Display messages
Possible causes/consequences and
0050
0050Solutions 0049
(USA
only) 0024 (Canada
only)
Parking Brake See
Parking Brake See
Operator's Manual Operator's Manual The yellow
0024warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
X Switch the ignition off.
X Press the electric parking brake handle for at least ten seconds.
X Shift the transmission to position 005D.
X Consult a qualified specialist workshop. The yellow
0024warning lamp and the red 0049(USA only) or 0024
(Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
or X Release the electric parking brake automatically (Y page 130).
If the electric parking brake still cannot be released:
X Do not drive on.
X Consult a qualified specialist workshop. The red
0049(USA only) or 0024(Canada only) indicator lamp flashes
and the yellow 0024warning lamp lights up.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
To apply: X Switch off the ignition and turn it back on.
X Apply the electric parking brake manually.
If the red 0049(USA only) or 0024(Canada only) indicator lamp con-
tinues to flash:
X Do not drive on.
X Secure the vehicle against rolling away (Y page 282).
X Shift the transmission to position 005D.
X Turn the front wheels towards the curb.
X Consult a qualified specialist workshop. 178
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
0050
0050Solutions The yellow
0024warning lamp lights up. The red 0049(USA only)
or 0024 (Canada only) indicator lamp flashes for about ten seconds
after the electric parking brake has been applied or released. It then
goes out or remains lit.
The electric parking brake is malfunctioning.
X Switch off the ignition and turn it back on.
X Apply the electric parking brake.
If it is not possible to apply the electric parking brake:
X Shift the transmission to position 005D.
X Visit a qualified specialist workshop.
If it is not possible to release the electric parking brake manually:
X Release the electric parking brake automatically (Y page 130).
If the electric parking brake still cannot be released:
X Consult a qualified specialist workshop. The yellow
0024warning lamp lights up. If you manually apply or
release the electric parking brake, the red 0049(USA only) or 0024
(Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible to apply
the electric parking brake manually.
X Shift the transmission to position 005Das the electric parking brake is
not applied automatically.
X Visit a qualified specialist workshop.
If it is not possible to release the electric parking brake manually: X Release the electric parking brake automatically (Y page 130).0049
(USA
only) 0024 (Canada
only)
Parking Brake Inop‐ Parking Brake Inop‐
erative erative The yellow
0024warning lamp lights up. The red 0049(USA only)
or 0024 (Canada only) indicator lamp flashes for about ten seconds
after the electric parking brake has been applied or released. It then
goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-
voltage or undervoltage.
X Remove the cause for the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.
X Apply or release the electric parking brake.
If it remains impossible to apply or release the electric parking brake:
X Switch off the ignition and turn it back on.
X Apply or release the electric parking brake.
If the electric parking brake still cannot be released: X Consult a qualified specialist workshop.
If the electric parking brake still cannot be applied:
X Visit a qualified specialist workshop. Display
messages
179On-board computer and displays Z
Display messages
Possible causes/consequences and
0050
0050Solutions The yellow
0024warning lamp lights up and the red 0049(USA only)
or 0024 (Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X Shift the transmission to position 005D.
X Visit a qualified specialist workshop. 0027
(USA only)
004D (Canada only)
Check Brake Fluid
Check Brake Fluid
Level
Level There is not enough brake fluid in the brake fluid reservoir.
In addition, the
0027(USA only) or 004D(Canada only) warning lamp
lights up in the instrument cluster and a warning tone sounds.
G WARNING
The braking effect may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 127).
X Consult a qualified specialist workshop.
X Do not add brake fluid. This does not correct the malfunction. 0026
Check Check
Brake
Brake Pad
PadWear
Wear The brake pads/linings have reached their wear limit.
USA only: the red
0027brake system warning lamp also lights up while
the engine is running.
X Visit a qualified specialist workshop. 0053
Inoperative Inoperative One or more main features of the mbrace system are malfunctioning.
X Have the mbrace system checked immediately at a qualified spe-
cialist workshop. Mercedes Mercedes
me
me connect
connect
Services Limited
Services Limited
See Operator's Man‐ See Operator's Man‐
ual ual Service limited.
Malfunction of one or more main functions of the Mercedes me con-
nect system.
X Observe the notes on diagnostics connection (Y page 27).
X Visit a qualified specialist workshop. 180
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
0050
0050Solutions Radar
Radar
Sensors
Sensors Dirty
Dirty
See Operator's Man‐
See Operator's Man‐
ual ual At least one of the following driving systems or driving safety systems
is temporarily restricted or inoperative:
R Active Brake Assist
Possible causes are:
R the sensors in the radiator trim and/or in the bumpers are dirty
R the function of the driving system or driving safety system is
impaired due to heavy rain or snow
A warning tone also sounds.
When the causes stated above no longer apply, the display message
disappears. All driving systems or driving safety systems are operative
again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 127).
X Switch off the engine.
X Clean the sensors in the following locations (Y page 246):
R in the radiator trim
R in the front bumper
R in the rear bumper, particularly in the center of the rear bumper
X Restart the engine.
The display message disappears. 0075
SRS SRS
Malfunction
Malfunction Ser‐
Ser‐
vice Required
vice Required The restraint system is malfunctioning. The
0075warning lamp also
lights up in the instrument cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury or even fatal injury.
X Visit a qualified specialist workshop immediately.
For further information about the restraint system, see (Y page 40).0075
Front Left Malfunc‐ Front Left Malfunc‐
tion Service tion Service
Required Required
orFront
Front
Right Malfunction
Right Malfunction
Service Required Service Required The restraint system is malfunctioning at the front on the left or right.
The 0075 warning lamp also lights up in the instrument cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury or even fatal injury.
X Visit a qualified specialist workshop immediately. 182
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
0050
0050Solutions 0075
Left Side Curtain Left Side Curtain
Airbag Malfunction Airbag Malfunction
Service Required Service Required
or
Right Side Curtain
Right Side Curtain
Airbag Malfunction Airbag Malfunction
Service Required Service Required The left-hand or right-hand window curtain air bag is malfunctioning.
The 0075 warning lamp also lights up in the instrument cluster.
G WARNING
The left or right window curtain air bag may either be triggered unin-
tentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop immediately. Display
messages
183On-board computer and displays Z
Display messages
Possible causes/consequences and
0050
0050Solutions Front
Front
Passenger
Passenger Air‐
Air‐
bag Disabled See
bag Disabled See
Operator's Manual Operator's Manual The front passenger front air bag is deactivated during the journey,
although:
R an adult
or
R a person of the corresponding stature is on the front passenger seat
If additional forces are applied to the seat, the system may interpret
the occupant's weight as lower than it actually is.
G WARNING
The front passenger front air bag does not deploy during an accident.
There is an increased risk of injury.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 127).
X Switch the ignition off.
X Have the occupant on the front passenger seat get out of the vehi-
cle.
X Keep the seat unoccupied, close the front passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps must light up simulta-
neously for approximately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on,
OCS (Occupant Classification System) has disabled the front
passenger front air bag (Y page 48)
R the display messages Front Passenger Airbag Enabled Front Passenger Airbag Enabled
See Operator's Manual
See Operator's Manual orFront Passenger Airbag Dis‐
Front Passenger Airbag Dis‐
abled See Operator's Manual
abled See Operator's Manual must not appear in the multi-
function display
X Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X Make sure that the display messages do not appear in the multi-
function display.
If these conditions are fulfilled, the front passenger seat can be occu- pied again. Whether the PASSENGER AIR BAG OFF indicator lamp
remains lit or goes out depends on how OCS classifies the occupant.
If the conditions are not fulfilled, the system is not operating correctly.
X Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see
(Y page 48). 184
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
0050
0050Solutions Front
Front
Passenger
Passenger Air‐
Air‐
bag Enabled See
bag Enabled See
Operator's Manual Operator's Manual The front passenger front air bag and front passenger knee bag are
enabled during the journey, although:
R a child, a small adult or an object weighing less than the system's
weight threshold is located on the front passenger seat
or
R the front passenger seat is unoccupied
The system may detect objects or forces applying additional weight on
the seat.
G WARNING
The front passenger front air bag and the front passenger knee bag
may be deployed unintentionally.
There is an increased risk of injury. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 127).
X Switch the ignition off.
X Open the front passenger door.
X Remove the child and the child restraint system from the front
passenger seat.
X Make sure that there are no objects on the seat adding to the
weight.
The system might otherwise detect the additional weight and inter-
pret the seat occupant's weight as greater than it actually is.
X Keep the seat unoccupied, close the front passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps must light up simulta-
neously for approximately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on,
OCS has disabled the front passenger front air bag and front
passenger knee bag (Y page 48)
R the display messages Front Passenger Airbag Enabled
Front Passenger Airbag Enabled
See Operator's Manual See Operator's Manual orFront Passenger Airbag Dis‐
Front Passenger Airbag Dis‐
abled See Operator's Manual
abled See Operator's Manual must not appear in the multi-
function display
X Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X Make sure that the display messages do not appear in the multi-
function display.
If these conditions are fulfilled, the front passenger seat can be occu- pied again. Whether the PASSENGER AIR BAG OFF or ON indicator
lamp remains lit or goes out depends on how OCS classifies the occu-
pant. Display
messages
185On-board computer and displays Z
Display messages
Possible causes/consequences and
0050
0050Solutions If the conditions are not fulfilled, the system is not operating correctly.
X Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see
(Y page 48). Lights
Display messages
Possible causes/consequences and
0050
0050Solutions 0049
Check Check
Left
Left Low
LowBeam
Beam
(example) The corresponding bulb is faulty.
X Visit a qualified specialist workshop.
i LED light sources: the display message for the corresponding
lamp only appears when all the LEDs in the lamp have failed. 0049
Malfunction See Malfunction See
Operator’s Manual Operator’s Manual The exterior lighting is faulty.
X Visit a qualified specialist workshop. 0049
Automatic Headlamp Automatic Headlamp
Mode Inoperative Mode Inoperative The light sensor is defective.
X Visit a qualified specialist workshop. 0049
Switch Off Lights Switch Off Lights The lights are still switched on when you leave the vehicle. A warning
tone also sounds.
X Turn the light switch to the 0058or0058 position. Adaptive Highbeam
Adaptive Highbeam
Assist Inoperative Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Adaptive Highbeam Adaptive Highbeam
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Adaptive Highbeam Assist is deactivated and temporarily inoperative.
Possible causes are:
R the windshield in the camera's field of vision is dirty
R visibility is impaired due to heavy rain, snow or fog
X Clean the windshield.
If the system detects that the camera is fully operational, the Adap‐
Adap‐
tive
tive Highbeam
Highbeam Assist
AssistNow
NowAvailable
Available display message is shown.
Adaptive Highbeam Assist is operational again. 186
Display
messagesOn-board computer and displays