2011 MERCEDES-BENZ CL-Class check engine light

Ambient lightAdjusting (COMAND) .....................232
AMG menu (on-board computer) ..... 335
Anti-lock Braking System see ABS
Anti-Theft Alarm system
see ATA
Anti-theft system
ATA (Anti-Theft Alarm system) .........68
Ashtray ............................................... 389
Assistance menu (on-board
computer) .......................................... 339
ATA (Anti-Theft Alarm system) Activating/deactivating ...................68
Function ........................................... 68
Switching off the alarm ....................68
ATTENTION ASSIST ........................... 315
Activating/deactivating (on-
board computer) ............................ 340
Display message ............................ 363
Audio AUX jack .................................. 221
Audio CD/DVD or MP3 mode Switching to ................................... 205
Audio DVD
Stop function ................................. 207
Audio format
Setting (audio DVD mode) .............210
Audio menu (on-board computer) .... 334
AUTO lights see Light sensor
Automatic car wash .......................... 410
Automatic engine start Using the ECO start/stop
function ......................................... 271
Automatic engine stop
Using the ECO start/stop
function ......................................... 271
Automatic transmission
DIRECT SELECT lever .....................274
Display message ............................ 371
Driving tips .................................... 277
Emergency running mode ..............281
Kickdown ....................................... 277
Malfunction .................................... 281
Program selector button ................277
Pulling away ................................... 269
Starting .......................................... 269Autostore ........................................... 197
B
Back button ....................................... 109
Backrest Folding forward/back ......................96
Backrest (display message) ............. 372
Bag hook ............................................ 387
Bang & Olufsen sound system ......... 127
BAS (Brake Assist System) ................. 62
BAS PLUS (Brake Assist System
Plus*) .................................................... 62
Battery Charging ........................................ 428
Checking (SmartKey) .......................76
Display message ............................ 361
Important safety guidelines
(SmartKey) ....................................... 75
Jump-starting ................................. 429
Replacing (SmartKey) ......................76
Safety notes .................................. 426
Voltage (on-board computer) .........335
Belt
see Seat belts
Bird's-eye view .................................. 168
Blind see Roller sunblind
Bluetooth ®
Activating/deactivating .................133
Authorizing a device ......................134
Connecting devices .......................133
Devices .......................................... 133
External authorization ............134, 181
General information .......................132
Interface ........................................ 179
Revoking authorization ..................135
Settings ......................................... 132
Telephony .............................. 178, 179
Bluetooth ®
interface
Telephony ...................................... 178
Bluetooth ®
interface telephony
Conditions ..................................... 179
Bluetooth ®
telephone list ................. 180
Brake fluid Notes ............................................. 472
Brake fluid level ................................ 409
Brake lamp (display message) ......... 356
Index5

Changing gears .................................. 277
Changing the programming SmartKey ......................................... 75
Channel presets ................................ 196
Character entry ................................. 119
Characters Entering ................................. 120, 122
Children
In the vehicle ................................... 56
Restraint systems ............................ 56
Child seat
LATCH-type (ISOFIX ) child seat
anchors ............................................ 58
Special seat belt retractor ...............58
Top Tether ....................................... 59
Cigarette lighter ................................ 390
City Entering ......................................... 140
Classification system for
occupants (OCS) Faults ............................................... 50
Operation ......................................... 46
System self-test ............................... 49
Climate control
Activating/deactivating .................258
Activating/deactivating air-
recirculation mode .........................261
Automatic climate control .............257
COMAND ....................................... 234
Controlling automatically ...............258
Controlling centrally (COMAND) ....236
Cooling with air dehumidification ..258
Cooling with air dehumidification
(COMAND) ..................................... 236
Defrosting the windshield ..............260
Demisting the windows .................. 260
Important safety information .........256
Indicator lamp ................................ 258
Main menu ..................................... 235
Maximum cooling .......................... 260
Problems with "cooling with air
dehumidification" ........................... 258
Problems with the rear window
heating .......................................... 261
Refrigerant ..................................... 472
Setting the air distribution .............259
Setting the airflow .........................260
Setting the airflow (COMAND) .......237Setting the air vents ......................262
Setting the footwell temperature
(COMAND) ..................................... 237
Setting the temperature ................259
Switching the rear window
heating on/off ............................... 261
Switching the residual heat
function on/off .............................. 261
Cockpit ................................................. 31
COMAND Basic functions .............................. 123
Components .................................. 108
Function buttons ........................... 109
Switching on/off ........................... 123
COMAND controller ........................... 108
COMAND display ............................... 111
Cleaning instructions .....................114
Folding in and swiveling .................114
Setting ........................................... 128
COMAND menu
Automatic climate control .............234
COMAND Menu
Vehicle ........................................... 229
COMAND operating system .............. 108
Combination switch .......................... 246
Conference connection ..................... 185
Consumption statistics (on-board
computer) .......................................... 332
Convenience closing feature .............. 86
Convenience opening feature ............ 86
Convenience telephone Importing contacts ........................187
Coolant (engine)
Checking the level .........................407
Display message ............................ 359
Notes ............................................. 473
Temperature gauge ........................ 328
Cooling
see Climate control
Copy protection (CD/DVD) ............... 212
Cornering light (display message) ... 356
Crosshair position Saving ............................................ 167
Cruise control
Cruise control lever .......................292
Display message ............................ 369
Function/notes ............................. 291Index7

EngineIrregular running ............................ 273
Starting problems ..........................273
Starting the engine with the key ....269
Starting with KEYLESS-GO .............269
Switching off .................................. 284
Warning lamp Check Engine ..........380
Engine electronics
Malfunction .................................... 273
Engine emergency stop .................... 435
Engine number .................................. 467
Engine oil Adding ........................................... 406
Checking the oil level ..................... 405
Display message ............................ 361
Filling capacity ............................... 469
Lubricant additives ........................472
Notes about oil grades ................... 471
Temperature (on-board computer) . 335
Viscosity ........................................ 472
Entering characters
In the address and the phone
book .............................................. 122
Using the number pad ...................120
Entry
Deleting ......................................... 121
Saving ............................................ 123
ESP ®
(Electronic Stability
Program) Activating/deactivating ...................64
Activating/deactivating (on-
board computer) ............................ 339
Display message ............................ 344
ETS/4ETS ........................................ 64
Important safety information ...........63
Warning lamp ................................. 378
ETS/4ETS (Electronic Traction
System) ................................................ 64
Example: entering an address .......... 139
Example display Audio CD mode .............................. 206
Example of operation ........................ 118
Exhaust check ................................... 288
Exhaust tail pipe (cleaning
instructions) ...................................... 414
Exterior lighting see Exterior lighting Exterior mirror parking position
Adjusting (COMAND) .....................231
Exterior mirrors
Adjusting ....................................... 100
Dipping (automatic) .......................101
Folding in/out (automatically) .......101
Folding in/out (electrically) ...........101
Out of position ............................... 101
Storing settings (memory
function) ........................................ 102
Storing the parking position ..........101
Exterior view ........................................ 30
External authorization ...................... 134
Eyeglasses compartment ................. 385
F
Favorites (COMAND) ......................... 109
First-aid kit ......................................... 420
First list entry Accepting ...................................... 121
Flat tire
Changing a wheel/mounting the
spare wheel ................................... 421
MOExtended run-flat system .........425
Preparing the vehicle .....................421
Raising the vehicle .........................422
Floormat ............................................. 400
Freeway information ......................... 172
Frequency input Manual ........................................... 196
Front fog lamp (display message) ... 357
Front multicontour seat
(COMAND) .......................................... 238
Front-passenger seat Adjusting from the driver's seat .......94
Fuel
Additives ........................................ 471
Notes ............................................. 470
Premium-grade unleaded gasoline . 470
Refueling ........................................ 281
Specifications ................................ 470
Tank content/reserve fuel .............469
Troubleshooting ............................. 284
Fuel consumption
Current (on-board computer) .........332
Notes ............................................. 287
Fuel filler cap (display message) ..... 362
10Index

Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
Occupant safety
Overview of occupant safety
In this section you will learn the most
important facts about the restraint system
components of the vehicle.
The restraint systems are:
R Seat belts
R Child restraint systems
R LATCH-type (ISOFIX) child seat anchors
Additional protection is provided by:
R SRS (Supplemental Restraint System)
R NECK-PRO head restraints
R PRE-SAFE ®
R Air bag system components with:
- PASSENGER air bag OFF indicator lamp
- USA only: front passenger seat with
Occupant Classification System (OCS)
- Canada only: front passenger seat with
BabySmart™ air bag deactivation system
The different air bag systems work
independently of each other. The protective
functions of the systems work in conjunction
with each other. Not all air bags are deployed
in an accident.
GWarning
Modifications to or work improperly
conducted on restraint system components
or their wiring, as well as tampering with
interconnected electronic systems, can lead
to the restraint systems no longer functioning
as intended.
Air bags or Emergency Tensioning Devices
(ETDs), for example, could deploy
inadvertently or fail to deploy in accidents
although the deceleration threshold for air
bag deployment is exceeded. Therefore,
never modify the restraint systems. Do not
tamper with electronic components or their
software.
i See "Children in the vehicle"
( Y page 56) for more information on
infants and children traveling with you in
the vehicle and restraints for infants and
children.
SRS (Supplemental Restraint System)
Introduction
SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
effect of the forces to which occupants are
subjected during an accident.
SRS consists of:
R the 6 SRS warning lamp
R air bags
R air bag control unit (with crash sensors)
R belt tensioners
R belt force limiters
SRS warning lamps
SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
The SRS components are in operational
readiness when the 6 SRS warning lamp
goes out while the engine is running.
40Occupant safetySafety

If BAS PLUS demands particularly high
braking force, PRE-SAFE ®
is activated
simultaneously.XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again when:
R you release the brake pedal
R no obstacle is detected in front of your
vehicle
R there is no longer any danger of a rear-end
collision
BAS PLUS is then deactivated.
At speeds up to approximately
40 mph (70 km/h), BAS PLUS can also detect
stationary obstacles, for example, stopped or
parked vehicles.
For BAS PLUS to assist you when driving, the
radar sensor system must be switched on and
operational. You can check this by activating
DISTRONIC PLUS ( Y page 293) or via the
"radar sensor" function in the on-board
computer( Y page 342).
GWarning!
BAS PLUS will only respond with brake
assistance if it has clearly detected an object.
Detection can be impeded by
R dirty or covered sensors
R snowfall or heavy rain
R disturbance from other radar sources
R strong radar reflection such as in parking
garages
BAS PLUS uses radar signals that are not
reflected well by narrow objects and
absorptive materials. For this reason BAS
PLUS will not react to persons, animals, and
approaching traffic or cross-traffic.
BAS PLUS may not detect narrow vehicles
driving in front of you, such as motorcycles
and vehicles driving offset from your vehicle
center.
Following a collision or accident-related
damage to the front end of the vehicle, have
the configuration and operation of the radar
sensors checked at an authorized Mercedes-
Benz Center.
If BAS PLUS is not available due to a
malfunction in the radar sensor system, the
brake system remains available with full
brake boosting effect and BAS.
Adaptive brake lights
i Adaptive brake lamps are only available in
the USA and only on the S 600.
If you brake sharply from a speed of more
than 30 mph (50 km/h) or if braking is
assisted by BAS or BAS PLUS, the brake
lamps flash rapidly. In this way, traffic
traveling behind you is warned in an even
more noticeable manner.
If you brake from a speed of more than
40 mph (70 km/h) to a standstill, the hazard
warning lamps are switched on automatically
when the vehicle is stationary. If the brakes
are applied again, the brake lamps light up
continuously. The hazard warning lamps
switch off automatically if you drive faster
than 6 mph (10 km/h) again. You can also
switch off the hazard warning lamps using the
hazard warning lamp button ( Y page 248).
ESP ®
(Electronic Stability Program)
Important safety notes
GWarning
Observe "Important safety notes"
( Y page 61).
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. If necessary, the engine output is also
modified to keep the vehicle on the desired
course within physical limits. ESP ®
assists
the driver when pulling away on wet or
slippery roads. ESP ®
can also stabilize the
vehicle during braking.
Driving safety systems63SafetyZ

ProblemPossible causes/consequences and M SolutionsThe engine cannot be
started using the
SmartKey.The on-board voltage is too low.XRemove the SmartKey and reinsert it into the ignition lock.XStart the engine within 30 seconds of inserting the SmartKey
into the ignition lock.XRepeat if necessary.
If the engine does not start after several attempts:
XCheck the starter battery and charge it if necessary
( Y page 426).
or
XJump-start the vehicle ( Y page 429).
or
XConsult a qualified specialist workshop.The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.A door is open. Therefore, the SmartKey cannot be detected as
easily.XClose the door and try to start the vehicle again.There is interference from a powerful source of radio waves.XStart your vehicle with the SmartKey in the ignition lock.Doors
Important safety notes
GWarning!
When leaving the vehicle, always remove the
SmartKey from the starter switch. Always
take the SmartKey with you and lock the
vehicle. Do not leave children unattended in
the vehicle, even if they are secured in a child
restraint system, or with access to an
unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. The children
could
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
starter switch or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function
If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned by these
parts.GWarning
Do not carry heavy or hard objects in the
passenger compartment unless they are
firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of:
R strong braking maneuvers
R sudden changes of direction
R an accident
78DoorsOpening and closing

The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior light is activated for a short while
when the key is removed from the ignition
lock. You can activate this delayed switch-off
using COMAND ( Y page 232).
Manual interior lighting controlXTo switch the front interior lighting on/
off: press the c button.XTo switch the rear interior lighting on/
off: press the u button.XTo switch the reading lamps on/off:
press the p button.
Changing bulbs
Important safety notes
Xenon bulbs
If your vehicle is equipped with Xenon bulbs,
you can recognize this by the following: the
cone of light from the Xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
GWarning
Xenon bulbs carry a high voltage. You could
get an electric shock and be seriously or even
fatally injured if you touch the electric
contacts on Xenon bulbs. Therefore, never
remove the cover from Xenon bulbs.
Do not change Xenon bulbs yourself, but have
them replaced at a qualified specialist
workshop which has the necessary specialist
knowledge and tools to carry out the work
required.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
Other bulbsGWarning!
Bulbs and lamps can be very hot. You should
therefore allow them to cool down before you
change them. Otherwise, you could be burned
if you touch them.
Keep bulbs out of the reach of children.
Otherwise, they could damage the bulbs, for
example, and injure themselves.
Never use a bulb which has been dropped.
Such a bulb may break or even explode and
injure you.
Halogen bulbs are pressurized and can
explode when you change them, particularly
if they are very hot. You should therefore wear
eye protection and gloves when you are
changing them.
There are bulbs other than the Xenon bulbs
that you cannot replace. Replace only the
bulbs listed (Y page 251). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
If you require assistance changing bulbs,
consult a qualified specialist workshop.
Do not touch the glass tube of new bulbs with
your bare hands. Even minor contamination
can burn into the glass surface and reduce
the service life of the bulbs. Always use a lint-
free cloth or only touch the base of the bulb
when installing.
Only use bulbs of the correct type.
250Changing bulbsLights and windshield wipers

Replacing the windshield wiper blades
Moving the wiper arms to a vertical
position
Vehicles without KEYLESS-GO
XTurn the key to position 1 or 2 in the ignition
lock.
XSet the windshield wipers to
position ° on the combination switch.
XWhen the wiper arms have reached a
vertical position, turn the key to position
0 and remove it from the ignition lock.
Vehicles with KEYLESS-GO
XSwitch off the engine.XTake your foot off the brake pedal.XSet the windshield wipers to
position ° on the combination switch.
XPress the Start/Stop button repeatedly
until the windshield wipers start.
XWhen the wiper arms have reached a
vertical position, press the Start/Stop
button.
Removing the wiper blades
XFold the wiper arm away from the
windshield until it engages.
XSet the wiper blade at right angles to the
wiper arm.
XRemove the wiper blade from the retainer
on the wiper arm in the direction of the
arrow.
Installing the wiper bladeXSlide the new wiper blade into the retainer
on the wiper arm in the opposite direction
to the arrow.
Make sure that the wiper blade slides fully
into the retainer on the wiper arm.
XTurn the wiper blade parallel to the wiper
arm.
XFold the wiper arm back onto the
windshield.
Problems with the windshield wipers
The windshield wipers are obstructed
Leaves or snow, for example, may be
obstructing the windshield wiper movement.
The wiper motor has been deactivated.
XFor safety reasons, you should remove the
key from the ignition lock.
or
XSwitch off the engine using the Start/Stop
button and open the driver's door.
XRemove the cause of the obstruction.XSwitch the windshield wipers back on.
The windshield wipers are inoperative
The windshield wiper drive is malfunctioning.
XSelect another wiper speed on the
combination switch.
XHave the windshield wipers checked at a
qualified specialist workshop.
Windshield wipers253Lights and windshield wipersZ