suspension MERCEDES-BENZ SL550 2007 R230 Owner's Manual

32 At a glanceCenter consoleLower part
Item
Page
1
Gear selector lever for
automatic transmission
173
2
Parktronic system*
deactivation switch
228
3
Exterior rear view mirror
adjustment
47
4
ABC suspension tuning
button
225
5
Tow-away alarm switch
98
6
Retractable hardtop
open/close switch with
buttons for roll bar
199,
81
Item
Page
7
ABC vehicle level control
button
225
8
ESP
® switch
91
9
Thumbwheel for setting fol-
lowing distance for
Distronic*
221
a
Distance warning function*
on/off switch
224
b
Program mode selector
switch for automatic trans-
mission
177

225 Controls in detail
Driving systems
1Distance warning function switchActivating

Press switch1.
The indicator lamp on the switch
comes on. A loudspeaker symbol ap-
pears in the right multifunction display
(page 217).
Deactivating

Press switch1 once more.
The indicator lamp on the switch goes
out. No loudspeaker symbol appears in
the right multifunction display.
Active Body Control (ABC)
The ABC system is an active, comput-
er-controlled system that hydraulically ad-
justs the suspension at all four wheels in
response to various driving situations. It
automatically selects the optimum suspen-
sion tuning and ride height for your vehicle.
Vehicle level control
Your vehicle automatically adjusts its ride
height to:

increase vehicle safety


reduce fuel consumptionWarning!
G
To help avoid personal injury, keep hands
and feet away from wheel housing area, and
stay away from under the vehicle when low-
ering the vehicle chassis.

227 Controls in detail
Driving systems

Start the engine (
page 52).

Briefly press button3 to change from
one level setting to the next.

The normal level is selected if both
indicator lamps are off.


At level 1, indicator lamp1 is on.


At level 2, both indicator lamps are
on.
When the vehicle is at level 2, pressing
the button will return the vehicle to nor-
mal level.Suspension tuning
The suspension tuning is set according to:


Your driving style


Road surface conditions


The vehicle loading


Your choice of suspension style
You can set the following suspension
styles:


Regular (Comfort)


SportyThe ABC suspension tuning button with the
indicator lamp is located in the lower sec-
tion of the center console.
1ABC suspension tuning button
2Indicator lamp

Start the engine (
page 52).
i
Pressing the button twice in quick succes-
sion will cause the vehicle to immediately raise
or lower to the new vehicle level as selected.
i
The selected setting is stored, even if the en-
gine is turned off.

228 Controls in detailDriving systemsSuspension for sporty driving style
The setting for sporty driving is selected
when indicator lamp2 is illuminated.
Press button1.
Indicator lamp2 comes on.
Suspension for regular driving style
The setting for regular driving is selected
when the indicator lamp2 is off.

Press button1.
Indicator lamp2 goes out.
Parktronic system* (Parking assist)
The Parktronic system is an electronic aid
with ultrasonic sensors. It is designed to
assist the driver during parking maneu-
vers. It visually and audibly indicates the
relative distance between the vehicle and
an obstacle.
The Parktronic system is automatically ac-
tivated when you switch on the ignition, re-
lease the parking brake, or place the gear
selector lever in position D, R, or N. The
Parktronic system deactivates at speeds
exceeding approximately 11 mph
(18 km/h). At lower vehicle speeds the
Parktronic system turns on again. Warning!
G
Parktronic is a supplemental system. It is
not intended to, nor does it replace, the
need for extreme care. The responsibility
during parking and other critical maneuvers
always rests with the driver.
Special attention must be paid to objects
with smooth surfaces or low silhouettes
(e.g. trailer couplings, painted posts, or road
curbs). Such objects may not be detected by
the system and can damage the vehicle.
The operational function of the Parktronic
system can be affected by dirty sensors, es-
pecially at times of snow and ice. See
“Cleaning the Parktronic* system sensors”
(page 326).
Warning!
G
Make sure no persons or animals are in the
area in which you are maneuvering. Other-
wise you run the risk of causing injury.!
Interference caused by other ultrasonic sig-
nals (e.g. working jackhammers, car wash, or the
air brakes of trucks) can cause the system to
send erratic indications, and should be taken
into consideration.

283 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.
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.
Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on re-
treads. The operating safety of the vehicle
cannot be assured when such tires are used.

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).

467 Index
Submenus see Control system submenus
Summer opening feature 201
Sun blind see Sunshade
Sun visors 182
Sunshade 208
Closing 208
Opening 208
Suspension tuning
For regular driving style 228
For sporty driving style 228
Suspension tuning (ABC) 225
Switching on headlamps 55
Symbol
Distance warning function* 217
Synchronizing
ESP
®
355
Power windows 198
Synchronizing time with head unit 157
T
Tachometer 29, 138
Tail lamps 398, 402
Cleaning lenses 325
Technical data
Electrical system 441
Main dimensions 442
Rims and tires 435Weights 443
Windshield and headlamp washer
system 452
Tele Aid 244
Emergency calls 245
Information 248
Initiating an emergency call
manually 246
Messages in display 384
Roadside Assistance 247
SOS button 33, 246
Tele Aid system 244
Telephone* 30, 243
Answering a call 166
Dialing 166
Ending a call 167
Loading phone book* 167
Messages in display 384
Operating 165
Redialing 167
Telephones and two-way radios 268
Temperature
Outside temperature indicator 138
Sensor, Interior 33
Tires 292
Tightening torque 412Time
Settings (control system) 157
TIN 314
Tire
Vehicle maximum load on 314
Tire and Loading Information 287
Tire and loading terminology 312
Tire care and maintenance 284
Tire Identification Number see TIN
Tire inflation pressure
Checking 273, 291, 292
Checking tire pressure electronically
with the Advanced Tire Pressure
Monitoring System (Advanced
TPMS)*, (Canada only) 298
Tire inflation pressure see the placard on
the fuel filler flap
Tire inspection 284
Tire load rating 314
Tire ply composition and material
used 314
Tire speed rating 265, 304, 314
Tire terminology 312
Tire traction 265