2010 MERCEDES-BENZ CL CLASS stop start

Engine
Display messages
Possible causes/consequences and
X Solutions+ Check
Coolant
Level See
Oper.
Manual The coolant level is too low.
X
Add coolant (Y page 372).
X If you have to add coolant frequently, have the cooling
system checked at an authorized Mercedes-Benz Center. G
Warning!
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! Do not ignore the low engine coolant level warning. Extended driving with the message
and symbol
displayed may cause serious engine damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant in the cooling system. The engine will
overheat causing major engine damage. Display messages
Possible causes/consequences and
X Solutions? Coolant
Low Stop
Vehicle
Turn
Engine Off The coolant is too hot.
X
Stop the vehicle immediately as soon as it is safe to do so.
X Turn off the engine immediately.
X Engage the parking brake.
X Only start the engine again after the message disappears.
You could otherwise damage the engine.
X Observe the coolant temperature gauge in the instrument
cluster.
X If the temperature rises again: Contact an authorized
Mercedes-Benz Center immediately.
During severe operation conditions and stop-and-go city
traffic, the coolant temperature may rise close to 248‡
(120†). G
Warning!
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam from

an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down. 442
Vehicle status messages in the multifunction display
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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
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Safety systems
Problem
Possible causes/consequences and
X Solutions7
The red seat belt
telltale comes
on for a
maximum of
6 seconds after
starting the
engine. The seat belt telltale reminds you and your passengers to fasten
your seat belts before driving off.
X
Fasten your seat belts.
Regardless of whether the seat belts are fastened or not, the seat
belt telltale always comes on and remains lit for 6 seconds after
starting the engine. 7
The red seat belt
telltale comes
on. In addition
you hear a
warning chime
for a maximum
of 6 seconds
after starting
the
engine. You have forgotten to fasten your seat belt.
X
Fasten your seat belt.
The warning chime stops sounding. 7
The red seat belt
telltale comes
on while the
vehicle is
standing still
and the

engine is
running or while
driving. You and/or your front passenger have forgotten to fasten your
seat belts.
X
Fasten your seat belts.
The seat belt telltale goes out. There are items placed on the front passenger seat and therefore
the system senses the front passenger seat as being occupied.
X
Remove the items from the front passenger seat and put them
in a safe place.
The seat belt telltale goes out. 7
The red seat belt
telltale flashes
while driving. In
addition, an
intermittent
warning chime
sounds with
increasing
intensity. The vehicle’s speed once exceeded 15 mph (25 km/h) and you
and/or your front passenger have forgotten to fasten your seat
belts.
X
Fasten your seat belts.
The seat belt telltale goes out and the warning chime stops
sounding. There are items placed on the front passenger seat and therefore
the system senses the front passenger seat as being occupied.
X
Remove the items from the front passenger seat and put them
in a safe place.
The seat belt telltale goes out and the warning chime stops
sounding. 454
What to do if …
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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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Replacing bulbs for rear lamps
Tail lamp unit The tail lamps are equipped with HiP bulbs
and LEDs. Have them replaced at an
authorized Mercedes-Benz Center.
Replacing wiper blades
Safety notes
G
Warning!
For safety reasons, switch off the wipers and
remove the SmartKey from the starter switch
(vehicles with KEYLESS-GO: Make sure the
vehicle’s on-board electronics have status 0)
before replacing a wiper blade. Otherwise, the
wiper motor could suddenly turn on and cause
injury. G
Warning!
Wiper blades are components that are subject
to wear and tear. Replace the wiper blades
twice a year, preferably in the spring and fall.
Otherwise the windshield will not be wiped
properly. As a result, you may not be able to
observe surrounding traffic conditions and
could cause an accident.
! To avoid damage to the hood, the wiper
arms should only be folded forward when
in the vertical position.
! Never open the hood when a wiper arm is
folded forward.
Hold on to the wiper when folding a wiper
arm back. If released, the force of the
impact from the tensioning spring could
crack the windshield.
Do not allow a wiper arm to contact the
windshield glass without a wiper blade
inserted.
Mercedes-Benz recommends that you have
this work carried out at an authorized
Mercedes-Benz Center. Placing wiper arms in vertical position
Wiper arms in vertical position
X
Make sure the hood is fully closed.
Vehicles with SmartKey X
Turn the SmartKey in the starter switch to
position 1.
X Turn the combination switch to wiper
setting °.
X With wiper arms in vertical position, turn
the SmartKey in the starter switch to
position 0.
X Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO X
Make sure the vehicle’s on-board
electronics have status 1.
X Turn the combination switch to wiper
setting °.
X Press the KEYLESS-GO start/stop button
repeatedly until the windshield wipers
start.
X Press the KEYLESS-GO start/stop button
when the wiper arms are in a vertical
position. Removing wiper blades
! Do not pull on the wiper blade inserts.
They could tear. 464
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X
Fold the wiper arm forward until it snaps
into place. X
Turn the wiper blade in direction of
arrow :.
X Slide the wiper blade sideways out of the
retainer in the direction of arrow ;. Installing wiper blades
X Slide the wiper blade onto the wiper arm
until it locks in place.
X Rotate the wiper blade into a position
parallel to the wiper arm.
X Fold the wiper arm backward to rest on the
windshield.
Make sure you hold on to the wiper when
folding the wiper arm back.
! Make sure the wiper blades are installed
properly. Improperly installed wiper blades
may cause windshield damage. Flat tire
Safety notes
G
Warning!
The dimensions of the spare wheel are
different from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a spare wheel
mounted. Adapt your driving style
accordingly. The spare wheel is for temporary use only.
When driving with a spare wheel mounted,
ensure proper tire inflation pressure and do
not exceed a vehicle speed of 50 mph
(80 km/h).
Contact the nearest authorized Mercedes-
Benz Center as soon as possible to have the
spare wheel replaced with a regular road
wheel.
Never operate the vehicle with more than one
spare wheel mounted.
Do not switch off the ESC when a spare wheel
is mounted.
Preparing the vehicle
X Whenever possible, park the vehicle in a
safe distance from moving traffic on a hard,
flat surface.
X Turn on the hazard warning flasher.
X Turn the steering wheel so that the front
wheels are in a straight-ahead position.
X Engage the electronic parking brake.
X Shift the automatic transmission into park
position P.
X Turn off the engine.
X Remove the SmartKey from the starter
switch.
or
X Vehicles with KEYLESS-GO: Open the
driver’s door (this puts the starter switch in
position 0, same as with the SmartKey
removed from the starter switch). The
driver’s door can then be closed again.
Open doors only when conditions are safe
to do so.
X Vehicles with KEYLESS-GO: Remove the
KEYLESS-GO start/stop button from the
starter switch.
X Have any passenger exit the vehicle at a
safe distance from the roadway. Open
doors only when conditions are safe to do
so. Flat tire
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For more information see “Battery”
(Y page 469) or “Jump starting”
(Y page 471).
Installing towing eye bolt
Depending on whether you are towing a
vehicle or you are being towed, the towing eye
bolt can be screwed into threaded holes
which are located behind covers on each
bumper.
The towing eye bolt is supplied with the
vehicle tool kit, located underneath the trunk
floor ( Y page 412).
X Take the vehicle tool kit out of the trunk.
Removing cover in front bumper X
Press mark on cover : as indicated by the
arrow.
X Lift cover : off to reveal the threaded hole
for the towing eye bolt.
Removing cover in rear bumper G
Warning!
In order to avoid possible serious burns or
injury, use extreme caution when removing
the rear cover, because the rear exhaust pipe
is extremely hot. X
Press mark on cover : as indicated by the
arrow.
X Lift cover : off to reveal the threaded hole
for the towing eye bolt.
Fixing towing eye bolt Example illustration front bumper
X
Take the towing eye bolt and, if so
equipped, the wheel wrench from the
vehicle tool kit (Y page 412).
X Screw towing eye bolt ; clockwise into
threaded hole to its stop.
X Insert wheel wrench into towing eye and
tighten towing eye bolt ; by turning it
clockwise.
or
X If your vehicle is not equipped with a wheel
wrench, use a suitable object to turn the
towing eye bolt. 474
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!
Vehicles without 4MATIC:
Because the ESC 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 one axle raised.
Active braking action through the ESC may
otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
! Keep in mind that it is important for the
SmartKey to be left in starter switch with
the ignition switched off. As soon as the
SmartKey is removed from the starter
switch the automatic transmission will shift
to park position P. Fuses
Introduction
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the components and
systems secured by that fuse will stop
operating. G
Warning!
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system in
question and do not attempt to repair or
bridge a blown fuse. Using other than
approved fuses or using repaired or bridged
fuses may cause an overload leading to a fire,
and/or cause damage to electrical
components and/or systems. Have the cause
determined and remedied by an authorized
Mercedes-Benz Center.
! Switch off the vehicle’s internal electrical
functions when you are working on the
fuses.
A blown fuse must be replaced by an
appropriate spare fuse (recognizable by its
color or the fuse rating given on the fuse) of the amperage recommended in the fuse
chart. Any Mercedes-Benz Center will be glad
to advise you on this subject.
i
In case of a blown fuse contact Roadside
Assistance or an authorized Mercedes-
Benz Center.
If a newly inserted fuse blows again, have the
cause determined and rectified by an
authorized Mercedes-Benz Center.
The fuse chart is located in the trunk with the
vehicle tool kit (Y page 412). The fuse chart
explains the fuse allocation and fuse
amperages. Before replacing fuses
X Engage the electronic parking brake.
X Make sure the automatic transmission is in
park position P.
The transmission position indicator in the
multifunction display should be on P.
X Switch off all electrical consumers.
X Turn off the engine. Fuse box in passenger compartment
! Do not use sharp objects such as a
screwdriver to open the fuse box cover in
the dashboard. You could damage the fuse
box cover or the dashboard. Fuse box on driver’s side476
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