MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual

Display messages
Possible causes/consequences and P Solutions
% LED light sources: the display message for the corresponding light appears only when all the light-emitting diodes
in t
he light are faulty.
: Malfunction See Owner's
Manual * The exterior lighting is malfunctioning. 
Consult a q
ualiNed specialist workshop.
* Vehicles with a trailer hitch: a fuse ma
y have blown. 
Stop the vehicle in accordance with the tr
aPc conditions. 
Check the fuses and replace them if necessary (  pag
e 379).
:
Automatic driving lights
inoperative * The light sensor for automatic driving lights is malfunctioning. 
Consult a q
ualiNed specialist workshop.
:
Active Light System inoper-
ative * The active headlamps are malfunctioning. 
Consult a q
ualiNed specialist workshop.428
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
:
Switch on headlamps * You are driving without low-beam headlamps. 
Turn the light switch to the L or X position.
:
Switch off lights * You are leaving the vehicle and the lights are still switched on. 
Turn the light switch to the X position.
:
Intelligent Light System
inoperative * The Intelligent Light System is malfunctioning. The lighting system continues to function properly without the functions
of t he Intelligent Light System. 
Consult a q
ualiNed specialist workshop.
Adaptive Highbeam Assist
currently unavailable See
Owner's Manual * Adaptive Highbeam Assist is temporarily unavailable.
The sy
stem limits have been reached (  page 147).
Once the cause of the problem is no longer present, the system will be available again. The Adaptive Highbeam
Assist available again display message will appear. 
Drive on Display messages and warning/indicator lamps
429

Display messages
Possible causes/consequences and P Solutions 
Operate the high beam manually until Adaptive High Beam Assist is available again.
Adaptive Highbeam Assist
inoperative * Adaptive Highbeam Assist is malfunctioning. 
Drive on
or 
Stop the vehicle in accordance with the tr aPc conditions and restart the vehicle. 
If the display message does not disappear: consult a q ualiNed specialist workshop. 
Until then, operate the high beam manually.
Adaptive Highbeam Assist
Plus currently unavailable
See Owner's Manual * Adaptive Highbeam Assist Plus is temporarily unavailable.
The sy
stem limits have been reached (  page 148).
Once the cause of the problem is no longer present, the system will be available again. The Adaptive Highbeam
Assist Plus available again display message will appear. 
Drive on 
Operate the high beam manually until Adaptive High Beam Assist Plus is available again.
Adaptive Highbeam Assist
Plus inoperative * Adaptive Highbeam Assist Plus is malfunctioning. 
Drive on
or 
Stop the vehicle in accordance with the tr
aPc conditions and restart the vehicle. 
If the display message does not disappear: consult a q ualiNed specialist workshop. 430
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions 
Until then, operate the high beam manually.
Hazard warning lamps mal-
functioning * The hazard warning lamp switch is malfunctioning. 
Consult a qualiNed specialist workshop. Climate control
Display messages
Possible causes/consequences and P Solutions
;
inoperative See Owner's
Man. * The stationary heater is temporarily malfunctioning. 
When the vehicle is stationary on a level surface and the engine has cooled down, make up to four attempts to
switc

h on the stationary heater, waiting several minutes between each attempt. 
If the stationary heater does not switch on, consult a q
ualiNed specialist workshop.
;
inoperative Battery low * The on-board electrical system voltage is too low.
The s
tationary heater has switched itself oM. 
Drive an extended distance until the battery has reached a suPcient c
harge level again. Display messages and warning/indicator lamps
431

Display messages
Possible causes/consequences and P Solutions
;
inoperative Refuel vehicle * There is too little fuel in the fuel tank. The stationary heater cannot be switched on. 
Refuel the vehicle.
;
inoperative High-voltage
battery charging incom-
plete * The high-voltage battery is charging. Pre-entry climate control cannot be switched on. 
Wait until the charging process has achieved a minimum charge.
;
inoperative Charge HV bat-
tery * The charge of the high-voltage battery is too low. Pre-entry climate control cannot be switched on. 
Charge the high-voltage battery ( pag e 203).432
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
;
Pre-entry climate control
(via key) available again
after engine start * You have attempted to switch on pre-entry climate control more than twice with the vehicle switched
oM.
Start the vehicle for ten seconds.
Pr e-entry climate control is operational again.
; Pre-entry climate control
(via key) inoperative HV-
battery low * The charge of the high-voltage battery is too low. Pre-entry climate control cannot be switched on. 
Charge the high-voltage battery ( pag
e 203).
When the high-voltage battery is suPciently charged, pre-entry climate control will be operational again. Display messages and warning/indicator lamps
433

Hybrid system
Display messages
Possible causes/consequences and P Solutions
Z
Towing not permitted See
Owner's Manual * The drive system is malfunctioning. 
Have the vehicle transported only using a transporter or trailer ( pag e 374).

Display messages
Possible causes/consequences and P Solutions 
Request service personnel from the operator of the charging station via the emergency call button or the emer-
g ency numbers attached to the charging station.
Vehicle not currently being
charged Charging station
fault * A malfunction has occurred in the charging station or the RFID card is not recognised. 
Start the charging process at a diMer
ent charging station.
or 
Have the RFID card checked to ensure it is functioning.
Charging method currently
unavailable Please try
again or change charging
method * A temporary malfunction has occurred in the charging station. 
Wait until the malfunction has passed.
or 
Start the charging process at a diMer
ent charging station.
Charging fault Please
change charging method
See Owner's Manual * A temporary malfunction has occurred in the charging station. 
Wait until the malfunction has passed.
or 
Start the charging process at a diMer
ent charging station.
Only electric drive availa-
ble Power limited * The fuel tank is empty and the combustion engine is switched
oM. The output of y
our vehicle is limited because you
are driving in electric mode. Display messages and warning/indicator lamps
435

Display messages
Possible causes/consequences and P Solutions 
Refuel immediately.
Subseq
uently, there may be temporary restrictions in the availability of electric mode over a driving distance of
50 km.
If there is fuel in the vehicle, there is a fault with the combustion engine. 
Consult a q
ualiNed specialist workshop.
"Electric" drive program
currently unavailable * The charge level of the high-voltage battery is not
suPcient f
or the Electric drive program.
Charge the high-voltage battery ( page 203).
Reduced drive system per-
formance See Owner's
Manual * The drive system switches to emergency operation mode due to a malfunction. 
Drive on carefully. 
Consult a q
ualiNed specialist workshop.
Û
Battery overheated Stop,
everybody out! Outdoors if
possible * The high-voltage battery has overheated. There is a risk of
Nr
e.
Stop the vehicle immediately in accordance with the tr
aPc conditions. 
If possible, stop the vehicle in the open air and ensure that all vehicle occupants get out.
% Supporting vehicle functions may activate automatically, e.g. the air-recirculation mode as part of climate control. 
Do not continue driving. 
If smoke is present, leave the danger zone and call the Nr
e service immediately.
Consult a q
ualiNed specialist workshop even if there are no external signs of a Nre.436
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
Û
Malfunction * The drive system is malfunctioning. A warning tone will also sound. 
Consult a qualiNed specialist workshop.
* There is a serious malfunction if the display message and warning tone are repeated at short intervals. You must stop t
he vehicle immediately in accordance with the traPc conditions because the drive system is automatically deactiva-
ted. 
Stop the vehicle immediately in accordance with the tr
aPc conditions. 
Switch oM t
he vehicle and consult a qualiNed specialist workshop.
Û
Malfunction Visit workshop * The drive system is malfunctioning. 
Consult a q
ualiNed specialist workshop.
Without changing gear,
consult workshop * The drive system cannot be restarted due to a malfunction.
If t
he transmission position is changed using the DIRECT SELECT lever, the drive system will be switched oM in park
position j or neutral i. 
Consult a q
ualiNed specialist workshop and do not change the transmission position.
Without starting engine
again, consult workshop * It is not possible to restart the drive system due to a malfunction. 
Do not switch oM t
he drive system; drive on to the nearest qualiNed specialist workshop. Display messages and warning/indicator lamps
437