2005 MERCEDES-BENZ SL600 suspension

220 Controls in detailDriving systemsActive Body Control (ABC)
The ABC system automatically selects the
optimum suspension tuning and ride
height for your vehicle.
Suspension tuning
The suspension tuning is set according to:

Your driving style


Road surface conditions


The vehicle loading


Your choice of suspension style,
“sporty” or “regular”, which you select
using the ABC switch.
The selected suspension style is stored
in memory, even after the SmartKey is
removed from the starter switch.The ABC switch with the indicator lamp is
located in the lower section of the center
console.
1ABC switch
2Indicator lamp

Start the engine (
page 48).Suspension for sporty driving style
The setting for sporty driving is selected
when indicator lamp2 is illuminated.

Press switch1.
Indicator lamp2 comes on.
Suspension for regular driving style
The setting for regular driving is selected
when the indicator lamp2 is off.

Press switch1.
Indicator lamp2 goes out.

279 Operation
Tires and wheels
Tires and wheels
See an authorized Mercedes-Benz Center
for information on tested and
recommended rims and tires for summer
and winter operation. They can also offer
advice concerning tire service and
purchase.
Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on
retreads. The operating safety of the
vehicle cannot be assured when such tires
are used.
See an authorized Mercedes-Benz Center
for information on tested and
recommended rims and tires for summer
and winter operation.
Important guidelines

Only use sets of tires and rims of the
same type and make.


Tires must be of the correct size for the
rim.


Break in new tires for approximately
60 miles (100 km) at moderate
speeds.


Regularly check the tires and rims for
damage. Dented or bent rims can
cause tire inflation pressure loss and
damage to the tire beads.


If vehicle is heavily loaded, check tire
inflation pressure and correct as
required.


Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths under
1/8in (3 mm).


When replacing individual tires, you
should mount new tires on the front
wheels first (on vehicles with
same-sized wheels all around).
Warning!
G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the
original part. See an authorized
Mercedes-Benz Center for further informa-
tion. If incorrectly sized rims and tires are
mounted:

The wheel brakes or suspension
components can be damaged.


The operating clearance of the wheels
and the tires may no longer be correct.
Warning!
G
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
When replacing rims, only use genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can
result in the bolts loosening and possibly an
accident.

408 Practical hintsTowing the vehicleMercedes-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).

410 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 in-
creased! Adapt your driving style according-
ly. For more information, see “SBC brake
system” (
page 85).
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 follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, or KEYLESS-GO*
start/stop button in position2, the ve-
hicle doors lock if the left front wheel
as well as the right rear wheel are turn-
ing at vehicle speeds of approx. 9 mph
(15 km / h) or more.
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 110).
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.
iIf the battery is disconnected or dis-
charged

the SmartKey will not turn in the
starter switch


the gear selector lever will remain
locked in positionP.
For more information, see “Batteries”
(
page 401) and
“Jump starting” (
page 406).

461 Index
Service System see Vehicle Maintenance
System
Setting 150
Convenience functions 157
Daytime running lamp mode 152
Digital clock 23
Distronic* time interval 216
Exterior rear view mirror parking
position 158
Instrument lighting 131
Interior lighting delayed
switch-off 155
Key-dependent memory 158
Lamps and lighting (control
system) 152
Locator lighting 153
Lower speed in cruise control 207
Miles/kilometers in
speedometer 148
Multifunction display language 149
Night security illumination 154
Radio station 140
Slower speed in cruise control 207Speedometer display mode 148
Suspension tuning 220
Temperature (interior) 185
Temperature indicator 148
Time (control system) 149
Time display mode 151
Tire inflation pressure units 156
Units
Temperature 148
Tire inflation pressure 156
Units in speedometer 148
Vehicle level control 221
Setting current speed
Cruise control 206
Setting last stored speed
Distronic* 215
Setting speed
Cruise control 207
Distronic* 214
Setting the time (hours) 150
Setting the time (minutes) 151Setting to last stored speed
Cruise control 208
Settings
Calling up Distronic* 142, 212
Convenience functions 157
Factory (SmartKey) 96
Resetting all (control system) 145
Selective (SmartKey) 96
Settings menu
Individual vehicle settings 144
Submenus 145
Shifting
Gear selector lever 164
Gear selector lever positions 168
Into optimal gear range (Automatic
transmission) 166
Shoulder support
Seat adjustment 116
Side air vents 29
Side marker lamps 381, 384

463 Index
Starter battery 277, 401
Starter switch 23, 36
Starter switch positions 36
SmartKey 36
SmartKey with KEYLESS-GO* 37
Starting difficulties 49
Starting position 36
Starting the engine
With the SmartKey 48
With the SmartKey with
KEYLESS-GO* 49
Steering column
In/out adjustment 42
Length adjustment 42
Up/down adjustment 42
Steering wheel
Adjusting 42
Buttons 28
Cleaning 320
Heating* 234
Height adjustment 42Steering wheel adjustment lever 23
Steering wheel gearshift control 172
Vehicles with Sport Package*172
SL 55 AMG and SL 65 AMG 174
Stopping
Windows 195
Storage compartments 228
Armrest 229
Cup holder 228
Glove box 228
In door 229
In rear 230
Locking compartments
separately 230
Locking storage compartments 230
Rear 230
Storage tray 230
Unlocking compartments
separately 231
Unlocking storage
compartments 231, 375
Ventilated compartments 192Storing tires 281
Submenus 138
Convenience 157
Instrument cluster 148, 149
Lighting 152
Resetting functions 146
Selecting 145
Settings menus 145
Time 149
Vehicle 156
Summer opening feature 200
Sun blind see Sunshade
Sun visors 180
Sunshade 203
Closing 204
Opening 204
Suspension tuning
For regular driving style 220
For sporty driving style 220
Setting 220