251 Driving instructions
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index CL 55 AMG:
Your vehicle is factory equipped with “Y”-rated tires,
which have a speed rating of 188 mph (300 km / h).
An electronic speed limiter prevents your vehicle from
exceeding a speed of 155 mph (250 km/h).
Despite the tire rating, local speed limits should be
obeyed. Use prudent driving speeds appropriate to
prevailing conditions.Snow chains
Use only snow chains that are tested and recommended
by Mercedes-Benz. Your authorized Mercedes-Benz
Center will be glad to advise you on this subject.
Chains should only be used on the rear wheels. Follow
the manufacturer’s mounting instructions.
Always select option I or II of the level control system
when driving with snow chains, see page 283.
Snow chains should only be driven on snow covered
roads at speeds not to exceed 30 mph (50 km/h).
Remove chains as soon as possible when driving on
roads without snow.
When driving with snow chains, press the ESP control
switch to OFF, refer to page 280.
Important!
Use of snow chains is not permissible with tire sizes
245 / 45 R18 or 275 / 40 R18.
Wa r n i n g !
Even when permitted by law, never operate a
vehicle at speeds greater than the maximum speed
rating of the tires.Exceeding the maximum speed for which tires are
rated can lead to sudden tire failure causing loss of
vehicle control and resulting in personal injury
and possible death.
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253 Driving instructions
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Winter driving
Have your vehicle winterized at your authorized
Mercedes-Benz Center before the onset of winter.
•Change the engine oil if the engine contains an oil
which is not approved for winter operation. For
viscosity (SAE/CCMC class) and filling quantity,
seepage401.
•Check engine coolant anticorrosion/antifreeze
concentration.
•Additive for the windshield washer and headlamp
cleaning system: Add MB Concentrate “S” to a
premixed windshield washer solvent/antifreeze
which is formulated for below freezing
temperatures, see page 340.•Test battery: Battery capacity drops with decreasing
ambient temperature. A well charged battery helps
to ensure that the engine can be started, even at low
ambient temperatures.
•Tires: We recommend M+S rated radial-ply tires on
all four wheels for the winter season. Observe
permissible maximum speed for M+S rated
radial-ply tires and the legal speed limit.
In winter operation, the maximum effectiveness of the
ABS and ESP can only be achieved with M+S rated
radial-ply tires and/or snow chains recommended by
Mercedes-Benz. Snow chains maximize performance.
Block heater (Canada only)
The engine is equipped with a block heater.
The electrical cable may be installed at your authorized
Mercedes-Benz Center.
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258 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Notes:
If the engine does not brake the vehicle sufficiently
while driving on a downgrade, the speed you set on the
cruise control may be exceeded. In this case the
automatic transmission shifts down (max. to 3rd gear)
to maintain the set cruise control speed by using the
engine’s braking power.
As soon as the grade eases, the automatic transmission
shifts up again dependent on the selector lever position.
Nevertheless, in some cases you may have to step on the
brake pedal to slow down. In this case the cruise control
is switched off.
Use the lever to resume the previously set speed.
The “CRUISE CONTROL - - -” message is displayed on
the multifunction display when any attempt is made to
store speeds below 25 mph (40 km/h) or when an
attempt is made to recall a speed when no speed has
been stored – the cruise control remains switched off.
See malfunction and warning messages on page 303 if
the cruise control has a malfunction.
Wa r n i n g !
Only use the cruise control if the traffic and
weather conditions make it advisable to travel at a
steady speed.• The use of cruise control can be dangerous on
winding roads or in heavy traffic because
conditions do not allow safe driving at a steady
speed.
• The use of cruise control can be dangerous on
slippery roads. Rapid changes in tire adhesion
can result in wheel spin and loss of control.The “Resume” function should only be operated if
the driver is fully aware of the previously set speed
and wishes to resume this particular preset speed.
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260 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Note:
For operation in the USA only: This device complies
with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
Any unauthorized modification to this device could void
the user’s authority to operate the equipment.
.Wa r n i n g !
Only use Distronic if the traffic and weather
conditions make it advisable to travel at a steady
speed.Use of Distronic can be dangerous on winding
roads or in heavy traffic because conditions do not
allow safe driving at a steady speed.
Use of Distronic can be dangerous on slippery
roads. Rapid changes in tire adhesion can result in
wheel spin and loss of control.
Distronic does not act upon adverse sight distance
conditions. Do not use Distronic during conditions
of fog and heavy rain, snow or sleet.The “Resume” function should only be operated if
the driver is fully aware of the previously set speed
and wishes to resume this particular preset speed.Distronic does not recognize accordingly and will
not react to stationary objects. It is designed and
intended only to maintain a set speed and keep a
set distance from moving objects in front of it.
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271 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Distronic settings
1Switch – for distance warning function
2Thumbwheel – for setting distance
Distronic provides a range of following distances to the
vehicle in front. The medium setting is noticeable by a
detent in the center position of the thumbwheel (2).
If you want to:
•Increase distance – turn thumbwheel (2)
towards¯.•Decrease distance – turn thumbwheel (2)
towards®.
To switch the distance warning function on or off:
To switch on – press upper half of switch (1).
The indicator lamp in the switch lights up. If the
Distronic menu is active in the multifunction display, a
loudspeaker symbol appears.
To switch off – press lower half of the switch (1).
The indicator lamp in the switch goes out. If the
Distronic menu is active in the multifunction display,
the loudspeaker symbol disappears.
See page 270 for distance warning function and
page 273 for multifunction displays.
Wa r n i n g !
It is up to the driver to exercise discretion to select
the appropriate setting given road conditions,
traffic, driver’s preferred driving style and
applicable laws and driving recommendations for
safe following distance.
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273 Driving systems
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data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Multifunction displays1Distronic is deactivated. The actual distance (5) and
the should-be distance (6) to the vehicle ahead (4)
are displayed.
2Activating Distronic. The display shows the selected
speed for approx. 5 seconds.
3Distronic is activated. The message
“DISTRONIC OFF” appears for approx. 5 seconds
when Distronic is being deactivated.
4Vehicle ahead.
Only appears if a vehicle is detected ahead.
5Actual distance to vehicle ahead.
6Should-be distance to vehicle ahead (as calculated
by Distronic).
7Own vehicle.
8Distance warning function is activated, see
page 270.
To call up Distronic display:
Press button è or ÿ on the multifunction
steering wheel repeatedly until the display (1 or 3)
appears.
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276 Driving systems
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cluster displayPractical hints Car care Index
Antilock brake system (ABS)
Important!
The ABS improves steering control of the vehicle during
hard braking maneuvers.
The ABS prevents the wheels from locking up above a
vehicle speed of approximately 5 mph (8 km/h)
independent of road surface conditions.At the instant one of the wheels is about to lock up, a
slight pulsation can be felt in the brake pedal,
indicating that the ABS is in the regulating mode. Keep
firm and steady pressure on the brake pedal while
experiencing the pulsation.
Continuous steady brake pedal pressure results in
applying the advantages of the ABS, namely braking
power and ability to steer the vehicle.
In the case of an emergency brake maneuver keep
continuous full pressure on the brake pedal. In this
manner only can the ABS be most effective.
On slippery road surfaces, the ABS will respond even
with light brake pedal pressure because of the
increased likelihood of locking wheels. The pulsating
brake pedal can be an indication of hazardous road
conditions and functions as a reminder to take extra
care while driving.
Wa r n i n g !
Do not pump the brake pedal, rather use firm,
steady brake pedal pressure. Pumping the brake
pedal defeats the purpose for ABS and significantly
reduces braking effectiveness.
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278 Driving systems
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Electronic stability program (ESP)
The ESP enhances directional control and reduces
driving wheel spin of the vehicle under various driving
conditions.
Over/understeering of the vehicle is counteracted by
applying brakes to the appropriate wheel to create a
countervailing vehicle movement. Engine torque is also
limited. The ESP warning lamp, located in the
speedometer dial, starts to flash when ESP is in
operation.Important!
If the ESP warning lampv flashes:
•During take-off apply as little throttle as possible.
•While driving ease up on the accelerator.
•Adapt your speed and driving to the prevailing road
conditions.
•Do not switch off the ESP.
Caution!
If the vehicle is towed with the front axle raised (see
page 357, towing the vehicle), the engine must be shut
off (electronic key in starter switch position 0 or 1).
Otherwise, the ESP will immediately be engaged and
will apply the rear wheel brakes.
Wa r n i n g !
ESP cannot prevent the natural laws of physics
from acting on the vehicle, nor can it increase the
traction afforded. The ESP cannot prevent
ac c id ent s, i nc l udi ng t hose resul tin g from exc es si ve
speed in turns, or aquaplaning. Only a safe,
attentive, and skillful driver can prevent accidents.
The capabilities of an ESP equipped vehicle must
never be exploited in a reckless or dangerous
manner which could jeopardize the user’s safety or
the safety of others.
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