Display messages
Possible causes/consequences and
0050
0050Solutions Active Parking Assist is unavailable or faulty.
X Switch off the ignition and restart the engine.
If Active Parking Assist continues to be unavailable (the 005Dsymbol
does not appear on the multifunction display):
X Visit a qualified specialist workshop. Active Parking
Active Parking
Assist Finished Assist Finished The vehicle is parked. A warning tone also sounds.
The display message disappears automatically. Active Distance
Active Distance
Assist Off Assist Off Active Distance Assist DISTRONIC was deactivated.
If a warning tone also sounds, the Active Distance Assist DISTRONIC
has deactivated automatically (Y page 171).Active Distance Active Distance
Assist Assist
Now
NowAvailable
Available Active Distance Assist DISTRONIC is operational again after having
been temporarily unavailable. You can now reactivate Active Distance
Assist DISTRONIC (Y page 171).Active Distance Active Distance
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Active Distance Assist DISTRONIC is temporarily inoperative.
Active Steering Assist is also temporarily inoperative.
Possible causes are:
R the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic 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
A warning tone also sounds.
When the causes stated above no longer apply, the display message
disappears.
Active Distance Assist DISTRONIC 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 156).
X Restart the engine. Active Distance Active Distance
Assist Inoperative Assist Inoperative Active Distance Assist DISTRONIC is faulty.
The following may have also failed:
R Active Brake Assist
R Active Brake Assist with cross-traffic function
A warning tone also sounds.
X Visit a qualified specialist workshop. Act. Distance Act. Distance
Assist Suspended Assist Suspended You have depressed the accelerator pedal. Active Distance Assist
DISTRONIC is no longer controlling the speed of the vehicle.
X Remove your foot from the accelerator pedal. 266
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
0050
0050Solutions Act.
Act.
Distance
Distance Assist
Assist
- - - mph
- - - mph A condition for activating Active Distance Assist DISTRONIC has not
been met.
X Check the activation conditions for Active Distance Assist
DISTRONIC (Y page 171). Active Steering Active Steering
Assist Currently Assist Currently
Unavailable; see Unavailable; see
Operator's Manual Operator's Manual Active 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 have been no lane markings for an extended period
R the lane markings are worn away, dark or covered up, e.g. by dirt or
snow
When the causes stated above no longer apply, the display message
disappears.
Active 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 (Y page 156).
X Clean the windshield. Active Steering Active Steering
Assist Inoperative Assist Inoperative Active Steering Assist is faulty.
However, the Active Distance Assist DISTRONIC functions are still
available.
A warning tone also sounds.
X Visit a qualified specialist workshop. Cruise Cruise
Control
Control Inop‐
Inop‐
erative
erative Cruise control is malfunctioning.
X Visit a qualified specialist workshop. Cruise Control
Cruise Control
--- mph --- mph R
A condition for activating cruise control has not been met.
You have tried to store a speed below 20 mph (30 km/h), for exam-
ple.
R ESP ®
is deactivated The yellow ESP ®
OFF warning lamp is lit.
X If conditions permit, drive faster than 20 mph (30 km/h) and store
the speed.
or X Check the activation conditions for cruise control (Y page 169).
or
X Reactivate ESP ®
(Y page 71). Cruise Control Off Cruise Control Off Cruise control has been deactivated.
If a warning tone also sounds, cruise control has deactivated auto-
matically (Y page 169). Display
messages
267On-board computer and displays Z
Tires
Display messages
Possible causes/consequences and
0050
0050Solutions Check
Check
Tire
TirePressure
Pressure
Soon
Soon The tire pressure loss warning system has detected a significant loss
in pressure.
A warning tone also sounds.
Possible causes:
R you have changed the positions of the wheels and tires or installed
new wheels and tires.
R the tire pressure in one or more tires has dropped significantly
G WARNING
Tire pressures that are too low pose 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 (Y page 156).
X Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 335).
X Check the tire pressures and, if necessary, correct the tire pressure.
X Restart the tire pressure loss warning system when the tire pres-
sure is correct (Y page 358). Check Check
Tire
TirePressure
Pressure
Then Restart Run
Then Restart Run
Flat Indicator Flat Indicator The tire pressure loss warning system generated a display message
and has not been restarted since.
X Set the correct tire pressure in all four tires.
X Restart the tire pressure loss warning system (Y page 358).Run Flat Indicator Run Flat Indicator
Inoperative Inoperative The tire pressure loss warning system is faulty.
X Visit a qualified specialist workshop. Please
Please
Correct
Correct Tire
Tire
Pressure
Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X Check the tire pressures at the next opportunity (Y page 358).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor (Y page 361).268
Display
messagesOn-board computer and displays
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
Tire pressures that are too low pose 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 (Y page 156).
X Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 335).
X Check the tire pressure (Y page 358).
X If necessary, correct the tire pressure. Warning Tire Mal‐ Warning Tire Mal‐
function function The tire pressure in one or more tires has dropped suddenly. The wheel
position is shown in the multifunction display.
G WARNING
Driving with a flat tire poses 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 (Y page 156).
X Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 335). Tire Tire
Press.
Press. Monitor
Monitor
Currently Unavaila‐
Currently Unavaila‐
ble ble Because there is interference from a strong source of radio waves, no
signals from the tire pressure sensors are detected. The tire pressure monitor is temporarily malfunctioning.
X Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been resolved. Tire Press. Sen‐ Tire Press. Sen‐
sor(s) Missing sor(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 mul-
tifunction display.
X
Have the faulty tire pressure sensor replaced at a qualified special-
ist workshop. Display
messages
269On-board computer and displays Z
Display messages
Possible causes/consequences and
0050
0050Solutions 0066 The hood is open.
G WARNING
The open hood may block your view when the vehicle is in motion.
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.
X Secure the vehicle against rolling away (Y page 156).
X Close the hood. 0051 At least one door is open.
A warning tone also sounds.
X Close all the doors. 00CC
Power Steering Mal‐ Power Steering Mal‐
function See Opera‐ function See Opera‐
tor's Manual tor's Manual The power steering is malfunctioning.
A warning tone also sounds.
G WARNING
You will need to use more force to steer.
There is a risk of an accident.
X Check whether you are able to apply the extra force required.
If you are able to steer safely:
X Drive on carefully.
X Visit a qualified specialist workshop immediately.
If you are unable to steer safely:
X Do not drive on.
X Consult a qualified specialist workshop. Phone No Service Phone No Service Your vehicle is outside the network provider's transmitter/receiver
range.
X Wait until the mobile phone operational readiness symbol appears
in the multifunction display. 00B2
Check Washer Fluid Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped below
the minimum.
X Add washer fluid (Y page 325).Wiper Malfunction‐
Wiper Malfunction‐
ing ing The windshield wipers are malfunctioning.
X Visit a qualified specialist workshop. Hazard Warning
Hazard Warning
Flashers Malfunc‐ Flashers Malfunc‐
tioning tioning The hazard warning lamps are faulty.
X Visit a qualified specialist workshop. 272
Display
messagesOn-board computer and displays
Warning/
indicator
lamp
0051
0051 Signal type
Possible causes/consequences and 0050 0050Solutions 0025
0051
The yellow ABS warning lamp is lit while the engine is running.
ABS is temporarily unavailable.
Other driving systems and driving safety systems may also malfunction.
In addition, the 00E5and00BB warning lamps may light up in the instrument
cluster.
ATTENTION ASSIST is deactivated.
Possible causes are:
R self-diagnosis is not yet complete
R the on-board voltage may be insufficient
G WARNING
The brake system continues to function normally, but without the functions listed above. The front and rear wheels could therefore lock if you brake hard, for exam-
ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is a risk of an accident.
X Carefully drive a suitable distance, making slight steering movements at a speed
above 12 mph (20 km/h).
The functions mentioned above are available again when the warning lamp goes
out.
If the warning lamp is still on: X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 278
Warning and indicator lamps in the instrument clusterOn-board computer and displays
Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00E500BB
0051
The yellow ESP ®
and ESP ®
OFF warning lamps are lit while the engine is running.
ESP ®
, BAS, Active Brake Assist, Active Brake Assist with cross-traffic function,
ESP ®
trailer stabilization, PRE‑SAFE ®
, PRE‑SAFE ®
PLUS, the HOLD function, hill
start assist, Crosswind Assist, STEER CONTROL, Active Lane Keeping Assist and
Active Blind Spot Assist are not available due to a malfunction.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance in an emergency braking situation can thus increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 00E500BB
0051
The yellow ESP ®
and ESP ®
OFF warning lamps are lit while the engine is running.
ESP ®
, BAS, Active Brake Assist, Active Brake Assist with cross-traffic function,
ESP ®
trailer stabilization, PRE‑SAFE ®
, PRE‑SAFE ®
PLUS, the HOLD function, hill
start assist, Crosswind Assist, STEER CONTROL, Active Lane Keeping Assist and
Active Blind Spot Assist are not available due to a malfunction.
ATTENTION ASSIST is deactivated.
Self-diagnosis is not yet complete
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance in an emergency braking situation can thus increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance, making slight steering movements at a speed
above 12 mph (20 km/h).
The functions mentioned above are available again when the warning lamp goes
out.
If the warning lamp is still on: X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. Warning and indicator lamps in the instrument cluster
281On-board computer and displays Z
Tires
Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 0077
0051
The yellow tire pressure monitor warning lamp (pressure loss/malfunction) is lit.
The tire pressure monitor has detected a loss of pressure in at least one of the tires.
G WARNING
Tire pressures that are too low pose 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 trac-
tion.
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 (Y page 156).
X Observe the additional display messages in the multifunction display.
X Check the tires and, if necessary, follow the instructions for a flat tire
(Y page 335).
X Check the tire pressure (Y page 358).
X If necessary, correct the tire pressure. 0077
0051
The yellow tire pressure monitor warning lamp (pressure loss/malfunction)
flashes for approximately one minute and then remains lit.
The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction display.
X Visit a qualified specialist workshop immediately. 286
Warning and indicator lamps in the instrument clusterOn-board computer and displays