MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual

Display messages
Possible causes/consequences and P Solutions 
Check the conditions for automatic release of the electric parking brake. 
Release the electric parking brake manually.
$
Turn on the ignition to
release the parking brake * The red $ indicat
or lamp is lit.
You have attempted to release the electric parking brake with the vehicle switched oM.
Switch on the vehicle.
Risk of vehicle rolling away
Parking brake not applied
See Owner's Manual *
Vehicles with manual transmission: t
he electric parking brake has not been applied and you open the driver's door. 
Apply the electric parking brake.
M
Brake immediately *
Vehicles with manual transmission: a malfunction has occur
red while the HOLD function was activated.
A horn may also sound at regular intervals. If you attempt to lock the vehicle, the horn will become louder.
You cannot start the vehicle system. 
Immediately depress the brake pedal Nr
mly until the display message disappears.
You cannot start the vehicle system again. 458
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
M
Check brake fluid level * There is
insuPcient br ake Ouid in the brake Ouid reservoir. &
WARNING Risk of an accident due t
o low brake Ouid level
If the brake Ouid le
vel is too low, the braking eMect and the braking characteristics may be impaired. 
Stop the vehicle as soon as possible, paying attention to road and tr
aPc conditions. Do not continue driving. 
Consult a q
ualiNed specialist workshop. 
Do not top up the brake Ouid.Check brake pads See
Owner's Manual
* The brakepads have reached the wear limit. 
Consult a q
ualiNed specialist workshop. Driving systems
Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions
é
ATTENTION ASSIST inoper-
ative * ATTENTION ASSIST is malfunctioning. 
Consult a qualiNed specialist workshop.
é
ATTENTION ASSIST Take a
break! * ATTENTION ASSIST has detected fatigue or an increasing lack of concentration on the part of the driver
( pag
e 236). 
If necessary, take a break.
J
- - -
km/h * Cruise control cannot be activated as not all activation conditions are
fulNlled.
Observe the activation conditions for cruise control (  pag e 239).
Cruise control inoperative * Cruise control is malfunctioning. 
Consult a q
ualiNed specialist workshop.
Cruise control and Limiter
inoperative * Cruise control and the limiter are malfunctioning. 
Consult a q
ualiNed specialist workshop.460
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
Cruise control off * Cruise control has been deactivated.
If t here is an additional warning tone, cruise control has been deactivated automatically (  page 237).

Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions
Active Distance Assist
available again * Active Distance Assist DISTRONIC is operational again. 
Switch on Active Distance Assist DISTRONIC ( pag e 243).
Speed Limit Assist cur-
rently unavailable See Own-
er's Manual * Speed Limit Assist is temporarily unavailable. 
Drive on
Once t

he cause of the problem is no longer present, the system will be available again.
Speed Limit Assist inopera-
tive * Speed Limit 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.
ð Maximum speed exceeded * You have exceeded the maximum permissible speed (for certain countries only). 
Drive more slowly.
Speed limit (winter tyres)
XXX km/h * You have reached the maximum permissible stored speed for winter tyres. It is not possible to exceed this speed. Display messages and warning/indicator lamps
463

Display messages
Possible causes/consequences and P Solutions
Active Steering Assist cur-
rently unavailable See Own-
er's Manual * Active Steering Assist is temporarily unavailable.
The ambient conditions ar e outside the system limits (  page 247).
As soon as the ambient conditions are within the system limits, the system will become available again. 
Drive on 
Check the tyre pressure if necessary.
Active Steering Assist inop-
erative * Active Steering Assist is malfunctioning. Active Distance Assist DISTRONIC remains available. 
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.
Active Steering Assist cur-
rently unavailable due to
multiple emergency stops * Active Steering Assist is temporarily unavailable due to multiple emergency stops. 
Take over the steering and stop in accordance with the tr
aPc conditions.
Switch the vehicle oM and switc
h it back on
Active Steering Assist is available once more.
Beginning emergency stop * Your hands are not on the steering wheel. An emergency stop is being initiated (  pag
e 249).
Put your hands back on the steering wheel.
You can cancel the deceleration at any time by performing one of the following actions: = S

teering 464
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
= Br aking or accelerating
= Deactivating Active Distance Assist DISTRONIC
Ø * Active Steering Assist has reached the system limits ( pag

e 247).
You have not steered independently for a considerable period of time. 
Take over the steering and drive on in accordance with the tr
aPc conditions.
Traffic Sign Assist currently
unavailable See Owner's
Manual *
TraPc Sign Assis
t is temporarily unavailable.
Once the cause of the problem is no longer present, the system will be available again. 
It is possible to continue driving in compliance with the tr
aPc regulations.
Traffic Sign Assist inopera-
tive *
TraPc Sign Assis
t is malfunctioning. 
It is possible to continue driving in compliance with the tr
aPc regulations.
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.
Blind Spot Assist currently
unavailable See Owner's
Manual * Blind Spot Assist is temporarily unavailable.
The sy
stem limits have been reached (  page 258).
Once the cause of the problem is no longer present, the system will be available again. 
Drive on
or Display messages and warning/indicator lamps
465

Display messages
Possible causes/consequences and P Solutions 
If the display message does not disappear, stop the vehicle in accordance with the tr aPc conditions and restart
the vehicle.
Blind Spot Assist inopera-
tive * Blind Spot 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.
Blind Spot Assist not availa-
ble when towing a trailer
See Owner's Manual * When you establish the electrical connection to the trailer, Blind Spot Assist will be unavailable. 
Press the les-hand T
ouch Control and acknowledge the display message.
Active Blind Spot Assist
currently unavailable See
Owner's Manual * Active Blind Spot Assist is temporarily unavailable.
The sy
stem limits have been reached (  page 258).
Once the cause of the problem is no longer present, the system will be available again. 
Drive on
or 
If the display message does not disappear, stop the vehicle in accordance with the tr
aPc conditions and restart
the vehicle.
Active Blind Spot Assist
inoperative * Active Blind Spot Assist is malfunctioning.466
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions 
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.
Active Blind Spot Assist
not available when towing
a trailer See Owner's Man-
ual * When you establish the electrical connection to the trailer, Active Blind Spot Assist will be unavailable. 
Press the les-hand T
ouch Control and acknowledge the display message.
Active Lane Keeping Assist
currently unavailable See
Owner's Manual * Active Lane Keeping Assist is temporarily unavailable.
The ambient conditions ar
e outside the system limits (  page 260).
As soon as the ambient conditions are within the system limits, the system will become available again. 
Drive on
Active Lane Keeping Assist
inoperative * Active Lane Keeping 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. Display messages and warning/indicator lamps
467