2007 MERCEDES-BENZ SL550 automatic central locking

421 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 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.
Switch off the tow-away alarm and the automatic
central locking.
!
If the vehicle is towed with the front axle
raised, the gear selector lever must be in
positionN and the engine must be shut off
(SmartKey in starter switch position0 or1).
Otherwise, the ESP
® will immediately be en-
gaged 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 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 damage to
the transmission, however, we recommend 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-hydraulic 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.

422 Practical hintsTowing the vehicleWarning!
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
increased! Adapt your driving style
accordingly. For more information, see
“Electro-hydraulic brake system”
(page 92).
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.
!
When 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, or
KEYLESS-GO* start/stop button in position2,
the vehicle doors lock if the left front wheel as
well as the right rear wheel are turning at vehicle
speeds of approx. 9 mph (15 km / h) or more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking
(
page 119).
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.
i
To 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 warn-
ing flasher will operate again.
i
If the battery is disconnected or discharged


the SmartKey will not turn in the starter
switch


the gear selector lever will remain locked in
positionP.
For more information, see “Batteries”
(
page 414) and “Jump starting” (
page 419).

453 Index
A
ABC 225
Messages in display 349
Oil level 279
ABS 87
Indicator lamp 29, 334
Messages in the multifunction
display 351, 352
Warning lamp 27, 332
Accelerator position, automatic
transmission 171
Accessory weight 312
Accident 59
Active Body Control see ABC
Air bags 68
Children in the vehicle 83
Front 71
Front passenger front air bag off
indicator lamp 76
Head-thorax 72
Knee bag 72
Occupant Classification System
(OCS) 72
Passenger 72
Air conditioning system see Automatic cli-
mate control systemAir distribution 188, 189
Air pressure 312
Tire inflation pressure 291
Air pump 410
Air recirculation mode 191
Air vents 185
Air volume 188, 190
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 409
Anticorrosion/antifreeze 445, 451
Antiglare, Interior rear view mirror 180
Antilock Brake System see ABS
Anti-theft systems
Anti-theft alarm system 96
Immobilizer 96
Tow-away alarm 98
Aquaplaning see Hydroplaning
Armrest 234
Ashtray 31, 239
Aspect ratio 312
ATF 279
Auto-dimming, Rear view mirrors 180
Automatic central locking 119
Control system 162Automatic climate control system 184
Air conditioning, Cooling 193
Air conditioning refrigerant 446
Air distribution 188, 189
Air recirculation mode 191
Air vents 185
Air volume 188, 190
Control panel 185
Deactivating system 187
Defrosting 183, 190
Residual heat utilization 194
Temperature 188
Temperature sensor 33
Ventilated glove box 195
Automatic lighting control, Interior
lighting 135
Automatic locking when driving 119
Automatic shift program 173
Automatic transmission 168
Accelerator position 171
Comfort program mode 173
Emergency operation
(Limp-Home Mode) 179
Gear ranges 172
Gear selector lever 32, 168
Gear selector lever position 168, 170

455 Index
Center console
Lower part 32
Upper part 31
Central locking
Automatic 119, 162
Central locking/unlocking switch 31,
119
Locking/unlocking from inside 119
Certification label 430
Check engine see Lamps, indicator and
warning
Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System (Advanced TPMS)*,
(Canada only) 298
Children in the vehicle
Air bags 83
Front passenger front air bag off indica-
tor lamp 76, 345
Infant and child restraint systems 83
Occupant Classification System
(OCS) 72
Cigarette lighter 239
Clock 25, 157
Cockpit 24
Cold tire inflation pressure 312COMAND system 31
Driving instructions 268
Combination switch
High beam 56, 133
Turn signals 56
Windshield wipers 57
Consumer battery 281
Control and operation of radio
transmitters 268
Control system 139, 142
Control system menus
AMG Menu 146
AUDIO 149
NAV 151
Settings 153
Standard display 145
TEL* 165
Trip computer 163
Vehicle status message memory 152
Control system submenus 143
Convenience 162
Instrument cluster 156
Lighting 159
Time 157
Vehicle 162
Convenience feature 201Coolant 449
Anticorrosion/antifreeze mixing ratio
and quantity 451
Checking coolant level 280
Coolant warning lamp 337
Messages in the multifunction
display 371, 373
Temperature 270
Temperature gauge 137
Corner-illuminating front fog lamps 132
Corner-illuminating front fog lamps*
Replacing bulbs 397
Courtesy lighting 135
Cruise control 209
Messages in the multifunction
display 352, 353
Cup holder 238
Curb weight 312
D
Daytime running lamp mode 130
Setting 159
Deep water see Standing water
Defogging, Windshield 191
Defrosting, Front 190
Defrosting, Rear 183