
Parking Pilot will detect only parking spaces
which are:
R parallel or at right angles to the direction of
travel
R that are parallel to the direction of travel and
are at least 1.5 m wide
R that are parallel to the direction of travel and
at least 1.0 m longer than your vehicle
R that are at right angles to the direction of
travel and at least 1.0 mwider than your vehi-
cle
i Note that Parking Pilot 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 in the park-
ing space.
When driving at speeds below 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. Parking Pilot displays only
parking spaces on the front-passenger side as
standard. Parking spaces on the driver'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 Parking Pilot by pressing the a button on the multifunction steering
wheel. The system automatically determines
whether the parking space is parallel or at right
angles to the direction of travel.
A parking space is displayed while you are driv- ing past it, and until you are approximately 15 m
away from it.
Parking G
WARNING
If you leave the vehicle when it is only being
braked by Parking Pilot, 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 are tam-
pered with.
R the battery is disconnected
R the vehicle is accelerated, e.g. by a vehicle
occupant.
There is a risk of an accident. Before leaving the vehicle, always secure it
against rolling away.
i Vehicles with automatic transmission:
If Parking Assist PARKTRONIC detects obsta-
cles, Parking Pilot brakes automatically whilst
the vehicle is parking. You are responsible for
braking in good time.
X Stop the vehicle when the parking symbol
shows the desired parking space in the instru-
ment cluster.
X Vehicles with automatic transmission:
shift the transmission to position
R.
Vehicles with manual transmission: shift
to reverse gear.
The Start Parking Pilot?
Start Parking Pilot? 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 Parking Pilot: press thea
button on the multifunction steering wheel.
The Parking Pilot active Accelerate Parking Pilot active Accelerate
and brake
and brake Observe surroundings
Observe surroundings mes-
sage appears in the multifunction display.
X Release the multifunction steering wheel.
X Reverse the vehicle, being ready to brake at
all times. When reversing, drive at a speed
below 10 km/h. Otherwise Parking Pilot is
cancelled.
Vehicles with automatic transmission:
Parking Pilot brakes the vehicle to a standstill
when the vehicle approaches the rear border
of the parking space.
Manoeuvring may be required in tight parking spaces.
X Vehicles with manual transmission: stop
when Parking Assist PARKTRONIC sounds the continuous warning tone, if not before.
Manoeuvring may be required in tight parking
spaces.
Vehicles with automatic transmission: the
Parking Pilot active Select D Parking Pilot active Select D Observe
Observe
surroundings
surroundings message appears in the multi-
function display.
Vehicles with manual transmission: the
Parking Pilot active Engage forward Parking Pilot active Engage forward
gear gear Observe surroundings
Observe surroundings message
appears in the multifunction display. 182
Driving systemsDriving and parking

Select this view when you are driving out of an
exit and the view of crossing traffic is restricted,
for example. ATTENTION ASSIST
General notes ATTENTION ASSIST helps you during long,
monotonous journeys such as on motorways
and trunk roads. It is active in the 60 km/h to
200 km/h speed range. If ATTENTION ASSIST
detects typical indicators of fatigue or increas-
ing lapses in concentration on the part of the
driver, it suggests taking a break.
Important safety notes ATTENTION ASSIST is only an aid. It may not
always detect fatigue or lapses in concentration
until too late, or may not detect them at all. The system is not a substitute for a well-rested and
attentive driver.
The functionality of ATTENTION ASSIST is
restricted, and warnings may be delayed or not
occur at all in the following situations:
R the length of the journey is less than approx-
imately 30 minutes
R if the road condition is poor, e.g. if the surface
is uneven or contains potholes
R in case of strong side winds
R if you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration
R if you are predominantly driving at a speed
below 60 km/h or above 200 km/h
R if the time has been set incorrectly
R in active driving situations, such as when you
change lanes or change your speed
ATTENTION ASSIST is reset and starts assessing your tiredness again when you continue your
journey if:
R you switch off the engine
R you take off your seat belt and open the driv-
er's door, e.g. for a change of drivers or to
take a break Displaying the attention level
You can have current status information dis-
played in the Assistance menu (Y
page 208) of
the on-board computer.
X Select the assistance graphic display for
ATTENTION ASSIST using the on-board com-
puter (Y page 208).
The following information is displayed: R the length of the journey since the last break
R the attention level determined by ATTENTION
ASSIST( Attention level
Attention level), displayed in a
bar display in five levels from high to low
R if ATTENTION ASSIST is unable to calculate
the attention level and cannot output a warn-
ing, the System suspended System suspended message
appears. The bar display then changes the
display, e.g. if you are driving at a speed below 60 km/h or above 200 km/h.
Activating ATTENTION ASSIST X
Activate ATTENTION ASSIST using the on-
board computer (Y page 209).
The system determines the attention level of
the driver depending on the setting selected:
Standard Standard selected: the sensitivity with which
the system determines the attention level is set to normal.
Sensitive Sensitive selected: the sensitivity is set
higher. The attention level detected by ATTEN-
TION ASSIST is adapted accordingly and the
driver is warned earlier.
When ATTENTION ASSIST is deactivated, the
é symbol appears in the multifunction dis-
play in the assistance graphic display.
When ATTENTION ASSIST has been deactivated,
it is automatically reactivated after the engine
has been switched off. The sensitivity selected Driving systems
189Driving and parking Z

X
Press the %button on the steering wheel.
X Confirm Yes
Yes with a.
The RACETIMER interrupts timing if you stop the
vehicle and turn the key to position 1in the igni-
tion lock. If you turn the key to position 3and
then press ato confirm Start
Start, timing is
continued.
Resetting the current lap
X Stop the RACETIMER.
X Press the =or; button to select
Reset Lap
Reset Lap.
X Press ato reset the lap time to "0".
Deleting all laps If you switch off the engine, the RACETIMER is
reset to "0" after 30 seconds. All laps are
deleted.
You cannot delete individual stored laps. If you
have stopped 16 laps, the current lap does not
have to be reset.
X Reset the current lap.
X Press ato confirm Reset Reset.
Reset Race Timer?
Reset Race Timer? appears in the multi-
function display.
X Press the :button to select Yes
Yes and press
the a button to confirm.
All laps are deleted.
Overall evaluation :
RACETIMER overall evaluation
; Total time driven =
Average speed
? Distance covered
A Maximum speed
This function is shown if you have stored at least one lap and stopped the RACETIMER.
X Press =or; on the steering wheel to
select the AMG AMGmenu.
X Press the 9button repeatedly until the
overall evaluation appears.
Lap evaluation :
Lap
; Lap time
= Average lap speed
? Lap length
A Top speed during lap
This function is only available if you have stored
at least two laps and have stopped the RACE-
TIMER.
X Press the =or; button on the steering
wheel to select the AMG
AMG menu.
X Press the 9button repeatedly until a lap
evaluation appears.
Each lap is shown in a separate submenu. The fastest lap is indicated by flashing symbol :.
X Press the 9or: button to select a dif-
ferent lap evaluation. Menus and submenus
215On-board computer and displays Z

H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the Service
Booklet or contact a qualified specialist work- shop for more information.
! You should have all work involving the bat-
tery carried out at a qualified specialist work-
shop. In the exceptional case that it is neces-
sary for you to disconnect the battery your-
self, make sure that:
R you switch off the engine and remove the
key. On vehicles with KEYLESS-GO, ensure
that the ignition is switched off. Check that all the indicator lamps in the instrument
cluster are off. Otherwise, electronic com-
ponents, such as the alternator, may be
damaged.
R you first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps.
Otherwise, the vehicle's electronic system
may be damaged.
R in vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery. The vehicle
is secured against rolling away. You can
then no longer move the vehicle.
The battery and the cover of the positive ter-
minal clamp must be fitted securely during
operation.
Comply with safety precautions and take pro-
tective measures when handling batteries. Risk of explosion
Fire, naked flames and smoking are
prohibited when handling the bat-
tery. Avoid creating sparks.
Battery acid is caustic. Avoid contact
with the skin, eyes or clothing.
Wear suitable protective clothing; in
particular, gloves, an apron and a
face mask.
Immediately rinse acid splashes off
with clean water. Consult a doctor if
necessary. Wear eye protection.
Keep children at a safe distance.
Observe this Owner's Manual.
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to prevent vehicle
occupants from suffering acid burns should the battery be damaged in the event of an accident.
In order for the battery to achieve the maximum possible service life, it must always be suffi-
ciently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the vehicle.In such cases, have the battery disconnected ata qualified specialist workshop. You can also
charge the battery with a charger recommended
by Mercedes-Benz. For more information,
please contact a qualified specialist workshop.
Have the battery charge checked more fre-
quently if you use the vehicle mainly for short
trips or if you leave it standing idle for a lengthy period. Consult a qualified specialist workshop
if you wish to leave your vehicle parked up for a
long period of time.
When you park the vehicle, remove the key if you do not require any electrical consumers. The 300
Battery (vehicle)Breakdown assistance

G
WARNING
During charging and jump-starting, explosive gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, naked flames, creating sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting. Do not lean over a battery. G
WARNING
During the charging process, a battery produces hydrogen gas. If a short circuit occurs or sparks
are created, the hydrogen gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
R Never place metal objects or tools on a battery.
R It is important that you observe the described order of the battery terminals when connecting
and disconnecting a battery.
R When jump-starting, make sure that the battery poles with identical polarity are connected.
R It is particularly important to observe the described order when connecting and disconnecting
the jump leads.
R Never connect or disconnect the battery terminals while the engine is running. G
WARNING
A discharged battery can freeze at temperatures below freezing point. When jump-starting the
vehicle or charging the battery, gases can escape from the battery. There is a risk of an explosion.
Allow the frozen battery to thaw out before charging it or jump-starting.
! Vehicles with a petrol engine:
avoid repeated and lengthy starting attempts. Otherwise, the
non-combusted fuel may damage the catalytic converter.
If the indicator/warning lamps do not light up in the instrument cluster at low temperatures, it is very likely that the discharged battery has frozen. In this case you may neither jump-start the vehicle norcharge the battery. Let the battery thaw first. The service life of a battery that has been thawed may
be reduced. The starting characteristics may be impaired, especially at low temperatures. Have the
thawed battery checked at a qualified specialist workshop.
Do not use a rapid charging device to start the vehicle. If your vehicle's battery is discharged, the
engine can be jump-started from another vehicle or from a second battery using jump leads.
Observe the following points:
R The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible, jump-
start the vehicle using a second battery or a jump-starting device.
R Vehicles with a petrol engine: jump-start the vehicle only when the engine and exhaust system
are cold.
R Do not start the engine if the battery is frozen. Let the battery thaw first.
R Jump-starting may be performed only using batteries with a nominal voltage of 12 V.
R Only use jump leads that are not damaged and have a sufficient cross-section and insulated
terminal clamps.
R Make sure that the two vehicles do not touch. 302
Jump-startingBreakdown assistance

For the correct mixing ratio, refer to the infor-
mation on the antifreeze reservoir.
i Add washer fluid concentrate, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round. Vehicle data
General notes
Please note that for the specified vehicle data:
R the heights specified may vary as a result of:
- tyres
- load
- condition of the suspension
- optional equipment
R optional equipment reduces the maximum
payload
R vehicle-specific weight information can be
found on the vehicle identification plate
(Y page 326)
R for certain countries only: you can find vehi-
cle-specific vehicle data in the COC docu-
ments (CERTIFICATE OF CONFORMITY).
These documents are delivered with your
vehicle Dimensions and weights Missing values were not available at the time of
going to print. Model
: :
Height when opened CLA 180
CLA 180 BlueEFFI-
CIENCY Edition
CLA 180 d
CLA 180 d BlueEFFI-
CIENCY Edition
1744 mm
CLA 220 (117.345)
CLA 250
CLA 250 4MATIC
CLA 250 Sport
CLA 250 Sport 4MATIC
1749 mm
Mercedes-AMG vehicles
1727 mm
All other models
1745 mm
Missing values were not available at the time of
going to print. CLA 220 (117.345)
Vehicle length
Vehicle height
Vehicle width including
exterior mirrors
Vehicle width excluding
exterior mirrors
Wheelbase
Maximum roof load
Maximum boot load
All other models
Vehicle width includ-
ing exterior mirrors
2032 mm
Vehicle width exclud-
ing exterior mirrors 1777 mm
Wheelbase
2699 mmVehicle data
333Technical data Z

Model Vehicle length
Mercedes-AMG vehi-
cles
4691 mm
All other models
4640 mm
Model Vehicle height
CLA 180
CLA 180 BlueEFFI-
CIENCY Edition
CLA 180 d
CLA 180 d BlueEFFI-
CIENCY Edition
1431 mm
CLA 250
CLA 250 4MATIC
CLA 250 Sport
CLA 250 Sport
4MATIC
1436 mm Model Vehicle height
Mercedes-AMG vehi-
cles
1416 mm
All other models
1432 mm
Model Maximum roof
load Mercedes-AMG vehi-
cles
100 kg
All sports models
100 kg
All other models
Model Maximum boot
load Mercedes-AMG vehi-
cles
100 kg
All sports models
100 kg
All other models
Trailer tow hitch
Trailer loads
Permissible trailer load, braked (at a minimum gradient-climbing capability of 8%
from a standstill) Towing a trailer is not possible with all models. For further information, see (Y
page 196).
Missing values were not available at the time of going to print. Model Manual transmission Automatic transmission
CLA 180
1500 kg 1500 kg
CLA 180 d
1500 kg 1500 kg
CLA 200
1500 kg 1500 kg
CLA 200 d
CLA 250
Model Manual transmission
CLA 180 BlueEFFICIENCY Edition
1500 kg334
Trailer tow hitchTechnical data