2014 MERCEDES-BENZ S-Class brake
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Display messages Possible causes/consequences and
0050
0050Solutions 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 Turn On the
Ignition to Ignition to
Release the Release the
Parking Brake Parking Brake The red
0049(USA only)/ 0024(Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the
ignition was switched off.
X Switch on the ignition. 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 ( Ypage 190).
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
malfunctioning.
X
Have the mbrace system checked immediately at a qualified
specialist workshop. PRE-SAFE PRE-SAFE
Inoperative See Inoperative See
Operator's Manual Operator's Manual
Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. air bags, remain available.
X Visit a qualified specialist workshop immediately. 272
Display
messagesOn-board computer and displays
Page 275 of 434
Display messages Possible causes/consequences and
0050
0050Solutions PRE-SAFE
PRE-SAFE
Functions
Functions
Currently Limited
Currently Limited
See Operator's See Operator's
Manual Manual PRE-SAFE
®
PLUS, PRE-SAFE ®
Brake or Adaptive Brake Assist of
COLLISION PREVENTION ASSIST is temporarily inoperative.
Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiator grill and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
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
message disappears.
PRE-SAFE ®
PLUS, PRE-SAFE ®
Brake or Adaptive Brake Assist of
COLLISION PREVENTION ASSIST 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 ( Ypage 190).
X Clean the sensors in the following locations ( Ypage 358):
R in the radiator trim
R in the front bumper
R in the rear bumper, particularly in the middle of the rear
bumper
X Restart the engine. PRE-SAFE PRE-SAFE
Functions
Functions
Limited See
Limited See
Operator's Manual Operator's Manual PRE-SAFE
®
PLUS, PRE-SAFE ®
Brake or Adaptive Brake Assist of
COLLISION PREVENTION ASSIST is not available due to a
malfunction. BAS PLUS or the distance warning signal may also
have failed.
X Visit a qualified specialist workshop. Display
messages
273On-board computer and displays Z
Page 276 of 434
Display messages Possible causes/consequences and
0050
0050Solutions Radar Sensors
Radar Sensors
Dirty See Dirty See
Operator's Manual Operator's Manual At least one of the following driving systems or driving safety
systems is temporarily inoperative:
R
PRE-SAFE ®
PLUS
R PRE-SAFE ®
Brake
R COLLISION PREVENTION ASSIST
R Active Lane Keeping Assist
R Active Blind Spot Assist
R DISTRONIC PLUS
Possible causes are:
R the sensors in the radiator trim and/or in the bumpers are dirty.
R the function of the driving system and/or driving safety system
is impaired due to heavy rain or snow.
When the causes stated above no longer apply, the display
message disappears. All driving systems/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 ( Ypage 190).
X Switch off the engine.
X Clean the sensors in the following locations ( Ypage 358):
R in the radiator trim
R in the front bumper
R in the rear bumper, particularly in the middle of the rear
bumper
X Restart the engine.
The display message disappears. Check Left Rear Check Left Rear
Belt See Belt See
Operator's Manual Operator's Manual
or
Check Right Check Right
Rear Belt See
Rear Belt See
Operator's Manual Operator's Manual The seat belt buckle extender on the right or left of the rear
compartment is not in the predefined position. The belt strap may
be jammed in the belt tongue.
G WARNING
If the seat belt buckle extender is not in the predefined position,
the seat belt cannot provide the intended level of protection.
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 Release the jamming.
X Repeat the seat belt fastening procedure. 274
Display
messagesOn-board computer and displays
Page 283 of 434
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
Visit a qualified specialist workshop. 0049
Check Left Mirror Check Left Mirror
Turn Signal Turn Signal
or
Check
Check Right
Right Mirror
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 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
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 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
Visit a qualified specialist workshop. 0049
Check Left Tail Check Left Tail
Lamp Lamp
orCheck
Check
Right Tail Lamp
Right Tail Lamp The left or right-hand tail lamp is defective.
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
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. Display
messages
281On-board computer and displays Z
Page 295 of 434
Display messages Possible causes/consequences and
0050
0050Solutions DISTRONIC PLUS
DISTRONIC PLUS
Inoperative Inoperative DISTRONIC PLUS is defective.
The following may have also failed:
R
BAS PLUS
R PRE-SAFE ®
Brake
R DISTRONIC PLUS Steering Assist
A warning tone also sounds.
X Visit a qualified specialist workshop. DISTRONIC PLUS DISTRONIC PLUS
Suspended Suspended 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 201). DTR+: Steering DTR+: Steering
Assist. Currently Assist. Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual DISTRONIC PLUS Steering Assist is 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
message disappears.
DISTRONIC PLUS Steering 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 ( Ypage 190).
X Clean the windshield. DTR+: Steering DTR+: Steering
Assist. Assist.
Inoperative Inoperative DISTRONIC PLUS Steering Assist is faulty.
However, the DISTRONIC PLUS functions are still available.
A warning tone also sounds.
X
Visit a qualified specialist workshop. Display
messages
293On-board computer and displays Z
Page 298 of 434
Display messages Possible causes/consequences and
0050
0050Solutions Check Tires
Check Tires The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
G WARNING
With tire pressures which are too low, there is a risk of the
following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Ypage 190).
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 365).
X Check the tire pressure (Y page 391).
X If necessary, correct the tire pressure. Warning Tire Warning Tire
Malfunction Malfunction The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
G WARNING
If you drive with a flat tire, there is a risk of the following hazards:
R a flat tire affects the ability to steer or brake the vehicle.
R You could lose control of the vehicle.
R continued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Ypage 190).
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 365). 296
Display
messagesOn-board computer and displays
Page 299 of 434
Display messages Possible causes/consequences and
0050
0050Solutions Tire Press.
Tire Press.
Monitor Currently Monitor Currently
Unavailable Unavailable Due to a source of radio interference, no signals can be received
from the wheel sensors. The tire pressure monitor is temporarily
malfunctioning.
X
Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been solved. TirePress. TirePress.
Sensor(s) Missing Sensor(s) Missing There is no signal from the tire pressure sensor of one or several
wheels. The pressure of the affected tire is not displayed in the
multifunction display.
X
Have the faulty tire pressure sensor replaced at a qualified
specialist workshop. Tire Pressure Tire Pressure
Monitor Monitor
Inoperative No Inoperative No
Wheel Sensors Wheel Sensors The wheels mounted do not have a suitable tire pressure sensor.
The tire pressure monitor is deactivated.
X
Mount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes. Tire Press. Tire Press.
Monitor Monitor
Inoperative Inoperative The tire pressure monitor is faulty.
X
Visit a qualified specialist workshop. Vehicle
Display messages Possible causes/consequences and
0050 0050Solutions Shift to 'P' or
Shift to 'P' or
'N' 'N'
to
toStart
Start Engine
Engine You have attempted to start the engine with the transmission in
position
Ror D.
X Shift the transmission to position Por N. Auxiliary Battery Auxiliary Battery
Malfunction Malfunction The auxiliary battery for the transmission is no longer being
charged.
X
Visit a qualified specialist workshop. Apply Brake to Apply Brake to
Shift from 'P' Shift from 'P' You have attempted to move the transmission selector lever to
position
D,Ror Nwithout depressing the brake pedal.
X Depress the brake pedal. Display
messages
297On-board computer and displays Z
Page 305 of 434
Safety systems
Warning/
indicator
lamp 0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 0027004D
0051
0027 (USA only), 004D(Canada only): the red brake system warning lamp
is lit while the engine is running. A warning tone also sounds.
G WARNING
The brake boosting effect is malfunctioning and the braking characteristics
may be affected.
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 190).
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display. 0027004D
0051
0027 (USA only), 004D(Canada only): the red brake system warning lamp
is lit while the engine is running. A warning tone also sounds.
There is not enough brake fluid in the brake fluid reservoir.
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 190).
X Do not add brake fluid. Adding more will not remedy the malfunction.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display. Warning and indicator lamps in the instrument cluster
303On-board computer and displays Z