2015 MERCEDES-BENZ CLA-Class Battery

If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control.
If DISTRONIC PLUS detects that the vehicle in front has slowed down, it brakes your vehicle.
In this way, the distance you have selected is
maintained.
If DISTRONIC PLUS detects a faster-moving
vehicle in front, it increases the driving speed. The vehicle is only accelerated up to the
speed you have stored.
Selecting the drive program
DISTRONIC Plus supports a sporty driving
style when you have selected the Sor Mdriv-
ing program (Y page 153). Acceleration
behind the vehicle in front or to the set speed is then noticeably more dynamic. If you have
selected the E(AMG vehicles: C) drive pro-
gram, the vehicle accelerates more gently.
This setting is recommended in stop-and-
start traffic.
Changing lanes
If you change to the passing lane, DISTRONIC PLUS supports you when:
R you are driving faster than 70 km/h
R DISTRONIC PLUS is maintaining the dis-
tance to a vehicle in front
R you switch on the appropriate turn signal
R DISTRONIC PLUS does not detect a danger
of collision
If these conditions are fulfilled, your vehicle is
accelerated. Acceleration will be interrupted
if changing lanes takes too long or if the dis-
tance between your vehicle and the vehicle in front becomes too small. Stopping G
WARNING
When leaving the vehicle, even if it is braked
only by DISTRONIC PLUS, it could roll away if:
R there is a malfunction in the system or in
the voltage supply.
R DISTRONIC PLUS has been deactivated
with the cruise control lever, e.g. by a vehi-
cle occupant or from outside the vehicle.
R the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
R the battery is disconnected.
R the accelerator pedal has been depressed,
e.g. by a vehicle occupant.
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
DISTRONIC PLUS and secure the vehicle
against rolling away.
For further information on deactivating
DISTRONIC PLUS (Y page 176).
If DISTRONIC PLUS detects that the vehicle in front is stopping, it brakes your vehicle until it is stationary.
Once your vehicle is stationary, it remains
stationary and you do not need to depress the
brake.
i After a time, the electric parking brake
secures the vehicle and relieves the service
brake.
i Depending on the specified minimum dis-
tance, your vehicle will come to a standstill
at a sufficient distance behind the vehicle in
front. The specified minimum distance is
set using the control on the cruise control
lever. 174
Driving systemsDriving and parking

R
the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
R the battery is disconnected
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
the HOLD function and secure the vehicle
against rolling away.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations.
To prevent damage to the vehicle, deacti-
vate DISTRONIC PLUS and the HOLD func-
tion in the following or other similar situa-
tions:
R when towing the vehicle
R in the car wash
Deactivating the HOLD function
(Y page 179).
Activation conditions You can activate the HOLD function if:
R the vehicle is stationary
R the engine is running or if it has been auto-
matically switched off by the ECO start/
stop function
R the driver's door is closed or your seat belt
is fastened
R the electric parking brake is released
R DISTRONIC PLUS is deactivated
R the transmission is in position D,Ror Non
vehicles with automatic transmission
Activating the HOLD function X
Make sure that the activation conditions
are met.
X Depress the brake pedal.
X Quickly depress the brake pedal further
until :appears in the multifunction dis-
play.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again.
Deactivating the HOLD function The HOLD function is deactivated automati-
cally if:
R you accelerate. On vehicles with automatic
transmission: only when the transmission
is in position Dor R.
R the transmission is in position Pon vehicles
with automatic transmission.
R you depress the brake pedal again with a
certain amount of pressure until :disap-
pears from the multifunction display.
R you activate DISTRONIC PLUS.
R you secure the vehicle using the electric
parking brake.
i After a time, the electric parking brake
secures the vehicle and relieves the service brake.
When the HOLD function is activated, the
transmission is shifted automatically to posi- tion Pif:
R the driver's seat belt is not fastened and the
driver's door is open.
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
The electric parking brake secures the vehicle
automatically if the HOLD function is activa-
ted when the vehicle is stationary and:
R a system malfunction occurs.
R the power supply is not sufficient. Driving systems
179Driving and parking Z

22 mph (35 km/h). While in operation, the
system independently locates and measures
parking spaces on both sides of the vehicle.
Active Parking Assist will only detect parking spaces:
R that are parallel or at right-angles to the
direction of travel
R that are parallel to the direction of travel
and at least 59 in (1.5 m) wide
R that are parallel to the direction of travel
and at least 39.5 in (1.0 m) longer than your
vehicle
R that are at right angles to the direction of
travel and at least 39.5 in (1.0 m) wider
than your vehicle
i Note that Active Parking Assist cannot
measure the length of a parking space if it
is at right angles to the direction of travel.
You will need to judge whether your vehicle will fit into the parking space.
When driving at speeds below 19 mph
(30 km/h), you will see parking symbol ;as
a status indicator in the instrument cluster.
When a parking space has been detected, an arrow towards the right or the left also
appears. By default, Active Parking Assist
only displays parking spaces on the front-
passenger side. Parking spaces on the driv-
er's side are displayed as soon as the turn
signal on the driver's side is activated. When
parking on the driver's side, this must remain
activated until you confirm the use of Active
Parking Assist by pressing the abutton on
the multifunction steering wheel. The system
automatically determines whether the park-
ing space is parallel or at right-angles to the
direction of travel.
A parking space is displayed while you are
driving past it, and until you are approx-
imately 50 ft (15 m) away from it. Pa
rking G
WARNING
If you leave the vehicle when it is only being
braked by Active Parking Assist it could roll
away if:
R there is a malfunction in the system or in
the voltage supply.
R the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
R the battery is disconnected.
R the accelerator pedal has been depressed,
e.g. by a vehicle occupant.
There is a risk of an accident.
Before leaving the vehicle, always secure it
against rolling away.
i When PARKTRONIC detects obstacles,
Active Parking Assist brakes automatically
during the parking process. You are respon- sible for braking in good time.
X Stop the vehicle when the parking space
symbol shows the desired parking space in
the instrument cluster.
X Shift the transmission to position R.
The Start Park Assist? Start Park Assist? Yes: OK
Yes: OKNo:
No:
% message appears in the multifunction
display.
X To cancel the procedure: press the%
button on the multifunction steering wheel or pull away.
or
X To park using Active Parking Assist:
press the abutton on the multifunction
steering wheel.
The Park Assist Active Accelerate Park Assist Active Accelerate
and Brake
and Brake Observe Surroundings
Observe Surroundings mes-
sage appears in the multifunction display.
X Let go of the multifunction steering wheel.
X Back up the vehicle, being ready to brake at
all times. When backing up, drive at a speed below approximately 6 mph (10 km/h). 186
Driving systemsDriving an
d parking

trip odometer
:and odometer ;is
shown.
Trip computer "From Start" or "From
Reset" :
Distance
; Driving time
= Average speed
? Average fuel consumption
X Press the =or; button on the steer-
ing wheel to select the Trip
Tripmenu.
X Press the 9or: button to select
From Start
From Start orFrom Reset
From Reset.
The values in the From Start
From Startsubmenu are
calculated from the start of a journey whilst
the values in the From Reset From Resetsubmenu are
calculated from the last time the submenu
was reset (Y page 205).
The From Start From Start trip computer is automati-
cally reset when:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 miles have been exceeded.
The From Reset
From Reset trip computer is automati-
cally reset if the value exceeds 9,999 hours or 99,999 miles.
ECO display The ECO display is not available for AMG vehi-
cles.
X Press the =or; button on the steer-
ing wheel to select the Trip Tripmenu.
X Press the 9or: button to select
ECO DISPLAY
ECO DISPLAY.
If the ignition remains switched off for longer than four hours, the ECO display will be auto-
matically reset.
For further information on the ECO display,
see (Y page 165).
Displaying the range and current fuel
consumption On AMG vehicles, only approximate range
:
is shown.
X Press the =or; button on the steer-
ing wheel to select the Trip Tripmenu.
X Press the 9or: button to select
approximate range :and current fuel con-
sumption ;.
Approximate range :that can be covered is
calculated according to your current driving
style and the amount of fuel in the tank. If
there is only a small amount of fuel left in the
fuel tank, the display shows a vehicle being
refueled Cinstead of approximate
range :.
Recuperation display =shows you if energy
has been recuperated from the kinetic energy
in overrun mode and saved in the battery.
Recuperation display =depends on the
engine installed and is therefore not available
in all vehicles. 204
Menus and submenusOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions The yellow
!warning lamp lights up. If you manually apply or
release the electric parking brake, the red F(USA only)/ !
(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 selector lever to P, as the electric parking brake is not
applied automatically.
X Visit a qualified specialist workshop. F(USA
only)!
(Canada
only)
Parking Parking Brake
BrakeInop‐
Inop‐
erative
erative The yellow
!warning lamp lights up. The red F(USA
only)/ !(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.
If the electric parking brake still cannot be applied: X Visit a qualified specialist workshop. The yellow
!warning lamp lights up and the red F(USA
only)/ !(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X Shift the selector lever to position P.
X Visit a qualified specialist workshop. Display
messages
223On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions #
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
! Do not continue driving. The engine could otherwise overheat.
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 160).
X Consult a qualified specialist workshop. #
Stop Vehicle See Stop Vehicle See
Operator's Manual Operator's Manual The battery is no longer being charged and the battery charge level
is too low.
A warning tone also sounds.
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 160).
X Observe the instructions in the #See SeeOperator's
Operator's Manual
Manual
display message.
X Consult a qualified specialist workshop. 4
Check Engine Oil Check Engine Oil
When When
Next
NextRefueling
Refueling The engine oil level has dropped to the minimum level.
A warning tone also sounds.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
X Check the oil level when next refueling, at the latest
(Y page 288).
X If necessary, add engine oil (Y page 288).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. æ
Fuel Level Low Fuel Level Low The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station. 234
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Auxiliary Battery
Auxiliary Battery
Malfunction Malfunction The auxiliary battery for the automatic transmission is no longer
being charged.
X Visit a qualified specialist workshop at the next opportunity.
X Until then, set the selector lever to position Pbefore you switch
off the engine.
X Before leaving the vehicle, apply the electric parking brake. Trans.
Trans.
Oil
OilOverhea‐
Overhea‐
ted Drive on with
ted Drive on with
Care Care AMG vehicles: the transmission oil has overheated.
Manual drive program
Mand the temporarily active manual drive
program are no longer available. The engine power output is
reduced.
X Allow the vehicle to cool down. 4matic Currently 4matic Currently
Unavailable Unavailable 4MATIC has overheated. The vehicle is only driven by the front
wheels.
X Drive on.
The airflow cools 4MATIC more quickly.
When the display message goes out, 4MATIC is available again
and the vehicle is driven by all four wheels. 4matic Inoperative 4matic Inoperative 4MATIC is malfunctioning. The vehicle is only driven by the front
wheels.
X Visit a qualified specialist workshop. N The trunk lid is open.
X Close the trunk lid. M The hood is open.
A warning tone also sounds.
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 160).
X Close the hood. C At least one door is open. A warning tone also sounds.
X Close all the doors. 244
Display
messagesOn-board computer and displays

SmartKey
Display messages
Possible causes/consequences and
M
MSolutions Â
Key Does Not Key Does Not
Belong to Vehicle Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X Use the correct SmartKey. Â
Take Take
Your
YourKey
Keyfrom
from
Ignition
Ignition The SmartKey is in the ignition lock.
X Remove the SmartKey. Â
Obtain a New Key Obtain a New Key The SmartKey needs to be replaced.
X Visit a qualified specialist workshop. Â
Replace Replace
Key
KeyBattery
Battery The SmartKey battery is discharged.
X Change the battery (Y page 78).Â
Don't Forget Your Don't Forget Your
Key Key The display message is shown for a maximum of 60 seconds and
is only a reminder.
You have opened the driver's door with the engine switched off.
The SmartKey is not in the ignition lock.
X Take the SmartKey with you when you leave the vehicle. Â
Key Not Detected Key Not Detected
(red display message) The SmartKey is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle
centrally or start the engine.
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 160).
X Locate the SmartKey. Because there is interference from a strong source of radio waves,
the key is not detected whilst the engine is running.
A warning tone also sounds.
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 160).
X Insert the SmartKey into the ignition lock and bring into key
mode. 246
Display messagesOn-board computer and displays