2012 MERCEDES-BENZ CLS-Class C switch

ProblemPossible causes/consequences and M Solutions?
The red coolant
warning lamp lights up
while the engine is
running and the coolant
temperature gauge is
at the start of the scale.The temperature sensor for the coolant temperature gauge is
defective.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.XEngage the parking brake.XConsult a qualified specialist workshop.Warning and indicator lamps in the instrument cluster249On-board computer and displaysZ

ProblemPossible causes/consequences and M Solutions?
The red coolant
warning lamp comes on
while the engine is
running.The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator
may be blocked or the electric engine radiator fan may be
malfunctioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.XObserve the additional display messages in the multifunction
display.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XAllow the engine and coolant to cool.XCheck the coolant level and add coolant (Y page 282). Observe
the warning notes.XIf you need to add coolant more often than usual, have the
engine coolant system checked.XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.XAt coolant temperatures under 248 ‡ (120 †), drive to the next
qualified specialist workshop.XAvoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.?
The red coolant
warning lamp comes on
while the engine is
running. A warning tone
also sounds.The coolant temperature has exceeded 248 ‡ (120 †). The
airflow to the engine radiator may be blocked or the coolant level
may be too low.
The engine is not being cooled sufficiently and may be damaged.XObserve the additional display messages in the multifunction
display.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XAllow the engine and coolant to cool.XCheck the coolant level and add coolant (Y page 282). Observe
the warning notes.XIf you need to add coolant more often than usual, have the
engine coolant system checked.XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.XAt coolant temperatures under 248 ‡ (120 †), drive to the next
qualified specialist workshop.XAvoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.250Warning and indicator lamps in the instrument clusterOn-board computer and displays

Make sure any children traveling with you do
not injure themselves or start a fire with the
hot cigarette lighter.
All vehicles (except AMG)
XTurn the SmartKey to position 2 in the
ignition lock.XTo open: slide cover : forwards until it
engages.XPress in cigarette lighter ;.
Cigarette lighter ; will pop out
automatically when the heating element is
red-hot.
AMG vehicles
XTo open: press on trim :.
The stowage compartment opens.
You can now see the cigarette lighter.XPress in cigarette lighter.
The cigarette lighter will pop out
automatically when the heating element is
red-hot.12 V sockets
Points to observe before use
! If you are using all sockets in the vehicle,
make sure that you do not exceed the
maximum current draw of 55 A. Otherwise,
you will overload the fuses.
The sockets can be used for accessories, e.g.
lamps or mobile phone chargers with a
maximum current draw of 180 W (15 A).
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
XTurn the SmartKey to position 1 in the
ignition lock.
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.
Socket under the armrest
XOpen the stowage space under the armrest
( Y page 257).XLift up the cover of socket :.
On vehicles without ashtrays or lighters, there
is an additional socket in the center console.
266FeaturesStowing and features

If you have questions about the activation,
contact one of the following telephone
assistance services:
R USA: Mercedes-Benz Customer
Assistance Center under
1-800-FOR-MERCedes
(1-800-367-6372) or 1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
Shortly after successfully registering with the
mbrace service, a user ID and password will
be sent to you by post. You can use this
password to log in to the mbrace section
under "Owners Online" at http://
www.mbusa.com 18
.
The mbrace system is available if:
R it has been activated and is operational.
R the corresponding mobile phone network
is available for transmitting data to the
Customer Center.
R a service subscription is available.
R the starter battery is sufficiently charged.
i Determining the location of the vehicle on
a map is only possible if there is sufficient
GPS reception and the vehicle position can
be forwarded to the Customer Center.
The mbrace system
The mbrace system provides different
services, e.g.:
R automatic and manual emergency call
R Roadside Assistance call
R MB Info call
To adjust the volume during an mbrace call,
proceed as follows:
XPress the W or X button on the
multifunction steering wheel.
or
XUse the volume controller of the audio
system/COMAND.You can find further information and a
description of all available features under
"Owners Online" at http://
www.mbusa.com 19
.
System self-test
After you have switched on the ignition, the
system carries out a self-diagnosis.
GWARNING
A malfunction in the system has been
detected if one of the following conditions
occurs:
R the indicator lamp in the SOS button does
not light up during the system self-
diagnosis.
R the indicator lamp in the F Roadside
Assistance button does not light up during
the system self-diagnosis.
R The indicator lamp in the ï information
button does not light up during self-
diagnosis of the system.
R the indicator lamp in the SOS button,
F Roadside Assistance button or ï
information button continues to be lit red
after the system self-diagnosis.
R The Tele Aid Inoperative or Tele Aid
Not Activated message appears in the
multifunction display after the system self-
test.
If a malfunction is indicated as outlined above,
the system may not operate as expected. In
the event of an emergency, assistance must
be summoned by other means.
Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
R USA: Mercedes-Benz Customer Assistance
Center under
1-800-FOR-MERCedes(1-800-367-6372)
or 1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
18 USA only.
19 USA only.268FeaturesStowing and features

Downloading destinations
iInformation on the components and
operating principles of COMAND can be
found in the separate COMAND operating
instructions.
i You can only use the Destination
Download function if the vehicle is
equipped with a navigation system.
Destination Download gives you access to a
database with over 15 million points of
interest (POIs)/important destinations that
can be downloaded onto the navigation
system of your vehicle. If you know the
destination, you can download the address or
obtain the location of points of interest
(POIs)/important destinations in the
surrounding area.
You are prompted to confirm route guidance
to the address entered.
XSelect Yes with the = or ; buttons
on COMAND.XPress the 9 button on COMAND to
confirm.
The system calculates the route and
subsequently starts the route guidance with
the address entered.
i If you select No, the address can be stored
in the address book.
i The Destination Download function is
available if the corresponding mobile
phone network is available and data
transfer is possible.
Route Assistance
This service is part of the mbrace PLUS
Package and cannot be purchased
separately.
i You can also use the Route Assistance
function if your vehicle is not equipped with
a navigation system.
Within the framework of this service, you
receive a professional and reliable form of
navigation support without having to leave
your vehicle.
The customer service representative
determines a suitable driving route based on
your current vehicle position and the desired
destination and guides you live through the
current sections of the route.
Search & Send
"Search & Send" is a destination entry
service. You can find further information on
"Search & Send" in the separate COMAND
operating instructions.
Vehicle remote opening
If you have unintentionally locked your
vehicle (e.g. the SmartKey is still in the
vehicle) and a replacement SmartKey is not
available, the vehicle can be opened by a
Mercedes-Benz Customer Assistance Center.
The vehicle can be opened remotely up to four
days after the ignition was last switched off.
XContact the following service hotlines:
R USA: Mercedes-Benz Customer
Assistance Center under 1-800-FOR-
MERCedes(1-800-367-6372) or
1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
You will be asked for your password.XReturn to your vehicle at the time agreed
upon with the Mercedes-Benz Customer
Assistance Center.XPull the trunk lid handle for at least 20
seconds until the indicator lamp in the SOS
button ( Y page 269) flashes.
The Connecting Call message appears
on the multifunction display.
Alternatively, the vehicle can also be opened
via the Internet or an iPhone in the "Owners
Online" section using your ID number and
password 21
.
21 USA only.272FeaturesStowing and features

iVehicle remote unlocking is only possible
if the corresponding mobile phone network
is accessible.
The SOS button flashes and the
Connecting Call message appears in the
multifunction display to confirm that the
command for vehicle remote unlocking has
been received.
If you pull the trunk handle for more than
20 seconds before receiving authorization
for remote unlocking, you must wait 15
minutes before you can pull the trunk lid
handle again.
Vehicle remote closing
If you forget to lock your vehicle but are no
longer in the vicinity of the vehicle, it can be
locked for you by the Mercedes-Benz
Customer Assistance Center.
The vehicle can be locked remotely up to four
days after the ignition was last switched off.
XContact the following service hotlines:
R USA: Mercedes-Benz Customer
Assistance Center under 1-800-FOR-
MERCedes(1-800-367-6372) or
1-888-990-9007
R Canada: Customer Service at
1-888-923-8367
You will be asked for your PIN.
The next time you are in your vehicle and
switch on the ignition, the Tele Aid: Doors
Locked by Remote message appears in the
multifunction display.
Alternatively, the vehicle can also be locked
via the Internet or an iPhone in the "Owners
Online" section using your ID number and
password.
i The vehicle valet locking feature is
available when the relevant mobile phone
network is available and data connection is
possible.
Service for recovering a stolen vehicle
If your vehicle has been stolen:
XNotify the police.
The police will issue a numbered 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 attempts to locate the mbrace
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.
i If the anti-theft alarm system is active for
longer than 30 seconds, mbrace
automatically informs the Mercedes-Benz
Customer Assistance Center.
Garage door opener
Important safety notes
The HomeLink ®
garage door opener
integrated in the rear-view mirror allows you
to operate up to three different door and gate
systems.
i Certain garage door openers are not
compatible with the integrated remote
control. If you are having difficulties with
programming the integrated remote
control, contact an authorized Mercedes-
Benz Center or call the following telephone
assistance services:
R USA: Mercedes-Benz Customer
Assistance Center under
1-800-FOR-MERCedes
R Canada: Customer Service under
1-800-387-0100
GWARNING
Before programming the integrated remote
control to a garage door opener or gate
Features273Stowing and featuresZ

XPress and hold button =(Y page 277) for
approximately three seconds.
The currently selected zone appears in
compass display ;(Y page 277).XTo select the zone: press
button =(Y page 277) repeatedly until the
desired zone is selected.
The zone has been selected when compass
display ;(Y page 277) shows the heading.
This takes a few seconds.
Calibrating the compass
XMake sure that there is sufficient space for
you to drive in a circle without impeding the
remaining traffic.
In order to calibrate the compass correctly,
observe the following points:
R calibrate the compass in the open and not
in the vicinity of steel constructions or high-
voltage transmission lines.
R switch off electrical consumers, for
example, the climate control, windshield
wipers or rear window defroster.
R close all doors and the trunk lid.
XSwitch the ignition on.XPress and hold button =(Y page 277) for
approximately six seconds until the
C symbol appears in compass display ;
( Y page 277).XDrive a full circle at approximately 3 mph
(5 km/h) to 6 mph (10 km/h).
Once the calibration has been successfully
completed, the current direction appears in
compass display ;(Y page 277).
Floormat on the driver's side
GWARNING
Whenever you are using a floormat, make sure
there is enough clearance and that the
floormat is securely fastened.
The floormat should always be securely
fastened using the fastening equipment.
Before driving off, check that the floormat is
securely in place and adjust it if necessary. A
loose floormat could slip and hinder proper
functioning of the pedals.
Do not place several floormats on top of each
other as this may impair pedal movement.XSlide the seat backwards.XTo install: place the floormat in the
footwell.XPress studs : onto retainers ;.XTo remove: pull the floormat off
retainers ;.XRemove the floormat.278FeaturesStowing and features

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 22).
Engine compartment
Hood
Opening the hood
GWARNING
Do not pull the release lever while the vehicle
is in motion. Otherwise, the hood could be
forced open by passing air flow.
This could cause the hood to come loose and
injure you and/or others.
GWARNING
Do not open the hood when the engine is
overheated. You could be seriously injured.
Observe the coolant temperature gauge to
determine whether the engine may be
overheated. If you see flames or smoke
coming from the engine compartment, move
away from the vehicle. Wait until the engine
has cooled. If necessary, call the fire
department.
GWARNING
There is a risk of injury if the hood is open,
even if the engine is not running.
Some engine components can become very
hot.
To avoid the risk of burns, only touch those
components described in the Operator's
Manual and observe the relevant safety notes.
GWARNING
To help prevent personal injury, stay clear of
moving parts when the hood is open and the
engine is running.
The radiator fan may continue to run for
approximately 30 seconds or may even
restart after the engine has been turned off.
Stay clear of fan blades.
GWARNING
The engine is equipped with a transistorized
ignition system. Because of the high voltage,
it is dangerous to touch any components
(ignition coils, spark plug sockets, diagnostic
socket) of the ignition system:
R with the engine running
R while starting the engine
R when the ignition is switched on and the
engine is turned manually
XMake sure that the windshield wipers are
switched off.GWARNING
The windshield wipers and wiper linkage
could be set in motion.
When the hood is open, you or others could
be injured by the wiper linkage.
Make sure that the windshield wipers are
switched off. Remove the SmartKey or make
sure that no ignition position has been
selected with KEYLESS-GO. All indicator
lamps must be off in the instrument cluster.
280Engine compartmentMaintenance and care