2005 MERCEDES-BENZ SLR CLASS battery

40 Getting startedUnlockingStarter switch positionsStarter switch
0For removing SmartKey
1Power supply for some consumers
2Ignition (power supply for all consum-
ers) and drive position. All lamps (ex-
cept high beam headlamp indicator
lamp and turn signal indicator lamps
unless activated) in the instrument
cluster come on. If a lamp in the instru-
ment cluster fails to come on when the
ignition is switched on, have it checked
and replaced if necessary. If a lamp in
the instrument cluster remains on after
starting the engine or comes on while
driving, see “Lamps in instrument clus-
ter” (
page 296).
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.
iWhen you switch on the ignition, the
indicator and warning lamps (except
high beam headlamp indicator lamp
and turn signal indicator lamps if acti-
vated) in the instrument cluster come
on. This indicates that the respective
systems are operational. They should
go out when the engine is running.
!If the SmartKey is left in the starter
switch position0 for an extended peri-
od of time, it can no longer be turned in
the starter switch.

Remove the SmartKey from the
starter switch and reinsert.
If the SmartKey can still not be turned
in the starter switch, the starter battery
may not be sufficiently charged.


Have the starter battery checked
and charged if necessary
(page 355). Contact an autho-
rized Mercedes-Benz Center.
To prevent accelerated battery
discharge and a possible dead battery,
always remove the SmartKey from the
starter switch when the engine is not in
operation.

49 Getting started
Driving

Close cover1.

Depress the brake pedal.
The gear selector lever lock is released.
For information on turning off the engine,
see “Turning off the engine” (
page 58).Starting difficulties
If the engine does not start as described,
carry out the following steps:

Turn the SmartKey in the starter switch
to position0 and repeat starting
procedure (
page 48).

Remember that extended starting at-
tempts can drain the battery.
If the engine does not start after several
starting attempts, there could be a mal-
function in the engine electronics or in the
fuel supply system.

Notify an authorized Mercedes-Benz
Center.Parking brake
1Button
2Parking brake lever
Warning!
G
Make sure the cover of the start button is
closed after starting the engine. Otherwise
you could be injured on the open cover in an
accident or during driving maneuvers.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children
could release the parking brake, which
could result in an accident and/or serious
injury.

90 Safety and SecurityAnti-theft systemsImmobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
Removing the SmartKey from the starter
switch activates the immobilizer.
Deactivating
Inserting the SmartKey in the starter
switch deactivates the immobilizer.
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens

a door


the trunk lid


the hood


a storage compartment in the rear


the storage compartment under the
armrest
is opened.The alarm system will also be triggered
when


someone attempts to raise the vehicle


someone opens a door from the inside
if the vehicle was locked from the out-
side with the SmartKey


someone opens the trunk lid with the
emergency release button
iIn case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-888-881-6611 (in Canada).
iThe alarm will stay on, even if the acti-
vating element (a door, for example) is
immediately closed.
If the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system (
page 215) provided
Tele Aid service was subscribed to and
properly activated, and that necessary
cellular service and GPS coverage are
available.

96 Controls in detailIn the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. If you are already familiar with the
basic functions of your vehicle, this section
will be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.Locking and unlocking
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks:

the doors


the trunk


the fuel filler flap
Key with remote control1‹ Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4ŒUnlock button
5Battery check lamp
6Â Panic button

98 Controls in detailLocking and unlockingFactory setting
Global unlocking
Press buttonŒ.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm system
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
activated
Global locking

Press button‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The anti-theft alarm system is
armed.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door and the fuel filler flap.

Press and hold buttonsŒ and‹
simultaneously for about five seconds
until battery check lamp5 flashes
twice.
The SmartKey will then function as
follows:
Unlocking driver’s door and fuel filler
flap

Press buttonΠonce.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.Global unlocking

Press buttonΠtwice.
All turn signal lamps flash once. The
anti-theft alarm system is disarmed.
Global locking

Press button‹.
With the hood, trunk and all doors
closed, all turn signal lamps flash three
times. The anti-theft alarm system is
armed.

99 Controls in detail
Locking and unlocking
Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5
(page 96) flashes twice.Checking the batteries

Press button ‹ or Œ.
Battery check lamp5 (
page 96)
comes on briefly to indicate that the
SmartKey batteries are in order.Unlocking and opening the trunk lid
You can unlock the trunk separately.
A minimum height clearance of
5.5 ft (1.65 m) is required to open the
trunk lid.

Press and hold buttonŠ until the
trunk unlocks and opens slightly.
!If you can no longer lock or unlock the
vehicle with the SmartKey, then either
the batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.

Check the batteries in the
SmartKey (
page 99) and replace
them if necessary (
page 344).


Use the mechanical key to unlock
the vehicle (
page 342).


Have the vehicle battery and the
battery connections checked. Con-
tact an authorized Mercedes-Benz
Center.
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
!If battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.

Replace the batteries (
page 344).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
iIf the batteries are checked within
signal range of the vehicle, pressing
the‹ orŒ button will lock or
unlock the vehicle accordingly.
iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed. The turn signals will
flash three times to confirm locking.

103 Controls in detail
Locking and unlocking
Illumination of the emergency release
button:

The button will flash for 30 minutes
after opening the trunk.


The button will flash for 60 minutes
after closing the trunk.
Automatic locking
The doors and the trunk lid lock automati-
cally when the vehicle is set into motion.
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 135).
Locking and unlocking from the inside
You can lock or unlock the vehicle from in-
side using the central locking switches.
This can be useful, for example, if you want
to unlock the passenger door from the in-
side or want to lock the vehicle before
starting to drive.
The central locking switch does not lock or
unlock the fuel filler flap.
iThe emergency release button does
not open the trunk lid if the vehicle
battery is discharged or disconnected.
If the vehicle has previously been
locked from the outside with the
SmartKey, opening the trunk from the
inside using the emergency release
button will trigger the anti-theft alarm
system.
To cancel the alarm, do one of the
following:

Press buttonŒ or‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle locks automatically 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
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.

181 Controls in detail
Good visibility
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the
defroster as soon as the rear window is
clear. The defroster is automatically
deactivated after approximately
6 to 17 minutes of operation depending on
the outside temperature.Activating

Press buttonF in the climate
control panel (
page 184).
The indicator lamp on the button
comes on.Deactivating

Press buttonF again.
The indicator lamp on the button goes
out.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before
driving. Visibility could otherwise be
impaired, endangering you and others.
!If the rear window defroster switches
off too soon and the indicator lamp
starts flashing, this means that too
many electrical consumers are
operating simultaneously and there is
insufficient voltage in the battery. The
system responds automatically by
deactivating the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster
automatically turns itself back on.