2015 MERCEDES-BENZ E-Class SEDAN air condition

Display messages
Possible causes/consequences and
0050
0050Solutions X
Wait for a period of at least 60 seconds until the necessary sys-
tem checks have been completed.
X Make sure that the display messages do not appear in the mul-
tifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied 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 cor- rectly.
X Visit a qualified specialist workshop immediately.
Observe the additional information on OCS (Y page 52).Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Display messages
Possible causes/consequences and
0050 0050Solutions 0049
Check Left Corner‐ Check Left Corner‐
ing Light ing Light
orCheck
Check
Right Cornering
Right Cornering
Light Light The left or right-hand cornering light is defective.
X Visit a qualified specialist workshop. 0049
Check Left Low Check Left Low
Beam Beam
orCheck
Check
Right Low Beam
Right Low Beam The left or right-hand low-beam headlamp is defective.
X Visit a qualified specialist workshop. 0049
Check Rear Left Check Rear Left
Turn Signal Turn Signal
or
Check Rear Right
Check Rear Right
Turn Signal Turn Signal The rear left-hand or rear right-hand turn signal is defective.
X Visit a qualified specialist workshop. 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 135).
or
X Visit a qualified specialist workshop. Display
messages
261On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00AC
Coolant Too Hot Coolant Too Hot
Stop Vehicle Turn Stop Vehicle Turn
Engine Off Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 179).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). 003D
See See
Operator's
Operator's Man‐
Man‐
ual
ual The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
! Do not continue driving. The engine could otherwise overheat.
X Secure the vehicle against rolling away (Y page 179).
X Consult a qualified specialist workshop. Display
messages
265On-board computer and displays Z

Driving systems
Display messages
Possible causes/consequences and
0050
0050Solutions 00AD
Attention Assist: Attention Assist:
Take a Break! Take a Break! Based on certain criteria, ATTENTION ASSIST has detected fatigue
or a lack of concentration on the part of the driver. A warning tone also sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so you get enough rest. 00AD
Attention Assist Attention Assist
Inoperative Inoperative ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop. 00ABor
00B3
Vehicle Rising
Vehicle Rising Your vehicle is adjusting to the level you have selected.
00ABor
00B3
Vehicle Rising
Vehicle Rising
Please Wait Please Wait The vehicle level is too low when the vehicle is stationary. A warn-
ing tone also sounds.
X Do not pull away.
The vehicle level is set when the display message disappears. 00ABor
00B3
Stop Vehicle Vehi‐ Stop Vehicle Vehi‐
cle Too Low cle Too Low You have pulled away while the vehicle level is still too low.
AIRMATIC sets the vehicle to the selected level after a short
period.
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 179).
X Wait until the display message disappears before pulling away. AIRMATIC is defective. A warning tone also sounds.
X Do not drive at speeds above 50 mph (80 km/h).
X Make only slight steering movements. Otherwise, the front
fender or the tires could be damaged if the steering movement
is too large.
X Listen for scraping sounds.
X Pull over and stop the vehicle safely, paying attention to road
and traffic conditions, and select a higher vehicle level.
Depending on the malfunction, it may be possible to raise the
vehicle.
X Visit a qualified specialist workshop. 268
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 00ABor
00B3
Malfunction
Malfunction The AIRMATIC function is restricted. The vehicle's handling char-
acteristics may be affected.
X Do not drive at speeds above 50 mph (80 km/h).
X Visit a qualified specialist workshop. 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 200). 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 200). Lane Keeping Lane Keeping
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual
or
Active Lane Active Lane
Keeping
Keeping Assist
AssistCur‐
Cur‐
rently
rently Unavailable
Unavailable
See
See Operator's
Operator's Man‐
Man‐
ual
ual Lane Keeping Assist or Active 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 or Active 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 179).
X Clean the windshield. Lane Keeping Lane Keeping
Assist Inopera‐ Assist Inopera‐
tive tive
orActive
Active
Lane Keeping
Lane Keeping
Assist Inoperative Assist Inoperative Lane Keeping Assist or Active Lane Keeping Assist is defective.
X Visit a qualified specialist workshop. Display messages
269On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions Blind Spot Assist
Blind Spot Assist
Currently Unavail‐ Currently Unavail‐
able See Opera‐ able See Opera‐
tor's Manual tor's Manual
or
Active Blind Spot
Active Blind Spot
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Blind Spot Assist or Active Blind Spot Assist is temporarily inop-
erative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
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.
The yellow 0063indicator lamps also light up in the exterior mir-
rors.
When the causes stated above no longer apply, the display mes-
sage disappears.
Blind Spot Assist or Active Blind Spot 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 179).
X Restart the engine. Blind Spot Assist Blind Spot Assist
Inoperative Inoperative
or
Active Blind Spot
Active Blind Spot
Assist Inoperative Assist Inoperative Blind Spot Assist or Active Blind Spot Assist is defective.
The yellow
0063indicator lamps also light up in the exterior mir-
rors.
X Visit a qualified specialist workshop. Park Assist Can‐ Park Assist Can‐
celed celed The driver's door is open and the driver's seat belt has not been
fastened.
X Repeat the parking process with the seat belt fastened and the
driver's door closed. You have inadvertently touched the multifunction steering wheel
while steering intervention was active.
X While steering intervention is active, make sure that the multi-
function steering wheel is not touched unintentionally. The vehicle has started to skid and ESP
®
has intervened.
X Use Active Parking Assist again later (Y page 209).270
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions Park
Park
Assist
Assist Inoper‐
Inoper‐
ative
ative You have just carried out a large number of turning or parking
maneuvers.
Active Parking Assist will become available again after approx-
imately ten minutes (Y
page 209).
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Switch off and restart the engine.
If the display message continues to be displayed: X Visit a qualified specialist workshop. PARKTRONIC is defective.
X Visit a qualified specialist workshop. Park Assist Fin‐ Park Assist Fin‐
ished ished The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
DISTRONIC PLUS Off DISTRONIC PLUS Off DISTRONIC PLUS has been deactivated (Y
page 189).
If it was not deactivated by the driver, a warning tone also sounds. DISTRONIC
DISTRONIC
PLUS
PLUSNow
Now
Available
Available DISTRONIC PLUS is operational again after having been tempo-
rarily unavailable. You can now reactivate DISTRONIC PLUS
(Y
page 189). DISTRONIC DISTRONIC
PLUS
PLUSCur‐
Cur‐
rently
rently Unavailable
Unavailable
See
See Operator's
Operator's Man‐
Man‐
ual
ual DISTRONIC PLUS is temporarily inoperative.
Steering Assist and Stop&Go Pilot are temporarily inoperative.
Possible causes are:
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 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 mes-
sage disappears.
DISTRONIC PLUS 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 179).
X Restart the engine. Display
messages
271On-board computer and displays Z

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 with Cross-Traffic Assist
R PRE-SAFE ®
Brake
R Steering Assist and Stop&Go Pilot
A warning tone also sounds.
X Visit a qualified specialist workshop. DISTRONIC DISTRONIC
PLUS
PLUSSus‐
Sus‐
pended
pended 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 189). DTR+: Steering
DTR+: Steering
Assist. Currently Assist. Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Steering Assist and Stop&Go Pilot are 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.
Steering Assist and Stop&Go Pilot 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 179).
X Clean the windshield. DTR+: Steering DTR+: Steering
Assist. Inopera‐ Assist. Inopera‐
tive tive Steering Assist and Stop&Go Pilot are faulty.
However, the DISTRONIC PLUS functions are still available.
A warning tone also sounds.
X Visit a qualified specialist workshop. 272
Display
messagesOn-board computer and displays

Tires
Display messages
Possible causes/consequences and
0050
0050Solutions Correct
Correct
Tire Pressure Tire 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 369).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor (Y page 371).Check
Check
Tire(s)
Tire(s) 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 fol-
lowing 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 179).
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 345).
X Check the tire pressure (Y page 369).
X If necessary, correct the tire pressure. 274
Display
messagesOn-board computer and displays