42 Getting started
Adjusting
The seat adjustment switch is located on
the door sill.
1Seat fore and aft adjustment
2Seat height
3Seat angleSeat fore and aft adjustment
Slide the switch forwards or backwards
in the direction of arrow 1.
Seat height
Slide the switch up or down in the
direction of arrow 2.
Seat angle
Slide the switch up or down in the
direction of arrow 3.
Steering wheel
!When moving the seat, make sure that there
are no items in the footwell or behind the seat.
Otherwise you could damage the seat.
Warning!G
Do not adjust the steering wheel while
driving. Adjusting the steering wheel while
driving could cause the driver to lose control
of the vehicle.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle.
Even with the SmartKey removed from the
starter switch or the vehicle, the steering
wheel can be adjusted. Therefore, do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.
78 Safety and Security
Occupant safety
Installation of infant and child restraint
systems
This vehicle is equipped with a tether an-
chorage for a top tether strap behind the
passenger seat.
1Cover of anchorage ring
To have better access to the anchorage
ring, move the passenger seat forward
(
page 42).
Remove cover1 in direction of the
arrow from anchorage ring3.
Warning!G
Infants and small children should never
share a seat belt with another occupant.
During an accident, they could be crushed
between the occupant and seat belt.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle
and/or the child is not properly secured in
the child restraint.
Warning!G
Children too big for a toddler restraint must
ride in seats using regular seat belts.
Position the shoulder belt across chest and
shoulder, not face or neck. A booster seat
may be necessary to achieve proper belt
positioning for children over 41 lb until they
reach a height where a lap/shoulder belt fits
properly without a booster.
When the child restraint is not in use,
remove it from the vehicle or secure it with
the seat belt to prevent the child restraint
from becoming a projectile in the event of
an accident.
Do not leave children unattended in the
vehicle, even if the children are secured in a
child restraint system. Unsupervised
children in a child restraint system may use
vehicle equipment and may cause an
accident and/or serious personal injury.
101 Controls in detail
Locking and unlocking
Unlocking and opening the trunk
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 lid unlocks and opens slightly.
Checking the batteries
Press button ‹ or Œ.
Battery check lamp5 (
page 98)
comes on briefly to indicate that the
SmartKey batteries are in order.Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
If necessary, have the trunk lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a
replacement.
Opening the doors
Opening from the outside
For information on opening the doors from
the outside, see “Getting started”
(
page 38).
Opening from the inside
You can open a locked door from the in-
side. Open the door only if the vehicle is
stationary and when conditions are safe to
do so.
1Inside door handle
iIf battery check lamp5 does not come on
briefly during check, then the SmartKey
batteries are discharged.
Replace the batteries (
page 357).
You can obtain the required batteries at any
authorized Mercedes-Benz Center.
iIf the batteries are checked within signal
range of the vehicle, pressing button‹
orŒ will lock or unlock the vehicle
accordingly.
102 Controls in detail
Locking and unlocking
Pull on door handle1.
The door swings outwards and up-
wards automatically.Opening the trunk
Opening the trunk from the outside
A minimum height clearance of
5.5 ft (1.65 m) is required to open the
trunk lid.
The handle is located above the rear
license plate recess.
1Trunk lock
2Handle The vehicle must be unlocked.
Pull on handle2 and lift the trunk lid.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk emer-
gency release” (
page 104).
Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of
5.5 ft (1.65 m) is required to open the
trunk lid.
The switch is located on the lower part of
the center console.
!Ensure sufficient side- and overhead clear-
ance prior to opening the doors, see “Main di-
mensions” (
page 387).
iIf the vehicle has previously been locked
with the SmartKey, opening a door from the
inside 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.
!Always make sure that there is sufficient
overhead clearance.
275 Operation
Tires and wheels
General:
Depending on the design standards used,
the tire size molded into the sidewall may
have no letter or a letter preceding the tire
size designation.
No letter preceding the size designation
(as illustrated above): Passenger car tire
based on European design standards.
Letter “P” preceding the size designation:
Passenger car tire based on U.S. design
standards.
Letter “LT” preceding the size designation:
Light Truck tire based on U.S. design
standards.
Letter “T” preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only.
Tire width
The tire width1 (
page 274) indicates
the nominal tire width in mm. Aspect ratio
The aspect ratio2 (
page 274) is the
dimensional relationship between tire
section height and section width and is
expressed in percentage. The aspect ratio
is arrived at by dividing section height by
section width.
Tire code
The tire code3 (
page 274) indicates
the tire construction type. The “R” stands
for radial tire type. Letter “D” means diag-
onal or bias ply construction; letter “B”
means belted-bias ply construction.
At the tire manufacturer’s option, any tire
with a speed capability above 149 mph
(240 km/h) can include a “ZR” in the size
designation (for example: 245/40 ZR 18).
For additional information, see “Tire speed
rating” (
page 276).Rim diameter
The rim diameter4 (
page 274) is the
diameter of the bead seat, not the
diameter of the rim edge. Rim diameter is
indicated in inches (in).
Tire load rating
The tire load rating5 (
page 274) is a
numerical code associated with the
maximum load a tire can support.
For example, a load rating of 91 corre-
sponds to a maximum load of 1356 lb
(615 kg) the tire is designed to support.
See also “Maximum tire load”
(
page 280) where the maximum load as-
sociated with the load index is indicated in
kilograms and lb.
284 Operation
Tires and wheels
Tire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for at least three hours or
driven no more than one mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.DOT (Department of Transportation)
A tire branding symbol which denotes the
tire meets requirements of the
U.S. Department of Transportation.
GAWR (G
ross Axle Weight Rating)
The GAWR is the maximum permissible
axle weight. The gross vehicle weight on
each axle must never exceed the GAWR for
the front and rear axle indicated on the
certification label located on the driver’s
door A-pillar.
GVW (G
ross Vehicle Weight)
The GVW comprises the weight of the
vehicle including fuel, tools, spare wheel,
installed accessories, passengers and
cargo and, if applicable, trailer tongue
load. The GVW must never exceed the
GVWR indicated on the certification label
located on the driver’s door A-pillar.
372 Practical hints
Towing the vehicle
Installing/reinstalling towing eye bolt
Take the towing eye bolt1 from its
storage compartment (
page 353).
1Towing eye bolt
Remove cover from the access hole.
Screw towing eye bolt1 clockwise in
to its stop.
Remove the towing eye bolt when you
no longer need it. To do this, carry out
the above steps in reverse order.
Points to bear in mind
The vehicle must not be tow-started.
If the vehicle is to be towed, only tow it
with all wheels on the ground.
If the vehicle has suffered transmission
damage, only tow it with the propeller
shaft disconnected.
Before towing the vehicle, make sure
the battery is connected and charged.
Otherwise you will not be able to switch
on the ignition and move the selector
lever to neutral positionN. There will
then be no power assistance when
steering and braking.
Transporting the vehicle
The towing eye bolt can be used to pull the
vehicle onto a trailer or transporter for
transporting purposes.
Switch on the ignition (page 40).
Move the selector lever to neutral
positionN.
!Only secure the tow bar to the towing eye
bolt. The vehicle could otherwise be damaged.
!Your vehicle is equipped with a front towing
eye bolt only (
page 372).
You cannot tow other vehicles with your vehicle.
!Due to the low clearance height of the SLR,
care must be taken when loading and unloading
from a transporter to avoid damaging the vehicle
body work.
To secure the vehicle, only tie it down by the
wheels or tires. Otherwise it could be damaged.
387 Technical data
Main dimensions
Main dimensions
Mercedes-Benz SLR McLarenMercedes-Benz SLR McLaren 722 Edition
Overall vehicle length183.3 in (4656 mm)183.3 in (4656 mm)
Overall vehicle width75.1 in (1908 mm)75.1 in (1908 mm)
Overall vehicle width
(doors open - widest point)111.7 in (2838 mm)111.7 in (2838 mm)
Overall vehicle height49.6 in (1261 mm)49.3 in (1251 mm)
Overall vehicle height
(doors open - highest point)80.5 in (2045 mm)80.1 in (2035 mm)
Wheelbase106.3 in (2700 mm)106.3 in (2700 mm)
Track, front64.5 in (1638 mm)64.5 in (1638 mm)
Track, rear61.8 in (1569 mm)61.8 in (1569 mm)