2015 MERCEDES-BENZ C-Class SEDAN lane assist

(Y
page 243) are shown in green. Active
Lane Keeping Assist is ready for use.
X To switch off: press button0044.
Indicator lamp 0043goes out. The Active
Lane Keeping Assist is deactivated. The
Lane Keeping Assist Off
Lane Keeping Assist Off message
appears in the multifunction display.
Selecting Standard or Adaptive setting X In the DriveAssist
DriveAssist menu on the on-board
computer, select the Active Lane Keep‐
Active Lane Keep‐
ing Assist
ing Assist function (Ypage 246).
X Select Standard
Standard orAdaptive
Adaptive.
When Standard
Standard is selected, no warning
vibration occurs if:
R you switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
R a driving safety system intervenes, such
as ABS, BAS or ESP ®
.
When Adaptive
Adaptive is selected, no warning
vibration occurs if:
R you switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
R a driving safety system intervenes, e.g.
ABS, BAS or ESP ®
.
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R you cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane marking, the system recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
R you approach the outer lane marking on a
bend.
R the road has very wide lanes, e.g. a high-
way.
R the system recognizes solid lane markings. The warning vibration occurs later if:
R the road has narrow lanes.
R you cut the corner on a bend. Driving systems
227Driving and parking Z

R
ATTENTION ASSIST (Y page 216)
R Lane Keeping Assist (Y page 219)or Active
Lane Keeping Assist (Y page 224)Maintenance menu
Introduction In the
Service
Service menu, you have the following
options:
R Calling up display messages in message
memory (Y page 250)
R Checking the tire pressure electronically
(Y page 367)
R Calling up the service due date
(Y page 329)
R Displaying the coolant temperature
(Y page 244)
Displaying the coolant temperature The coolant temperature is also shown in the
instrument cluster in the tachometer.
Observe the notes on coolant temperature
(Y page 231).
X Use 00E2 on the steering wheel to call up
the list of menus.
X Press the 0064or0063 button on the steer-
ing wheel to select the Service
Service menu.
X Confirm by pressing 0076on the steering
wheel. X
Use 0064 or0063 to select the Coolant Coolant
submenu.
X Press 0076to confirm your selection.
The coolant temperature is shown in a bar
display. Settings menu
Introduction In the
Settings Settings menu, you have the following
options:
R Changing assistance settings
(Y page 244)
R Changing head-up display settings
(Y page 246)
R Changing the light settings (Y page 247)
R Changing the instrument cluster settings
(Y page 248)
R Restoring the factory settings
(Y page 249)
Assistance submenu Deactivating/activating ESP
®
Observe the "Important safety notes" section in the description of ESP (Y page 72). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following. 244
Menus and submenusOn-board computer and displays

Activating/deactivating Blind Spot Assist
X Use 00E2 on the steering wheel to call up
the list of menus.
X Press the 0064or0063 button on the steer-
ing wheel to select the Settings
Settings menu.
X Confirm by pressing 0076on the steering
wheel.
X Use 0064 or0063 to select the Drive
Drive
Assist
Assist submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select
Blind Spot Assist
Blind Spot Assist .
X Press 0076to confirm.
The current selection is displayed.
X To activate/deactivate: press the0076
button again.
When Blind Spot Assist or Active Blind Spot Assist is activated, gray radar waves prop-
agating backwards appear next to the vehi-
cle in the Assistance Graphic
Assistance Graphic menu in
the multifunction display.
For further information about Blind Spot
Assist, see (Y page 217).
For further information about Active Blind
Spot Assist, see (Y page 221).
Setting ATTENTION ASSIST X Use 00E2 on the steering wheel to call up
the list of menus.
X Press the 0064or0063 button on the steer-
ing wheel to select the Settings
Settings menu.
X Confirm by pressing 0076on the steering
wheel.
X Use 0064 or0063 to select the Drive Drive
Assist
Assist submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select
Attention Assist
Attention Assist .
X Press 0076to confirm. X
Press the 0064or0063 button to set Off
Off ,
Standard
Standard orSensitive
Sensitive .
X Press the 0076button to confirm the selec-
tion.
When ATTENTION ASSIST is deactivated,
the 00D7 symbol appears in the Assis‐ Assis‐
tance Info Display
tance Info Display menu in the multi-
function display when the ignition is on.
For further information about ATTENTION
ASSIST, see (Y page 216).
Setting Lane Keeping Assist
X Use 00E2 on the steering wheel to call up
the list of menus.
X Press the 0064or0063 button on the steer-
ing wheel to select the Settings
Settings menu.
X Confirm by pressing 0076on the steering
wheel.
X Use 0064 or0063 to select the Drive Drive
Assist Assist submenu.
X Press 0076to confirm.
X Press 0064or0063 to select Lane Keep‐ Lane Keep‐
ing Assist
ing Assist .
X Press 0076to confirm.
The current selection Standard
StandardorAdap‐
Adap‐
tive
tive is displayed.
X To change the setting: press0076again.
For further information about Lane Keeping
Assist, see (Y page 219).
For further information about Active Lane
Keeping Assist, see (Y page 224).
Head-up display submenu Switching other displays on/off
This function is only available if the vehicle is
equipped with Navigation and/or Traffic Sign Assist.
In the on-board computer, you can select
which contents are shown on the windshield
when the head-up display is activated
(Y page 233). 246
Menus and submenusOn-board computer and displays

Safety systems
Display messages
Possible causes/consequences and
0050
0050Solutions 002500E5
Currently Unavail‐ Currently Unavail‐
able See Opera‐ able See Opera‐
tor's Manual tor's Manual ABS (Anti-lock Brake System), ESP
®
(Electronic Stability Program),
BAS (Brake Assist), PRE‑ SAFE®
, HOLD function, Crosswind Assist,
hill start assist, STEER CONTROL, Active Lane Keeping Assist and
Active Blind Spot Assist are temporarily unavailable.
BAS PLUS, PRE‑ SAFE®
Brake, PRE‑SAFE ®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the 00E5,00BBand0025 warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
For example, the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-ted. The braking distance in an emergency braking situation can
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
Carefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed: X Drive on carefully.
X Visit a qualified specialist workshop. 002500E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual ABS, ESP
®
, BAS, PRE‑SAFE ®
, HOLD function, Crosswind Assist,
hill start assist, STEER CONTROL, Active Lane Keeping Assist and Active Blind Spot Assist are unavailable due to a malfunction.
BAS PLUS, PRE‑SAFE ®
Brake, PRE‑SAFE ®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
The 0027 (USA only)/004D (Canada only),00E500BBand 0025
warning lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
G WARNING Display messages
251On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec- ted. The braking distance in an emergency braking situation can
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 00E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual ESP
®
, BAS, PRE ‑SAFE®
, HOLD function, Crosswind Assist, hill
start assist, STEER CONTROL, Active Lane Keeping Assist and
Active Blind Spot Assist are unavailable due to a malfunction.
BAS PLUS, PRE‑ SAFE®
Brake, PRE ‑SAFE®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the 00E5and00BB warning lamps light up in the
instrument cluster.
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 Drive on carefully.
X Visit a qualified specialist workshop. 252
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 00E5
Currently Unavail‐ Currently Unavail‐
able See Opera‐ able See Opera‐
tor's Manual tor's Manual ESP
®
, BAS, PRE ‑SAFE®
, HOLD function, Crosswind Assist, hill
start assist, STEER CONTROL, Active Lane Keeping Assist and
Active Blind Spot Assist are unavailable due to a malfunction.
BAS PLUS, PRE‑ SAFE®
Brake, PRE ‑SAFE®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the 00E5and00BB warning lamps light up in the
instrument cluster.
The self-diagnosis function might not be complete, for example.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
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 move-
ments at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. Display
messages
253On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 007A0025
00E5
Inoperative See Inoperative See
Operator's Manual Operator's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS,
PRE ‑SAFE ®
, HOLD function, Crosswind Assist, hill start assist,
STEER CONTROL, Active Lane Keeping Assist and Active Blind
Spot Assist are unavailable due to a malfunction.
BAS PLUS, PRE‑SAFE ®
Brake, PRE ‑SAFE®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the 00E5,00BBand0025 warning lamps light up in the
instrument cluster and a warning tone sounds.
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 example.
The steerability and braking characteristics may be severely affec- ted. The braking distance in an emergency braking situation can
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 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 176).
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 making an emergency stop using the electric parking
brake (Y page 176). 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. 254
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions Radar Sensors
Radar Sensors
Dirty See Opera‐ Dirty See Opera‐
tor's Manual tor's Manual At least one of the following driving systems or driving safety sys-
tems is temporarily restricted or inoperative:
R PRE-SAFE ®
PLUS
R PRE-SAFE ®
Brake
R COLLISION PREVENTION ASSIST PLUS
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.
A warning tone also sounds.
When the causes stated above no longer apply, the display mes-
sage 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 (Y page 174).
X Switch off the engine.
X Clean the sensors in the following locations (Y page 334):
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. 0075
SRS Malfunction SRS Malfunction
Service Required Service Required The restraint system is faulty. The
0075warning lamp also lights
up in the instrument cluster.
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.
For further information about the restraint system, see
(Y page 42). 260
Display
messagesOn-board computer and displays