2015 MERCEDES-BENZ CLA-Class fuel level

On-board computer ....................... 204
ECO start/stop function
Automatic engine start .................. 146
Automatic engine switch-off ..........1 45
Deactivating/activating ................. 146
General information ....................... 145
Important safety notes .................. 145
Introduction ................................... 145
Emergency
Automatic measures after an acci-
dent ................................................. 56
Emergency release
Driver's door ................................... .83
Trunk ............................................... 85
Vehicle ............................................. 83
Emergency Tensioning Devices
Activation ......................................... 54
Emissions control
Service and warranty information ....21
Engine
Check Engine warning lamp .......... .256
Display message ............................ 233
ECO start/stop function ................ 145
Engine number ............................... 353
Irregular running ............................ 147
Jump-starting ................................. 309
Starting problems .......................... 147
Starting the engine with the
SmartKey ....................................... 144
Starting with the Start/Stop but-
ton ................................................. 144
Switching off .................................. 161
Tow-starting (vehicle) ..................... 314
Engine electronics
Problem (malfunction) ................... 147
Engine oil
Adding .......................................... .288
Additives ........................................ 356
Checking the oil level ..................... 287
Checking the oil level using the
dipstick .......................................... 288
Display message ............................ 234
Filling capacity ............................... 356
Notes about oil grades ................... 356
Notes on oil level/consumption .... 287
Temperature (on-board computer, AMG vehicles) ................................ 214
Viscosity ........................................ 356 ESP
®
(Electronic Stability Pro-
gram)
Activating/deactivating (except
AMG vehicles) .................................. 68
Activating/deactivating (on-
board computer, except AMG
vehicles) ........................................ 210
AMG menu (on-board computer) ... 214
Characteristics ................................. 67
Deactivating/activating (button
in AMG vehicles) .............................. 68
Display message ............................ 218
ETS/4ETS ........................................ 67
Function/notes ................................ 67
General notes .................................. 67
Important safety information ........... 67
Trailer stabilization ........................... 70
Warning lamp ................................. 252
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 67
Exhaust
see Exhaust pipe
Exhaust check ................................... 164
Exhaust pipe
Cleaning ......................................... 296
Exterior lighting
Cleaning ......................................... 295
see Lights
Exterior mirrors
Adjusting ....................................... 103
Dipping (automatic) ....................... 104
Folding in when locking (on-boardcomputer) ...................................... 213
Folding in/out (automatically) ....... 104
Folding in/out (electrically) ........... 103
Out of position (troubleshooting) ... 104
Setting ........................................... 104
Storing settings (memory func-
tion) ............................................... 106
Storing the parking position .......... 105
Eyeglasses compartment ................. 263 F
Filler cap see Fuel filler flap
Flat tire
MOExtended tire s.......................... 301 Index
9

Preparing the vehicle ..................... 300
TIREFIT kit ...................................... 302
Floormats ...........................................2 84
Fog lamps
Switching on/off ........................... 111
Front fog lamps
Display message ............................ 231
Switching on/off ........................... 111
Fuel
Additives ........................................ 355
Consumption information .............. 355
Consumption statistics .................. 204
Displaying the current consump-
tion ................................................ 204
Displaying the range ..................... .204
Driving tips ................................... .164
E10 ................................................ 354
Fuel gauge ....................................... 31
Grade (gasoline) ............................ 354
Important safety notes .................. 354
Notes for AMG vehicles ................. 355
Problem (malfunction) ................... 160
Refueling ........................................ 158
Tank content/reserve fuel ............. 354
Fuel filler flap
Opening ......................................... 159
Fuel level
Calling up the range (on-board
computer) ...................................... 204
Fuel tank
Capacity ........................................ 354
Problem (malfunction) ................... 160
Fuses
Allocation chart ............................ .316
Before changing ............................ .315
Fuse box in the engine compart-
ment .............................................. 315
Fuse box in the front-passenger
footwell .......................................... 316
Important safety notes .................. 314 G
Garage door opener Clearing the memory ..................... 282
General notes ................................ 279
Important safety notes .................. 280
Opening/closing the garage door .. 282 Programming (button in the rear-
view mirror) ................................... 280
Synchronizing the rolling code ....... 281
Gasoline ............................................. 354
Gear indicator (on-board com-
puter, AMG vehicles) ......................... 214
Genuine parts ...................................... 20
Glove box .......................................... .263 H
Hazard warning lamps Display message ............................ 245
Switching on/off ........................... 113
Head restraints
Adjusting ......................................... 98
Adjusting (manually) ........................ 99
Adjusting (rear) ................................ 99
Headlamps
Fogging up ..................................... 115
see Automatic headlamp mode
Heating
see Climate control
High beam flasher .............................113
High-beam headlamps
Adaptive Highbeam Assist ............. 114
Changing bulbs .............................. 118
Display message ............................ 230
Switching on/off ........................... 112
Hill start assist .................................. 145
HOLD function
Activating ....................................... 179
Deactivating ................................... 179
Display message ............................ 235
Function/notes ............................ .178
Hood
Closing .......................................... .287
Display message ............................ 244
Important safety notes .................. 286
Opening ......................................... 286
Horn ...................................................... 30
Hydroplaning ..................................... 168 I
Ignition lock see Key positions
Immobilizer .......................................... 7110
Index

Hill start assist
Hill start assist helps you when pulling away
forwards or in reverse on an uphill gradient. It
holds the vehicle for a short time after you
have removed your foot from the brake pedal.
This gives you enough time to move your foot from the brake pedal to the accelerator pedal and to depress it before the vehicle begins to
roll. G
WARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if: R you are pulling away on a level road or on a
downhill gradient.
R the transmission is in position N.
R the electric parking brake is applied.
R ESP ®
is malfunctioning.
Further information on holding the vehicle
stationary on uphill gradients (Y page 153).ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stop- ped under certain conditions.
The engine starts automatically when the
driver wants to pull away again. The ECO
start/stop function thereby helps you to
reduce the fuel consumption and emissions
of your vehicle.
Important safety notes G
WARNING
If the engine is switched off automatically and you exit the vehicle, the engine is restarted automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes :
ECO start/stop display
If the engine has been switched off automat-
ically by the ECO start/stop function, the
è ECO symbol is shown in the multifunc-
tion display.
The stop/start function is automatically acti- vated each time you start the engine with the
SmartKey.
AMG vehicles: the ECO start/stop function
is only available in drive program C.
Automatic engine switch-off If the vehicle is braked to a standstill in
Dor N,
the ECO start/stop function switches off the engine automatically.
The ECO start/stop function is operational
when:
R the indicator lamp in the ECO button is lit
green.
R the outside temperature is within the range
that is suitable for the system.
R the engine is at normal operating temper-
ature.
R the set temperature for the vehicle interior
has been reached.
R the battery is sufficiently charged.
R the system detects that the windshield is
not fogged up when the air-conditioning
system is switched on. Driving
145Driving and parking Z

Problem
Possible causes/consequences and
M
MSolutions The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at a qualified specialist
workshop. The coolant tempera-
ture gauge shows a
value above 248 ‡
(120 †). The coolant
warning lamp may also
be on and a warning
tone may sound. The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 289). Observe the warning
notes as you do so and add coolant if necessary. Automatic transmission
Important safety notes
G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate. G
WARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Bear in mind that the power transmission
between the engine and the transmission is
interrupted when the engine is switched off. To prevent the vehicle from rolling away:
R when the engine is switched off and the
vehicle is stationary shift the automatic
transmission to park position Pand
R apply the electric parking brake DIRECT SELECT lever
Overview of transmission positions j
Park position with parking lock
k Reverse gear
i Neutral
h Drive 148
Automatic transmissionDriving and parking

with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
If you operate mobile communication equip-
ment while driving, you will be distracted from traffic conditions. You could also lose controlof the vehicle. There is a risk of an accident.
Only operate this equipment when the vehicleis stationary.
Observe the legal requirements for the coun- try in which you are driving. Some jurisdic-
tions prohibit the driver from using a mobile
phone while driving a vehicle.
If you make a call while driving, always use
hands-free mode. Only operate the telephone
when the traffic situation permits. If you are
unsure, pull over to a safe location and stop
before operating the telephone.
Bear in mind that at a speed of only 30 mph
(approximately 50 km/h), the vehicle covers
a distance of 44 ft (approximately 14 m) per
second.
Drive sensibly – save fuel Observe the following tips to save fuel:
R The tires should always be inflated to the
recommended tire pressure.
R Remove unnecessary loads.
R Remove roof racks when they are not nee-
ded.
R Warm up the engine at low engine speeds.
R Avoid frequent acceleration or braking.
R Have all maintenance work carried out as
indicated by the service intervals in the
Maintenance Booklet or by the service
interval display.
Fuel consumption also increases when driv-
ing in cold weather, in stop-start traffic and in
hilly terrain. Drinking and driving G
WARNING
Drinking and driving and/or taking drugs and driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of a serious or even fatal acci-
dent is greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Emission control G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
Certain engine systems are designed to keep
the level of poisonous components in exhaust fumes within legal limits.
These systems only work at peak efficiency if they are serviced exactly in accordance with
the manufacturer's specifications. For this
reason, only have work on the engine carried
out by qualified and authorized Mercedes-
Benz technicians.
The engine settings must not be changed
under any circumstances. Furthermore, all
specific service work must be carried out at
regular intervals and in accordance with the
Mercedes-Benz service requirements. Details
can be found in the Maintenance Booklet. 164
Driving tipsDriving and parking

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

Engine
Problem
Possible causes/consequences and
M
MSolutions ;
The yellow Check
Engine warning lamp
lights up while the
engine is running.
There may be a malfunction, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system
R in the fuel system
The emission limit values may be exceeded and the engine may be
in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop.
i In some states, you must immediately visit a qualified special-
ist workshop as soon as the yellow Check Engine warning lamp
lights up. This is due to the legal requirements in effect in these
states. If in doubt, check whether such legal regulations apply in the state in which you are currently driving. æ
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.
The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station. æ
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the
;
Check Engine warning
lamp may light up. The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist work-
shop. ?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the start of the scale. The temperature sensor for the coolant temperature gauge is
defective.
The coolant temperature is no longer being monitored. There is a risk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away (Y page 160).
X Consult a qualified specialist workshop. 256
Warning and indicator lamps in the instrument clusterOn-board computer and displays

weeks when cold and inflated to the pressure
recommended by the vehicle manufacturer
on the Tire and Loading Information placard
on the driver's door B-pillar or the tire pres-
sure label on the inside of the fuel filler flap. If
your vehicle has tires of a different size than
the size indicated on the Tire and Loading
Information placard or, if available, the tire
pressure label, you should determine the
proper tire pressure for those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pres-
sure telltale when one or more of your tires
are significantly underinflated. Accordingly,
when the low tire pressure telltale lights up,
you should stop and check your tires as soon
as possible, and inflate them to the proper
pressure. Driving on a significantly underin-
flated tire causes the tire to overheat and can
lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle's handling and stopping ability. Please note that the TPMS is not a substitute for proper tire
maintenance, and it is the driver's responsi-
bility to maintain correct tire pressure, even if
underinflation has not reached the level to
trigger illumination of the TPMS low tire pres-
sure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure telltale. When the sys-
tem detects a malfunction, the warning lamp
will flash for approximately a minute and then remain continuously illuminated. This
sequence will be repeated every time the vehi- cle is started as long as the malfunction
exists. When the malfunction indicator is illu-
minated, the system may not be able to detect
or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of reasons, including the installation of incom-
patible replacement or alternate tires or
wheels on the vehicle that prevent the TPMS from functioning properly. Always check the
TPMS malfunction telltale after replacing one
or more tires or wheels on your vehicle to
ensure that the replacement or alternate Tires and wheels allow the TPMS to continue to
function properly.
It is the driver's responsibility to set the tire
pressure to that recommended for cold tires
which is suitable for the operating situation
(Y page 322). Note that the correct tire pres-
sure for the current operating situation must
first be taught-in to the tire pressure monitor.
If there is a substantial loss of pressure, the
warning threshold for the warning message is aligned to the reference values taught-in.
Restart the tire pressure monitor after adjust-
ing the pressure of the cold tires
(Y page 328). The current pressures are
saved as new reference values. As a result, a warning message will appear if the tire pres-
sure drops significantly.
The tire pressure monitor does not warn you
of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
(Y page 322).
The tire pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tire is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering maneuvers.
The tire pressure monitor has a yellow warn-
ing lamp in the instrument cluster for indicat-
ing a pressure loss or malfunction. Whether
the warning lamp flashes or lights up indi-
cates whether a tire pressure is too low or the tire pressure monitor is malfunctioning:
R if the warning lamp is lit continuously, the
tire pressure on one or more tires is signif- icantly too low. The tire pressure monitor is
not malfunctioning.
R if the warning lamp flashes for around a
minute and then remains lit constantly, the
tire pressure monitor is malfunctioning. Tire pressure
327Wheels and tires Z