2017 MERCEDES-BENZ CLA engine

Drive program I (Individual)In drive progra m I th e following properties of th e
drive progra m can be selected:R
th e drive (engin e and transmissio n manage-
ment) R
th e suspensio n (vehicles wit h dampin g sys-
te m or AM G adaptive sport suspensio n sys-
tem) R
th e steerin gR
th e availabilit y of th e ECO start/sto p functionR
th e climat e control
Information about configurin g drive progra m I
wit h th e multimedia system can be found in th e
Digital Operator' s Manual.
i To permanentl y select th e gear s in drive
progra m I usin g th e steerin g whee l paddl e
shifters , select th e M (manual) setting fo r th e
drive.
Drive program E (Economy)Drive progra m E is characterized by th e follow-
ing: R
comfort-oriented engin e settings.R
optimal fue l consumption resultin g from th e
automati c transmissio n shiftin g up sooner.R
th e vehicl e pulls away mor e gentl y in forwar d
and revers e gears, unless th e accelerato r
peda l is depressed fully.R
th e vehicl e has improved drivin g stability, fo r
exampl e on slipper y roa d surfaces.R
th e automati c transmissio n shiftin g up
sooner. This result s in th e vehicl e bein g driven
at lowe r en gin e s peeds and th e w
heels bein g
less likely to spin .R
glidin g mod e is activated automatically when
engine-internal condition s are fulfilled and
th e accelerato r is no t depressed. At th e sam e
time th e transmission’s clutc h opens and th e
vehicl e rolls freely usin g it s kineti c energy. As
a result great distances can be completed
without th e engin e brak e and fue l consump-
tion reduced.
i The availabilit y of glidin g mod e depend s on
various factors , includin g th e following :R
th e engin e and transmissio n temperatureR
th e downhill gradien tR
th e vehicl e speedR
performin g regular adaptation function s Whe n you depress th e brak e pedal, glidin g
mod e is deactivated, dependin g on peda l
pressure.
Whe n you activat e cruise control or Distanc e
Pilo t DISTRONIC, glidin g mod e is no t availa-
ble.
Mercedes-AMG vehicles Drive program I (Individual)In drive progra m I th e following properties of th e
drive progra m can be selected: R
th e drive (engin e management)R
th e transmissio n managemen tR
th e suspensio n (vehicles wit h AM G adaptive
sport suspensio n system)R
ES P ®
Information about configurin g drive progra m I
wit h th e multimedia system can be found in th e
Digital Operator' s Manual.
Drive program C (Comfort)Drive progra m C is characterized by th e follow-
ing: R
th e vehicl e deliver s comfortable, economical
handlin g characteristics .R
th e vehicl e pulls away mor e gentl y in forwar d
and revers e gears, unless th e accelerato r
peda l is depressed fully. R
th e vehicl e has improved drivin g stability, fo r
exampl e on slipper y roa d surfaces.R
optimal fue l consumption resultin g from th e
automati c transmissio n shiftin g up sooner.
The vehicl e is driven in th e low engin e speed
range and th e wheels are less likely to spin .R
glidin g mod e is available. R
th e ECO start/sto p function is available.
Drive program S (Sport)
Drive progra m S is characterized by th e follow-
ing: R
th e vehicl e exhibits sport y drivin g character-
istics . R
th e automati c transmissio n s hift s up later.
The fue l consumption possibl y bein g higher
as a result of th e later automati c transmissio n
shift points . R
th e suspensio n exhibits stiff springin g and
dampin g setting s (vehicles wit h AI R adaptive
sport suspensio n system) .134
Automatic transmission
Driving and parking

Permanent setting (Mercedes-AMG
vehicles) X
To activate: shift the selector lever to posi-
tion P .X
Press button C .X
To deactivate: press button C .
or X
If position D (automatic transmission) is
selected for the transmission in drive pro-
gram I : shift to drive program I with the
DYNAMIC SELECT controller.
Shifting gears
! Mercedes-AMG vehicles: the automatic
transmission does not shift up automatically
even when the engine limiting speed for the
current gear is reached. When the engine lim-
iting speed is reached, the fuel supply is cut to
prevent the engine from overrevving. Always
make sure that the engine speed does not
reach the red area of the tachometer. There is
otherwise a risk of engine damage.
X
To shift up: pull steering wheel paddle
shifter D .
The automatic transmission shifts up to the
next gear. All vehicles (except Mercedes-AMG vehi-
cles): if the maximum engine speed on the
currently engaged gear is reached and you
continue to accelerate, the automatic trans-
mission automatically shifts up in order to
prevent engine damage. X
To shift down: pull steering wheel paddle
shifter C .
The automatic transmission shifts down to
the next gear.
Automatic down shifting occurs when coast-
ing.
If the engine exceeds the maximum engine
speed when shifting down, the automatic
transmission protects against engine damage
by not shifting down.
Shift recommendation
The gearshift recommendations assist you in
adopting an economical driving style. The rec-
ommended gear is shown in the multifunction
display. X
Shift to recommended gear D according to
gearshift recommendation C when shown in
the multifunction display.
Upshifting (Mercedes-AMG vehicles)
! The automatic transmission does not shift
up automatically even when the engine limit-
ing speed for the current gear is reached.
When the engine limiting speed is reached,
the fuel supply is cut to prevent the engine
from overrevving. Always make sure that the
engine speed does not reach the red area of
the tachometer. There is otherwise a risk of
engine damage.136
Automatic transmission
Driving and parking

Before the engine speed reaches the red area,
an upshift indicator will be shown in the multi-
function display. X
Shift to recommended gear C when mes-
sage D is shown in the multifunction display.
Kickdown X
For maximum acceleration, depress the
accelerator pedal beyond the pressure point.
The automatic transmission shifts to a lower
gear depending on the engine speed. X
Shift back up once the desired speed is
reached. During kickdown, you cannot shift gears using
the steering wheel paddle shifters.
If you apply full throttle, the automatic trans-
mission shifts up to the next gear when the
maximum engine speed is reached. This pre-
vents the engine from overrevving.
Mercedes-AMG vehicles: it is only possible to
use kickdown in temporary manual drive pro-
gram M . When manual drive program M is per-
manently activated, kickdown is not possible.
Problems with the transmission Problem
Possible causes/consequences and P Solutions
The transmission has
problems shifting gear. The transmission is losing oil. X
Have the transmission checked at a qualified specialist workshop
immediately.
The acceleration ability
is deteriorating.
The transmission no lon-
ger shifts into all of the
gears.
Reverse gear can no lon-
ger be engaged. The transmission is in emergency mode. X
Stop the vehicle. X
Shift the transmission to position P .X
Switch off the engine. X
Wait at least ten seconds before restarting the engine. X
Shift the transmission to position D .X
Have the transmission checked at a qualified specialist workshop
immediately.
Refueling
Important safety notes
G WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion. You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before
refueling.
G WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury. Refueling 137
Driving and parking Z

You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following: R
Wash away fuel from skin immediately
using soap and water. R
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay. R
If fuel is swallowed, seek medical assis-
tance without delay. Do not induce vomit-
ing. R
Immediately change out of clothing which
has come into contact with fuel.
G WARNING
Electrostatic buildup can create sparks and
ignite fuel vapors. There is a risk of fire and
explosion.
Always touch the vehicle body before opening
the fuel filler flap or touching the fuel pump
nozzle. Any existing electrostatic buildup is
thereby discharged.
! Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the ignition
if you accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel system.
Even small amounts of the wrong fuel could
result in damage to the fuel system and the
engine. Notify a qualified specialist workshop
and have the fuel tank and fuel lines drained
completely.
! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when adding fuel from a fuel can.
The fuel lines and/or the fuel injection system
could otherwise be blocked by particles from
the fuel can. Do not get into the vehicle again during the refu-
eling process. Otherwise, electrostatic charge
could build up again.
If you overfill the fuel tank, fuel could spray out
when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
( Y
page 309).
Refueling
General information Pay attention to the important safety notes
( Y
page 137).
The fuel filler flap is unlocked/locked automat-
ically when you unlock/lock the vehicle with the
SmartKey.
The position of the fuel filler cap is displayed

Parking
Important safety notes
G WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the vehi-
cle which are hot. Take particular care not to
park on dry grassland or harvested grain
fields.
G WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example: R
release the parking brake. R
shift the automatic transmission out of the
parking position P .R
start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally: R
the electric parking brake must be applied. R
the transmission must be in position P and the
transmission position display must show P .R
the SmartKey must be removed from the igni-
tion lock. R
on uphill or downhill gradients, the front
wheels must be turned towards the curb. Switching off the engine
Important safety notes
G WARNING
The automatic transmission switches to neu-
tral position N when 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.
Automatic transmission X
Apply the electric parking brake. X
All vehicles (except Mercedes-AMG vehi-
cles): shift the transmission to position P .
X
Mercedes-AMG vehicles: press button C .X
With the SmartKey: turn the SmartKey to
position 0 in the ignition lock and remove it.
The immobilizer is activated. X
With the Start/Stop button: press the
Start/Stop button ( Y
page 121).
The engine stops and all the indicator lamps in
the instrument cluster go out.
When the driver's door is closed, this corre-
sponds to SmartKey position 1 . When the
driver's door is open, this corresponds to
SmartKey position 0 : "Key removed".
If you switch the engine off with the transmis-
sion in position R or D , the automatic transmis-
sion shifts to N automatically.
With the SmartKey: if you then open the driv-
er's door or the front-passenger door or remove140
Parking
Driving and parking

the SmartKey from the ignition, the automatic
transmission shifts to P automatically.
With the Start/Stop button: if you then open
the driver's door or the front-passenger door,
the automatic transmission shifts to P automat-
ically.
If you want the automatic transmission to
remain in neutral N , e.g. when having the vehicle
cleaned in an automatic car wash with a towing
system: X
Vehicles with the Start-Stop button:
remove the Start-Stop button from the igni-
tion lock. X
Insert the SmartKey into the ignition lock. X
All vehicles: switch the ignition on.X
Depress the brake pedal and keep it
depressed. X
Shift to neutral N .X
Release the brake pedal. X
Release the electric parking brake. X
Switch off the ignition and leave the SmartKey
in the ignition lock.
Electric parking brake
General notes
G WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example: R
release the parking brake. R
shift the automatic transmission out of the
parking position P .R
start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle. The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or there is a malfunction in
the system, it may not be possible to apply the
released parking brake. X
If this is the case, only park the vehicle on
level ground and secure it to prevent it rolling
away. X
Shift the automatic transmission to position
P .
It may not be possible to release an applied
parking brake if the on-board voltage is low or
there is a malfunction in the system. Contact a
qualified specialist workshop.
The electric parking brake performs a function
test at regular intervals while the engine is
switched off. The s ounds that can be heard while
th is is occurring are normal.
Applying or releasing manually
X
To engage: push handle C .
When the electric parking brake is applied,
the red I (USA only) or $ (Canada
only) indicator lamp lights up in the instru-
ment cluster.
The electric parking brake can also be applied
when the SmartKey is removed. X
To release: pull handle C .
The red I (USA only) or $ (Canada
only) indicator lamp in the instrument cluster
goes out.
The electric parking brake can only be
released: R
when the SmartKey is in position 1 or 2 in
the ignition lock ( Y
page 121) orR
if the ignition was switched on using the
Start/Stop button Parking 141
Driving an d parking Z

Drivin g tips
General notes
Important safet y notes
G WARNING
If you switch of f th e ignition whil e driving,
safety-relevant function s are only available
wit h limitations, or no t at all. Thi s could affect,
fo r example, th e powe r steerin g and th e brake
boostin g effect . You will require considerably
more effort to steer and brake . There is a ris k
of an accident.
Do no t switch of f th e ignition whil e driving.
G WARNING
If you operat e mobile communication equip -
men t whil e driving, you will be distracted from
traffic conditions. You could also los e contro l
of th e vehicle. There is a ris k of an accident.
Only operat e this equipmen t when th e vehicle
is stationary.
Observ e th e lega l requirements fo r th e country
in whic h you are driving. Some jurisdiction s pro -
hibi t th e driver from usin g a mobile phone whil e
drivin g a vehicle.
If you mak e a cal l whil e driving, always use
hands-free mode. Only operat e th e telephon e
when th e traffic situation permits. If you are
unsure , pull over to a saf e location and stop
befor e operatin g th e telephone.
Bear in min d that at a speed of only 30 mph
(approximately 50 km/h), th e vehicle cover s a
distanc e of 44 ft (approximately 14 m) per sec-
ond.
Drive sensibly – save fuel Observe the following tips to save fuel: R
The tires should always be inflated to the rec-
ommended tire pressure. R
Remove unnecessary loads. R
Remove roof racks when they are not needed. 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 Main- tenance Booklet or by the service interval dis-
play.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic and in hilly ter-
rain.
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. Always have
work on the engine carried out at a qualified
specialist workshop. Mercedes-Benz recom-
mends that you use an authorized Mercedes-
Benz Center for this purpose. In particular, work
relevant to safety or on safety-related systems
must be carried out at a qualified specialist
workshop.
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. Driving tips 143
Driving and parking Z

In addition to driving style, the actual consump-
tion is affected by other factors, such as: R
Load R
Tire pressure R
Cold start R
Choice of route R
Active electrical consumers
These factors are not included in the ECO dis-
play.
An economical driving style specially requires
driving at moderate engine speeds.
Achieving a higher value in the categories
"Acceleration" and "Constant": R
observe the gearshift recommendations. R
drive the vehicle in drive program C or E
(vehicles with a DYNAMIC SELECT button).
On long journeys at a constant speed, e.g. on the
highway, only the outer area for "constant" will
change.
The ECO display summarizes the driving style
from the start of the journey to its completion.
Therefore, there are more marked changes in
the outer areas at the start of a journey. On lon-
ger journeys, there are fewer changes. For more
marked changes, perform a manual rest
( Y
page 178).
For more information on the ECO display, see
( Y
page 177).
Braking
Important safety notes
G WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients
! On long and steep gradients, you must
reduce the load on the brakes by shifting to a
lower gear in good time. This allows you to
take advantage of engine braking. For this you
must first activate manual gearshifting. This helps you to avoid overheating the brakes and
wearing them out excessively.
When you take advantage of engine braking, it
is possible that a drive wheel will not rotate for
some time, e.g. on a slippery road surface.
This could cause damage to the drive train.
This type of damage is not covered by the
Mercedes-Benz warranty.
Briefly depressing the accelerator pedal on
downhill gradients while the manual drive pro-
gram M is temporarily activated: the automatic
transmission may switch to the last active auto-
matic drive program E or S . The automatic trans-
mission may shift to a higher gear. This can
reduce the engine's braking effect.
Heavy and light loads
G WARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This
increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately. Drive
on for a short while. This allows the airflow to
cool the brakes more quickly.
Wet roads If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion. Driving tips 145
Driving and parking Z