2014 MERCEDES-BENZ CLA-Class brake
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Display messages
Possible causes/consequences and
0050
0050Solutions 0049(USA
only)0024
(Canada
only)
Please Release Please Release
Parking Brake Parking Brake The red
0049(USA only)/0024 (Canada only) indicator lamp
flashes and a warning tone sounds. A condition for automatic
release of the electric parking brake is not fulfilled (Y page 158).
You are driving with the electric parking brake applied.
X Release the electric parking brake manually. The red
0049(USA only)/0024 (Canada only) indicator lamp
flashes and a warning tone sounds.
You are using the electric parking brake for emergency braking
(Y page 158). 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 P.
X Consult a qualified specialist workshop. The yellow
0024warning lamp and the red 0049(USA only)/ 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 158).
If the electric parking brake still cannot be released: X Do not drive on.
X Consult a qualified specialist workshop. Display
messages
217On-board computer and displays Z
Page 220 of 358
Display messages
Possible causes/consequences and
0050
0050Solutions The red
0049(USA only)/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)/ 0024(Canada only) indicator lamp
continues to flash:
X Do not drive on.
X Secure the vehicle against rolling away (Y page 337).
X Shift the transmission to P.
X Turn the front wheels towards the curb.
X Consult a qualified specialist workshop. The yellow
0024warning lamp lights up. The red 0049(USA
only)/ 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 engage the electric parking brake:
X Shift the transmission to P.
X Visit a qualified specialist workshop.
If it is not possible to release the electric parking brake:
X Release the electric parking brake automatically (Y page 158).
If the electric parking brake still cannot be released: X Consult a qualified specialist workshop. 218
Display
messagesOn-board computer and displays
Page 221 of 358
Display messages
Possible causes/consequences and
0050
0050Solutions The yellow
0024warning lamp lights up. If you manually apply or
release the electric parking brake, the red 0049(USA only)/ 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 P.
X Visit a qualified specialist workshop. 0049(USA
only)0024
(Canada
only)
Parking Parking Brake
BrakeInop‐
Inop‐
erative
erative The yellow
0024warning lamp lights up. The red 0049(USA
only)/ 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 Engage 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 Engage or release the electric parking brake.
If the electric parking brake still cannot be released: X Consult a qualified specialist workshop. The yellow
0024warning lamp lights up and the red 0049(USA
only)/ 0024(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X Shift the transmission to P.
X Visit a qualified specialist workshop. 0049(USA
only)0024
(Canada
only)
Turn On the Igni‐ Turn On the Igni‐
tion to Release tion to Release
the Parking Brake the Parking Brake The red
0049(USA only)/0024 (Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the igni-
tion was switched off.
X Turn the SmartKey to position 1in the ignition lock. Display
messages
219On-board computer and displays Z
Page 222 of 358
Display messages
Possible causes/consequences and
0050
0050Solutions 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)/ 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 157).
X Consult a qualified specialist workshop.
X Do not add brake fluid. This does not correct the malfunction. 0026
Check Brake Pad Check Brake Pad
Wear Wear The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop. 0053
Inoperative Inoperative One or more main features of the mbrace system are malfunc-
tioning.
X Have the mbrace system checked immediately at a qualified
specialist workshop. 220
Display
messagesOn-board computer and displays
Page 224 of 358
Display messages
Possible causes/consequences and
0050
0050Solutions PRE-SAFE
PRE-SAFE
Functions Cur‐ Functions Cur‐
rently rently
Limited
Limited See
See
Operator's Manual
Operator's Manual Adaptive Brake Assist is temporarily inoperative. Possible causes
are:
R the front bumper is dirty.
R function is impaired due to heavy rain or snow.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R AMG vehicles: ESP ®
is deactivated.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
When the causes stated above no longer apply, the display mes-
sage disappears.
Adaptive Brake Assist is operational 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 157).
X Clean the front bumper (Y page 291).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 69). PRE-SAFE PRE-SAFE
Functions Limited Functions Limited
See See
Operator's
Operator's Man‐
Man‐
ual
ual Adaptive Brake Assist is faulty. The distance warning signal may
also have failed.
X Visit a qualified specialist workshop. 0075
SRS Malfunction SRS Malfunction
Service Required Service Required There is a malfunction in the SRS (Supplemental Restraint Sys-
tem). The
0075warning lamp also lights up in the instrument clus-
ter.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig- gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
Further information on occupant safety (Y page 40).222
Display
messagesOn-board computer and displays
Page 229 of 358
Display messages
Possible causes/consequences and
0050
0050Solutions 0049
Check Front Left Check Front Left
Turn Signal Turn Signal
or
Check Front Right
Check Front Right
Turn Signal Turn Signal The front left-hand or front right-hand turn signal is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. 0049
Check Left Mirror Check Left Mirror
Turn Signal Turn Signal
or
Check
Check Right
RightMirror
Mirror
Turn Signal
Turn Signal The turn signal in the left-hand or right-hand exterior mirror is
defective.
X Visit a qualified specialist workshop. 0049
Check Check
Center
Center Brake
Brake
Lamp
Lamp The high-mounted brake lamp is faulty.
X
Visit a qualified specialist workshop. 0049
Check Left Brake Check Left Brake
Lamp Lamp
orCheck
Check
Right Brake Lamp
Right Brake Lamp The left or right-hand brake lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. 0049
Check Left Tail Check Left Tail
and Brake Lamps and Brake Lamps
or
Check Right Tail
Check Right Tail
and Brake Lamps and Brake Lamps The left or right-hand tail lamp/brake lamp is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. 0049
Check Left High Check Left High
Beam Beam
orCheck
Check
Right High Beam
Right High Beam The left or right-hand high beam is defective.
X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or
X Visit a qualified specialist workshop. 0049
License Plate Lamp License Plate Lamp The left or right-hand license plate lamp is defective.
X Visit a qualified specialist workshop. 0049
Check Left Fog Check Left Fog
Lamp Lamp
orCheck
Check
Right Fog Lamp
Right Fog Lamp The left-hand or right-hand front fog lamp is defective.
X Visit a qualified specialist workshop. Display
messages
227On-board computer and displays Z
Page 235 of 358
Display messages
Possible causes/consequences and
0050
0050Solutions 00D9
Off Off The HOLD function is deactivated. the vehicle is skidding.
A warning tone also sounds.
X Reactivate the HOLD function later (Y page 176). The HOLD function is deactivated. When the brake pedal is firmly
depressed, an activation condition is not fulfilled.
A warning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 176). Radar Radar
Sensors
Sensors Deac‐
Deac‐
tivated See Opera‐
tivated See Opera‐
tor's Manual tor's Manual The radar sensor system is deactivated.
X Switch on the radar sensor system (Y page 209).Lane Keeping
Lane Keeping
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Lane Keeping 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.
R there are no lane markings for a longer period.
R the lane markings are worn, dark or covered, e.g. by dirt or snow.
When the causes stated above no longer apply, the display mes-
sage disappears.
Lane Keeping Assist is operational 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 157).
X Clean the windshield. Lane Keeping Lane Keeping
Assist Inoperative Assist Inoperative Lane Keeping Assist is faulty.
X Visit a qualified specialist workshop. Display
messages
233On-board computer and displays Z
Page 238 of 358
Display messages
Possible causes/consequences and
0050
0050Solutions DISTRONIC PLUS
DISTRONIC PLUS
Inoperative Inoperative DISTRONIC PLUS is defective. Adaptive Brake Assist may also
have failed.
A warning tone also sounds.
X Visit a qualified specialist workshop. DISTRONIC PLUS DISTRONIC PLUS
Inactive Inactive You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
X Remove your foot from the accelerator pedal. DISTRONIC PLUS
DISTRONIC PLUS
- - - mph - - - mph An activation condition for DISTRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS
(Y page 170). Cruise Control
Cruise Control
Inoperative Inoperative Cruise control is defective.
A warning tone also sounds.
X Visit a qualified specialist workshop. Cruise Control Cruise Control
- - - mph - - - mph A condition for activating cruise control has not been fulfilled.
You have tried to store a speed below 20 mph
(30 km/h), for
example.
X If conditions permit, drive faster than 20 mph (30 km/ h)and
store the speed.
X Check the activation conditions for cruise control (Y page 166).236
Display messagesOn-board computer and displays