key MERCEDES-BENZ SLR CLASS 2007 Manual Online

358 Practical hints
Replacing SmartKey batteries
1Mechanical key
2Unlocking the battery compartment
3Removing the battery compartment
4Slide
Insert mechanical key1in side
opening, push gray slide4 in direction
of arrow2.
The battery compartment is unlatched.
Pull battery compartment out of the
housing in direction of arrow3.5Battery
6Contact spring
Remove the discharged batteries.
Using a lint-free cloth, insert new
batteries5 under the contact
spring6 with the plus (+) side facing
up.
Return battery compartment into
housing until it locks into place.
Slide mechanical key1 back into the
SmartKey.
Check the operation of the SmartKey.

361 Practical hints
Replacing wiper blades
Replacing wiper blades
Removing wiper blades Remove the SmartKey from starter
switch.
Fold the wiper arm forward.
You must feel the wiper arm engage in
position.
Set the wiper blade at 90° to the wiper
arm.
Slide the wiper blade out in direction of
arrow.
Installing wiper blades
Position the wiper blade at 90° to the
wiper arm.
Slide the wiper blade onto the wiper
arm.
Fold the wiper blade parallel to the
wiper arm.
Fold the wiper arm backward to rest on
the windshield. Make sure you hold on
to the wiper when folding the wiper arm
back.
Warning!G
For safety reasons, remove SmartKey from
starter switch before replacing a wiper
blade. Otherwise the motor could suddenly
turn on and cause injury.
Warning!G
Wiper blades are components that are sub-
ject to wear and tear. Change the wiper
blades twice a year, preferably in the spring
and fall. Otherwise the windows will not be
properly wiped. As a result, you may not be
able to observe surrounding traffic condi-
tions and could cause an accident.
!The hood must be opened (page 250)
before folding the wiper arms away from the
windshield. You could otherwise damage the
hood and/or the wiper arm.
!Do not pull on the wiper blade inserts. They
could tear.
!Hold on to the wiper when folding the wiper
arm back. If released, the force of the impact
from the tensioning spring could crack the
windshield.
Do not allow the wiper arms to contact the
windshield glass without a wiper blade inserted.
Make sure the wiper blades are properly
installed. Improperly installed wiper blades may
cause windshield damage.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Center.

362 Practical hints
Flat tire
The vehicle is equipped with the TIREFIT
kit.
Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flashers.
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake.
Move the gear selector lever to park
positionP.
Turn off the engine (page 56).
Remove the SmartKey from the starter
switch.
Have any passenger exit the vehicle at
a safe distance from the roadway.
Sealing tires with TIREFIT
Small tire punctures, particularly those in
the tread, can be sealed with TIREFIT.
TIREFIT can be used in ambient tempera-
tures down to -4°F (-20°C).
Foreign objects (e.g. screws or nails)
should not be removed from the tire.
Take TIREFIT, the sticker, and the
electric air pump out of the trunk.
Attach the sticker where it will be easily
seen by the driver on the instrument
cluster.
!A wheel change should only be carried out
at an authorized Mercedes-Benz Center. Other-
wise there is a danger of damaging the vehicle by
jacking it up incorrectly.
iOpen door only when conditions are safe to
do so.
Warning!G
Keep TIREFIT away from sparks, open flame
or heat source.
Do not smoke.
Warning!G
TIREFIT is a limited repair device. TIREFIT
cannot be used for cuts or punctures larger
than approximately 0.16 in (4 mm) and tire
damage caused by driving with extremely
low tire inflation pressure, or on a flat tire, or
a damaged wheel.
Do not drive the vehicle under such
circumstances.
Contact your nearest Mercedes-Benz
Center for assistance or call Roadside
Assistance.
!After using TIREFIT, the tire inflation
pressure sensor may have to be replaced.

364 Practical hints
Flat tire
Screw filler hosea onto tire valve7.
Close vent screw9 on pressure
gauge.
Insert electrical plug4 into vehicle
cigarette lighter socket.
Turn the SmartKey in the starter switch
to position1 (
page 40).
PressI on electric air pump switch8.
The electric air pump should now
switch on and inflate the tire.After 5 minutes, the pressure gauge must
display at least 26 psi (1.8 bar). The air
hose can become hot during inflation.
Please exercise appropriate caution.
If this tire inflation pressure is not at-
tained, turn off the electric air pump,
detach the filler hose from the tire
valve, and drive vehicle back and forth
very slowly approximately 30 ft (10 m).
This serves to better distribute the
TIREFIT sealant material inside the tire.
Unscrew the air pump’s air hose5
from flange6 of the TIREFIT
container.
Screw air hose5onto tire valve7.
Inflate the tire again.
After attaining a tire inflation pressure
of 26 psi (1.8 bar), press0 on electric
air pump switch8.
The electric air pump should now be
switched off.
Turn the SmartKey in the starter switch
to position0 (
page 40).
Detach the electric air pump.
The air hose may still be hot. Please
exercise appropriate caution.
!Do not operate the electric air pump longer
than 8 minutes without interruption. Otherwise it
may overheat.
You may operate the air pump again after it has
cooled off.
Warning!G
If a tire inflation pressure of 26 psi (1.8 bar)
is not attained, the tire is too severely
damaged for TIREFIT to provide a reliable
tire repair.
In this case, TIREFIT cannot properly seal
the tire.
Do not drive the vehicle.
Contact the nearest Mercedes-Benz Center
or call Roadside Assistance.


368 Practical hints
Batteries
Charging the batteries
You can obtain detailed information on
charging the battery from your authorized
Mercedes-Benz Center.
Warning!G
The brake system requires electrical power
to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. The same applies if
battery is disconnected. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes are only applied to the
front wheels. Stopping distance is
increased! Adjust your driving style
accordingly. For more information, see
“Electro-hydraulic brake system”
(
page 86).
Warning!G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch

the gear selector lever will remain
locked in park positionP
Warning!G
Never charge a battery while still installed in
the vehicle unless the battery charge unit
approved by Mercedes-Benz (supplied with
your vehicle) is being used. Gases may es-
cape during charging and cause explosions
that may result in paint damage, corrosion
or personal injury.
A battery charge unit specially adapted for
Mercedes-Benz vehicles and tested and
approved by Mercedes-Benz is available,
permitting the charging of the battery in its
installed position. Contact an authorized
Mercedes-Benz Center for information and
availability. Charge battery in accordance
with the separate operating instructions for
the battery charger.

369 Practical hints
Batteries
Charging with the battery charger
Only use the battery charge unit approved
by Mercedes-Benz and supplied with your
vehicle. This charger is designed to auto-
matically control the charge rate, and
charge the battery or maintain the existing
charge in the battery while the vehicle is
parked and not being driven for long
periods of time (on average approximately
3 weeks or more). Not driving the vehicle
for such extended periods may cause the
charge in the vehicle battery to drop.
Using the charging point
The charging point for the battery charger
is located next to the CD-changer on the
left-hand side in the trunk.1Charging point
Remove the SmartKey from the starter
switch.
Open the cover of the charging
point1.
Connect the battery charger with the
charging point 1.
Observe and follow the separate
operating instructions for the battery
charger.
Charge up the battery.
The battery charger switches off
automatically when the battery is
sufficiently charged.Using the charging terminals
The charging terminals for the battery
charger are located in the trunk under-
neath the interior floor.
1Negative charging terminal
2Positive charging terminal
Connect positive terminal2 and
negative terminal1 with the battery
charger. Start with the positive
terminal2.
Charge up the battery. Observe and fol-
low the separate operating instructions
for the battery charger.

370 Practical hints
Towing the vehicle
Mercedes-Benz recommends that the
vehicle be transported with all wheels off
the ground using flatbed or appropriate
wheel lift/dolly equipment.
When circumstances do not permit the
recommended towing methods, the vehi-
cle may be towed with all wheels on the
ground or front wheels raised only so far as
necessary to have the vehicle moved to a
safe location where the recommended
towing methods can be employed.
!Use flatbed or wheel lift/dolly equipment
with SmartKey in starter switch turned to
position0.
Do not tow with sling-type equipment. Towing
with sling-type equipment over bumpy roads will
damage radiator and supports.
To prevent damage during transport, do not tie
down vehicle by its chassis or suspension parts.
!Do not tow-start the vehicle.
!If the vehicle is towed with the front axle
raised, the gear selector lever must be in neutral
positionN and the engine must be shut off
(SmartKey in starter switch position0 or1).
Active braking action through the ESP
® may oth-
erwise seriously damage the brake system which
is not covered by the Mercedes-Benz Limited
Warranty.
When towing the vehicle with all wheels on the
ground, the gear selector lever must be in neu-
tral positionN and the SmartKey must be in
starter switch position2.
When towing the vehicle with all wheels on the
ground or the front axle raised, the vehicle may
be towed only for distances up to 30 miles
(50 km) and at a speed not to exceed 30 mph
(50 km/h).
!To be certain to avoid a possibility of dam-
age to the transmission, however, we recom-
mend the drive shaft be disconnected at the rear
axle drive flange for any towing beyond a short
tow to a nearby garage.
Warning!G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:

the engine will not run

there is a malfunction in the electro-hy-
draulic brake system

there is a malfunction in the power
supply or in the vehicle’s electrical
system
as that will be necessary to adequately
control the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make certain that the SmartKey
is in starter switch position2.

371 Practical hints
Towing the vehicle
Warning!G
The brake system requires electrical power
to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes are only applied to the
front wheels. Stopping distance is in-
creased! Adapt your driving style according-
ly. For more information, see
“Electro-hydraulic brake system”
(
page 86).
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
!Towing of the vehicle should only be done
using the properly installed towing eye bolt.
Never attach tow cable, tow rope or tow rod to
the vehicle chassis, frame or suspension parts.
iTo signal turns while being towed with the
hazard warning flasher in use, turn SmartKey in
starter switch to position2 and activate the
combination switch for the left or right turn
signal in the usual manner – only the selected
turn signal will operate.
Upon canceling the turn signal, the hazard
warning flasher will operate again.
iWhen towing the vehicle with all wheels on
the ground, please note the following:
With the automatic central locking activated and
the SmartKey in starter switch position2 the
vehicle doors lock if the left front wheel as well
as the right rear wheel are turning at vehicle
speeds of approximately 9 mph (15 km/h) or
more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking
(
page 139) and switch off the tow-away alarm
(
page 94).
iThe gear selector lever will remain locked in
park positionP and the SmartKey will not turn in
the starter switch if the battery is disconnected
or discharged. See notes on the battery
(
page 367).

402 Technical terms
Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles,
including

engine

clutch/torque converter

transmission

transfer case

drive shaft

differential

axle shafts/axles
Production options weight
(
page 285)
Program mode selector switch
Used to switch the automatic trans-
mission between sport operation (S),
comfort operation (C) and manual
operation (MAN).
PSI
(P
ounds per square inch)
(
page 285)Recommended tire inflation pressure
(
page 285)
REST
(Residual Engine Heat Utilization)
Feature that uses the engine heat
stored in the coolant to heat the vehi-
cle interior for a short time after the
engine has been turned off.
Rim
(
page 285)
RON
(R
esearch Octane Number)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line’s ability to resist undesired detona-
tion (knocking). The average of both
the MON (Motor Octane Number) and
RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Electro-hydraulic brake system
Electronically controlled hydraulic
braking system for increased braking
safety and comfort.
Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of park
position P without SmartKey turned
and brake pedal depressed.
Sidewall
(page 285)
SRS
(S
upplemental Restraint System)
Seat belts, emergency tensioning de-
vice and air bags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.

406 Index
Ashtray 208
Aspect ratio 284
AUDIO menu 126
Audio system 31, 145
Button and soft key operation 148
Cassette operation 154
CD operation 158
Location 145
Operating and display elements 146
Operating safety 145
Operation 148
Radio operation 151
Switching on/off 148
Telephone operation 162, 210
Auto-dimming, Interior rear view
mirror 182
Automatic car wash 296
Automatic central locking, Control
system 104, 139Automatic climate control 186
Adjusting air volume 193
Air conditioning refrigerant 391
Air conditioning, Cooling 196
Air distribution 191, 192
Air recirculation mode 195
Air vents 187
Air volume 191
Control panel 188
Deactivating system 190
Defrosting 185, 194
MAXCOOL 193
Residual heat utilization 197
Side air vents 31
Temperature 191
Temperature sensor 33
Automatic headlamp mode 107
Automatic lighting control, Interior
lighting 112Automatic transmission 169
Accelerator position 173
Damage 372
Driving tips 173
Emergency operation (Limp-Home
Mode) 181
Gear ranges 174
Gear selector lever 32, 169
Gear selector lever control one-touch
gearshifting 175
Gear selector lever position 171
Gear shifting malfunctions 181
Kickdown 173
Manual shift program 179
Shift program mode selector
switch 175
Shifting procedure 170
Starting the engine 47
Steering wheel gearshift control
one-touch gearshifting 177
Towing 372
Transmission fluid level 254
Automatic transmission fluid 254