air suspension MERCEDES-BENZ SL500 2005 R230 Owner's Manual

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