2014 MERCEDES-BENZ CL-Class key battery

arrow until battery tray cover
:opens. Do
no th old the cover closed while doing so. X
Remove the cover of the battery tray.
X Repeatedly tap the SmartKey against your
palm until battery =falls out.
X Insert the new battery with the positive
pole facing upwards. Use alint-free cloth to
do so.
X Make sure that the battery surface is free
of lint, grease, or other dirt.
X Insert the front tabs of the battery tray's
cover first and then press to close it.
X Replace the mechanical key in the
SmartKey.
X Check the function of all SmartKey buttons
on the vehicle. SmartKey
79Opening and closing Z

Problems with the SmartKey
Problem Possible causes/consequences and
M Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged.
X
Point the tip of the SmartKey at the driver's door handle from a
distance of approximately 1.5 ft (50 cm) and try to unlock or
lock the vehicle again.
If this does not work:
X Check the key battery and replace it if necessary (Y page 78).
X Unlock (Y page 83) or lock (Y page 83) the vehicle with the
mechanical key. The SmartKey is faulty.
X
Unlock (Y page 83) or lock (Y page 83) the vehicle with the
mechanical key.
X Have the SmartKey checked at a qualified specialist workshop. You can no longer
lock/unlock the
vehicle using KEYLESS-
GO. KEYLESS-GO is in standby mode because the vehicle has not been
unlocked for an extended period.
X
Pull the door handle twice and then insert the SmartKey into the
ignition lock. There is a malfunction with KEYLESS-GO.
X
Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the %or& button.
X Have KEYLESS-GO checked at a qualified specialist workshop. There is interference from a powerful source of radio waves.
X
Lock/unlock the vehicle using the remote control function of
the SmartKey. Point the tip of the SmartKey at the driver's door
handle from close range and press the %or& button. You have lost a
SmartKey. X
Have the SmartKey canceled at an authorized Mercedes-Benz
Center.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. 80
SmartKeyOpening and closing

Problem Possible causes/consequences and
M Solutions
The engine cannot be
started using the
SmartKey. The on-board voltage is too low.
X
Remove the SmartKey and re-insert it into the ignition lock.
X Start the engine within 30 seconds of inserting the SmartKey in
the ignition lock.
X Repeatifn ecessary.
If the engine does not start after several attempts:
X Check the starter battery and charge it if necessary .
or
X Jump-start the vehicle .
or
X Consult a qualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. Ad
oor is open. Therefore, the SmartKey cannot be detected as
easily.
X Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle with the SmartKey in the ignition lock. Doors
Important safety notes
G
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. Achild's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function. If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts. G
WARNING
Do not carry heavy or hard objects in the
passenger compartmentu nless they are
firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of:
R strong braking maneuvers
R sudden changes of direction
R an accident Doors
81Opening and closing Z

Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked.
Open the door only when the traffic
conditions permit.
If the vehicle has been opened with the
SmartKey or KEYLESS-GO key, opening from
inside triggers the anti-theft alarm system.
Switch off the alarm (Y page 70).X
Pull door handle ;.
If the door is locked, locking knob :pops
up. The door is unlocked and can be
opened.
i When a door is opened, the side window
on that side opens slightly. When the door
is closed, the side window closes again.
! The side windows will not open/close if
the battery is discharged or if the side
windows have iced up. It will then not be
possible to close the door. Do not attempt
to force the door closed. You could
otherwise damage the door or the side
window. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. This feature may be useful if,
for example, you wish to unlock the front-
passenger door from the inside or lock the
vehicle before you pull away. The locking or unlocking buttons of the
central locking do not lock or unlock the fuel
filler flap.
X
To lock: press button ;.
The vehicle locks when all front-passenger
doors are closed.
X To unlock: press button :.
You can open a locked door from inside the
vehicle. Open the door only when the traffic
conditions permit.
If the vehicle has been locked with the central
locking button:
R and the SmartKey is restored to the factory
settings, the entire vehicle is unlocked if a
door is opened from inside the vehicle.
R and the SmartKey is set to individual
settings, only the door that is opened from
inside the vehicle is unlocked.
If the vehicle has been locked centrally with
the SmartKey or with KEYLESS-GO, it does
not unlock if you use the unlocking button of
the central locking. Automatic locking feature
The vehicle locks automatically when the
ignition is switched on and the wheels of the
vehicle are moving at a speed of more than
9 mph (15 km/h). You may therefore lock
yourself out if the vehicle is being pushed,
towed, or located on a test rig.
You can switch off the automatic locking
function via COMAND . 82
DoorsOpening and closing

X
Insert the mechanical key into the trunk lid
lock as far as the stop.
X Turn the mechanical key clockwise from
position 1to position 2.
X Remove the mechanical key.
X Replace the mechanical key in the
SmartKey. Unlocking the trunk (mechanical key)
! The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
If the trunk can no longer be unlocked with
the SmartKey or KEYLESS-GO:
X Take the mechanical key out of the
SmartKey (Y page 77). X
Insert the mechanical key into trunk lid
lock :as far as the stop.
X Turn the mechanical key counter-clockwise
as far as possible.
The trunk is unlocked. X
Turn the mechanical key back and remove
it.
X Replace the mechanical key in the
SmartKey. Trunk emergency release
You can open the trunk lid from inside the
vehicle with the emergency release button. X
Briefly press emergency release
button :.
The trunk lid unlocks and opens.
The trunk lid can be unlocked and opened
with the trunk lid emergency release when
the vehicle is stationary or while driving.
Trunk lid emergency release light:
R The button flashes for 30 minutes after the
trunk lid is opened.
R The button flashes for 60 minutes after the
trunk lid is closed.
The trunk lid emergency release does not
open the trunk lid if the battery is
disconnected or discharged. Trunk
87Opening and closing Z

The system automatically switches off
approximately 20 minutes after it is set to
level
1.
X Make sure that the SmartKey is in position
1or 2in the ignition lock.
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
Problems with the seat heating The seat heating has switched itself off
prematurely. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
X Switch off electrical consumers that you do
not need, such as the rear window
defroster or interior lighting. Switching the seat ventilation on/off
Switching on/off The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
i
If the battery voltage is too low, the seat
ventilation may switch off. X
Make sure that the SmartKey is in position
2in the ignition lock.
X To switch on: press button:repeatedly
until the desired ventilation level is set. i
You can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (Y page 89). The seat
ventilation of the driver's seat
automatically switches to the highest level.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
Problems with the seat ventilation The seat ventilation has switched off
prematurely. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
X
Switch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting. Steering wheel
Important safety notes
G
WARNING
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving
could cause the driver to lose control of the
vehicle.
The electrical steering wheel adjustment
feature can be operated at any time.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. Achild's unsupervised access to a
vehicle could result in an accident and/or
serious personal injury. 102
Steering wheelSeats, steering wheel and mirrors

R
a valid and operational SI Mcard must be
inserted in the mobile phone.
R the mobile phone is connected to COMAND
via Bluetooth ®
.
If you cannot make an emergency call, you
must arrange rescue measures yourself.
X Ente rnumbers using the number keypad
(Y page 188).
X Press the 6button.
The telephone makes the connection.
X Wait for the emergency call center to
respond and then describe the emergency.
i If no SIM card has been inserted in a GSM
phone or if there is no service available for
a CDM Aphone, the NO SERVICE message
appears in COMAND. In this case, an
emergency call can only be transmitted via
the mobile phone itself and not via
COMAND. Telephony via the Bluetooth
®
interface
Conditions On the mobile phone
For telephony via COMAND's Bluetooth
®
interface, a Bluetooth ®
-capable mobile
phone is required.
i Not all mobile phones available on the
market are equally suitable. More detailed
information on suitable mobile phones and
on connecting Bluetooth ®
-capable mobile
phones with COMAND can be found on the
Internet at
http://www.mbusa-mobile.com.Orc all
the Mercedes-Ben zCustome rAssistance
Center on
1-800-FOR-MERCedes(1-800-367-6372)
(for the USA) or Customer Relations on
1-800-387-0100 (for Canada).
The battery of the mobile phone should
always be kept sufficiently charged in order
to prevent malfunctions. In preparation for telephoning via the
Bluetooth
®
interface, you should check the
following items on your mobile phone (see the
mobile phone operating instructions):
X Hands-Free Profile
The mobile phone must support Hands-
Free Profile 1.0 or above.
i Certain displays and functions (e.g. signal
strength display, conference connection)
are available, depending on the supported
version of the Hands-Free Profile.
X Bluetooth ®
visibility
On certain mobile phones, the device itself
must be made "visible" for other devices,
as well as activating the Bluetooth ®
function (see the mobile phone operating
instructions).
X Bluetooth ®
device name
Every Bluetooth ®
device has its own
Bluetooth ®
device name. This device name
is freely definable, but can be identical for
all devices from the same manufacturer. It
is therefore recommended that you change
this name so that you can easily recognize
your mobile phone (see the mobile phone
operating instructions).
X Switch on the mobile phone and enter the
PIN when prompted to do so (see the
mobile phone operating instructions).
X Activate Bluetooth ®
functions and, where
necessary, Bluetooth ®
visibility on the
mobile phone (see the mobile phone
operating instructions).
In COMAND
X Activate the Bluetooth ®
function in
COMAND (Y page 135).
Connecting amobile phone General information
Before using your mobile phone with
COMAND for the first time, you will need to
connect it. Telephone
183COMAND Z

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 29).Exterior lighting
Important safety notes
For reasons of safety, Mercedes-Benz
recommends that you drive with the lights
switched on even during the daytime. In some
countries, operation of the headlamps varies
due to legal requirements and self-imposed
obligations. Notes on driving abroad
To convert to symmetrical low beam
when driving abroad: switch the headlamps
to symmetrical low beam in countries in
which traffic drives on the opposite side of the
road from the country where the vehicle is
registered. This prevents glare to oncoming
traffic. Symmetrical lights do not illuminate
as large an area of the edge of the road.
Have the headlamps converted at a qualified
specialist workshop as close to the border as
possible before driving in these countries.
To convert to asymmetrical low beam
after returning: have the headlamps
converted back to asymmetrical low beam at
a qualified specialist workshop as soon as
possible after crossing the border and
returning to the original country. Light switch
Operation Depending on the date of manufacture of your
vehicle, the
corà symbol for the
automatic headlamp mode/daytime running
lamps is located on the light switch. 1W
Left-hand standing lamps
2X Right-hand standing lamps
3$ Lights off/daytime running lamps
4c Automatic headlamp mode/daytime
running lamps
5T Parking lamps, license plate and
instrumen tcluste rlighting
6L Low-beam/high-beam headlamps
7N Front fog lamps
8R Rear fog lamp
The tur nsignals, high-beam headlamps and
the high-beam flasher are operated using the
combination switch (Y page 252).
! Switch off the parking lamps and standing
lamps when you leave the vehicle. This
prevents the battery fro mdischarging.
The exterior lighting (except the parking/
standing lamps) switches off automatically if
you:
R remove the SmartKey fro mthe ignition lock
R open the driver's door with the SmartKey
in position 0
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on. 250
Exterior lightingLights and windshield wipers