2010 MERCEDES-BENZ CL CLASS headlamp

Coolant level
The engine coolant is a mixture of water and
anticorrosion/antifreeze.
When checking the coolant level, the vehicle
must be parked on level ground, and the
coolant temperature must be below 158‡
(70†). G
Warning!
In order to avoid any potentially serious burns:
R Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system, or
if the coolant temperature gauge indicates
that the coolant is overheated.
R Do not remove the cap on the coolant
expansion tank if the coolant temperature
is above 158‡ (70†). Allow the engine to
cool down before removing the cap. The
coolant expansion tank contains hot fluid
and is under pressure.
R Using a rag, slowly open the cap
approximately 1
/ 2 turn counterclockwise
to relieve excess pressure. If opened
immediately, scalding hot fluid and steam
will be blown out under pressure.
R Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. Example illustration: CL 550 4MATIC X
Using a rag, slowly open cap :
approximately 1
/ 2 turn counterclockwise
to relieve excess pressure.
X Continue turning cap : counterclockwise
and remove it.
The coolant level is correct if the level
R for cold coolant: reaches marking bar
= in coolant expansion tank ;
R for warm coolant: is approximately 0.6 in
(1.5 cm) higher
X Add coolant as required.
X Screw cap : back on and tighten it.
For more information on coolant, see the
“Technical data” section ( Y page 491) and
(Y page 494). Washer system and headlamp
cleaning system
G
Warning!
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it may
ignite and burn. You could be seriously
burned.
! Always use washer solvent/antifreeze
where temperatures may fall below
freezing point. Failure to do so could result
in damage to the washer system/fluid
reservoir.
! Only use washer fluid which is suitable for
plastic lenses. Improper washer fluid can
damage the plastic lenses of the
headlamps.
! Do not use distilled or deionized water in
the washer fluid reservoir. Otherwise, the
washer fluid level sensor could be
damaged.
Fluid for the washer system and the headlamp
cleaning system is supplied from the washer
fluid reservoir. 372
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During all seasons, use MB Windshield
Washer Concentrate “MB SummerFit”. Mix it
with water or premixed washer solvent/
antifreeze depending on the ambient
temperature (
Y page 496). X
Opening washer fluid reservoir: Pull tab
of cap : upwards.
X Refill the washer fluid reservoir.
X Closing washer fluid reservoir: Press
cap : onto filler hole until it engages.
For more information, see “Washer system
and headlamp cleaning system”
(Y page 492). Brake fluid level
! If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum
mark or below, have the brake system
checked for brake pad thickness and leaks
immediately. Contact an authorized
Mercedes-Benz Center immediately. Do
not add brake fluid as this will not solve the
problem. For more information, see
“Practical hints”.
When checking the brake fluid level, the
vehicle must be parked on level ground. The brake fluid level is correct when it is
between lower mark (MIN)
; and upper
mark (MAX) : of the brake fluid reservoir. Tires and wheels
Safety notes
Contact 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. G
Warning!
Replace rims or tires with the same
designation, manufacturer and type as shown
on the original part. For further information
contact an authorized Mercedes-Benz Center.
If incorrectly sized rims and tires are
mounted, the wheel brakes or suspension
components can be damaged. Also, the
operating clearance of the wheels and the
tires may no longer be correct. G
Warning!
Worn, old tires can cause accidents. If the tire
tread is worn to minimum tread depth, 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. Tires and wheels
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X
When taking the vehicle through an
automatic conveyor-type car wash:
Make sure the automatic transmission
remains in neutral position N. Observe
instructions, see “Remaining in neutral
position N” (Y page 292).
When leaving the automatic car wash, make
sure the mirrors are folded out.
After running the vehicle through an
automatic car wash, wipe any wax off of the
windshield and the wiper blade inserts. This
will prevent smears and reduce wiping noise
which can be caused by residual wax on the
windshield.
Ornamental moldings X
For regular cleaning and care of ornamental
moldings, use a damp cloth.
! Do not use chrome cleaner on ornamental
moldings. Although ornamental moldings
may have chrome appearance, they could
be made of anodized aluminum that will be
damaged when cleaned with chrome
cleaner. Instead, use a damp cloth to clean
those ornamental moldings.
For very dirty ornamental moldings of
which you are sure are chrome-plated, use
a chrome cleaner. If in doubt whether an
ornamental molding is chrome-plated,
contact an authorized Mercedes-Benz
Center.
Headlamps, brake lamps, tail lamps,
side markers, turn signal lenses X
Use a mild vehicle wash detergent, such as
Mercedes-Benz approved Car Shampoo,
with plenty of water.
! Only use window cleaning solutions that
are suitable for plastic lamp lenses.
Window cleaning solutions which are not
suitable may damage the plastic lamp
lenses of the headlamps. Therefore, do not
use abrasives, solvents or cleaners that
contain solvents. Cleaning the driving systems sensors
X
Switch off the ignition.
X Clean DISTRONIC PLUS/PRE-SAFE ®
Brake
system sensor cover : by hand.
To clean DISTRONIC PLUS/PRE-SAFE ®
Brake
system sensor cover : and the bumper area
near sensors ; observe the following:
R Use a mild vehicle wash detergent, such as
Mercedes-Benz approved Car Shampoo,
with plenty of water.
R Use a soft, non-scratching cloth.
! If you use a power washer to clean the
sensor covers, observe the following:
R Follow the instructions provided by the
power washer manufacturer.
R Maintain a distance between the sensor
covers and the nozzle of the power
washer. 406
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Lamps
Display messages
Possible causes/consequences and
X Solutionsb Active
Headlamps
Inoperativ
e The active headlamps are malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Check
Left
Reverse
Lamp
or
Check
Right
Reverse
Lamp The left or right backup lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Check
Center
Brake Lamp The high-mounted brake lamp is malfunctioning. This
message will only appear if all LEDs have stopped working.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Check
Left Fog
Lamp
or
Check
Right Fog
Lamp The left or right front fog lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Check
Front
Left
Sidemarker
Lamp
or
Check
Front
Right
Sidemarker
Lamp The front left side or right side marker lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. 446
Vehicle status messages in the multifunction displayPractical hints
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Display messages
Possible causes/consequences and
X Solutionsb Auto Lamp
Function
Inoperativ
e The light sensor is malfunctioning. The headlamps come on
automatically.
X
Contact an authorized Mercedes-Benz Center as soon as
possible.
To switch off the headlamps (U.S. vehicles only):
X Switch off the daytime running lamp mode in the instrument
cluster control system ( Y page 215).
X Switch off the headlamps using the exterior lamp switch
(Y page 275). b Check
Left Low
Beam
or
Check
Right Low
Beam The left or right low-beam lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Check
Rear Left
Fog Lamp The rear fog lamp is malfunctioning. A substitute bulb is being
used.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Please
Switch
Off Lights You have removed the SmartKey from the starter switch,
opened the driver’s door and left the headlamps on or
removed the SmartKey with KEYLESS-GO from the vehicle
and left the headlamps on.
X
Turn the exterior lamp switch to $ or c
(Y page 275).
or
X With the rear fog lamp switched on: Push in the exterior
lamp switch to its stop. b Check
Left Tail
and Brake
Lamp
or
Check
Right
Tail and
Brake Lamp The left or right tail lamp/brake lamp is malfunctioning. This
message will only appear if a critical number of LEDs have
stopped working. A substitute bulb is being used.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. 448
Vehicle status messages in the multifunction display
Practical hints
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Tires
Display messages
Possible causes/consequences and
X Solutionsh Tire
Press.
Warning
Caution
Tire
Malfunctio
n At least one tire is deflating.
X
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.
X If necessary, change the wheel (Y page 465). h Check
Tire
Pressure The tire inflation pressure in at least one tire is significantly
below the reference value.
X
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.
X Check and adjust tire inflation pressure as required.
X If necessary, change the wheel (Y page 465). G
Warning!
Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may
lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up
and possibly a fire. G
Warning!
Follow recommended tire inflation pressures.
Do not
underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect
handling and fuel economy, and are more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear
unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are
more likely to become punctured or damaged by road debris, potholes etc. What to do if …
Lamps in instrument cluster
Notes If any of the following lamps in the instrument
cluster fails to come on during the bulb self-
check when switching on the ignition, have
the respective bulb checked and replaced if
necessary.
When you switch on the ignition, all lamps in
the instrument cluster come on. The high-
beam headlamp indicator lamp and turn
signal indicator lamps will only come on if
activated. If a lamp in the instrument cluster
fails
to

come on when the ignition is switched
on, have it checked and replaced if necessary. 450
What to do if …
Practical hints
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SmartKey with KEYLESS-GO
X
Insert mechanical key : into opening.
X Press mechanical key : in direction of
arrow.
Battery compartment ; is unlatched.
X Pull battery compartment ; out of the
SmartKey housing. X
Pull out batteries =.
X Insert new batteries = under contact
springs ? with the positive terminal (+)
side facing up.
X Return battery compartment ; into
SmartKey housing until it locks into place.
X Slide mechanical key : back into the
SmartKey.
X Check the operation of the SmartKey as
well as the KEYLESS-GO function. Replacing bulbs
Safety notes
Safe vehicle operation depends on proper
exterior lighting and signaling to a large
degree.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals. Contact an
authorized Mercedes-Benz Center for
headlamp adjustment. G
Warning!
The bulbs in the tail lamps cannot be replaced
individually. The tail lamp bulbs are under
pressure and could explode during an attempt
to replace them.
If the tail lamps are malfunctioning, have them
replaced at an authorized Mercedes-Benz
Center.
i If the headlamps or front fog lamps are
fogged up on the inside as a result of high
humidity, driving the vehicle a distance with
the lights on should clear up the fogging. Replacing bulbs for front lamps
G
Warning!
Do not remove the cover for the Bi-Xenon
headlamp. Because of high voltage in Xenon
lamps, it is dangerous to replace the bulb or
repair the lamp and its components. It is
recommended to have such work done by a
qualified technician.
i Replacing the bulbs for the front lamps is
a technically complex process. Have such
work done by an authorized Mercedes-
Benz Center. Replacing bulbs
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X
Connect positive terminal : of charged
battery A with
positive terminal ; with a
jumper cable. Clamp the cable to positive
terminal : of charged battery A first.
X Start engine of the vehicle with charged
battery A and run at idle speed.
X Connect negative terminal = of charged
battery A with negative terminal ? with
a jumper cable. Clamp the cable to
negative terminal = of charged battery
A first.
X Start engine of the vehicle with the
discharged battery and run at idle speed.
You can now turn on the electrical
consumers. Do not switch on the
headlamps under any circumstances.
X Remove the jumper cables from negative
terminals = and ? first.
X Remove the jumper cables from positive
terminals : and ;.
You can now switch on the headlamps.
X Have the battery checked at the nearest
authorized Mercedes-Benz Center. Towing the vehicle
Safety notes
G
Warning!
The vehicle is braked when the HOLD function
or DISTRONIC PLUS is activated. Therefore,
deactivate the HOLD function or DISTRONIC
PLUS if the vehicle is to be towed.
Mercedes-Benz recommends

that the vehicle
be transported with all wheels off the ground
using flatbed or appropriate wheel lift/dolly
equipment. This method is preferable to other
types of towing.
! To prevent damage during transport, do
not tie down vehicle by its chassis or
suspension parts.
If circumstances do not permit the
recommended towing methods, the vehicle
may be towed with all wheels on the ground or front axle raised (except vehicles with
4MATIC) only

so far as necessary to have the
vehicle moved to a safe location where the
recommended towing methods can be
employed.
! Before towing the vehicle observe the
following instructions:
R Do not tow-start the vehicle. You could
otherwise seriously damage the
automatic transmission which is not
covered by the Mercedes-Benz Limited
Warranty.
R Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
R Towing of the vehicle should only be
done using the properly installed towing
eye bolt. Never attach a tow cable, tow
rope or tow rod to the vehicle chassis,
frame or suspension parts. G
Warning!
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.
! Avoid pulling the vehicle abruptly or
diagonally, since it could result in damage
to the chassis alignment.
! Do not use the towing eye bolt for
recovery, as

this could damage the vehicle.
If in doubt, recover the vehicle with a crane.
i If the battery is disconnected or
discharged
R the SmartKey will not turn in the starter
switch
R the automatic transmission will remain in
park position P Towing the vehicle
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