2006 MERCEDES-BENZ SL55AMG key battery

106 Controls in detailLocking and unlockingChecking the battery
Press button ‹or Œ.
Battery check lamp5 (
page 101)
comes on briefly to indicate that the
SmartKey batteries are in order.Unlocking the trunk
You can unlock the trunk separately.
A minimum height clearance of
6.2 ft (1.88 m) is required to open the
trunk lid.
The handle is located above the rear li-
cense plate recess.
1Handle

Pull on handle 1.
The vehicle unlocks the trunk lid only.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
Mercedes-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 101)
does not come on briefly during check,
then the SmartKey battery is dis-
charged.


Replace the battery (
page 389).
You can obtain the required battery at
any authorized Mercedes-Benz Center.
iIf the trunk does not unlock, it is still
locked separately (
page 110).

194 Controls in detailPower windowsFully closing the door windows
(Express-close)
Pull switch1 or2 past the resis-
tance point and release.
The corresponding door window closes
completely.
If the upward movement of the door win-
dow is blocked during the closing proce-
dure, the door window will stop and open
slightly.
Stopping windows

Press or pull the respective switch
again.Closing the windows with
KEYLESS-GO*

Press and hold lock button on an out-
side door handle (
page 62) until the
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 the ignition (
page 36).

Pull the power window switches until
the side windows are closed.
Hold the switches for approximately
1 second.
The power windows are synchronized.
Warning!
G
Driver’s door only:
If within 5 seconds the switch is again
pulled past the resistance point and re-
leased, the automatic reversal will not
operate.
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.

200 Controls in detailRetractable hardtopClosing the retractable hardtop with
the SmartKey (Convenience feature)
Aim the transmitter eye at the door
handle.
The SmartKey must be in close proxim-
ity to the outside 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 Retractable roof Closed
.Problems when operating the
retractable hardtop
Indicator lamp in the retractable hard-
top switch is flashing
Several conditions 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.
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 198) before continuing to drive.

372 Practical hintsWhat to do if …Left display
Right display
Possible cause/consequence
Possible solution
O
Close hood
You are driving with the hood open.

Close the hood (
page 273).
I
Remove
key
You have forgotten to remove the
SmartKey from the starter switch.

Remove the SmartKey from the starter
switch.
Replace
key
The batteries in the SmartKey are
discharged.

Change the batteries (
page 389).
F
Key
Check battery
The batteries in the SmartKey with
KEYLESS-GO* are discharged.

Change the batteries (
page 389).
Don’t forget
key
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.

373 Practical hints
What to do if …
Left display
Right display
Possible cause/consequence
Possible solution
F
Key
not detected
The SmartKey with KEYLESS-GO* is
not recognized while the engine is
running because:

The SmartKey with
KEYLESS-GO* is not in the vehi-
cle.


There is strong radio-frequency
interference.

Stop the vehicle as soon as it is safe to do so.

Search for the SmartKey with KEYLESS-GO*
or continue to operate the vehicle with the
SmartKey.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again af-
ter the engine is stopped.
Key
not detected
The SmartKey with KEYLESS-GO* is
not recognized when attempting to
start the engine with the
KEYLESS-GO start/stop button* on
the gear selector lever because:

The SmartKey with
KEYLESS-GO* is not in the vehi-
cle.


The battery in the SmartKey
with KEYLESS-GO* is not insert-
ed properly or completely dis-
charged.

Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.

Make sure the battery in the SmartKey with
KEYLESS-GO* is properly inserted
(page 390) and is not discharged
(page 106).

Operate the vehicle with the SmartKey if
necessary.

389 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
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
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 385).
1Mechanical key
2Slide
3Battery compartment

Insert mechanical key1in direction
of arrow into side opening.

Using mechanical key1, push gray
slide2to unlatch battery compart-
ment 3.

Pull battery compartment3out of the
housing in direction of arrow.

Remove the batteries in direction of ar-
row.
4Battery
5Contact spring

Using a lint-free cloth, insert new bat-
teries 4 under contact spring 5 with
the positive terminal (+) facing up.

Return battery compartment 3 into
housing until it locks into place.

Slide mechanical key 1 back into the
SmartKey.

Check the operation of the SmartKey.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.iWhen inserting batteries, make sure
they are clean and free of lint.

390 Practical hintsReplacing SmartKey batteriesSmartKey with KEYLESS-GO*
Replacement battery: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key
(page 385).

Take the battery compartment out of
the SmartKey housing (
page 389).1Battery
2Tilt battery up
3Mechanical key

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

Pull out battery 1 in direction of ar-
row.

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

Return the battery compartment into
the housing until it locks into place.

Slide mechanical key 1 back into the
SmartKey, see “SmartKey”
(page 389).

Check the operation of the SmartKey
with KEYLESS-GO.
iWhen replacing batteries, always re-
place both batteries. The required re-
placement batteries are available at
any authorized Mercedes-Benz Center.

414 Practical hintsBatteries
have cell caps and the battery cover is
non-removable. Do not attempt to
open the consumer battery as other-
wise the battery will be damaged.
Even though VRLA batteries do not
require topping-up of the electrolyte
level and cannot be opened to check
the electrolyte level, the battery condi-
tion must be checked periodically by
performing a battery conductance test.
Refer to Maintenance Booklet for bat-
tery condition testing intervals.
As with any other battery, disconnect
the consumer battery if you do not in-
tend to operate your vehicle for an
extended period of time to prevent bat-
tery discharge or connect an accessory
battery charge unit expressly approved
by Mercedes-Benz for your vehicle
model to maintain the battery charge.
Contact an authorized Mercedes-Benz
Center for further information.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the starter battery checked regu-
larly by an authorized Mercedes-Benz
Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the
risk of acid burns in the event of an acci-
dent.