2004 MERCEDES-BENZ SL600 key battery

98 Controls in detailLocking and unlockingLocking the vehicle
1Trunk lock button
Press trunk lock button 1 or the lock
button on the door handle (
page 55).Checking the battery

Press button ‹ or Œ.
Battery check lamp5 (
page 93)
comes on briefly to indicate that the
SmartKey batteries are in order.Loss of SmartKey with KEYLESS-GO
If you lose your SmartKey with
KEYLESS-GO, you should do the following:

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

Report the loss of the SmartKey with
KEYLESS-GO or the mechanical key to
your car insurance company immedi-
ately.

Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
!If battery check lamp5 (
page 93)
does not come on briefly during check,
then the SmartKey battery is dis-
charged.


Replace the battery (
page 328).
You can obtain the required battery at
any authorized Mercedes-Benz Center.

178 Controls in detailAutomatic climate controlResidual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.Activating

Turn the SmartKey in the starter switch
to position1 or0 or remove it from the
starter switch.

Press button T (
page 171).
The indicator lamp on button T
comes on.Deactivating

Press button T (
page 171).
The indicator lamp on button T
goes out.
The residual heat is automatically turned
off:


when the ignition is switched on


after about 30 minutes


if the battery voltage drops
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting1 regardless of the air distribu-
tion control setting.

183 Controls in detail
Power windows
Stopping windows
Press or pull the respective switch
again.
Closing the windows with the
SmartKey with KEYLESS-GO*

Press and hold lock button at door
(page 55) until the side windows are
closed.
Synchronizing power windows
The power window must be resynchro-
nized each time

after the battery has been disconnect-
ed


if the power windows cannot be fully
opened (Express-open) or closed
(Express-close)
Synchronizing the power windows

Switch on ignition.

Pull the power window switches until
the side windows are closed.
Hold the switches for approximately
one second.
The power windows are synchronized.
Warning!
G
When closing the windows make sure that
there is no danger of anyone being harmed
by the closing procedure.
The windows will not automatically re-open
if blocked during convenience closing.
If potential danger exists, proceed as fol-
lows:

Release the lock button.


Pull on the door handle and hold firmly.
The side windows open for as long as
the door handle is held but the door not
opened.

189 Controls in detail
Retractable hardtop
Closing the retractable hardtop with
the SmartKey (Convenience feature)
Aim the transmitter eye at the door
handle.

Press and hold button ‹ until the
retractable hardtop is completely
closed.
The retractable hardtop and the side
windows close. In the tachometer dis-
play you will see the message Vario-Roof closed
.Problems when operating the
retractable hardtop
Indicator lamp in the retractable hard-
top switch is flashing
Several problems may cause the indicator
lamp in the hardtop switch to flash when
activated:


The luggage cover in the trunk is not
closed.
Close the luggage cover in the
trunk.


The trunk lid is open.
Close the trunk lid.


The battery voltage is too low.
Start engine and let run while acti-
vating switch.


The hardtop drive system has shut it-
self down. For safety reasons, no more
than five consecutive attempts may be
made to raise or lower the hardtop.
After about ten minutes you may
again attempt to open or close the
retractable hardtop again.
If the indicator lamp in the retractable
hardtop switch flashes when starting off or
while driving and you hear a warning sound
for a maximum of 10 seconds, the retract-
able hardtop is not locked.

Properly lock the retractable hardtop
(page 187) before continuing to
drive.
If the indicator lamp continues to flash af-
ter you have carried out the above actions,
there is a malfunction.

Have the retractable hardtop system
checked at an authorized
Mercedes-Benz Center.
Warning!
G
If the retractable hardtop does not com-
pletely open or close a warning sounds and
the retractable hardtop switch flashes. In
the speedometer display you will see
K
,
in the tachometer display you will see the
message
being lowered!
. After about
15 seconds the roof hydraulics lose pres-
sure.
Properly lock the retractable hardtop
(
page 187) before continuing to drive.

310 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
F
Key
Check battery!
The batteries in the SmartKey with
KEYLESS-GO* are discharged.

Change the batteries (
page 328).
Key
Do not forget!
This message appears (for a maxi-
mum of 60 seconds) if the driver’s
door is opened with the engine shut
off and no SmartKey in the starter
switch.
Message is only a reminder.

Insert SmartKey in the starter switch.

Take the SmartKey with KEYLESS-GO* with
you when leaving the vehicle.
KEYLESS GO
Check system
The KEYLESS-GO* system is mal-
functioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.
KEYLESS-GO
Drive to
workshop!
The KEYLESS-GO* system is mal-
functioning.

Visit an authorized Mercedes-Benz Center as
soon as possible.

328 Practical hintsLocking/unlocking in an emergency
Using the hex-socket wrench provided
in the vehicle tool kit, carefully turn the
locking screw 2 approximately one
quarter turn.

Hook luggage cover into holders
(page 185).

Let go of the hardtop.
It should gradually lower into the trunk.

When top is completely lowered, return
locking screw 2 to its original posi-
tion.

Close the lid.

Replace the trunk floor.

Visit an authorized Mercedes-Benz
Center as soon as possible.Replacing batteries in the SmartKey/
SmartKey with KEYLESS-GO*
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.SmartKey
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
!Do not overtighten the screw.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen replacing batteries, always re-
place both batteries. The required re-
placement batteries are available at
any Mercedes-Benz Center.


329 Practical hints
Locking/unlocking in an emergency

Remove mechanical key (
page 325).

Insert the mechanical key1in side
opening and push gray slide.
The battery compartment is unlatched.

Pull battery compartment2out of the
SmartKey housing in direction of ar-
row.

Remove the batteries.
3Battery
4Contact spring

Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.

Return battery compartment into hous-
ing until it locks into place.SmartKey with KEYLESS-GO*
1Battery
2Tilt battery up
3Mechanical key
Replacement batteries: Lithium, type
CR 2025 or equivalent.
iThe required replacement batteries are
available at any Mercedes-Benz
Center.


330 Practical hintsLocking/unlocking in an emergency
Remove mechanical key (
page 325).

Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.

Pull the battery compartment out of the
SmartKey housing.

Using mechanical key3, apply pres-
sure to position 2.
Battery 1 tilts up slightly.

Pull battery 1 out in direction of ar-
row.

Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.

Return battery compartment into hous-
ing until it locks into place.