2014 MERCEDES-BENZ E-Class CABRIOLET key battery

Setting the air distribution
X
Turn the SmartKey to position 2in the
ignition lock (Y page 165).
X Dual-zone automatic climate control: press
air distribution adjustment button 0017up or
down, until the desired symbol appears in
the display (Y page 149).
X 3-zone automatic climate control: press air
distribution adjustment button 001Bup or
down, until the desired symbol appears in
the display (Y page 151). Setting the airflow
Dual-zone automatic climate control X
Turn the SmartKey to position 2in the
ignition lock (Y page 165).
X To increase/reduce: press airflow switch
0018 up or down (Y page 149).
3-zone automatic climate control X
Turn the SmartKey to position 2in the
ignition lock (Y page 165).
X To increase/reduce: press airflow switch
001A up or down (Y page 151).
If the battery is not sufficiently charged,
blower output may be reduced. As soon as
the battery is sufficiently charged, full blower
output will be available. Switching the ZONE function on/off
X To activate: press the0003button.
The indicator lamp above the 0003button
lights up.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is not adopted for the front-passenger side
and the rear compartment.
X To deactivate: press the0003button.
The indicator lamp above the 0003button
goes out.
Dual-zone automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side.
3-zone automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side and
the rear compartment. Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
Switch off the "Windshield defrosting"
function as soon as the windshield is clear
again.
X Turn the SmartKey to position 2in the
ignition lock (Y page 165).
X To activate: press the0009button.
The indicator lamp above the 0009button
lights up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windshield and
front side windows
R air-recirculation mode off
If the battery is not sufficiently charged,
blower output may be reduced. Once the
battery is sufficiently charged again, full
blower output will be available again.
X To deactivate: press the0009button.
The indicator lamp above the 0009button
goes out. The previously selected settings
are restored. Air-recirculation mode
remains deactivated.
or 156
Operating the climate control systemsClimate control

X
Press the 0004button.
The indicator lamp above the 0009button
goes out. Airflow and air distribution are set
to automatic mode.
or
X Dual-zone automatic climate control: press
temperature selection switch 0016or001A up
or down (Y page 149).
3-zone automatic climate control: press
temperature selection switch 0017or001C up
or down (Y page 151).
or
X Dual-zone automatic climate control: press
airflow switch 0018up or down
(Y page 149).
3-zone automatic climate control: press
airflow switch 001Aup or down
(Y page 151). MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
MAX COOL is only operational when the
engine is running.
X To activate: press the0001button.
The indicator lamp in the button lights up.
X To activate: press off-road button 0001
again.
The indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate
control switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on Defrosting the windows
Windows fogged up on the inside X
Activate the 0005cooling with air
dehumidification function.
X Activate automatic mode 0004.
X Adjust the side air vents so that the warmed
air is directed to the side windows.
X If the windows continue to fog up, activate
the 0009 "Windshield defrosting" function.
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside X
Dual-zone automatic climate control: press
air distribution adjustmen tbutton 0017up or
down (Y page 149), until the 0018or
0017 symbol appears in the display.
X 3-zone automatic climate control :press air
distributio nadjustment button 001Bup or
down (Y page 151), until the 0018or
0017 symbol appears in the display.
X Adjust the side air vent sso that no air is
directed to the side windows. Rear window defroster
General notes The rear window defroster has a high current
draw. You should therefore switch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
Activating/deactivating
X
Turn the SmartKey to position 2in the
ignition lock (Y page 165).
X Press the 000Dbutton.
The indicator lamp above the 000Dbutton
lights up or goes out. Operating the climate control systems
157Climate control

Problems with the rear window defroster
Problem Possible causes/consequences and
0001 Solutions
The rear window
defroster has
deactivated
prematurely or cannot
be activated. The battery has not been sufficiently charged.
X
Switch off any consumers that are not required, e.g. reading
lamps, interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window
defroster can be activated again. Activating/deactivating air-
recirculation mode
General notes You can deactivate the flow of fresh air if
unpleasant odors are enteringt
he vehicle
from outside. The air already inside the
vehicle will then be recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in
particular at low temperatures. Only use air-
recirculation mode briefly to prevent the
windows from fogging up.
The operation of air-recirculation mode is the
same for all control panels.
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 165).
X To activate: press the0013button.
The indicator lamp above the 0013button
lights up.
i Dual-zone automatic climate control: air-
recirculation mode is automatically
activated at high outside temperatures.
3-zone automatic climate control: air-
recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures.
When air-recirculation mode is activated
automatically, the indicator lamp above the 0013
button does not light up. Outside air
is added after about 30 minutes.
X To deactivate: press the0013button.
The indicator lamp above the 0013button
goes out.
i Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately 41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡(5†) if the "Cooling
with air dehumidification" function is
activated Activating/deactivating the residual
heat function
General notes The residual heat function is only available in
vehicles for Canada with automatic climate
control.
It is possible to make use of the residual heat
of the engine to continue heating the vehicle
for approximately 30 minutes after the engine
has been switched off. The heating time
depends on the temperature that has been
set.
Coupe: optimum operation of the residual
heat function is only achieved with the side158
Operating the climate control systemsClimate control

windows and panorama roof with power tilt/
sliding panel closed.
Cabriolet: optimum operatio nofthe residual
heat function is only achieved when the soft
top is closed.
Activating/deactivating X
Turn the SmartKey to position 0in the
ignition lock or remove it (Y page 165).
X To activate: press the0002button.
The indicator lamp above the 0002button
lights up.
i If the residual heat function is activated,
the windows may fog up on the inside.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X To deactivate: press the0002button.
The indicator lamp above the 0002button
goes out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops Setting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents.T his could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air
outlets. If necessary, redirect the airflow to
another area of the vehicle interior. In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R
keep the air inlet between the windshield
and the hood free of blockages, such as ice,
snow or leaves.
R never cover the air vents or air intake grilles
in the vehicle interior. Setting the center air vents
0002
Center air vent, left
0003 Center air vent, right
0023 Center vent thumbwheel, right
0022 Center vent thumbwheel, left
X To open/close: turn thumbwheels 0023
and 0022up or down. Setting the side air vents
0002
Defroster vent
0003 Side air vent
0023 Control for side air vent Setting the air vents
159Climate control Z

Problems with the engine
Problem Possible causes/consequences and
0001 Solutions
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.
X Before attempting to start the engine again, turn the SmartKey
in the ignition back to position 0or press the Start/Stop button
repeatedly until all indicator lamps in the instrumen tcluster go
out.
X Try to start the engine again (Y page 166). 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-star tthe vehicle (Y page 334).
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. The engine is not
running 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.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it. The coolant
temperature gauge
shows a value above
248 ‡ (120 †). 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 315). Observe the warning
notes as you do so and add coolant if necessary. Driving
171Driving and parking Z

Problems with fuel and the fuel tank
Problem Possible causes/consequences and
0001 Solutions
Fuel is leaking from the
vehicle. The fuel line or the fuel tank is faulty.
G WARNING
Risk of explosion or fire.
X Turn the SmartKey to position 0in the ignition lock and remove
it immediately (Y page 165).
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The fuel filler flap
cannot be opened. The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X
Unlock the vehicle (Y page 82).
or
X Unlock the vehicle using the mechanical key (Y page 84).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
materials come into contact with parts of the
vehicle which are hot. Take particular care not
to park on dry grassland or harvested grain
fields. 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.Y ou 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 leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine.
They could also operate the vehicle's
equipment. 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. 182
ParkingDriving and parking

Display messages Possible causes/consequences and
0001 Solutions
The sof
ttop has been opened and closed several times in a row.
The soft-top drive has been switched off automatically for safety
reasons.
You can open and close the soft top again after approximately ten
minutes.
X Switch off the ignition and turn it back on.
X Repeat the opening or closing procedure (Y page 100).001C
Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Add washer fluid (Y page 315).SmartKey
Display messages Possible causes/consequences and
0001 Solutions
0001
Key Does Not
Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey. 0001
Take
Your Key from
Ignition The SmartKey is in the ignition lock.
X
Remove the SmartKey. 0001
Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. 0001
Replace
Key Battery The batteries of the KEYLESS-GO key are discharged.
X
Change the batteries (Y page 85).0001
Don't Forget Your
Key The display message is shown for a maximum of 60 seconds and
is only a reminder.
You have opened the driver's door with the engine switched off.
The KEYLESS-GO key is not in the ignition lock.
X
Remember to take the KEYLESS-GO key with you when you
leave the vehicle. 274
Display messagesOn-board computer and displays

Rear-compartment ashtray
X
To open: pull cover 0003outb y its top edge.
X To remove the insert: press release
button 0023and lift the insert up and out.
X To install the insert: install insert0002from
above into the holder and press down into
the holder until it engages. Cigarette lighter
G
WARNING
You can burn yoursel fifyou touch the hot
heating element or the socket of the cigarette
lighter.
In addition, flammable materials can ignite if:
R the hot cigarette lighter falls
R a child holds the hot cigarette lighter to
objects, for example
There is a risk of fire and injury.
Always hold the cigarette lighter by the knob.
Always make sure that the cigarette lighter is
out of reach of children. Never leave children
unsupervised in the vehicle. Your attention must always be focused on the
traffic conditions. Only use the cigarette
lighter when road and traffic conditions
permit.
X
To open: open the stowage compartment
(Y page 289).
X Press in cigarette lighter 0003.
Cigarette lighter 0003will pop out
automatically when the heating element is
red-hot.
X To close: press stowage compartment
cover 0002down until it engages. 12
Vsockets
General notes X
Turn the SmartKey to position 1in the
ignitio nlock (Y page 165).
The sockets can be used for accessories with
a maximum draw of 180 W (15 A).
Accessories include such items as lamps or
chargers for mobile phones.
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
i An emergency cut-out ensures that the
on-board voltage does not drop too low. If
the on-board voltage is too low, the power
to the sockets is automatically cut. This
ensures that there is sufficient power to
start the engine. 296
FeaturesStowage and features