2011 MERCEDES-BENZ SL CLASS tow bar

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
0027 (USA only) or 004D (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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The wind screen is stored in the trunk.
Installing
XLeave the wind screen folded and place it
on the roll bar.
XMake sure the fastening straps are
unbuckled.
XSlide the wind screen into the roll bar until
guide tabs \000F on each side latch
underneath the roll bar.
Make sure the fastening straps do not get
caught.
iThe fastening straps must be directed
into the vehicle interior.
XAdjust the roll bar to a height (Y page 51)
that allows you to reach easily underneath
it.
XGuide the fastening straps around the top
of the roll bar and close buckles \000G.
XTighten the fastening straps if necessary.XLower the roll bar (Y page 51).XFold the upper section of the wind screen
up towards the head restraints until it
stops.
Removing
XFold the upper section of the wind screen
back.
XAdjust the roll bar to a height (Y page 51)
that allows you to reach easily underneath
it.
XUndo the buckles on the upper section of
the roll bar by pressing release button \000F.
XLower the roll bar (Y page 51).
Make sure the fastening straps do not get
caught.
XPull the wind screen out towards the front
of the vehicle.
Be careful not to damage interior trim with
the guide tabs.
XStore the wind screen in a safe place.
Luggage cover
The luggage cover covers luggage/cargo in
the trunk.
158Retractable hardtopControls in detail
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Symbol messages
BrakeDisplay messagesPossible causes/consequences and 0050 Solutions0051Reduced
Brake
Effect
Depress
brake
pedal
fully.The electro-hydraulic brake system is in emergency operation
mode. Considerably greater brake pedal force is required and
the brake pedal travel is longer. The stopping distance is
increased.
The maximum speed is limited to 55 mph (90 km/h).XStop the vehicle in a safe location or as soon as it is safe
to do so.XEngage the parking brake.XDo not drive any further.XPrevent the vehicle from rolling away by blocking the
wheels with wheel chocks or other sizeable objects.XContact an authorized Mercedes-Benz Center or call
Roadside Assistance.0027
(USA only)
004D
(Canada
only)Reduced
Brake
Effect
Service
RequiredThe electro-hydraulic brake system is in emergency operation
mode. Considerably greater brake pedal force is required and
the brake pedal travel is longer. The stopping distance is
increased.XStop the vehicle in a safe location or as soon as it is safe
to do so.XEngage the parking brake.XDo not drive any further.XPrevent the vehicle from rolling away by blocking the
wheels with wheel chocks or other sizeable objects.XContact an authorized Mercedes-Benz Center or call
Roadside Assistance.GWarning!
Driving while one of the previous messages is
displayed can result in an accident. Have your
brake system checked immediately.
If the electro-hydraulic brake system enters
its emergency operation mode, the driver
must apply significantly greater brake pedal
pressure and depress the pedal much further
than normal to obtain 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 recommendedVehicle status messages in the multifunction display237Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 237Z

Removing towing eye boltXLoosen towing eye bolt 0047 by turning it
counterclockwise.XUnscrew towing eye bolt 0047.XReinstalling front cover: Fit locking tabs
of cover 0046 (Y page 288) under the lower
edge of the opening in the bumper.XApply even pressure on the upper part of
the cover until it snaps into place.XReinstalling rear cover: Fit cover 0046
( Y page 288) and snap it into place.XStore the towing eye bolt 0047 and wheel
wrench back into the vehicle tool kit.
Towing with 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).
XMake sure the ignition is switched on.XWith the vehicle at a standstill, depress the
brake pedal and keep it pressed.XShift the automatic transmission into
neutral position N.XRelease the brake pedal.XIf engaged, release the parking brake.XSwitch off the automatic central locking
( Y page 126).XSwitch off the ignition and leave the
SmartKey in the starter switch.XSwitch on the hazard warning flasher
( Y page 92).
!
Because the ESP ®
operates
automatically, the engine and ignition must
be shut off (SmartKey in starter switch
position 0 or 1 or KEYLESS-GO start/stop
button in position 0 or 1) when the vehicle
is being towed with the front axle raised.
Active braking action through the ESP ®
may otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
Towing with all wheels on the groundGWarning!
If circumstances require towing the vehicle
with all wheels on the ground, always tow with
a tow bar if:
R the engine will not run
R there is a malfunction in the electro-
hydraulic brake system
R there is a malfunction in the power supply
or in the vehicle’s electrical system
This is necessary to adequately control the
towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make sure the SmartKey is in
starter switch position 2.
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.
XMake sure the ignition is switched on.XWith the vehicle at a standstill, depress the
brake pedal and keep it pressed.XShift the automatic transmission into
neutral position N.XRelease the brake pedal.XIf engaged, release the parking brake.XSwitch on the hazard warning flasher
( Y page 92).
!
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).
i While being towed with the hazard
warning flasher in use, use the combination
switch in the usual manner to signal turns.
Only the selected turn signal will operate.
Upon canceling the turn signal, the hazard
warning flasher will operate again.
290Towing the vehiclePractical hints
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