Manual
*T
he brakepads ha vereached thewe ar limit. #
Consult a quali/ed specialist workshop. 450 450
Displ
aymessages and warning/indicator lamps

Dr
Dr
iving safe
iving safe ty syst
ty systems
ems Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
0025
00E5
currently unavailable See
Owner's Manual *
ABS and ESP ®
are temp orarily una vailable.
Other driving systems and driving saf ety systems (e.g. BAS) may also be temp orarily una vailable.
The brake system will continue tooperate normall y.Braking distance may inc rease in an emer gency braking situation. &
W WARNI NG
ARNI NGRisk of skidding if ABS and ESP ®
are malfunctioning
The wheels may lock during braking and ESP ®
does not per form any vehicle stabilisation.
The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addi-
tion, other driving saf ety sy stems are swit ched o.. #
Drive carefully on a suitable str etch of road, making slight steering mo vements at a speed abo ve30 km/h. #
Ifth e display message does not disappear, consult a quali/ed specialist workshop immediatel y.Drive care-
full y. 462
462
Display message
s andwarning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences and0050
0050Solutions
Solutions
0025
00E5
inoperative See Owner's
Manual *
ABS and ESP ®
are malfunctioning.
Other driving systems and driving saf ety sy stems (e.g. BAS) ma y also be malfunctioning.
The brake sy stem will continue tooperate normall y.Braking distance may inc rease in an emer gency braking situation. &
W WARNI NG
ARNI NGRisk of skidding if ABS and ESP ®
are malfunctioning
The wheels may block during braking and ESP ®
does not per form any vehicle stabilization.
The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addi-
tion, other driving saf ety sy stems are swit ched o.. #
Drive on carefull y. #
Have ABS and ESP ®
ch ecked immediately at a quali/ed specialist workshop. 00E5
currently unavailable See
Owner's Manual *
ESP ®
is temp orarily una vailable.
Other driving systems and driving saf ety sy stems (e.g. BAS) ma y also be malfunctioning. &
W WARNING
ARNING Risk of skidding if ESP is malfunctioning ®
If ESP ®
is malfunctioning, ESP ®
cann otcar ryout vehicle stabilisation. In addition, other driving saf ety sy stems are
swit ched o.. #
Drive carefully on a suitable str etch of road, making slight steering mo vements at a speed abo ve30 km/h. Display message
s andwarning/indicator lamps
463
463