81 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press button
Œ
.
All turn signal lamps blink once. The
locking knobs in the doors move up.
The anti-theft alarm system is switched
off. If it is dark, the locator lighting
switches on.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if:
neither door nor trunk is opened
the SmartKey is not inserted in the
starter switch
the central locking switch is not acti-
vatedGlobal locking
Press button
‹
.
All turn signal lamps blink three times.
The locking knobs in the doors move
down.
The anti-theft alarm system is activat-
ed.
Selective setting
If you frequently travel alone, you may wish
to reprogram the key so that
pressing
Œ
only unlocks the driver’s
door and the fuel filler flap.
Press and hold buttons
Œ
and
‹
simultaneously for about five seconds
until battery check lamp5 blinks twice.
The key will then function as follows:
Unlocking driver’s door and fuel filler
flap
Press button
Œ
once.
Global unlocking
Press button
Œ
twice.Global locking
Press button
‹
.
Restoring to factory setting
Press and hold buttons
Œ
and
‹
simultaneously for about six seconds
until battery check lamp5 blinks twice.
!To prevent possible malfunction, avoid
exposing the key to high levels of elec-
tromagnetic radiation.
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch, take the
KEYLESS-GO* card with you and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. It is possible for children to open a
locked door from the inside, which could re-
sult in an accident and/or serious injury.
83 Controls in detail
Locking and unlocking
KEYLESS-GO card*
Specially equipped vehicles come with two
KEYLESS-GO cards. On these vehicles, the
validity of the KEYLESS-GO card is
checked every time you grasp a door
handle.
If the card is valid, your vehicle unlocks
the doors
the trunk lid
the fuel filler flapImportant notes on using KEYLESS-GO
Always carry the KEYLESS-GO card
with you.
Never store the KEYLESS-GO card to-
gether with:
Electronic items such as a cellular
phone or another KEYLESS-GO card
Metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.
Always take an electronic SmartKey
with you in case of a malfunction of the
KEYLESS-GO system.
To lock or unlock the vehicle, the card
must be located outside the vehicle
within approximately 3 ft. (1 m) of a
door or the trunk lid.
In order to start the engine with the
KEYLESS-GO card:
The KEYLESS-GO card must be lo-
cated in the vehicle.
All the doors must be closed.
If you have started the engine with the
KEYLESS-GO start / stop button, you
can only turn it off again with this but-
ton, even if you have put the key in the
starter switch in the meantime.
This does not apply if, after starting, the
selector lever is still in positionP. The
key will then have priority over the card
and the vehicle’s electrical system will
operate according to the position of
the key in the starter switch, even stop-
ping the engine.
If the KEYLESS-GO card is positioned
farther away from the vehicle (e.g. in-
side clothing or briefcase) and can no
longer be recognized by the system,
the vehicle cannot be locked or the en-
gine started via the KEYLESS-GO sys-
tem.
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch, take the
KEYLESS-GO card with you and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious
personal injury.
!To prevent possible malfunction, avoid
exposing the KEYLESS-GO card to high
levels of electromagnetic radiation.
84 Controls in detailLocking and unlocking
If the KEYLESS-GO card is removed
from the vehicle while the ignition is
switched on (e.g. if passenger exits the
vehicle with the card), the message CHIP CARD NOT RECOGNIZED!
will ap-
pear in the multifunction display.
Find the card or change its present lo-
cation immediately (e.g. place it on the
front passenger seat or insert it in shirt
pocket).
Remember that the engine can be
started by anyone with a KEYLESS-GO
card that is left inside the vehicle. If you
leave the card behind when exiting and
locking the vehicle, the message
CHIP
CARD DETECTED IN VEHICLE!
will ap-
pear in the multifunction display.Factory setting
Global unlocking
Grasp the door handle.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if neither door nor trunk is opened.
Global locking
Press lock button at door handle
(page 52) or trunk (
page 86) and
(
page 93).Individual setting
If you frequently travel alone, you may wish
to reprogram the KEYLESS-GO card so that
grasping a door handle only unlocks the
driver’s door, interior lockable storage
compartments and the fuel filler flap.
1Programming button
2“Driver’s door” symbol
3“Global unlock” symbol
iThe vehicle could inadvertently unlock
if the KEYLESS-GO card is within 3 ft.
(1 m) of the vehicle and
the door handle is splashed with
water, or
you attempt to clean the door
handle.
95 Controls in detail
Locking and unlocking
Locking and unlocking from the inside
You can lock or unlock the doors and the
trunk from inside using the central locking
switch. This can be useful, for example, if
you want to lock the vehicle before starting
to drive.
The fuel filler flap cannot be locked or un-
locked with the central locking switch.The switches are located in the center con-
sole.
Central locking / unlocking switches1Central locking switch
2Central unlocking switch
Locking
Press central locking switch 1.
If both doors are closed, the vehicle
locks.
Unlocking
Press central unlocking switch 2.
The vehicle unlocks.
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch, take the
KEYLESS-GO* card with you and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious
personal injury.
iYou can open a locked door from the
inside. Open door only when conditions
are safe to do so.
If the vehicle was previously centrally
locked with the SmartKey or the
KEYLESS-GO* card it will not unlock
using the central locking switch.
If the vehicle was previously locked
with the central locking switch:
While in the global remote control
mode, the complete vehicle is un-
locked when a door is opened from
the inside.
While in the selective remote con-
trol mode, only the door opened
from inside is unlocked.
115 Controls in detail
Instrument cluster
Coolant temperature gauge
During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248° F (120°C),
i.e. close to the red zone of the coolant
temperature gauge.The engine should not be operated with
the coolant temperature above 248° F
(120°C), i.e. in the red zone of the coolant
temperature gauge. Doing so may cause
serious engine damage which is not cov-
ered by the Mercedes-Benz Limited War-
ranty.
Trip odometer
Make sure you are viewing the trip
odometer display.
Press button
è
or
ÿ
on the mul-
tifunction steering wheel repeatedly
until the trip odometer appears if it is
not displayed (
page 117).
Press and hold the reset button
J
(
page 22) in the instrument cluster
until the trip odometer is reset.
Tachometer
The red marking on the tachometer de-
notes excessive engine speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
CL 55 AMG
The tachometer of the CL 55 AMG does
not have a red marking denoting excessive
engine speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated at
an excessive engine speed.
Warning!
G
Driving when your engine is badly over-
heated can cause some fluids which
may have leaked into the engine com-
partment to catch fire. You could be se-
riously burned.
Steam from an overheated engine can
cause serious burns and can occur just
by opening the engine hood. Stay away
f r o m t h e e n g i n e i f y o u s e e o r h e a r s t e a m
coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until it
cools down.
iExcessive coolant temperatures trigger
a warning in the multifunction display
(page 278).
!Avoid driving at excessive engine
speeds, as it may result in serious en-
gine damage that is not covered by the
Mercedes-Benz Limited Warranty.
121 Controls in detail
Control system
Menus, submenus and functions
Menu 1
Menu 2
Menu 3
Menu 4
Menu 5
Menu 6
Menu 7
Menu 8
Commands / submenusStandard dis-
play
AUDIO
Telephone
NAVI
Distronic*
Trip computer
Malfunction
memory
Settings
Call up FSS
Select radio
station
Load phone
book
Activate
route guid-
ance
Call up set-
tings
Fuel consumption
statistics after
start
Call up malfunc-
tion messages
Reset to factory
settings
Check tire pres-
sure*
Operate CD
player
Search for
name in
phone book
Fuel consumption
statistics since
the last reset
Instrument clus-
ter submenu
Check engine oil
level
Call up range
Lighting sub-
menu
Digital speed-
ometer
Vehicle sub-
menuConvenience
submenu
iThe headings used in the menus table
are designed to facilitate navigation
within the system and are not neces-
sarily identical to those shown in the
control system displays.
The first function displayed in each
menu will automatically show you
which part of the system you are in.
129 Controls in detail
Control system
Trip computer menu
Use the trip computer menu to call up sta-
tistical data on your vehicle. The following
information is available:
Fuel consumption statistics after start
Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.
Press button
j
or
k
repeatedly
until you see this message in the dis-
play:
AFTER START
.1Distance driven since start
2Time elapsed since start
3Average fuel consumption since start
4Average speed since startFuel consumption since last reset
Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.
Press button
j
or
k
repeatedly
until you see this message in the dis-
play:
AFTER RESET
.
1Distance driven since last reset
2Time elapsed since last reset
3Average fuel consumption since last re-
set
4Average speed since last reset
Function
Page
Fuel consumption statistics after
start
129
Fuel consumption statistics
since last reset
129
Call up range (distance to empty)
130
iThe
AFTER START
display will flash until
a distance of approximately 1 mile
(1.6 km) has been covered or two min-
utes have elapsed since the engine was
restarted. During this period, you can
incorporate the values for the previous
journey by pressing button
J
in the in-
strument cluster.
If button
J
is not pressed, the
AFTER
START
values are set to “0”.
130 Controls in detailControl systemResetting fuel consumption statistics
Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.
Press button
j
or
k
repeatedly
until you see the reading that you want
to reset in the display.
Press and hold the reset button
J
(
page 22) in the instrument cluster
until the value is reset to
0.Call up range (distance to empty)
Press button
ÿ
or
è
repeatedly
until you see the first function of the
Trip computer menu.
Press button
j
or
k
repeatedly
until you see this message in the dis-
play:
RANGE
.
In the display you will see the calculat-
ed range based on the current fuel tank
level.
Malfunction memory menu
Use the malfunction memory menu to scan
malfunction and warning messages that
may be stored in the system. The informa-
tion shown in the display depends on
whether malfunctions have actually oc-
curred.Warning!
G
Malfunction and warning messages are only
indicated for certain systems and are inten-
tionally not very detailed. The malfunction
and warning messages are simply a remind-
er with respect to the operation of certain
systems and do not replace the owner’s
and / or driver’s responsibility to maintain
the vehicle’s operating safety by having all
required maintenance and safety checks
performed on the vehicle and by bringing
the vehicle to an authorized Mercedes-Benz
Center to address the malfunction and
warning messages (
page 270).