2011 MERCEDES-BENZ CLS-CLASS ignition

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 system sensor cover : by
hand.
To clean Distronic 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.
Cleaning the windows and the wiper
blades !
The windshield wipers must be in a
vertical position before folding them away
from the windshield. They could otherwise
damage the hood.
Never open the hood when the wiper arms
are folded forward.
X Make sure the hood is fully closed.
X Switch on the ignition.
X Turn combination switch to wiper setting
° (Y page 92).
X With wiper arms in vertical position, switch
off the ignition. G
Warning!
For safety reasons, switch off wipers and
remove SmartKey from starter switch before
cleaning the windshield and/or the wiper
blades. Vehicles with KEYLESS-GO: Make
sure the vehicle’s on-board electronics have
status 0. Otherwise, the wiper motor could
suddenly turn on and cause injury.
! Do not pull on the wiper blade inserts.
They could tear.
X Fold the wiper arms forward until they snap
into place.
X Clean the windshield and the wiper blade
inserts with a clean cloth and mild
detergent solution.
X Use a soft, clean cloth and a mild window
cleaning solution on all outside and inside
glass surfaces. Vehicle care
219Operation
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Display messages
Possible causes/consequences and
X SolutionsFront
Passenger
Airbag
Enabled
See
Operator’s
Manual USA only:
The front passenger front air bag is activated while driving
even though a child, small individual, or object below the
system’s weight threshold is on the front passenger seat, or
the front passenger seat is empty. Objects on the seat or
forces acting on the seat may make the system sense
supplemental weight.
X
Stop the vehicle in a safe location as soon as possible.
X Engage the parking brake.
X Switch off the ignition.
X Open the front passenger door.
X Remove child and child restraint from front passenger seat
and properly secure the child in rear seat employing the
child restraint if necessary.
X Remove any other items from on and around the front
passenger
seat and make sure the storage bag on the back
of the front passenger seat is empty.
X Make sure no objects which apply forces to the seat are
present

(e.g. objects such as books, briefcases etc. lodged
behind or around the seat, head restraints pushing against
roof etc.). The system may recognize such forces as
supplemental weight and sense that an occupant on the
front passenger seat is of a greater weight than actually
present.
X Keep the seat unoccupied, close the front passenger door
and switch on the ignition.
Monitor the 04 indicator lamp in the center
console (Y page 44) and the multifunction display in the
instrument cluster

(Y page 28) for the following:
With the seat unoccupied and the ignition switched on,
R the 04 indicator lamp in the center console
should illuminate and remain illuminated, indicating that
the OCS (Y page 41) has deactivated the front passenger
front air bag.
R the message Front Passenger Airbag Enabled See
Operator’s Manual or the message Front Passenger
Airbag Disabled See Operator’s Manual should not
appear in the multifunction display at any time the seat is
unoccupied. Wait at least 60 seconds for the system to
complete the necessary check cycles and to make sure
neither message appears in the multifunction display. 230
Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X SolutionsFront
Passenger
Airbag
Disabled
See
Operator’s
Manual USA only:
The
front passenger front air bag is deactivated while driving
even though an adult or someone larger than a small
individual is occupying the front passenger seat. Forces
acting on the seat may make the system sense a decrease in
weight.
X Stop the vehicle in a safe location as soon as possible.
X Engage the parking brake.
X Switch off the ignition.
X Have the front passenger vacate the seat and exit the
vehicle.
X Adjust the seat height to a higher position (Y page 78).
X Make sure no objects which apply forces to the seat are
present

(e.g. objects such as books, briefcases etc. lodged
underneath, behind or around the seat). Such forces may
cause the system to sense that an occupant of a lesser
weight than actually present is on the front passenger seat.
X Keep the seat unoccupied, close the front passenger door
and switch on the ignition.
Monitor the 04 indicator lamp in the center
console (Y page 44) and the multifunction display in the
instrument cluster

(Y page 28) for the following:
With the seat unoccupied and the ignition switched on,
R the 04 indicator lamp in the center console
should illuminate and remain illuminated, indicating that
the OCS (Y page 41) has deactivated the front passenger
front air bag.
R the message Front Passenger Airbag Enabled See
Operator’s Manual or the message Front Passenger
Airbag Disabled See Operator’s Manual should not
appear in the multifunction display at any time the seat is
unoccupied. Wait at least 60 seconds for the system to
complete the necessary check cycles and to make sure
neither message appears in the multifunction display.
If above conditions are met, you can occupy the front
passenger seat again. Depending on the front passenger
classification sensed by the OCS, the 04
indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working
properly. Have the system checked at an authorized
Mercedes-Benz Center as soon as possible. 232
Vehicle status messages in the multifunction display
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Engine
Display messages
Possible causes/consequences and
X Solutions=
(USA only)
;
(Canada
only) Engine
Service There may be a malfunction in
R
the fuel management system
R the ignition system
R the exhaust system
R the fuel system
X Have the engine checkedas soon as possible at an
authorized Mercedes-Benz Center. ; Display
Malfunctio
n
Service
Required Certain electronic systems are unable to relay information to
the control system. The coolant temperature display or the
tachometer may have failed.
X
Have the electronic systems checked at an authorized
Mercedes-Benz Center. + Top Up
Coolant
See
Operator’s
Man. The coolant level is too low.
X
Add coolant (Y page 180).
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. Vehicle status messages in the multifunction display
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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 low-
beam headlamp indicator lamp, 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. What to do if …
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Engine
Problem
Possible causes/consequences and
X Solutions= (USA only)
; (Canada only)
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. = (USA only)
; (Canada only)
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 176).
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. ?
The red coolant
temperature
warning lamp
comes on when
the engine is
running. There is insufficient coolant in the reservoir.
If this warning lamp comes on frequently, there is a leak in the
cooling system.
If the coolant level is correct, the electric radiator fan may be
broken.
X
Immediately add coolant to prevent engine from overheating
(Y page 180).
X Have the cooling system checked.
X If the coolant temperature is below 248‡ (120†), you can
continue driving to the nearest authorized Mercedes-Benz
Center.
X Avoid high engine loads (e.g. driving uphill) and stop-and-go
driving. What to do if …
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Notes on bulb replacement
!
Do not replace LEDs or bulbs not
described in this section. You could
otherwise damage the LEDs, the bulbs or
parts of the vehicle. Only have the LEDs and
bulbs replaced at an authorized Mercedes-
Benz Center. G
Observe Safety notes, see page 266.
R Only use 12-volt bulbs of the same type and
with the specified watt rating.
R Switch the lights off before changing a bulb
to prevent short circuits.
R Always use a clean lint-free cloth when
handling bulbs.
R Your hands should be dry and free of oil and
grease.
R If the newly installed bulb does not come
on, contact an authorized Mercedes-Benz
Center.
i Mercedes-Benz recommends using
Longlife (LL) bulbs. 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.
Before you start to replace a bulb for a front
lamp, do the following:
X Switch off the ignition.
X Turn the exterior lamp switch to position
$.
X Open the hood (Y page 178). :
Housing cover for low-beam halogen or Bi-
Xenon headlamp
; Housing cover for high-beam headlamp/
high-beam flasher bulb and for parking
and standing lamp bulb =
Bulb socket for turn signal lamp bulb
? Bulb socket for high-beam bulb
A Bulb socket for parking and standing lamp
bulb
B Bulb socket for low-beam bulb
Low-beam bulb (halogen headlamps
only) X
Turn housing cover : counterclockwise
and remove it.
X Turn bulb socket B with the bulb
counterclockwise and remove it.
X Pull the bulb out of bulb socket B.
X Gently press the new bulb into bulb socket
B. 268
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X
Place bulb socket B back into the housing
and turn it clockwise until it engages.
X Align housing cover : and turn it
clockwise until it engages.
High-beam and high-beam flasher bulb
(halogen headlamps only)/high-beam
flasher bulb (Bi-Xenon headlamps only) X
Turn housing cover ; counterclockwise
and remove it.
X Turn bulb socket ? with the bulb
counterclockwise and remove it.
X Pull the bulb out of bulb socket ?.
X Gently press the new bulb into bulb
socket ?.
X Place bulb socket ? back into the housing
and turn it clockwise until it engages.
X Align housing cover ; and turn it
clockwise until it engages.
Front turn signal lamp bulb X
Turn bulb socket = with the bulb
counterclockwise and remove it.
X Gently press onto the bulb and turn it
counterclockwise out of bulb socket =.
X Gently press the new bulb into bulb socket
= and turn it clockwise until it engages.
X Place bulb socket = back into the housing
and turn it clockwise until it engages.
Parking and standing lamp bulb Halogen headlamps
X
Turn housing cover ; counterclockwise
and remove it.
X Pull out bulb socket A with the bulb.
X Pull the bulb out of bulb socket A.
X Gently press the new bulb into bulb socket
A.
X Press bulb socket A back into the lamp.
X Align housing cover ; and turn it
clockwise. Bi-Xenon headlamps
In vehicles with Bi-Xenon headlamps, the
bulbs of the parking and standing lamps are
LEDs.
!
Do not replace the LEDs yourself. You
could otherwise damage the LEDs or parts
of the vehicle. Only have the LEDs replaced
at an authorized Mercedes-Benz Center. 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.
G
Observe Safety notes, see page 266.
License plate lamps X
Switch off the ignition.
X Turn the exterior lamp switch to position
$.
X Open the trunk.
X Loosen screws : of lamp cover to be
removed.
X Remove lamp cover ;.
X Replace the bulb.
X Reinstall lamp cover ;.
X Retighten screws :. Replacing bulbs
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