2010 MERCEDES-BENZ CL550 Owner's Manual

i
After 60
seconds with an unfastened seat belt the warning chime stops sounding and the
seat belt telltale illuminates continuously. The seat belt telltale will only go out if both, the
driver and front passenger’s seat belt are fastened, or the vehicle is standing still and a door
is opened. Problem
Possible causes/consequences and
X Solutions6
The red SRS
indicator lamp
comes on while
driving. There is a malfunction in the restraint systems. The air bags or
Emergency
Tensioning

Devices (ETDs) could deploy unexpectedly
or fail to activate in an accident.
X Drive with added caution to the nearest authorized Mercedes-
Benz Center. G
Warning!
In the event a malfunction of the SRS is
indicated as

outlined above, the SRS may not
be operational.
For your safety, we strongly recommend that
you contact an authorized Mercedes-Benz Center immediately to have the system
checked. Otherwise the SRS may not be
activated
when

needed in an accident, which
could result in serious or fatal injury, or it
might deploy unexpectedly and unnecessarily
which could also result in injury. What to do if …
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Problem
Possible causes/consequences and
X Solutionså
The yellow ESC
OFF warning
lamp comes on
while the engine
is running. The ESC has been switched off.
Risk of accident!
When
the
ESC is switched off it will not stabilize the vehicle if the
system recognizes that the vehicle starts to skid or that a wheel
is spinning.
X Switch the ESC back on.
Exceptions: ( Y

page 60).
X If leaving the ESC switched off, adapt your speed and driving to
the prevailing road and weather conditions.
X If the ESC cannot be switched back on: Have the system
checked at an authorized Mercedes-Benz Center as soon as
possible. ÷
å
The yellow ESC
warning lamp
and the yellow
ESC OFF
warning lamp
come on while
the engine is
running. The ESC is not operational due to a malfunction.
The ABS, the BAS, the BAS PLUS, the hill-start assist system, the
HOLD
function,

the Adaptive Brake Lights, the PRE-SAFE ®
system,
and the PRE-SAFE ®
Brake are also switched off.
The brake system is still functioning normally but without the
systems specified above available.
X Read and observe additional messages that may appear in the
multifunction display.
X Continue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.
X Adapt your speed and driving to the prevailing road and weather
conditions.
X Have the system checked at an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions increases the risk of an
accident. ÷
The yellow ESC
warning lamp
flashes while
driving. The ESC or the ETS/4-ETS has come into operation because of
detected traction loss in at least one tire.
X
When driving off, apply as little throttle as possible.
X While driving, ease up on the accelerator pedal.
X Adapt your speed and driving to the prevailing road and weather
conditions.
X Do not deactivate the ESC.
Exceptions: (Y

page 60).
Failure to follow these instructions increases the risk of an
accident. 456
What to do if …
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Driving systems
Problem
Possible causes/consequences and
X Solutions·
DISTRONIC PLUS
or PRE-SAFE ®
Brake: The red
distance warning
lamp comes on
while driving and
an acoustic
warning sounds. You are gaining too rapidly on the vehicle ahead of you or
DISTRONIC
PLUS
or PRE-SAFE®
Brake has recognized a stationary
obstacle on your probable line of travel.
X Apply the brakes immediately.
X Carefully observe the traffic situation. You may need to brake
or maneuver to avoid hitting an obstacle. Vehicle
Problem
Possible causes/consequences and
X SolutionsThe yellow fuel tank
reserve
warning

lamp in
the fuel gauge comes
on while driving. The fuel level has gone below the reserve mark.
X
Refuel at the next gas station. Engine
Problem
Possible causes/consequences and
X Solutions;
The yellow engine
malfunction indicator
lamp comes on when
the engine is running.
There may be a malfunction in
R
the fuel management system
R the ignition system
R the emission control system
R systems which affect emissions
Such malfunctions may result in excessive emissions values and
may switch

the engine to limp-home (emergency operation) mode.
X Have the vehicle checked as soon as possible at an authorized
Mercedes-Benz Center.
i Some states may by law require you to visit a workshop as
soon as

the engine malfunction indicator lamp comes on. Check
local requirements. ;
The yellow engine
malfunction indicator
lamp comes on when
the engine is running.
A loss of pressure has been detected in the fuel system. The fuel
cap may not be closed properly or the fuel system may be leaky.
X
Check the fuel cap ( Y page 366).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system checked by an
authorized Mercedes-Benz Center. What to do if …
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Tires
Problem
Possible causes/consequences and
X Solutionsh
USA only:
Combination
low tire
pressure
telltale/TPMS
malfunction
telltale for the
Advanced TPMS
illuminates
continuously.
Canada only:
Low tire
pressure telltale
for the
Advanced TPMS
illuminates
continuously. The Advanced TPMS detects a loss of pressure in at least one tire.
X
Carefully bring the vehicle to a halt, avoiding abrupt steering and
braking maneuvers. Observe the traffic situation around you.
X Read and observe messages in the multifunction display
(Y page 414).
If the tire inflation pressure in the respective tire(s) has (have) been
corrected, the combination low tire pressure/TPMS malfunction
telltale goes out after a few minutes of driving. h
USA only:
Combination
low tire

pressure
telltale/TPMS
malfunction
telltale for the
Advanced TPMS
flashes 60
seconds and
then stays
illuminated. There is a malfunction in the Advanced TPMS.
X
Read and observe messages in the multifunction display
(Y page 414).
X Have the Advanced TPMS checked at an authorized Mercedes-
Benz Center.
After the malfunction has been remedied, the combination low tire
pressure/TPMS malfunction

telltale goes out after a few minutes
of driving. G
Warning!
Each tire, including the spare (if provided),
should be checked at least once a month
when cold and inflated to the inflation
pressure recommended by the vehicle
manufacturer on the Tire and Loading
Information placard on the driver’s door B-
pillar or

the tire inflation pressure label on the
inside of the fuel filler flap. If your vehicle has
tires of a different size than the size indicated
on the Tire and Loading Information placard
or the tire inflation pressure label, you should determine the proper tire inflation pressure
for those tires.
As an added safety feature, your vehicle has
been equipped

with a tire pressure monitoring
system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires are significantly underinflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly underinflated tire causes the tire
to overheat and can lead to tire failure. 458
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Underinflation also reduces fuel efficiency
and
tire
tread life, and may affect the vehicle’s
handling and stopping ability. Please note that
the TPMS is not a substitute for proper tire
maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure telltale. When the
system detects a malfunction, the telltale will
flash for approximately 1 minute and then remain continuously illuminated. This
sequence will continue upon subsequent
vehicle start-ups as long as the malfunction
exists. When the malfunction indicator is
illuminated, the system may not be able to
detect
or
signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to
continue to function properly. Lamp in center console
Problem
Possible causes/consequences and
X Solutions42
The front passenger
front air bag off
indicator lamp
illuminates and
remains illuminated
with the weight of a
typical adult or
someone larger than a
small individual on the
front passenger seat.
The system is malfunctioning.
X
Have the system checked as soon as possible at an authorized
Mercedes-Benz Center.
X Read and observe messages in the multifunction display and
follow corrective steps (Y page 414). G
Warning!
If the 42 indicator lamp
illuminates and remains illuminated with the
weight of a typical adult or someone larger than a small individual on the front passenger
seat,
do

not have any passenger use the front
passenger seat until the system has been
repaired. What to do if …
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Problem
Possible causes/consequences and
X Solutions42
The front passenger
front air bag off
indicator lamp does not
illuminate and/or does
not remain illuminated
with the weight of a
typical 12-month-old
child in a standard child
restraint or less on the
front passenger seat.
The system is malfunctioning.
X
Make sure there is nothing between seat cushion and child seat
and check installation of the child seat.
X Make sure no objects applying supplemental weight onto the
seat are present.
X If the front passenger front air bag off indicator lamp remains
out, have the system checked as soon as possible at an
authorized Mercedes-Benz Center. Do not transport a child on
the front passenger seat until the system has been repaired.
X Read and observe messages in the multifunction display and
follow corrective steps (Y page 414). G
Warning!
If the 42 indicator lamp does not
illuminate or remains out with the weight of a
typical 12-month-old child in a standard child
restraint or less on the front passenger seat,
do not transport a child on the front
passenger seat until the system has been
repaired. Unlocking/locking manually
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or with KEYLESS-GO, unlock the
driver’s door and the trunk using the
mechanical key.
The anti-theft alarm system will trigger when
you
R unlock the driver’s door or the trunk with
the mechanical key
and
R open the driver’s door or the trunk
To cancel the alarm, insert the SmartKey into
the starter switch. Removing the mechanical key
SmartKey
SmartKey with KEYLESS-GO
X
Move locking tab : in the direction of
arrow.
X Slide mechanical key ; out of the housing.460
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Unlocking the driver’s door
X
Insert mechanical key ; into the driver’s
door lock.
X Turn mechanical key ; counterclockwise
to position 1.
X Pull the door handle past the resistance
point until the locking knob moves up.
The driver’s door is unlocked.
X Pull the door handle once more to open the
driver’s door.
X Turn mechanical key ; back and remove
it from the driver’s door lock.
Unlocking the trunk A minimum height clearance of 5.9 ft (1.8 m)
is required to open the trunk lid.
X
Insert mechanical key ; into the trunk lid
lock.
X Turn mechanical key ; counterclockwise
to position 1. !
When you open the trunk, the trunk lid
swings open upwards. Always make sure
there is sufficient overhead clearance.
X Turn mechanical key ; back and remove
it from the trunk lid lock. Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or with KEYLESS-GO, lock it as
follows:
X Open the passenger door.
X Close the driver’s door and the trunk.
i If you cannot close the trunk with the
remote trunk opening/closing switch,
lower the trunk lid manually and close it
with hands placed flat on the trunk lid until
it is engaged in its lock.
X Press down the locking knob of the driver’s
door.
X Press down the locking knob of the
passenger door.
! To prevent inadvertent lockout, make
sure to have the SmartKey with you before
proceeding with the next step. The next
step will lock the vehicle.
X Exit the vehicle.
X Lock the trunk with the mechanical key
(Y page 261).
X Close the passenger door.
i This procedure does not arm the anti-
theft alarm system, nor does it lock the fuel
filler flap. Replacing SmartKey batteries
If the batteries in the SmartKey are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an authorized
Mercedes-Benz Center. Replacing SmartKey batteries
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G
Warning!
Batteries contain poisonous and corrosive
substances. Therefore, keep the batteries out
of reach of children.
If a battery is swallowed, seek medical help
immediately. G
Warning!
SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Check with
your local government’s disposal guidelines.
California residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Batteries contain materials that can harm the
environment if disposed of improperly.
Recycling of batteries is the preferred method
of disposal. Many states (USA only) or
provinces (Canada only) require sellers of
batteries to accept old batteries for recycling.
When inserting the batteries, make sure they
are clean and free of lint.
When replacing batteries, always replace
both batteries.
i The required replacement batteries are
available at any authorized Mercedes-Benz
Center.
Replacement batteries: Lithium, type
CR 2025 or equivalent.
X Remove the mechanical key from the
SmartKey (Y page 460). SmartKey
X
Press mechanical key ; into the SmartKey
opening until battery compartment
cover : opens. Do not keep the cover
shut. X
Remove the battery compartment cover.
X Pat the SmartKey against the palm of your
hand until battery = falls out.
X Insert the new battery with the positive
terminal (+) facing up. Use a lint-free cloth.
X Insert the tabs of the battery compartment
cover into the housing and press the cover
closed.
X Slide mechanical key : back into the
SmartKey.
X Check the operation of the SmartKey. 462
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