2016 MERCEDES-BENZ CLA start stop button

General notes
C
ECO start/stop display
The ECO start/stop function is activated
whenever you start the engine using the
SmartKey or the Start/Stop button.
If the engine has been switched off automat-
ically by the ECO start/stop function, the

Deactivating or activating th e ECO
start/stop function X
To deactivate : press EC O butto n C .
Indicator lamp D goe s out .X
To activate : press EC O butto n C .
Indicator lamp D lights up.
If th e indicator lamp on th e EC O butto n is off,
th e EC O start/sto p function has been deac -
tivated manually or as th e result of a mal-
function .
AMG performance exhaust syste m
(Mercedes-AMG vehicles )
You can choos e between differen t AM G Per -
formanc e exhaus t system volume s usin g th e
position of th e exhaus t flap .
Each time you start th e engin e wit h th e
SmartKey or th e Start/Sto p button, th e qui-
etest setting is activated. Settin g th e volume : X
Press th e C button.
If you selec t th e loudest setting , indicator
lamp D lights up.
The volume of th e AM G Performanc e exhaus t
system can also be set usin g th e DYNAMI C
SELECT controller ( Y
page 156).
Driving 153
Driving and parking Z

Problems with the engine Problem
Possible causes/consequences and P Solutions
The engine does not
start. The HOLD function or DISTRONIC PLUS is activated. X
Deactivate the HOLD function ( Y
page 187) or DISTRONIC
PLUS ( Y
page 180). X
Try to start the engine again.
The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics. R
There is a malfunction in the fuel supply.
Before attempting to start the engine again: X
Turn the SmartKey back to position 0 in the ignition lock.
or X
Press the Start/Stop button repeatedly until all indicator lamps
in the instrument cluster go out. X
Try to start the engine again ( Y
page 149). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts: X
Consult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged. X
Jump-start the vehicle ( Y
page 319).
If the engine does not start despite attempts to jump-start it: X
Consult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high. X
Allow the starter motor to cool down for approximately two
minutes. X
Try to start the engine again.
If the engine still does not start: X
Consult a qualified specialist workshop.154
Driving
Driving and parking

Problem
Possible causes/consequences and P Solutions
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 299). Observe the warning
notes as you do so and add coolant if necessary.
DYNAMIC SELECT button (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change
the drive program. Depending on the drive
program selected the following vehicle char-
acteristics will change: R
the drive (engine and transmission man-
agement) R
the suspension (vehicles with damping sys-
tem or AMG adaptive sport suspension sys-
tem) R
the steering R
the availability of the ECO start/stop func-
tion R
the climate control:
Each time you start the engine with the
SmartKey or the Start/Stop button, drive pro-
gram C is activated. For further information
about starting the engine, see ( Y
page 149). X
Press DYNAMIC SELECT button C as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display. After five seconds
the display goes out and the status icon of
the selected drive program appears.
In addition, the current drive program set-
tings are displayed briefly in the Audio 20 or
COMAND display.
i In a few countries, the ECO start/stop
function is deactivated at the factory due to
the available fuel grade. In this case, the
ECO start/stop function is not available in
any drive program, regardless of the display
in the Audio 20 or COMAND display.DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles) 155
Driving and parking Z

When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. X
If the transmission is in position D or R :
push the DIRECT SELECT lever up or down
to the first point of resistance. X
If the transmission is in position P : depress
the brake pedal and push the DIRECT
SELECT lever up or down to the first point of
resistance.
If you switch the engine off with the trans-
mission in position R or D , the automatic
transmission shifts to N automatically.
With the SmartKey: if you then open the
driver's door or the front-passenger door or
remove the SmartKey from the ignition, the
automatic transmission shifts to P automati-
cally.
With the Start/Stop button: if you then
open the driver's door or the front-passenger
door, the automatic transmission shifts to P
automatically.
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:
Using the SmartKey: X
Switch on the ignition. 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 Smart-
Key in the ignition lock.
With the Start/Stop button: X
Remove the Start/Stop button from the
ignition lock. X
Insert the SmartKey into the ignition lock. X
Switch on the ignition. 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 Smart-
Key in the ignition lock.
Engaging drive position D X
If the transmission is in position R or N :
push the DIRECT SELECT lever down past
the first point of resistance. X
If the transmission is in position P : depress
the brake pedal and push the DIRECT
SELECT lever down past the first point of
resistance.
Selector lever (Mercedes-AMG vehi-
cles)
Overview of transmission positions
]
Park position with parking lock ^
Reverse gear \\
Neutral [
Drive
Transmission position and drive pro-
gram display
The current transmission position and drive
program appear in the multifunction display.Automatic transmission 159
Driving and parking Z

C
Transmission position displayD
Drive program display
If the transmission position display in the mul-
tifunction display is not working, you should
pull away carefully to check whether the
desired transmission position is engaged.
Ideally, you should select transmission posi-
tion D and drive program C or S .
Engaging park position P
X
When the vehicle is stationary, press but-
ton C . Transmission positions E Park position
This prevents the vehicle from roll-
ing away when stopped.
Only shift the transmission into
position P when the vehicle is sta-
tionary ( Y
page 157). The parking
lock should not be used as a brake
when parking. Always apply the
electronic parking brake in addi-
tion to the parking lock in order to
secure the vehicle.
If the vehicle electronics are mal-
functioning, the transmission may
be locked in position P . Have the
vehicle electronics checked imme-
diately at a qualified specialist
workshop.
Park position P is automatically
engaged if: R
you switch off the engine using
the SmartKey and remove the
SmartKey R
you switch off the engine using
the SmartKey or using the Start/
Stop button and open the driv-
er's door or front-passenger
door R
the driver's door is opened when
the vehicle is stationary or driv-
ing at very low speed and the
transmission is in position D or R
F Reverse gear
Only shift the transmission into
position R when the vehicle is sta-
tionary.160
Automatic transmission
Driving and parking

R
the fuel consumption possibly being higher
as a result of the later automatic transmis-
sion shift points. R
the suspension exhibits particularly stiff
springing and damping settings (vehicles
with AMG adaptive sport suspension sys-
tem). R
gliding mode is not available. R
the ECO start/stop function is not availa-
ble.
Manual gear shifting
General notes You can change gear yourself using the steer-
ing wheel paddle shifters. The transmission
must be in position D .
Depending on which paddle shifter is pulled,
the automatic transmission immediately
shifts into the next gear down or up, if per-
mitted.
Mercedes-AMG vehicles: to use manual
shifting, you have two options: R
temporary setting R
permanent setting
If you activate manual gearshifting, the mul-
tifunction display will show the current gear
instead of transmission position D .
If manual gearshifting is deactivated, the
gears will be selected automatically.
Temporary setting X
To activate: shift the DIRECT SELECT lever
to position D . X
Pull steering wheel paddle shifter C or D .
Temporary setting will be active for a certain
amount of time. Under certain conditions the
minimum amount of time is extended, e.g. in
the case of lateral acceleration, during an
overrun phase or when driving on steep ter-
rain. X
To deactivate: pull steering wheel paddle
shifter D and hold it in place.
or X
Use the DIRECT SELECT lever to switch the
transmission position.
or X
All vehicles (except Mercedes-AMG vehi-
cles): use the DYNAMIC SELECT button to
change the drive program.
Mercedes-AMG vehicles: use the DYNAMIC
SELECT controller to change the drive pro-
gram.
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.164
Automatic transmission
Driving an d parking

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.
Vehicles with automatic transmission X
Apply the electric parking brake. X
All vehicles (except Mercedes-AMG
vehicles): shift the transmission to posi-
tion P .
X
Mercedes-AMG vehicles: press but-
ton 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 147).
The engine stops and all the indicator
lamps in the instrument cluster go out.
When the driver's door is closed, this cor-
responds to SmartKey position 1 . When the
driver's door is open, this corresponds to
SmartKey position 0 : "SmartKey removed". If you switch the engine off with the trans-
mission in position R or D , the automatic
transmission shifts to N automatically.
With the SmartKey: if you then open the
driver's door or the front-passenger door or
remove the SmartKey from the ignition, the
automatic transmission shifts to P automati-
cally.
With the Start/Stop button: if you then
open the driver's door or the front-passenger
door, the automatic transmission shifts to P
automatically.
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:
Using the SmartKey: X
Switch on the ignition. 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 Smart-
Key in the ignition lock.
With the Start/Stop button: X
Remove the Start/Stop button from the
ignition lock. X
Insert the SmartKey into the ignition lock. X
Switch on the ignition. 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 Smart-
Key in the ignition lock.
If you attempt to turn off the engine when the
selector lever is not in position P :R
a message appears in the multifunction dis-
play R
a warning signal sounds170
Parking
Driving and parking