MERCEDES-BENZ B-CLASS HATCHBACK 2021 Owners Manual

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Restart theve hicle.
If th e display message still appears: #
Consult a quali/ed specialist workshop. Engine
Engine
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To switch off the engine,
press the Start/Stop but-
ton for at least 3 seconds
or 3 times. *Y
ou ha vepressed the start/s top button while theve hicle is in motion. #
Information about switching o. theve hicle while driving (/ page 169).
Cannot start engine See
Owner's Manual *T
hevehicle cann otbe star ted. #
Switch theve hicle o. and switch it back on #
Ifth e display message still appears, consult a quali/ed specialist workshop. 438 438
Displ
aymessages and warning/indicator lamps

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00BD
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N
N O OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 342). #
Have the engine cooling system checked at a quali/ed specialist workshop.
ÿ
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Wait until the engine has cooled down. Display messages and
warning/indicator lamps
439
439

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Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ *T
here is a malfunction in the engine cooling system. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
00D4
Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
003A Clean the fuel filter *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the fuel /lter is dirty or thewa ter in the fuel /lter needs tobe drained. #
Consult a quali/ed specialist workshop.
009E
Replace air cleaner *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the engine air /lter is dirty and must be replaced. #
Consult a quali/ed specialist workshop. 440
440
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Drive system Malfunction
Visit workshop *T
he drive system is malfunctioning. #
Consult a quali/ed specialist workshop.
Drive system Malfunction
Stop Switch engine off *T
he drive system is malfunctioning. #
Stop theve hicle immediately in accordance with the tra1c conditions and switch o. the engine. #
Consult a quali/ed specialist workshop. T T
r
ransmission
ansmission Displa
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Only select Park (P) when
vehicle is stationary *I
t is possible toselect the park position 005Donly if theve hicle is stationar y. #
Depress the brake pedal tostop. #
ShiT the transmission topark position 005Dwhen theve hicle is stationar y.
Apply brake to deselect
Park (P) position *Y
ou ha veattem pted toshiT the transmission out of park position 005Dand into ano ther transmission position. #
Depress the brake pedal. #
Select transmission position 005B,005Eor neutral 005C.
To shift out of P or N,
depress brake and start
engine *Y
ou ha veattem pted toshiT the transmission out of park position 005Dor neutral 005Cand into ano ther transmission posi-
tion. #
Depress the brake pedal. Display messages and
warning/indicator lamps
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441

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Start theve hicle. #
Change the transmission position.
Apply brake to select D or R *You ha veattem pted toselect transmission position 005Bor005E. #
Depress the brake pedal. #
Select transmission position 005Bor005E.
Apply brake to select R *You ha veattem pted toselect transmission position 005E. #
Depress the brake pedal. #
Select transmission position 005E.
Risk of vehicle rolling
Driver door open and trans-
mission not in P *T
he driver's door is not fully closed and transmission position 005B,005Eor neutral 005Cis selected.
The vehicle may rollawa y. #
Select pa rkposition 005Dwhen switching o. theve hicle.
N permanently active Risk
of vehicle rolling *W
hiletheve hicle is rolling or while you are driving, neutral 005Chas been engaged. #
Depress the brake pedal tostop. #
ShiT the transmission topark position 005Dwhen theve hicle is stationar y. #
Tocontinue driving, select transmission position 005Bor005E.
Without changing gear,
consult workshop *T
he transmission is malfunctioning. It is no lon ger possible tochange the transmission position. 442 442
Display messages and
warning/indicator lamps

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If transmission position 005Bis selected, consult a quali/ed specialist workshop and do not change the transmission
position. #
For all other transmission positions, park theve hicle safel y. #
Consult a quali/ed specialist workshop.
Reversing not poss. Con-
sult workshop *T
he transmission is malfunctioning. It is not possible toselect transmission position 005E. #
Consult a quali/ed specialist workshop.
Transmission Malfunction
Stop *T
he transmission is malfunctioning. The transmission shiTs toneutral 005Cautomaticall y. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Depress the brake pedal. #
Engage park position 005D. #
Consult a quali/ed specialist workshop.
Transmission Malfunction *The transmission is malfunctioning. The cause could be an overheated clutch or bloc kedge ars. #
Let the transmission cool down. #
Ifth e display message still appears following a restart, consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
443 443

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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

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Transmission Malfunction
Visit workshop *T
he transmission is malfunctioning.
Consult a quali/ed specialist workshop.
Depress clutch fully to
start engine *Y
ou ha veattem pted tostart theve hicle without depressing the clutch pedal. #
Depress the clutch pedal and then start theve hicle.
*T hevehicle has stalled while theve hicle was pulling away,e.g. because the clutch pedal wasre leased tooqu ickl y. #
Depress the clutch pedal again.
The vehicle will start automaticall y. #
Slowly re leasethe clutch pedal topull away.
Clutch overheated Avoid
pulling away until the warn-
ing goes out *T
he clut chis under considerable load and is overheating.
Av oid frequent pulling away and driving at walking pace over longer distances. #
Stop theve hicle, paying attention toroad and tra1c conditions and lea vetheve hicle running.
The clutch will cool more quickly when theve hicle is running.
or #
If possible, continue driving at a steady speed and remo veyour foot from the clutch pedal. Do not let the clutch
drag.
The clutch will cool while theve hicle is in motion.
When the clutch has cooled down, the display message will disappear.
Auxiliary battery malfunc-
tion (white display message) *T
he auxiliary battery forth e automatic transmission is no longer being charge d. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
445 445

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Until then, alw ays select park position 005Dmanually before you switch o. theve hicle. #
Before leaving theve hicle, apply the electric parking brake.
Auxiliary battery malfunc-
tion (red display message) *V
Vehicles wit ehicles wit h manual tr
h manual tr ansmission:
ansmission: There is afault with the auxiliary batter y.
V
V ehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: The auxiliary battery forth e transmission is no longer being charge d. #
Consult a quali/ed specialist workshop. #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: untilthen, alw ays select park position 005Dbefore you switch o. theve hicle. #
Before leaving theve hicle, apply the electric parking brake. Br
Br
ak
ak es
es Displa
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0024
Parking brake See Owner's
Manual *T
heyellow 0024 indicator lamp is lit. The electric parking brake is malfunctioning.
T
T o apply o apply :
: #
Switch theve hicle o. and switch it back on #
App lythe electric parking brake manually (/ page 221).
If it is not possible toapply the electric parking brake: #
Consult a quali/ed specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away. 446
446
Display message
s andwarning/indicator lamps

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*T heyellow 0024 indicator lamp and there d0024 indicator lamp are lit. The electric parking brake is malfunctioning.
T
T o r
o r elease:
elease: #
Switch theve hicle o. and switch it back on #
Release the electric parking brake manually (/ page 221).
or #
Release the electric parking brake automatically (/ page 220).
If it is still not possible torelease the electric parking brake: #
Do not continue driving. Consult a quali/ed specialist workshop.
*T heyellow 0024 indicator lamp is lit and there d0024 indicator lamp is 0ashing. The electric parking brake is malfunc-
tioning.
The electric parking brake could not be applied or released. #
Switch theve hicle o. and switch it back on
T T o apply
o apply :
: #
Release and then apply the electric parking brake manually (/ page 221).
T
T o r
o r elease:
elease: #
Apply and then release the electric parking brake manuall y.
If it is not possible toapply the electric parking brake or there d0024 indicator lamp continues to0ash: Display messages and
warning/indicator lamps
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447