2003 MERCEDES-BENZ CLK500 COUPE keyless

88 Controls in detailLocking and unlockingSmartKey with KEYLESS-GO*
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you grasp a door
handle.
If the SmartKey with KEYLESS-GO* is valid,
your vehicle unlocks

the doors


the trunk lid


the fuel filler flapImportant notes on using KEYLESS-GO*


You can also use the SmartKey with
KEYLESS-GO like a normal key
(page 84).


You can combine KEYLESS-GO func-
tions with normal key functions (e.g.
unlocking with KEYLESS-GO and lock-
ing with the remote control).


Always carry the SmartKey with
KEYLESS-GO with you.


Never store the SmartKey with
KEYLESS-GO together with:

electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO


metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.


To lock or unlock the vehicle, the key
must be located outside the vehicle
within approximately 3 ft. (1 m) of a
door or the trunk.
Warning!
G
When leaving the vehicle always remove the
key from the starter switch, take the Smart-
Key with KEYLESS-GO (if so equipped) with
you and lock the vehicle. Do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause an ac-
cident and/or serious personal injury.!To prevent possible malfunction, avoid
exposing the SmartKey with
KEYLESS-GO to high levels of electro-
magnetic radiation.

89 Controls in detail
Locking and unlocking


In order to start the engine with the
SmartKey with KEYLESS-GO:

the SmartKey with KEYLESS-GO
must be located 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
SmartKey will then have priority over
the KEYLESS-GO function and the vehi-
cle’s electrical system will operate ac-
cording to the position of the key in the
starter switch, even stopping the en-
gine.


If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle (e.g. inside clothing or briefcase)
and can no longer be recognized by the system, the vehicle cannot be locked
or the engine started via the KEY-
LESS-GO system.


I f t he Sm a rtK ey with K EY L ES S-G O is re -
moved from the vehicle while the igni-
tion is switched on (e.g. if passenger
exits the vehicle with the key), the mes-
sage
Key not recognized!
will appear
in the multifunction display.
Find the key or change its present loca-
tion 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 SmartKey
with KEYLESS-GO that is left inside the
vehicle. If you leave the card behind
when exiting and locking the vehicle,
the message
Key recognized in vehi-
cle!
will appear in the multifunction
display.Factory setting
Global unlocking

Grasp the door handle.
The vehicle will lock again automatically
within approximately 40 seconds if neither
door nor trunk is opened.iThe vehicle could inadvertently unlock
if the SmartKey with KEYLESS-GO 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.

90 Controls in detailLocking and unlockingGlobal locking
Press lock button at door handle
(page 53) or trunk lid (
page 91).Unlocking the trunk lid
The handle is located in the rear license
plate recess.

Pull on the handle and lift up the trunk
lid.
The vehicle unlocks the trunk lid only.
If the trunk lid does not open, it is still
locked separately (
page 95).The trunk can also be opened from the in-
side in an emergency, see “Trunk lid emer-
gency release” (
page 93).
!If you cannot lock or unlock the vehicle
with the SmartKey with KEYLESS-GO,
then either the batteries of the key are
discharged or the key is malfunction-
ing.

Check the batteries of the Smart-
Key with KEYLESS-GO (
page 86)
and replace them if necessary
(
page 312).


Use the mechanical key to unlock
the driver’s door (
page 310) and
trunk lid (
page 311) as required.
Lock the vehicle using the mechan-
ical key (
page 311).
If your SmartKey with KEYLESS-GO is
malfunctioning, contact your autho-
rized Mercedes-Benz Center.
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
iIf the vehicle was previously centrally
locked with the SmartKey, the trunk lid
will lock automatically after closing it.
The turn signals will flash three times to
confirm locking.
Vehicles with KEYLESS-GO:
To prevent a possible inadvertent lock-
out, the trunk lid will open automatical-
ly if a SmartKey with KEYLESS-GO* is
recognized in the area of the rear shelf
or inside the trunk.

91 Controls in detail
Locking and unlocking
Locking the vehicle
1Trunk lock button
Press the lock button at door
(page 53) or trunk.
Closing the side windows and
sliding/pop-up roof

Press and hold lock button at door
(page 53) until the side windows and
the sliding/pop-up roof are closed.Loss of the SmartKey with KEYLESS-GO
If you lose your SmartKey with KEY-
LESS-GO, you should do the following:

Have the SmartKey with KEYLESS-GO
deactivated by an authorized
Mercedes-Benz Center.

Report the loss immediately to your car
insurance company.

Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
Warning!
G
When closing the windows and the slid-
ing/pop-up roof, be sure that there is no
danger of anyone being harmed by the clos-
ing procedure.
If potential danger exists, proceed as fol-
lows:

Release the lock button.


Pull on the door handle and hold firmly.
The side windows and the slid-
ing/pop-up roof will open for as long as
the door handle is held but the door not
opened.

94 Controls in detailLocking and unlockingClosing the trunk lid
1Handle
Lower trunk lid by pulling firmly on
handle1.
Separately locking the trunk
1Locked
2Unlocked
Close the trunk lid (
page 94)

Pull the mechanical key out of the
SmartKey (
page 310).

Insert the mechanical key into the
trunk lid lock.

Turn the key completely to the right to
position 1.
The trunk remains locked even when the
vehicle is centrally unlocked.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
lid opening when closing the trunk. Be espe-
cially careful when small children are
around.
Warning!
G
Only drive with the trunk closed as, among
other dangers such as visibility blockage,
exhaust fumes may enter the vehicle interi-
or.iTo prevent an inadvertent lockout, do
not place the key in the trunk.
Vehicles with KEYLESS-GO:
To prevent a possible inadvertent lock-
out, the trunk lid will open automatical-
ly if a SmartKey with KEYLESS-GO* is
recognized in the area of the rear shelf
or inside the trunk.

95 Controls in detail
Locking and unlocking
Separately unlocking the trunk
Turn the key completely to the left to
position 2.
You can now open the trunk.
Automatic central locking
The doors and the trunk automatically lock
when the ignition is switched on and the
wheels are turning at vehicle speeds of ap-
proximately 9 mph (15 km/h) or more.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.You can deactivate the automatic locking
using the control system (
page 133).
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.
iYou can only cancel the separate trunk
locking mode by means of the mechan-
ical key.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle automatically locks when
the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more. You could therefore lock yourself
out when the vehicle

is pushed


is on a test stand
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch, take the Smart-
Key with KEYLESS-GO* (if so equipped) with
you and lock the vehicle. Do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause an ac-
cident and/or serious personal injury.

96 Controls in detailLocking and unlockingThe switch is located in the center console.Central locking switch1Locking
2UnlockingLocking

Press upper half1 of the central lock-
ing switch.
If both doors are closed, the vehicle
locks.
Unlocking

Press lower half2 of the central lock-
ing switch.
The vehicle unlocks.
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
SmartKey with KEYLESS-GO*
(if so equipped), 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.

100 Controls in detailSeatsMulticontour seat*
Some models may be equipped with multi-
contour seats. This seat has a movable
seat cushion and inflatable air cushions
built into the seat backrest to provide addi-
tional lumbar and side support.
The seat cushion movement, backrest
cushion height and curvature can be con-
tinuously varied with regulators on the
right side of the seat after turning the
SmartKey in the starter switch to
position2 or pressing the KEYLESS-GO*
start/stop button twice.1Seat cushion depth
2Backrest bottom
3Backrest center
4Side bolster adjustment
Adjusting the multicontour seat in the or-
der listed above is recommended.

Make sure that the ignition is switched
on.
All lamps in the instrument cluster light
up.The seat cushion movement, backrest
cushion height and curvature can be ad-
justed with regulators1, 2 and3.
The side bolsters of the seat backrest can
be adjusted with rocker switch4:

Press to the left.
Side support will be increased.

Press to the right.
Side support will be decreased.iWhen the engine is turned off, the last
cushion setting is retained in memory,
and the cushion is automatically ad-
justed to this setting when the engine
is restarted.