2015 MERCEDES-BENZ E-CLASS CABRIOLET battery

after a cold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Hill start assist Hill start assist helps you when pulling away for-
wards 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
depress it before the vehicle begins to roll. G
WARNING
After a while, hill start assist no longer holds
the vehicle and it may 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 a
downhill gradient
R on vehicles with automatic transmission, the
transmission is in position N
R the parking brake is applied
R ESP ®
is malfunctioning ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
When pulling away again, the engine starts auto-
matically. 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
The ECO start/stop function is activated when-
ever you start the engine using the key or the
Start/Stop button.
If the ¤ symbol is shown in green in the mul-
tifunction display, the ECO start/stop function
switches the engine off automatically if the vehi- cle stops moving.
If the ECO start/stop function has been man-
ually deactivated (Y page 143) or a malfunction
has caused the system to be deactivated, the
¤ symbol is not displayed.
Automatic engine switch-off General notes
The ECO start/stop function is operational and
the ¤ symbol is displayed in green in the
multifunction display, if:
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 temperature
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently charged
R the system detects that the windscreen is not
misted up when the air-conditioning system is switched on
R the bonnet is closed
R the driver's door is closed and the driver's
seat belt is fastened
If the conditions for automatic engine switch-off
are not all fulfilled, the ¤symbol is shown in
yellow. 142
DrivingDriving and parking

i
All of the vehicle's systems remain active
when the engine is switched off automati-
cally.
i The engine can be switched off automati-
cally a maximum of four times (initial stop,
then three subsequent stops) in succession.
The ¤ symbol is shown in yellow in the
multifunction display after the engine has
been started automatically for the fourth
time. When the ¤symbol is shown in
green in the multifunction display, automatic
engine switch-off is again possible.
Vehicles with manual transmission The ECO start/stop function switches off the
engine automatically at low speeds.
X Brake the vehicle.
X Shift to neutral N(follow gearshift instruc-
tion :to engage neutral N, if necessary).
X Release the clutch pedal.
The engine is switched off automatically.
Vehicles with automatic transmission
If the vehicle is braked to a standstill with the
transmission in Dor N, the ECO start/stop func-
tion switches off the engine automatically.
i The HOLD function can be activated if the
engine has been switched off automatically. It
is then not necessary to continue applying the brakes during the automatic stop phase.
When you depress the accelerator pedal, the
engine starts automatically and the braking
effect of the HOLD function is deactivated.
Automatic engine start General notes
The engine is started automatically if:
R you switch off the ECO start/stop function by
pressing the ECO button
R you engage reverse gear R
R you unfasten your seat belt or open the driv-
er's door R
the vehicle starts to roll
R the brake system requires this
R the temperature in the vehicle interior devi-
ates from the set range
R the system detects moisture on the wind-
screen when the air-conditioning system is
switched on
R the battery's charge status is too low
Vehicles with manual transmission
! Only engage gear when the clutch pedal is
depressed.
The engine is started automatically if you:
R depress the clutch pedal fully
R depress the accelerator pedal
Vehicles with automatic transmission The engine is started automatically if you:
R release the brake pedal in transmission posi-
tion Dor Nwhen the HOLD function is not
active
R depress the accelerator pedal
R move the transmission out of position P
i Shifting the transmission to position
Pdoes
not start the engine.
i If you shift the transmission from
Rto D, the
ECO start/stop function is available again
once the ¤symbol reappears in green in
the multifunction display.
Deactivating/activating the ECO start/
stop function Driving
143Driving an d parking Z

Problems with the engine
Problem
Possible causes/consequences and
M
MSolutions The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X Deactivate the HOLD function (Y page 177) or DISTRONIC PLUS
(Y page 174).
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 key back to position 0in 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 140). Avoid excessively long
and frequent attempts to start the engine, as this will drain the
battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine does not
start. The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display shows
0. The fuel tank is empty.
X Refuel the vehicle. 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 313).
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. Vehicles with a petrol
engine:
The engine is not running
smoothly and is misfir-
ing. 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 converter
and damage it.
X Have the cause rectified immediately at a qualified specialist work-
shop. Driving
145Driving and parking Z

Problems with the fuel and fuel tank
Problem
Possible causes/consequences and
M
MSolutions Fuel is leaking from the
vehicle.
G
WARNING
The fuel line or the fuel tank is faulty.
There is a risk of fire or explosion. X Apply the electric parking brake.
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS‑GO: X Open the driver's door.
The on-board electronics now have status 0. This is the same as the
key having been removed.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The engine does not
start. The fuel tank of a vehicle with a diesel engine has been run completely
dry.
X Refuel the vehicle with at least 5 litres of diesel.
X Turn the ignition on for approximately ten seconds (Y page 139).
X Start the engine continuously for a maximum of ten seconds until it
runs smoothly.
If the engine does not start: X Turn the ignition on again for a maximum of ten seconds
(Y page 139).
X Start the engine again continuously for a maximum of ten seconds
until it runs smoothly.
If the engine does not start after three attempts:
X Consult a qualified specialist workshop. The fuel filler flap cannot
be opened. The fuel filler flap is not unlocked.
X Unlock the vehicle (Y page 74). The key battery is discharged or nearly discharged.
X Unlock the vehicle using the emergency key element (Y page 76).The fuel filler flap is unlocked, but the opening mechanism is jammed.
X Consult a qualified specialist workshop. 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-
rial can come into contact with hot vehicle
components. In particular, do not park on dry
grassland or harvested grain fields. Parking
157Driving and parking Z

Parking brake
G
WARNING
If you must brake the vehicle with the parking brake, the braking distance is considerably
longer and the wheels could lock. This increa-
ses the risk of skidding and an accident.
Only use the parking brake to brake the vehi- cle when the service brake is faulty. Do not
apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turning again. G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion if, for example, they:
R release the parking brake
R shift the automatic transmission out of park
position Por shift manual transmission into
neutral
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 key with you and lock the vehicle. Never leave
children unattended in the vehicle. The brake lights do not light up when you brake
the vehicle with the parking brake. X
To apply: depress parking brake ;firmly.
The J indicator lamp in the instrument
cluster lights up if the engine is running.
X To release: depress the brake pedal and keep
it depressed.
X Pull release handle :.
The J indicator lamp in the instrument
cluster goes out. Parking up the vehicle
If you leave the vehicle parked up for longer than
four weeks, the battery may be damaged by
exhaustive discharging.
If you leave the vehicle parked up for longer than six weeks, it may suffer from lack of use.
X Contact a qualified specialist workshop and
seek advice.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop. Driving tips
General notes
G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
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. ECO display
The ECO display provides feedback on how eco-
nomical your driving characteristics are. The Driving tips
159Driving and parking Z

ate. This is based on the current map data in the
navigation system.
Afterwards, the vehicle accelerates back to the
speed you set.
The system takes into account the fact that
overtaking on the right is not permitted on
motorways or high-speed major roads at speeds
above 80 km/h. The driving speed is adjusted to
the speed of the queue of vehicles in the adja-
cent lane to the left.
i Prevention of overtaking on the right applies
to countries where traffic drives on the right.
In countries where traffic drives on the left,
overtaking on the left is prevented accord-
ingly.
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.
Further information on deactivating DISTRONIC PLUS (Y page 174).
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 sta-
tionary and you do not need to depress the
brake.
Depending on the specified minimum distance,
your vehicle will come to a standstill at a suffi-
cient distance behind the vehicle in front. The
specified minimum distance is set using the
control on the cruise control lever. When DISTRONIC PLUS is activated, the trans-
mission is shifted automatically to position
Pif:
R the driver's door is open and the driver's seat
belt is unfastened
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function
R a system fault occurs
R the power supply is insufficient
Setting a speed X
Press the cruise control lever up :for a
higher speed or down ;for a lower speed.
X Keep the cruise control lever pressed until the
desired speed is reached.
X Release the cruise control lever.
The new speed is stored. DISTRONIC PLUS is
activated and adjusts the vehicle's speed to
the new speed stored.
X To adjust the set speed in 1 km/h incre-
ments:
briefly press the cruise control lever
up : or down ;to the pressure point.
The last stored speed increases or decreases in 1 km/h increments.
X To adjust the set speed in 10 km/h incre-
ments: briefly press the cruise control lever
up : or down ;beyond the pressure point.
The last stored speed increases or decreases in 10 km/h increments.
i If you accelerate to overtake, DISTRONIC
PLUS adjusts the vehicle's speed to the last
speed stored after you have finished overtak-
ing.
Setting the specified minimum distance You can set the specified minimum distance for
DISTRONIC PLUS by varying the time span
between one and two seconds. With this func- 172
Driving systemsDriving and parking

DISTRONIC PLUS Steering Assist does not pro-
vide assistance:
R on very sharp corners
R if a loss of tyre pressure or a defective tyre has
been detected and displayed
Pay attention also to the important safety notes
for DISTRONIC PLUS (Y page 168).
The steering interventions are carried out with a limited steering moment. The system requires
the driver to keep his hands on the steering
wheel and to steer himself.
If you do not steer yourself or if you take your
hands off the steering wheel for a prolonged
period of time, the system will first alert you with a visual warning. A steering wheel symbol
appears in the multifunction display. If you have
still not started to steer and have not taken hold
of the steering wheel after five seconds at the
latest, a warning tone also sounds to remind you to take control of the vehicle. Steering Assist
and Stop&Go Pilot switch to passive mode.
DISTRONIC PLUS remains active.
Activating Steering Assist and Stop&Go
Pilot X Activate the DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot function using the
on-board computer (Y page 222).
The DTR+: steering assistant On
DTR+: steering assistant On mes-
sage appears in the multifunction display.
Steering Assist and Stop&Go Pilot are active.
Information in the multifunction display If Steering Assist and Stop&Go Pilot are activa-
ted but not ready for a steering intervention,
steering wheel symbol :appears in grey. If the
system provides you with support by means of
steering interventions, symbol :is shown in
green. Deactivating Steering Assist and Stop&Go
Pilot
X Deactivate the DISTRONIC PLUS with Steer-
ing Assist and Stop&Go Pilot function using
the on-board computer (Y page 222).
The DTR+: steering assistant Off
DTR+: steering assistant Off mes-
sage appears in the multifunction display.
Steering Assist and Stop&Go Pilot are deac-
tivated.
When DISTRONIC PLUS is deactivated or not
available, Steering Assist and Stop&Go Pilot are deactivated automatically. HOLD function
General notes The HOLD function can assist the driver in the
following situations:
R when pulling away, especially on steep slopes
R when manoeuvring on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the driver
having to depress the brake pedal.
The braking effect is cancelled and the HOLD
function is deactivated when you depress the
accelerator pedal to pull away.
Important safety notes G
WARNING
When leaving the vehicle, it can still roll away despite being braked by the HOLD function if:
R there is a malfunction in the system or in
the voltage supply
R the HOLD function is deactivated by the
accelerator pedal being depressed, e.g. by
a vehicle occupant
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with
R the battery is disconnected
There is a risk of an accident.
Before leaving the vehicle, always deactivate
the HOLD function and secure the vehicle
from rolling away. Driving systems
177Driving and parking Z

right angles to the direction of travel. You will
need to judge whether your vehicle will fit in
the parking 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. Active Parking Assist only
displays 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 Active Parking Assist by pressing the abutton on the multifunc-
tion steering wheel. The system automatically
determines whether the parking space is paral-
lel 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 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 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:
When PARKTRONIC detects obstacles, Active Parking Assist brakes automatically during
the parking process. 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 manual transmission: shift to
reverse gear.
Vehicles with automatic transmission: shift to
position R.
The Start Park Assist? Yes: OK No:
Start Park Assist? Yes: OK 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 a button on the multifunction steering
wheel.
The Park Assist active Accelerate Park Assist active Accelerate
and brake Observe surroundings
and brake 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, Active Parking
Assist will be cancelled.
Vehicles with automatic transmission:
Active Parking Assist 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
as soon as PARKTRONIC sounds the contin-
uous warning tone, if not before.
Manoeuvring may be required in tight parking
spaces.
Vehicles with manual transmission: the
Park Assist active Engage forward Park Assist active Engage forward
gear Observe surroundings gear Observe surroundings message
appears in the multifunction display
Vehicles with automatic transmission: the
Park Assist active Select D Observe Park Assist active Select D Observe
surroundings surroundings message appears in the multi-
function display
X Vehicles with manual transmission: shift
to first gear while the vehicle is stationary.
Vehicles with automatic transmission:
select transmission position Dwhile the vehi-
cle is stationary.
Active Parking Assist immediately steers in
the other direction. Driving systems
185Driving and parking Z