2013 MERCEDES-BENZ SL-CLASS ROADSTER ECU

Problem Possible 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.
X
Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Y page 154).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 498).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the coolant temperature is
under 248

‡ (120 †). Otherwise, the engine could be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid 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.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not
drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Y page 154).264
Warning and indicator lamps
On-board computer and displays

Tires
Problem Possible causes/consequences and
M Solutions
h
USA only:
The
yellow

tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
Canada only:
The yellow tire pressure
monitor warning lamp
(pressure loss) is lit. The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
G WARNING
With tire pressures which are too low, there is a risk of the
following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may

wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay

attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Y page 154).
X Observe the additional display messages in the multifunction
display.
X If there is a flat tire, inspect the tires ( Y page 509).
X Check the tire pressure (Y page 534).
X If necessary, correct the tire pressure. h
USA only:
The
yellow

tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit. The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire
pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Visit a qualified specialist workshop.266
Warning and indicator lamps
On-board computer and displays

Problem Possible causes/consequences and
M SolutionsCOMAND asks for an
activation code during
the map update. The digital map is secured with an activation code.
X
Consult an authorized Mercedes-Benz Center. Telephone
General notes
Introduction COMAND provides telephony via the
Bluetooth
®
interface.
When connecting
Bluetooth®
-capable mobile
phones with PBAP (Phone Book Access
Profile), the contacts are automatically
downloaded to COMAND.
With a suitable mobile phone, you can use the
hands-free system and receive vCards via the
Bluetooth ®
interface.
You can use the text message function
(receiving and reading) if the mobile phone
supports the MAP (Message Access Profile)
Bluetooth ®
profile.
Further information on suitable mobile
phones and on connecting Bluetooth ®
-
capable mobile phones to COMAND can be
found on the Internet at
http://www.mbusa-mobile.com. Or call
the Mercedes-Benz Customer Assistance
Center on
1-800-FOR-MERCedes(1-800-367-6372) for
the USA or on 1-800-387-0100 for Canada.
Safety notes G
WARNING
The driver must always concentrate on the
road. For

your safety and the safety of others,
we recommend that you pull over to a safe
location and stop before placing or taking a
telephone call. If you choose to use the mobile
phone while driving, please use the hands-
free device and only use the mobile phone when weather, road and traffic conditions
permit.
Some jurisdictions prohibit the driver from
using a mobile phone while driving a vehicle.
Bear in mind that at a speed of only 30 mph
(approximately
50 km/h

), the vehicle covers
a distance of 44 feet (approximately 14 m) per
second. G
WARNING
Excessive electromagnetic radiation may
constitute a health hazard to yourself and
others.
There is

scientific discussion surrounding the
possible health risks posed by
electromagnetic fields. You can reduce this
risk by using an exterior aerial.
Therefore, only use mobile communication
equipment if it is connected to the exterior
aerial of the vehicle.
Call disconnection while the vehicle is
in motion A call may be disconnected if:
R
there is insufficient network coverage in
certain areas.
R you move from one transmitter/receiver
area (cell)

into another and no channels are
free.
R you use a SIM card which is not compatible
with the network available.
Operating options You can operate the telephone by:
R
using the COMAND controller:
Turn cVd Telephone
357
COMAND Z

i
Mercedes-Benz recommends de-
authorization in COMAND and on the
mobile phone ( Y page 362). Subsequent
authorization may otherwise fail.
X To enter a passkey in COMAND: press
the number keys in turn.
or
X Select the digits in the digit bar one by one
by turning cVd the COMAND controller
and pressing W to confirm.
¬ is highlighted after the first number
has been entered.
X In both cases, select ¬ and press W to
confirm.
X To enter the passkey on the mobile
phone: if the Bluetooth ®
connection is
successful, you will be requested to enter
the passkey

(access code, passkey; see the
mobile phone operating instructions).
X Enter the same passkey in the mobile
phone as the one already entered in
COMAND.
The message Connecting Bluetooth
Profiles... appears.
The Authorization successful
message appears once authorization is
completed.
The mobile phone is authorized and
connected to COMAND. You can now make
phone calls using the COMAND hands-free
system.
i After entering the passkey, you may also
need to

enter a confirmation in your mobile
phone to connect calls. Please check your
mobile phone display. On some mobile
phones, this confirmation can be saved. In
this case, you do not need to enter it again.
If the COMAND display shows the
Authorization failed message, you
may have exceeded the prescribed time
period. Repeat the procedure. Option 2: use Secure Simple Pairing
The mobile phone (or the Bluetooth
®
audio
device) must support the Bluetooth ®
version
2.1 for

connection via Secure Simple Pairing.
COMAND creates a six-digit code, which is
displayed on both devices that are to be
connected.
X If the code is the same on both devices,
confirm Yes by pressing W.
If you

select Yes, authorization is continued
and the mobile phone is connected.
If you select No, the process will be
canceled.
X Confirm the message on the mobile phone.
External authorization If COMAND does not detect your mobile
phone,
this

may be due to particular security
settings on your mobile phone. In this case,
you can test if your mobile phone can find
COMAND. The Bluetooth ®
device name of
COMAND is "MB Bluetooth".
Please note the following: some mobile
phones require that you establish the Telephone
361
COMAND Z

connection to COMAND again once you have
entered the passkey (see the mobile phone
operating instructions). The mobile phone
cannot otherwise be authorized.
X
Press the % function button on
COMAND.
X Select Connect Device in the telephone
basic menu by sliding VÆ and turning
cVd the COMAND controller and press
W to confirm.
The Bluetooth ®
phone list appears
(Y page 359).
X Select Connect via Phone and press the
W button to confirm.
The message on the left appears.
X Start the Bluetooth ®
search on the mobile
phone; see the mobile phone operating
instructions.
X Select COMAND ( MB Bluetooth) on the
mobile phone.
X Option 1: when requested to do so, enter
the passkey first on the mobile phone and
then in COMAND.
X Option 2: confirm the displayed codes on
the mobile phone and in COMAND (Secure
Simple Pairing).
With both options, you see the prompt Do
you want to be
authorized? on the COMAND display.
X If you select Yes, the mobile phone will be
authorized. The messages Waiting for
a Connection to dev.> and Connecting Bluetooth
Profiles... are displayed. If the
connection is successful, you see the
telephone basic menu and the connected
mobile phone is entered.
If you select No, the process will be
canceled.
Switching between mobile phones
If you have authorized more than one mobile
phone, you

can switch between the individual
phones. X
Select the mobile phone in the Bluetooth ®
telephones list by turning cVd the
COMAND controller and press W to
confirm.
The selected mobile phone is searched for
and connected if it is within Bluetooth ®
range and if Bluetooth ®
is activated.
Only one mobile phone can be connected
at any one time. The currently connected
mobile phone is indicated by the # dot in
the Bluetooth ®
telephones list.
i You can

only switch to another authorized
mobile phone if you are not currently
making a call.
De-authorizing (de-registering) a mobile
phone
Mercedes-Benz USA, LLC recommends de-
authorization in COMAND and on the mobile
phone. Subsequent authorization may
otherwise fail.
X Press the % function button on
COMAND.
X Select Connect Device in the telephone
basic menu by sliding VÆ and turning
cVd the COMAND controller and press
W to confirm.
The Bluetooth ®
phone list appears
(Y page 359).
X Select the desired mobile phone in the
Bluetooth ®
telephones list.
X Select the list symbol to the right of the
entry by sliding VY the COMAND
controller and press W to confirm.
X Select De-authorize and press W to
confirm.
A prompt appears asking whether you
really wish to de-authorize this device.
X Select Yes or No.
If you

select Yes, the device will be deleted
from the Bluetooth ®
telephones list.
If you select No, the process will be
canceled. 362
Telephone
COMAND

X
To exit the menu: press the V eject/
load button again or press the % back
button.
or
X Select Back by sliding VÆ and turning
cVd the COMAND controller and press
W to confirm.
Inserting and ejecting an SD memory
card General information
COMAND supports SD memory cards
(Secure Digital) and SDHC memory cards
(Secure Digital
High Capacity).
i Not all memory cards available on the
market are designed for the temperatures
which may be reached in the vehicle.
If the SD memory card is no longer in use,
you should remove it from COMAND. High
temperatures can damage the card.
Due
to the wide range of SD memory cards
available on the market, playback cannot
be guaranteed for all brands of SD memory
card.
The readable storage capacity depends on
the memory card used. You can obtain
further information at any authorized
Mercedes-Benz Center.
Inserting an SD memory card
X Insert the memory card into the slot on the
control panel until it engages in place. The
side with the contacts must face
downwards and point towards the slot.
COMAND loads the memory card and
shows a message to this effect. If no MP3
tracks can

be found, you will see a message
to this effect.
Ejecting an SD memory card
X Press the memory card.
The memory card is ejected.
X Remove the memory card from slot. Connecting a USB device The USB port is located in the stowage
compartment in the center console.
Electrical consumption at this connection
must not exceed a continuous current of
500 mA
. If the electrical consumption is
higher, use a separate source to provide
power for the USB device (e.g.
12 V power supply

).
X Connect the USB device (e.g. USB stick) to
the USB port.
i Due to the wide range of USB devices
available on the market, playback cannot
be guaranteed

for all brands of USB device.
Information about suitable USB devices
can be obtained from an authorized
Mercedes-Benz Center.
MP3 players must support Media Transfer
Protocol (MTP).
Activating audio CD/DVD or MP3 mode Automatic switching
X
Insert/eject CDs/DVDs (Y page 421)
or
X Insert an SD memory card (Y page 424)
or
X Connect a USB device ( Y page 424).
COMAND loads the medium inserted and
starts to play it.
Switching modes using the function
button
X Press the h
function
button one or more
times.
i By pressing the function button
repeatedly, you can change the operating
mode in the following order:
R audio CD/DVD/video DVD/MP3 CD/
MP3 DVD in the DVD changer or single
DVD drive (disc mode)
R memory card mode
R MUSIC REGISTER424
Audio
COMAND

X
Select a track and press W to confirm.
Playback starts and the basic display
appears. MUSIC REGISTER
General notes !
Retain the
original music files in a secure
location. An error in COMAND might result
in the loss of the music files stored in the
MUSIC REGISTER. Mercedes-Benz is not
liable for any loss of data.
You can store music files in a compressed
format in the MUSIC REGISTER
(Y page 437). The memory has a capacity of
10 GB.
Switching to MUSIC REGISTER MUSIC REGISTER basic display
Example: MUSIC REGISTER
:
Cover (if available)
; Track time =
Track number and name
? Graphic time and track display
A Position of the medium in the media list
and name

of the medium, followed by the
current playback option (no display for
Normal Track Sequence)
B Artist
C MUSIC REGISTER menu bar
Option 1
X Press the h function button repeatedly
until the MUSIC REGISTER is switched on.
By pressing the function button repeatedly,
you can change the operating mode in the
following order:
R audio CD/DVD/MP3 (disc)
R memory card mode
R MUSIC REGISTER
R USB storage device
R Media Interface or audio AUX mode
R Bluetooth ®
audio mode
If music

files are available, playback begins at
the point last listened to.
If there are no music files, you will see a
message to this effect.
X Confirm the message by pressing W the
COMAND controller and copy the music
files ( Y page 437).
Option 2
X Select Audio in the main function bar by
sliding ZV and

turning cVd the COMAND
controller and press W to confirm.
If MUSIC REGISTER was the last mode
selected, it is now switched on.
If another audio source is switched on, you
can now switch on the MUSIC REGISTER in
the audio menu.
X Select Audio by sliding ZV and turning
cVd the COMAND controller and press
W to confirm.
The audio menu appears. 436
Audio
COMAND

The Bluetooth
®
device list displays all
authorized devices, whether they are within
range or not. After a device search, devices
which are
within range but not authorized are
also displayed.
X Switch on Bluetooth ®
audio mode
(Y page 443).
If you see the No Bluetooth Audio
Device Authorized message, you will
need to authorize the Bluetooth ®
audio
device first.
X Select BT Audio

by sliding VÆ and turning
cVd the COMAND controller and press
W to confirm.
X Confirm Bluetooth Audio Device List
by pressing W the COMAND controller.
X To search: confirm Search for BT
Audio Devices by pressing the COMAND
controller W.
COMAND searches for Bluetooth ®
audio
devices within

range and adds them to the
Bluetooth ®
device list. Bluetooth ®
audio
devices are detected if they support the
Bluetooth ®
audio profiles (A2DP, AVRCP).
The duration of the search depends on the
number of Bluetooth ®
audio devices within
range and their characteristics.
X To authorize: select an unauthorized
Bluetooth ®
audio device from the list
(: in the example) by turning cVd the
COMAND controller.
X Select the symbol to the right of the
Bluetooth ®
audio

device by sliding VY theCOMAND controller and press
W to
confirm.
X Select Authorize and
press W to confirm.
Depending on the Bluetooth ®
audio device
used, you now have two options for
continuing with authorization.
X Option 1: enter the passkey. You can find
information on this in the "Authorizing
(registering) a mobile phone" section
(Y page 360).
After successful authorization, the
Bluetooth ®
audio device is connected and
starts playing.
X Option 2 (Secure Simple Pairing): if the
digit codes displayed in COMAND and on
the Bluetooth ®
audio device are the same,
confirm Yes by pressing W.
If you select Yes, authorization continues
and the Bluetooth ®
audio device is
connected. Playback starts.
If you select No, authorization will be
canceled.
i The Bluetooth ®
audio device must
support the Bluetooth ®
version 2.1 for
connection via Secure Simple Pairing.
COMAND creates

a six-digit code, which is
displayed on the two devices that are to be
connected.
External authorization If COMAND does not find your Bluetooth
®
audio device, this may be due to particular
security settings on your Bluetooth ®
audio
device. In this case, check whether your
Bluetooth ®
audio device can locate the Audio
441
COMAND Z