2015 MERCEDES-BENZ CLS-Class alarm

Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's door
and the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel on your own.
X To change the setting: press and hold
down the %and& buttons on the
SmartKey simultaneously for approx-
imately six seconds until the battery check
lamp flashes twice (Y page 87).
i If the setting of the locking system is
changed within the signal range of the vehi- cle, pressing the &or% button:
R locks or
R unlocks the vehicle
The SmartKey now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner sur-
face of the door handle on the front-
passenger door or the rear door.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: press
and hold down the %and& buttons
simultaneously for approximately six sec-
onds until the battery check lamp flashes
twice (Y page 87). Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey, use the
mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered
(Y page 81).
There are several ways to turn off the alarm:
X To deactivate the alarm with the Smart-
Key: press the %or& button on the
SmartKey.
or
X Insert the SmartKey into the ignition lock.
or
X To deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the igni-
tion lock. The SmartKey must be in the
vehicle.
or
X Lock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle.
If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlocked
automatically.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key 86
SmartKeyOpening and closing

Problem
Possible causes/consequences and
M
MSolutions You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. The engine cannot be
started using the
SmartKey. the on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X Check the starter battery and charge it if necessary
(Y page 333).
or
X Jump-start the vehicle (Y page 335).
or
X Consult a qualified specialist workshop. The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. The vehicle is locked.
X Unlock the vehicle 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
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
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 or animals unattended in the vehicle. Always keep the SmartKey out of
reach of children.
You should preferably place luggage or loads in the trunk. Observe the loading guidelines
(Y page 286). Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked.
If the vehicle has previously been locked from
the outside, opening a door from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Y page 81).
You can only open the rear doors from inside
the vehicle if they are not secured by the
child-proof locks (Y page 69).90
DoorsOpening and closing

You could therefore lock yourself out if:
R the vehicle is being pushed.
R the vehicle is being towed.
R the vehicle is on a roller dynamometer.
You can also switch the automatic locking
function on and off using the on-board com-
puter (Y page 240). Unlocking the driver's door (mechan-
ical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
X Take the mechanical key out of the Smart-
Key (Y page 86).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key counter-clockwise
to position 1.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key into the Smart-
Key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered (Y page 81).Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey, use the mechanical key. X
Open the driver's door.
X Close the front-passenger door, the rear
doors and the trunk lid.
X Press the locking button (Y page 91).
X Check whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs by hand, if necessary.
X Close the driver's door.
X Take the mechanical key out of the Smart-
Key (Y page 86).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key clockwise to posi-
tion 1.
The door is unlocked.
X Turn the mechanical key back and remove
it.
X Make sure that the doors and the trunk lid
are locked.
X Insert the mechanical key into the Smart-
Key. Trunk
Important safety notes
G
WARNING
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, 92
TrunkOpening and closing

Locking the trunk separately
You can lock the trunk separately. If you then
unlock the vehicle centrally, the trunk
remains locked and cannot be opened.
X Close the trunk lid.
X Take the mechanical key out of the Smart-
Key (Y page 86). X
Insert the mechanical key into the trunk lid
lock as far as it will go.
X Turn the mechanical key clockwise from
position 1to position 2.
X Remove the mechanical key.
X Insert the mechanical key into the Smart-
Key. 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 mechani-
cal key.
If you use the mechanical key to unlock and
open the trunk lid, the anti-theft alarm system will be triggered (Y page 81).
X Take the mechanical key out of the Smart-
Key (Y page 86).
X Insert the mechanical key into the trunk lid
lock as far as it will go. X
Turn the mechanical key from position 1
counter-clockwise as far as it will go to
position 2.
The trunk is unlocked.
X Turn the mechanical key back to position
1 and remove it.
X Insert the mechanical key into the Smart-
Key. Trunk emergency release
You can open the trunk lid from inside the
vehicle with the emergency release button. X
Press emergency release button :briefly.
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.
The trunk lid emergency release does not
open the trunk lid if the battery is disconnec- ted or discharged. 96
TrunkOpening and closing

The next time you are inside the vehicle and
you switch on the ignition, the Doors
Doors
Locked Remotely
Locked Remotely message appears in the
multifunction display.
Alternatively, the vehicle can be locked via:
R the Internet, under the "Owners Online"
section
R the telephone application (e. g. for iPhone ®
,
Android)
To do this, you will need your identification
number and password.
Stolen vehicle recovery service If your vehicle has been stolen:
X Notify the police.
The police will issue a numbered incident
report.
X This number will be forwarded to the
Mercedes-Benz Customer Assistance Cen-
ter together with your PIN.
The Mercedes-Benz Customer Assistance
Center then tries to locate the system. The
Mercedes-Benz Customer Assistance Cen- ter contacts you and the local law enforce- ment agency if the vehicle is located.
However, only the law enforcement agency
is informed of the location of the vehicle.
If the anti-theft alarm system is activated for
longer than 30 seconds, the Mercedes-Benz
Customer Assistance Center is automatically notified.
Vehicle Health Check With the Vehicle Health Check, the Customer
Assistance Center can provide improved sup-
port 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 or a recovery vehicle
is called. If vehicle data needs to be transferred during
an MB Info call or a Roadside Assistance call, this is initiated by the Customer Assistance
Center.
The Roadside Assistance Connected
Roadside Assistance Connected
message appears in the display. If the Vehicle
Health Check can be started, the Request Request
for Vehicle Diagnostics Received
for Vehicle Diagnostics Received
Start vehicle diagnostics? Start vehicle diagnostics? message
appears in the display.
X Press the Yes
Yes button to confirm the mes-
sage.
X When the Vehicle Diagnostics
Vehicle Diagnostics
Please Start Ignition
Please Start Ignition message
appears: turn the SmartKey to position 2in
the ignition lock (Y page 149).
X If the Please follow the instruc‐
Please follow the instruc‐
tions received by phone and move
tions received by phone and move
your vehicle to a safe position. your vehicle to a safe position.
message appears: please follow the
instructions received by phone and move
your vehicle to a safe position.
The message in the display disappears.
The vehicle operating state check begins.
During this procedure, you will see the
Vehicle Vehicle Diagnostics
Diagnostics Active
Activemessage.
If you select Cancel
Cancel, the Vehicle Health
Check is canceled completely.
When the check is complete, the Sending
Sending
vehicle diagnostics data. (Voice
vehicle diagnostics data. (Voice
connection may be interrupted dur‐ connection may be interrupted dur‐
ing ing data
data transfer)
transfer) message appears. The
vehicle data can now be sent.
X Press the OK
OKbutton to confirm the mes-
sage.
The voice connection with the Customer
Assistance Center is terminated.
The Vehicle Diagnostics: Transfer‐ Vehicle Diagnostics: Transfer‐
ring Data...
ring Data... message appears.
The vehicle data is sent to the Customer
Assistance Center.
Depending on what the customer service rep-
resentative agreed with you, the voice con-
nection is re-established after the transfer is
complete. If necessary, you will be contacted Features
305Stowage and features Z

Triggering the vehicle alarm
With this function, you can trigger the vehi-
cle'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
General notes The HomeLink
®
garage door opener integra-
ted in the rear-view mirror allows you to oper-
ate up to three different door and gate sys-
tems.
Use the integrated garage door opener only
on garage doors that:
R have safety stop and reverse features and
R meet current U.S. federal safety standards
Once programed, the integrated garage door opener in the rear-view mirror will assume the
function of the garage door system's remote
control. Please also read the operating
instructions for the garage door system.
When programming a garage door opener,
park the vehicle outside the garage. Do not
run the engine while programming.
Certain garage door drives are incompatible
with the integrated garage door opener. If you
have difficulty programing the integrated
garage door opener, contact an authorized
Mercedes-Benz Center.
Alternatively, you can call the following tele-
phone assistance services:
R USA: Mercedes-Benz Customer Assistance
Center at 1-800-FOR-MERCedes
R Canada: Customer Service at
1-800-387-0100
R HomeLink ®
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. Notes on the declaration of conformity
(Y
page 26).
USA: FCC ID: CB2HMIHL4
Canada: IC: 279B-HMIHL4
Important safety notes G
WARNING
When you operate or program the garage door with the integrated garage door opener, per-
sons in the range of movement of the garage
door can become trapped or struck by the
garage door. There is a risk of injury.
When using the integrated garage door
opener, always make sure that nobody is
within the range of movement of the garage
door. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
Programming Programming buttons
Pay attention to the "Important safety notes"
(Y page 307). Garage door remote control
Ais not inclu-
ded with the integrated garage door opener. Features
307Stowage an d features Z