Electro-hydraulic brake system
The electro-hydraulic brake system combines
a hydraulic brake circuit with electronically
controlled brake servo assistance. You have
increased braking safety and improved
braking comfort.GWarning!
Never ignore a brake malfunction indicated in
the speedometer display, for example by the
$ (USA only) or J (Canada only)
indicator lamp. Refer to the “Practical hints”
section. Also read and observe the messages
in the instrument cluster multifunction
display.
For information on warning and indicator
lamps, see the “Practical hints” section
( Y page 255). For information on the
messages that may appear in the
multifunction display, see the “Practical
hints” section ( Y page 227) and
( Y page 237).
GWarning!
The electro-hydraulic brake system requires
electrical power to operate.
A malfunction in the vehicle’s power supply or
electrical system may impair brake system
operation and switch it into its emergency
operation mode. In such a case, the red brake
warning lamp comes on and warning
messages appear in the multifunction display
while driving. To brake, the driver must then
apply significantly greater brake pedal
pressure and depress the pedal much further
to obtain the expected braking effect. If
necessary, apply full pressure to the brake
pedal. Brakes are only applied to the front
wheels. Stopping distance is increased!
If there is a malfunction in the electro-
hydraulic brake system, we recommend that
the vehicle be transported with all wheels off
the ground using flatbed or appropriate wheel
lift/dolly equipment.
A tow bar must be used if circumstances do
not permit the use of the recommended
towing methods and the vehicle requires
towing with all four wheels on the ground.
Towing the vehicle with all four wheels on the
ground is only permissible for distances up to
30 miles (50 km) and at a speed not to exceed
30 mph (50 km/h). For more information, see
the “Towing the vehicle” section in this
Operator’s Manual.
The electro-hydraulic brake system is
activated automatically when you
R unlock the vehicle with the SmartKey or
with KEYLESS-GO
R open the driver’s or passenger door
R turn the SmartKey in the starter switch to
position 1
R press the start/stop button on the gear
selector lever once (vehicles with
KEYLESS-GO)
R depress the brake pedal
R release the parking brake
If the electro-hydraulic brake system is
activated as the brake pedal is first
depressed, you may feel a reduced pedal
resistance and longer pedal travel than
normal. When releasing the pedal, you may
also feel the brake pedal pulsate and you may
hear a sound which is caused by the
activation of the electro-hydraulic brake
system pump. This is normal and not an
indication of a malfunction. Pedal travel
returns to normal when you release the brake
pedal and the sound soon ceases.
If you experience the above while driving and
the red brake warning lamp illuminates
and/or warning messages appear in the
multifunction display, the brake system is
malfunctioning. Follow the instructions of the
warning message(s) and have the brake
system checked immediately.GWarning!
Have brake pad replacement and other work
on the electro-hydraulic brake system carried
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out by qualified technicians only. Contact an
authorized Mercedes-Benz Center for further
information.
The electro-hydraulic brake system must be
deactivated prior to working on the system.
High pressure is intermittently built up in the
system as part of its automatic self-test.
In addition, the system is automatically
activated when the vehicle is unlocked by
remote control, when the driver or passenger
door is opened, when the SmartKey in the
starter switch is turned to position 1 or the
KEYLESS-GO start/stop button is pressed
once, when the brake pedal is depressed or
when the parking brake is released. Failure to
deactivate the system prior to maintenance
will cause brake pistons to extend and brake
fluid to leak, which may result in injuries
(contusions and acid burns). Extended brake
pistons may also cause injury.
The electro-hydraulic brake system switches
off automatically
R approximately 2 minutes after you turned
the SmartKey in the starter switch to
position 0 or removed the SmartKey
R approximately 2 minutes after you pressed
the KEYLESS-GO start/stop button to turn
off the engine or power supply and opened
the driver’s door (with driver’s door open,
the starter switch is set to position 0, same
as SmartKey removed from starter switch)
R approximately 20 seconds after you locked
the vehicle from outside
For more information on your vehicle’s
brakes, see the “Driving instructions” section
( Y page 210).
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
ActivatingXWith SmartKey: Remove the SmartKey
from the starter switch.XWith KEYLESS-GO: Turn off the engine and
open the driver’s door.
Deactivating
XSwitch on the ignition.
i Starting the engine will also deactivate
the immobilizer.
In the event that the engine cannot be
started (yet the vehicle’s battery is
charged), the system is not operational.
Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in the
USA) or 1-800-387-0100 (in Canada).
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens
R a door
R the trunk
R the hood
R a storage compartment in the rear
R the glove box
R the storage compartment under the
armrest
The alarm will stay on even if the activating
element, a door, for example, is closed
immediately.
The alarm system will also be triggered when
R the vehicle is raised (tow-away alarm)
R the vehicle is opened with the mechanical
key
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Wiping with washer fluidXPress the combination switch in direction
of arrow A past the resistance point.
The windshield wipers operate with washer
fluid.
i To prevent smears on the windshield or
noisy/chattering wiper blades, wipe with
washer fluid every now and then even when
it is raining.
For information on filling up the washer
reservoir, see “Washer system and headlamp
cleaning system” ( Y page 185).
For information on cleaning the headlamps
with washer fluid, see “Headlamp cleaning
system” ( Y page 93).
Problems with wipers
! If anything blocks the windshield wipers
(leaves, snow, etc.), switch them off
immediately.
For safety reasons, do the following before
attempting to remove any blockage:
R Stop the vehicle in a safe location.
R Remove the SmartKey from the starter
switch.
or
R Turn off the engine by pressing the
KEYLESS-GO start/stop button and
open the driver’s door (with the driver’s
door open, starter switch is in position
0 , same as with SmartKey removed from
starter switch).
R Engage the parking brake.
R Remove blockage.
R Turn the windshield wipers on again.
If the windshield wipers fail to function at
all with the combination switch in position
I ,
R set the combination switch to the next
higher wiper speed
R have the windshield wipers checked at
the nearest authorized Mercedes-Benz
Center
Power windows
Opening and closing
The windows are opened and closed
electrically. The switches for all windows are
located on the driver’s door. The switch for
operating the passenger-side windows is
located on the passenger door.
GObserve Safety notes, see page 51.GWarning!
When closing the windows, make sure there
is no danger of anyone being harmed by the
closing procedure.
The door windows are equipped with the
express operation and automatic reversal
function. If in express operation mode a door
window encounters an obstruction that
blocks its path, the automatic reversal
function will stop the door window and open
it slightly.
The door windows operate differently when
the switch is pulled and held. See the “Closing
when a door window is blocked” section for
details.
The closing of the door windows can be
immediately halted by releasing the switch or,
if the switch was pulled past the resistance
point and released, by pressing or pulling the
respective switch.
The closing of the rear side windows can be
immediately halted by releasing the switch.
If a window encounters an obstruction that
blocks its path in a circumstance where you
are closing the windows by pressing and
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XClosing: Close the door window.XPull and hold switch : or ;.
The corresponding rear side window moves
upward until you release the switch.
Closing with KEYLESS-GO
When locking the vehicle, you can
simultaneously close the windows.
XPress and hold the lock button on an
outside door handle ( Y page 71) until the
windows are completely closed.XRelease the lock button on the outside door
handle to interrupt the closing procedure.
Synchronizing power windows
The windows must be synchronized after the
battery has been disconnected or if the
windows cannot be fully closed (express
operation).
Each window must be synchronized
separately.
XClose all doors.XSwitch on the ignition.XPull and hold switch : or ; (Y page 97)
until the respective window is closed.
The window opens again slightly.XPull and hold the respective switch once
more immediately until the window is
closed completely.XHold the respective switch for
approximately 1 second.
The window is synchronized.
Driving and parking
Safety notes
GWarning!
Make sure absolutely no objects are
obstructing the pedals’ range of movement.
Keep the driver’s footwell clear of all
obstacles. If there are any floormats or
carpets in the footwell, make sure the pedals
still have sufficient clearance.
During sudden driving or braking maneuvers
the objects could get caught between or
under the pedals. You could then no longer
brake or accelerate. This could lead to
accidents and injury.GWarning!
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
vehicle. Adapt your driving accordingly.
Starting the engine
GWarning!
Inhalation of exhaust gas is hazardous to your
health. All exhaust gas contains carbon
monoxide (CO), and inhaling it can cause
unconsciousness and possible death.
Do not run the engine in confined areas (such
as a garage) which are not properly ventilated.
If you think that exhaust gas fumes are
entering the vehicle while driving, have the
cause determined and corrected
immediately. If you must drive under these
conditions, drive only with at least one
window fully open at all times.
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Automatic transmission
Gearshift pattern for automatic transmission
jPark position with gear selector lever lockkReverse geariNeutral positionhDrive position
For more information, see “Automatic
transmission” (Y page 103).
XMake sure the automatic transmission is in
park position P.
With SmartKey
XDo not depress the accelerator pedal.XTurn the SmartKey in the starter switch to
position 3 (Y page 78) and release it.
The engine starts automatically.
With KEYLESS-GO
GWarning!
As long as the SmartKey is in your vehicle, the
vehicle can be started. Therefore, never leave
children unattended in the vehicle, as they
could otherwise accidentally start the engine.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Do
not leave children unattended in the vehicle,
or with access to an unlocked vehicle. A
child’s unsupervised access to a vehicle could
result in an accident and/or serious personal
injury.
You can start your vehicle without the
SmartKey in the starter switch using the
KEYLESS-GO start/stop button.
The SmartKey must be located in the vehicle.
KEYLESS-GO start/stop button
:USA only;Canada onlyXDepress the brake pedal during the starting
procedure.
XDo not depress the accelerator pedal.XPress the KEYLESS-GO start/stop button
once.
The engine starts automatically.
Starting difficulties
! Remember that extended starting
attempts can drain the battery.
The engine does not start. You can hear
the starter.
There could be a malfunction in the engine
electronics or in the fuel supply system.
Carry out the following steps:
XIf you are starting the engine with the
SmartKey: Turn the SmartKey in the starter
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switch to position 0 and repeat the starting
procedure.XIf you are starting the engine with KEYLESS-
GO: Close any doors that may be open to
allow for better detection of the SmartKey.
or
XStart the engine with the SmartKey as radio
signals from another source may be
interfering with the KEYLESS-GO function.XRepeat the starting procedure.
If the engine does not start after several
starting attempts:
XContact an authorized Mercedes-Benz
Center or call Roadside Assistance.
The engine does not start. You cannot
hear the starter.
The battery may not be charged sufficiently.
XGet a jump start ( Y page 285).
If the engine will not start despite a jump
start:
XContact an authorized Mercedes-Benz
Center or call Roadside Assistance.
The starter has been exposed to excessive
temperatures.
XLet the starter cool for about 2 minutes.XRepeat the starting procedure.
If the engine does not start after several
starting attempts:
XContact an authorized Mercedes-Benz
Center or call Roadside Assistance.
Driving off
GWarning!
On slippery road surfaces, never downshift in
order to obtain braking action. This could
result in drive wheel slip and reduced vehicle
control. Your vehicle’s ABS will not prevent
this type of loss of control.
! Do not run a cold engine at high engine
speeds. Running a cold engine at high
engine speeds may shorten the service life
of the engine. This is not covered by the
Mercedes-Benz Limited Warranty.
SL 63 AMG: At engine temperatures below
68‡ (20†), the engine’s maximum speed
is restricted in order to protect it from
damage. Avoid driving your vehicle at full
speed when the engine is cold to prevent
premature engine wear and/or diminished
comfort.
! If an acoustic warning sounds and the
message Release Parking Brake
appears in the multifunction display when
driving off, you have forgotten to release
the parking brake.
Release the parking brake.
! Avoid spinning of a drive wheel. This may
cause serious damage to the drivetrain
which is not covered by the Mercedes-Benz
Limited Warranty.
! Simultaneously depressing the
accelerator pedal and applying the brakes
reduces engine performance and causes
premature brake and drivetrain wear which
is not covered by the Mercedes-Benz
Limited Warranty.
i Once the vehicle is in motion, the
automatic central locking function engages
and the locking knobs in the doors move
down.
The automatic central locking function can
be switched off ( Y page 126).
Automatic transmissionGWarning!
It is dangerous to shift the automatic
transmission out of park position P or neutral
position N if the engine speed is higher than
idle speed. If your foot is not firmly on the
brake pedal, the vehicle could accelerate
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quickly forward or in reverse. You could lose
control of the vehicle and hit someone or
something. Only shift into gear when the
engine is idling normally and when your right
foot is firmly on the brake pedal.
! Only shift the automatic transmission into
reverse gear R or park position P when the
vehicle is stopped. Otherwise the
automatic transmission could be damaged.XDepress the brake pedal.
The gear selector lever lock is released.XShift the automatic transmission into drive
position D or reverse gear R.
i
Shifting the automatic transmission out of
park position P is only possible with the
brake pedal depressed.
Only depressing the brake pedal releases
the gear selector lever lock.
XWait for the gear selection process to
complete before setting the vehicle in
motion.XIf engaged, release the parking brake.XRelease the brake pedal.XCarefully depress the accelerator pedal.
After a cold start, the automatic transmission
shifts at a higher engine speed. This allows
the catalytic converter to reach its operating
temperature earlier.
For more information on driving, see “Driving
instructions” ( Y page 209).
Problems while driving
The engine runs erratically and misfires
R An ignition cable may be damaged.
R The engine electronics may not be
operating properly.
R Unburned gasoline may have entered the
catalytic converter and damaged it.
XGive very little gas.XHave the problem checked at an authorized
Mercedes-Benz Center as soon as possible.
The coolant temperature is above
248‡ (120†)
The coolant is too hot and is no longer cooling
the engine.
XStop the vehicle in a safe location as soon
as possible.XTurn off the engine immediately.XAllow the engine and coolant to cool off.XCheck the coolant level and add coolant if
necessary ( Y page 184).
In case of accident
If the vehicle is leaking fuel:
XDo not start the engine under any
circumstances.XExit the vehicle at a safe distance from the
roadway.XNotify local fire and/or police authorities.
If the extent of the damage cannot be
determined:
XContact an authorized Mercedes-Benz
Center or call Roadside Assistance.
If no damage on major assemblies, fuel
system, and engine mount can be
determined:
XStart the engine in the usual manner.
Parking
GWarning!
Do not park this vehicle in areas where
combustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system. These materials could be
ignited and cause a vehicle fire.
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Vehicle movement may result in serious
personal injury or damage to the vehicle or
vehicle drivetrain. Therefore, always do the
following before turning off the engine and
leaving the vehicle:
RKeep right foot on the brake pedal.
REngage the parking brake.
RShift the automatic transmission into park
position P.
RSlowly release the brake pedal.
RWhen parked on an incline, always turn the
front wheels towards the road curb.
RTurn the SmartKey in the starter switch to
position 0 and remove the SmartKey from
the starter switch, or press the KEYLESS-
GO start/stop button.
RTake the SmartKey with you and lock the
vehicle when leaving.
Parking brake
GWarning!
Engaging the parking brake while the vehicle
is in motion can cause the rear wheels to lock
up. You could lose control of the vehicle and
cause an accident. In addition, the vehicle’s
brake lights do not light up when the parking
brake is engaged.
GWarning!
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it with
you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children could
release the parking brake and/or shift the
automatic transmission out of park position
P, either of which could result in an accident
and/or serious personal injury.
XReleasing: Pull on release handle :.
When the ignition is switched on or the
engine is running, the brake warning lamp
$ (USA only) or J (Canada only) in
the instrument cluster goes out.
XEngaging: Step on parking brake
pedal ; firmly.
When the engine is running, the brake
warning lamp $ (USA only) or J
(Canada only) in the instrument cluster
comes on.
Turning off the engine
GWarning!
Do not turn off the engine before the vehicle
has come to a complete stop. 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 vehicle.
XShift the automatic transmission into park
position P.
XEngage the parking brake.
iAlways engage the parking brake in
addition to shifting the automatic
transmission into park position P.
With SmartKey
XTurn the SmartKey in the starter switch to
position 0.
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