2005 MERCEDES-BENZ SLR lock

357 Practical hints
Towing the vehicle
Towing the vehicle
Mercedes-Benz recommends that the vehi-
cle 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 equip-
ment 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.
Switch off the tow-away alarm and the
automatic central locking.
!If the vehicle is towed with the front
axle raised, the engine must be shut off
(SmartKey in starter switch position0
or1). Otherwise the ESP will immedi-
ately be engaged and will apply the rear
wheel brakes.
When towing the vehicle with all wheels
on the ground, the gear selector lever
must be in 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 dis-
tances 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
damage to the transmission, however,
we recommend the drive shaft be dis-
connected at the rear axle drive flange
for any towing beyond a short tow to a
nearby garage.

358 Practical hintsTowing the vehicleWarning!
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 SBC brake
system


there is a malfunction in the power sup-
ply or in the vehicle’s electrical system
as that will be necessary to adequately con-
trol the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make certain that the SmartKey
is in starter switch position2.
If the SmartKey is left in starter switch
position0 for an extended period of time, it
can no longer be turned in the switch. In this
case, the steering is locked. To unlock, re-
move SmartKey from starter switch and re-
insert.
iTo signal turns while being towed with
the hazard warning flasher in use, turn
SmartKey in starter switch to
position2 and activate the combina-
tion switch for the left or right turn sig-
nal in the usual manner – only the
selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.
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 “SBC brake
system” (
page 84).
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 ve-
hicle. Adapt your driving accordingly.

359 Practical hints
Towing the vehicle
Installing/reinstalling towing eye bolt
Take the towing eye bolt1 from its
storage compartment (
page 340).1Towing eye bolt

Remove cover from the access hole.

Screw towing eye bolt1 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.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated 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 cen-
tral locking (
page 135).
Towing of the vehicle should only be
done using the properly installed tow-
ing eye bolt. Never attach tow cable,
tow rope or tow rod to the vehicle chas-
sis, frame or suspension parts.
iThe gear selector lever will remain
locked in positionP and the SmartKey
will not turn in the starter switch if the
battery is disconnected or discharged.
See notes on the battery (
page 354).
!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 359).
You cannot tow other vehicles with
your vehicle.

385 Technical terms
ABS
(A
nti-lock B
raking S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Accessory weight
(
page 278)
ACL
(Airbrake/C
entral L
ocking)
Controls the locking mechanism of the
Airbrake and the central locking sys-
tem.
Air pressure
(
page 278)
Aspect ratio
(page 278)BabySmart
TM1
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (PASSENGER
AIRBAG OFF warning lamp on the lower
centre console lights up).
BabySmart
TM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger front airbag if a BabySmart
TM
compatible child seat is installed. See
an authorized Mercedes-Benz Center
for availability.
Bar
(
page 278)BAS
(B
rake As
sist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
Bead
(
page 278)
Bi-Xenon headlamps
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.
CAC
(Customer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
1BabySmart
TM is a trademark of Siemens
Automotive Corp.

386 Technical termsCAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping depending on vehi-
cle settings and/or ambient condi-
tions.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.
Cold tire inflation pressure
(
page 278)
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.
Curb weight
(
page 278)
DOT
(Department o
f Transportation)
(
page 279)
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
Engine oil viscosity
Measure of the internal oil friction (vis-
cosity) at different temperatures. The
higher the temperature the oil can tol-
erate without thinning too much, or the
lower the temperature it can tolerate
without thickening too much, the bet-
ter the viscosity characteristics of the
oil.ESP
(E
lectronic S
tability P
rogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency Tensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRS
GAWR
(G
ross A
xle W
eight R
ating)
(
page 279)
Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the gear selector le-
ver.

388 Technical termsOverspeed range
Engine speeds within the red marking
on the tachometer dial. Avoid this en-
gine speed range, as it may result in se-
rious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.
Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing


engine


clutch/torque converter


transmission


transfer case


drive shaft


differential


axle shafts/axlesProduction options weight
(
page 279)
Program mode selector switch
Used to switch the automatic transmis-
sion between sport operation (S), com-
fort operation (C) and manual
operation (MAN).
PSI
(Pounds per s
quare i
nch)
(
page 280)
Recommended tire inflation pressure
(page 280)
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 en-
gine has been turned off.
Rim
(page 280)RON
(R
esearch O
ctane N
umber)
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.
SBC brake system
(S
ensotronic B
rake C
ontrol)
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 posi-
tion P without SmartKey turned and
brake pedal depressed.

391 Index
A
ABS 79, 385
Indicator lamp 29, 297
Messages in the multifunction
display 306
ABS/ESP
Warning lamp 29, 296
Accelerator position, automatic
transmission 173
Accessory weight 278
Accident
In case of 55
ACL 385
Messages in the multifunction
display 308
Activating
Air circulation mode 188
Air conditioning (cooling) 192
Anti-theft alarm system 91
Central locking (control system) 135
ESP 84
Exterior headlamps 51
Exterior lamps 106
Headlamps 51
High beams 109
Immobilizer 58, 90Manual gearshift program 175
Rear window defroster 181
Residual heat 190
Tow-away alarm 92
Windshield wipers 53
Adding
Coolant 249
Engine oil 248
Additional turn signals (exterior
mirror) 347
Adjusting
Air distribution 187
Air volume 186
Mirrors 43
Seat angle 42
Seat fore and aft 42
Seat height 42
Seats 41
Steering column height 43
Steering column length 43
Steering wheel 42
Air conditioner refrigerant 377
Air conditioning (cooling)
Turning off 192
Turning on 192
Air pressure 278Air pressure see Tire inflation pressure
Air recirculation mode 188
Air volume adjustment 186
Airbags 63
Children 64
Front 68
Head-thorax 68, 69
Knee 68
Passenger 68
Airbrake 31, 87
Automatic mode 89
Emergency braking 89
Manual mode 88
Message in the multifunction
display 318
Test Mode 88
Warning lamp 29, 301
Alarm
Audible 78, 90
Canceling 91, 93
Visual 90
Anticorrosion/antifreeze 376, 381
Antiglare
Automatic 179

392 IndexAnti-theft alarm system 90
Arming 91
Canceling alarm 91
Disarming 91
Anti-theft device
Dust cover 224
Anti-theft systems
Anti-theft alarm system 90
Tow-away alarm 91
Anti-theft wheel nuts 282
Fitting 283
Removing 283
Aquaplaning see Hydroplaning
Ashtray 202
Aspect ratio 278
AUDIO menu 122
Operating CD player 123
Selecting radio station 123
Audio system 31, 143
Audio and telephone, operation 143
Button and soft key operation 146
Cassette operation 152
CD operation 156
Location 143
Operating and display elements 144
Operating safety 143Operation 146
Radio operation 149
Switching off 146
Switching on 146
Telephone operation 160
Auto-dimming for interior rear view
mirror 179
Automatic
Interior lighting control 111
Automatic car wash 290
Automatic central locking
Activating/deactivating (control
system) 135
Automatic climate control 31, 182
Adjusting air distribution 187
Adjusting air volume 185, 186
Air recirculation 188
Center air vents 31
Deactivating 191
Defrosting the windshield 188
MAXCOOL 187
Residual heat utilization 190
Side air vents 31
Temperature sensor 33
Automatic headlamp mode 106Automatic transmission 167
Accelerator position 173
Emergency operation (Limp Home
Mode) 177
Fluid level 248
Gear ranges 170
Gear selector lever 167
Gear selector lever position 167, 171
Gear shifting malfunctions 177
Kickdown 173
Manual shifting 168
One-touch gearshifting 168
Shift program mode selector
switch 173
Steering wheel gearshift control 174
Towing 360
Transmission fluid 248
Automatic transmission fluid 248