2014 MERCEDES-BENZ CLS alarm

ProblemPossible causes/consequences andSolutions
The engine cannot be
started using the
SmartKey.
The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary
(Ypage 324).
or
XJump-start the vehicle (Ypage 326).
or
XConsultaqualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
Adoor is open. Therefore, the SmartKey cannot be detected as
easily.
XClose the door and try to start the vehicle again.
There is interferencefromapowerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshiftingthe automatic transmission out of
park positionP
RStart the engine.
There isarisk of an accident and injury.
When leaving the vehicle, alwaystake 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.
GWARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there isarisk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
Unlocking and opening doors from
the inside
You can openadoor from inside the vehicle
even if it has been locked. If the vehicle has
been locked with the SmartKey or with
KEYLESS-GO, openingadoor from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Ypage 74).
You can only open the rear doors from inside
the vehicle if they are not secured by the
child-proof locks (Ypage 65).
82Doors
Opening and closing

You could therefore lock yourself out if:
Rthe vehicle is being pushed.
Rthe vehicle is being towed.
Rthe vehicle is onaroller dynamometer.
You can also switchthe automatic locking
function on and off using the on-board
computer (Ypage 232).
Unlocking thedriver'sdoor
(mechanical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
XTake the mechanical key out of the
SmartKey (Ypage 78).
XInsert the mechanical key intothe lock of
the driver's door as far as it will go.

To unlock
XTurn the mechanical key counter-clockwise
to position
.
The door is unlocked.
XTurn the mechanical key back and remove
it.
XInsert the mechanical key intothe
SmartKey.
If you use the mechanical key to unlockand
open the driver's door, the anti-theftalarm
system will be triggered(Ypage 74).
Locking thevehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey, use the mechanical key.
XOpen the driver's door.
XClose the front-passenger door, the rear
doors and the trunk lid.
XPress the locking button (Ypage 83).
XCheck whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs manually, if necessary (Ypage 82).
XClose the driver's door.
XTake the mechanical key out of the
SmartKey (Ypage 78).
XInsert the mechanical key intothe lock of
the driver's door as far as it will go.

To lock
XTurn the mechanical key clockwise as far
as it will go to position
.
XTurn the mechanical key back and remove
it.
XMake sure that the doors and the trunk lid
are locked.
XInsert the mechanical key intothe
SmartKey.
Trunk
Important safety notes
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide.Exhaust
gases can enter the vehicleinteriorifthe
trunk lidisopenwhen the engine is running,
84Trunk
Opening and closing

closing areaduring the closing process.There
isarisk of injury.
Make sure that nobody is in the vicinity of the
closing area during the closing process.
Use one of the following options to stop the
closing process:
RPress thebutton on the key.
Rpress the remote operating switch on the
driver's door.
RPress the closing or locking button on the
trunk lid.
RPull the trunk lid handle.
GWARNING
The trunk lid can be automatically opened or
closed even if the SmartKey is not in the
vehicle. If children are left unsupervised in the
vehicle, they could activate the functions.
There isarisk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is
arisk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
iOpening dimensions of the trunk lid
(Ypage 379).
Opening and closing
XTo open:pull remote operating switch for
trunk liduntil the trunk lid opens.
XTo close:press remote operating switch
for trunk liduntil the trunk lid is closed.
You can open the trunk lid from the driver's
seat when the vehicle is stationary and
unlocked.
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 cannot be unlocked with the
SmartKey or KEYLESS-GO, use the
mechanical key.
If you use the mechanical key to unlock and
open the trunk lid, the anti-theft alarm system
will be triggered (Ypage 74).
XTake the mechanical key out of the
SmartKey (Ypage 78).
XInsert the mechanical key into the trunk lid
lock as far as it will go.
Trunk87
Opening and closing
Z

Stolen vehicle recovery service
If your vehicle has been stolen:
XNotify the police.
The police will issueanumbered incident
report.
XThis number will be forwarded to the
Mercedes-Benz Customer Assistance
Center together with your PIN.
The Mercedes-Benz Customer Assistance
Center then tries to locate the system. The
Mercedes-Benz Customer Assistance
Center contacts you and the local law
enforcement agency if the vehicle is
located. However, only the law
enforcement agency is informed of the
location of the vehicle.
iIf the anti-theft alarm system is activated
for longer than 30 seconds,the Mercedes-
Benz Customer Assistance Center is
automatically informed.
Vehicle remote malfunction diagnosis
With the vehicle remote malfunction
diagnosis (Vehicle Health Check), the
Customer Assistance center can provide
improved support for problems with your
vehicle. During an existing call, vehicle data
is transferred to the Customer Assistance
center. The customer service representative
can use the received data to decide what kind
of assistance is required. You are then, for
example, guided to the nearest authorized
Mercedes-Benz Center orarecovery vehicle
is called.
If vehicle data needs to be transferred during
an MB Info call oraRoadside Assistance call,
this is initiated by the Customer Assistance
center. You will see theRoadside
Assistance Connectedmessage in the
COMAND display.Ifthe vehicle remote
malfunction diagnosis can be started, the
Request for vehicle diagnosis
received. Start vehicle diagnosis?
message appears in the display.
XConfirm the message withYes.
XWhen theVehicle Diagnosis Please
Start Ignitionmessage appears, turn
the SmartKey to position2in the ignition
lock (Ypage 147).
XWhen thePlease follow the
instructionsreceivedbyphoneand
move your vehicle toasafe
position.message appears, follow the
customer service representative's
instructions.
The message in the displaydisappears.
If you selectCancel,the vehicle remote
malfunction diagnosis is canceled
completely.
The vehicle operating state check begins.
You will see theVehicle diagnosis
activated.message.
When the diagnosis is completed, the
Transfer vehicle diagnostics data
(Voice connection may be
interrupted during data transfer.)
message appears. The vehicle data can now
be sent to the Customer Assistancecenter.
XPressOKto confirm the message.
The voice connection with the Customer
Assistancecenter is terminated.
You will see theVehicle Diagnosis:
Transferring data...message.
The vehicle data is sent to the Customer
Assistancecenter.
Depending on what the customer service
representative agreed with you, the voice
connection is re-established after the transfer
is complete. If necessary, you will be
contacted atalater time by another means,
e.g. by e-mail or phone.
Further functions of the vehicle remote
malfunction diagnosis include, for example:
Rtransfer of service data to the Customer
Assistancecenter. Ifaservice is overdue,
the COMAND display showsamessage
Features297
Stowage and features
Z

Triggeringthe vehicle alarm
With thisfunction, youcan triggerthe
vehicle's panic alarm via text message. An
alarm sounds and the exterior lighting
flashes. Depending on the setting, the panic
alarm lasts five or ten seconds. Afterwards,
the alarm switches off.
Garage door opener
Important safety notes
GWARNING
When you operate or program the garage door
with the integrated garage door opener,
persons in the range of movement of the
garage door can become trapped or struck by
the garage door. There isarisk of injury.
When using the integrated garage door
opener, always make sure that nobody is
within the rangeofmovementofthe garage
door.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbonmonoxide. Inhaling
these exhaust gases leads to poisoning. There
isarisk of fatal injury. Therefore never leave
the engine runninginenclosed spaces
without sufficient ventilation.
The HomeLink®garage door opener
integrated in the rear-view mirror allows you
to operate up to three different door and gate
systems.
Use the integrated garage door opener only
on garage doors that:
Rhave safety stop and reverse features and
Rmeet current U.S. federal safety standards
When programmingagarage door opener,
park the vehicle outside the garage.
iCertain garage door drives are
incompatible with the integrated garage
door opener. If you have difficulty
programming the integrated garage door
opener, contact an authorized Mercedes-
Benz Center.
Alternatively, you can call the following
telephone assistance services:
RUSA:Mercedes-Benz Customer
Assistance Center at
1-800-FOR-MERCedes
RCanada:Customer Serviceat
1-800-387-0100
RHomeLink®hotline 1-800-355-3515
(free of charge)
More information on HomeLink®and/or
compatible products is also available
online at http://www.homelink.com.
iNotes on the declaration of conformity
(Ypage 25).
USA:FCC ID: CB2HMIHL4
Canada: IC: 279B-HMIHL4
Programming
Programming buttons
Observe the "Important safety notes"
(Ypage 299).
Integrated garage door opener in the rear-viewmirror
Garage door remote controlis not part of
the integrated garage door opener.
XThe first time before programming, clear
the integrated garage door opener memory
(Ypage 301).
XTurn the SmartKey to position2in the
ignition lock.
Features299
Stowage and features
Z