low oil pressure MERCEDES-BENZ CLS 2011 Owners Manual

Memory function .............................. 85
Vanity mirror ..................................
162
MOExtended system ......................... 277
MOExtended tires ..................... 277, 292
MON (Motor Octane Number) ..........299
Motor Octane Number see MON

Multicontour seat ................................ 80
Multifunction display ........................ 111
Symbol messages .......................... 238
Text messages ............................... 229
Vehicle status messages ............... 228
Multifunction display messages
ABS ....................................... 229, 239
Active headlamps .......................... 247
Advanced TPMS ..................... 236, 250
Air bags ......................................... 230
Air filter .......................................... 246
AIRMATIC DC (Dual Control) .......... 240
Alternator ...................................... 245
Automatic transmission ................. 235
Battery ........................................... 245
Brake fluid ..................................... 239
Brake pads ..................................... 238
Check engine ................................. 243
Coolant .......................................... 243
Corner-illuminating front fog
lamps ............................................. 249
Cruise control ................................ 233
Distronic ........................................ 233
Doors ............................................. 241
EBP ................................................ 239
Engine oil ....................................... 246
Engine service ............................... 243
ESP ®
...................................... 229, 239
Fog lamps .............................. 247, 249
Front passenger front air bag ........230
Gas cap .......................................... 246
Gear selector lever ........................235
High-beam lamps ........................... 248
Hood .............................................. 241
License plate lamps ....................... 248
Light sensor ................................... 248
Low-beam lamps ............................ 249
Parking brake ................................ 239
Parking lamps ................................ 248
PRE-SAFE ®
.................................... 229Reserve fuel ...................................
246
Reverse lamp ................................. 247
Side marker lamps .........................248
SmartKey ....................................... 241
SmartKey with KEYLESS-GO ..........241
SRS ................................................ 240
Tail lamps ...................................... 249
Tele Aid .......................................... 240
Tire inflation pressure ............235, 250
Tire pressure monitor .................... 236
Tires ...................................... 235, 250
TPMS ..................................... 236, 250
Trunk ............................................. 241
Turn signals ................................... 250
Washer fluid ................................... 242
Multifunction steering wheel
Adjustment ...................................... 82
Buttons .......................................... 110
Cleaning ......................................... 220
Easy-entry/exit feature ...........83, 124
Gearshift control ............................ 106
Heating ............................................ 83
Memory function .............................. 85
Overview .......................................... 29 N
Navigation menu ............................... 117
Navigation system see Separate operating instructions


NECK-PRO active front head
restraints ............................................. 50
Resetting ....................................... 264
Net, parcel ......................................... 157
Night security illumination .............. 122
Normal occupant weight .................. 207
Number, vehicle identification
(VIN) ................................................... 289 O
Occupant Classification System see

OCS (Occupant Classification
System)
Occupant distribution ....................... 207
Occupant safety Air bags ........................................... 37
Children and air bags ....................... 3712
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X
If you see another display, press button
V or U repeatedly until the standard
display appears.
X Press button & or * to select the
functions in the Standard display menu.
The following functions are available:
R Restarting the tire pressure loss warning
system (Y page 187) (Canada only)
R Restarting the TPMS (Y page 189) (USA
only)
R Checking tire inflation pressure with the
Advanced TPMS (Y page 190) (Canada
only)
R Calling up digital speedometer or outside
temperature ( Y page 113)
R Calling up maintenance service indicator
display ( Y page 215)
Calling up digital speedometer or
outside temperature Depending on the chosen setting for the
standard display (Y page 120) you can call
up the other display here. G
Warning!
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
X Press button & or * repeatedly until
the digital speedometer or the outside
temperature appears in the multifunction
display. :
Basic display with digital speedometer
; Status line display with outside
temperature
= Trip odometer
You can select whether the digital
speedometer or the outside temperature
appears in the status line display
(Y page 120). AMG menu
This function is only available in AMG
vehicles.
X Press button V or U repeatedly until
the AMG menu appears in the
multifunction display. The main screen of the
AMG menu shows you
the gear currently engaged : as well as the
engine oil temperature ;.
The engine oil temperature flashes if the
engine oil temperature has not yet reached
80†. During this time, avoid driving at full
engine speed.
If the engine reaches the overspeed range in
the manual shift program, the menu will be
shown in red. In addition, you will see UP next
to gear indicator : as a reminder to upshift. Control system
113Controls in detail
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Mercedes-Benz Center to have the fuel
system drained completely.
! To prevent damage to the catalytic
converters, only use premium unleaded
gasoline in this vehicle.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel may
reach the catalytic converter, causing it to
overheat and potentially start a fire.
i Only use premium unleaded gasoline with
a minimum Posted Octane Rating of 91
(average of 96 RON/86 MON).
Information on gasoline quality can
normally be found on the fuel pump. Please
contact gas station personnel in case
labels on the pump cannot be found.
For more information on gasoline, see
“Premium unleaded gasoline”
(Y page 299), see “Fuel requirements”
(Y page 299), or contact an authorized
Mercedes-Benz Center, or visit
www.mbusa.com (USA only).
Locking/unlocking the vehicle with the
SmartKey or KEYLESS-GO automatically
locks/unlocks the fuel filler flap.
i In case the central locking system does
not release the fuel filler flap, see “Fuel filler
flap” (Y page 263).
The fuel filler flap is located on the right-hand
side of the vehicle towards the rear. X
Turn off the engine. i
Leaving the engine running and the fuel
filler cap open can cause the yellow fuel
tank reserve warning lamp to flash and the
malfunction indicator lamp = (USA
only) or ; (Canada only) to illuminate.
For more information, see also “Practical
hints” (Y page 257).
X Remove the SmartKey from the starter
switch.
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 then can
be closed again.
X Opening: Press fuel filler flap : at the
point indicated by the arrow.
X Turn fuel filler cap ; counterclockwise.
X Take off fuel filler cap ;.
X Place fuel filler cap ; in direction of arrow
into holder =.
X Fully insert filler nozzle unit and refuel.
X Only fill your tank until the filler nozzle unit
cuts out – do not top off or overfill .
X Closing: Turn fuel filler cap ; clockwise
until it audibly engages.
i Close the fuel filler flap before locking the
vehicle. Otherwise the flap locking pin will
prevent closing the fuel filler flap.
X Close fuel filler flap :. Check regularly and before a long trip
For information on quantities and
requirements of operating agents, see “Fuels,
coolants, lubricants, etc.” (Y page 296).
Check the following:
R Engine oil level ( Y page 179)
R Tire inflation pressure ( Y page 185)
R Coolant level ( Y page 180)
R Vehicle lighting ( Y page 266) At the gas station
177Operation
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An automotive glass cleaner is
recommended.
! Fold the windshield wiper arms back onto
the windshield before turning the SmartKey
in the starter switch or pressing the
KEYLESS-GO start/stop button.
Hold on to the wiper when folding the wiper
arm back. If released, the force of the
impact from the tensioning spring could
crack the windshield.
! To clean the window interior, do not use
a dry cloth, abrasives, solvents or cleaners
containing solvents. Do not touch the
inside of the windows with hard objects
such as an ice scraper or ring. Doing so may
damage the windows.
Light alloy wheels If possible, clean wheels once a week.
X
Use Mercedes-Benz approved Wheel Care,
a soft bristle brush and a strong spray of
water for cleaning the light alloy wheels.
! Only use acid-free cleaning materials.
Acid may cause corrosion or damage the
clear coat.
! The vehicle should not be parked for an
extended period of time immediately after
it

has been cleaned. This applies especially
after the wheel rims have been cleaned
with wheel rim cleaner. Wheel rim cleaners
can lead to increased corrosion of the
brake disks and brake pads. Non-approved
wheel cleaners may also damage the wheel
paint if the vehicle is not driven after
cleaning.
Therefore, the vehicle’s brake system
should always be warmed-up before it is
parked after cleaning. Drive your vehicle for
several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved
Tire Care and Mercedes-Benz approved
Wheel Care products, take care not to
spray them on the brake disks. Plastic and rubber parts X
Use a gentle dishwashing detergent or mild
detergent

for delicate fabrics as a washing
solution.
X Wipe with a cloth moistened in a lukewarm
solution.
The

surface may temporarily change color.
If this is the case, wait for it to dry. G
Warning!
Do not use cleaners or cockpit care sprays
containing
solvents to clean the cockpit or the
steering wheel. Cleaners containing solvents
will make the surface porous and vehicle
occupants could suffer serious injuries from
plastic parts coming loose in the event of air
bag deployment.
! Do not use oil, wax or scouring agents.
Otherwise you may scratch or damage the
surface.
Hard plastic trim items
X Use Mercedes-Benz approved Interior Care
on

a soft, lint-free cloth and apply with light
pressure.
COMAND display !
You
must switch off the COMAND display
and allow it to cool prior to cleaning.
! Do not use any liquids or cleaning agents.
These can damage or even destroy the
COMAND display screen.
X Use a standard microfiber cloth and apply
with light pressure.
Steering wheel and gear selector lever X
Wipe with a damp cloth and dry thoroughly
or clean with Mercedes-Benz approved
Leather Care. 220
Vehicle care
Operation
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Display messages
Possible causes/consequences and
X Solutions# Low
Voltage
Start
Engine The battery has insufficient voltage.
X
Start the engine. 4 Check oil
level at
next
refueling. The engine oil has dropped to a critical level.
X
Check the engine oil level ( Y page 179) and add engine oil
as required ( Y page 180).
X If you must add engine oil frequently, have the engine
checked for possible leaks. If the message
Check
oil level at next
refueling. appears while the engine is
running and at operating temperature, the
engine oil level has dropped to approximately
the minimum level.
The message will be stored in the vehicle
status message memory after you have
cleared it from the multifunction display.
Visually check for oil leaks. If there are no
obvious oil leaks, drive to the nearest service
station to refill your engine oil to the required
level. For information on approved engine oils
contact
an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only).
! Engine oil level warnings should not be
ignored. Extended driving with the symbol
displayed could result in serious engine
damage that is not covered by the
Mercedes-Benz Limited Warranty. Display messages
Possible causes/consequences and
X SolutionsC The fuel level is low.
X
Refuel at the next gas station. 7 Reserve
Fuel The fuel level has dropped below the reserve mark.
X
Refuel at the next gas station. 7 Gas Cap
Is Open 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 leaking.
X
Check the fuel cap ( Y page 177).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system checked at
an authorized Mercedes-Benz Center. ¸ Replace
Air Filter The air filter is clogged.
X
Have the air filter checked at an authorized Mercedes-Benz
Center. 246
Vehicle status messages in the multifunction display
Practical hints
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Under extremely strenuous operating
conditions, this moisture content can lead to
the formation of bubbles in the system, thus
reducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly.
Refer to your vehicle’s Maintenance
Booklet for replacement interval.
Only brake fluid approved by Mercedes-Benz
is recommended. Any authorized Mercedes-
Benz Center will provide you with additional
information. Premium unleaded gasoline
G
Warning!
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flames or smoking
materials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and any skin or clothing
contact. Extinguish all smoking materials.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging your
health.
! To maintain the engine’s durability and
performance, premium unleaded gasoline
must be used.
If premium unleaded gasoline is not
available and low octane gasoline is used,
follow these precautions:
R Have the fuel tank only partially filled
with

unleaded regular gasoline and fill up
with premium unleaded gasoline as soon
as possible.
R Avoid full throttle driving and abrupt
acceleration.
R Do not exceed an engine speed of
3 000 rpm if the vehicle is loaded with a light load such as two persons and no
luggage.
R Do not exceed 2
/ 3 of maximum
accelerator pedal position if the vehicle
is fully loaded or operating in
mountainous terrain. Fuel requirements
Only use premium unleaded gasoline. The
octane

number (posted at the pump) must be
91 min. It is an average of both the Research
Octane Number (RON) and the Motor Octane
Number (MON): (RON+MON)/2. This is also
known as the ANTI-KNOCK INDEX.
Reformulated gasolines (RFG) and/or
unleaded gasoline containing oxygenates
such as ethanol, TAME, ETBE, IPA, IBA, and
TBA can be used provided the ratio of any one
of these oxygenates to gasoline does not
exceed 10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is not
allowed. Gasohol, which contains 10%
ethanol and 90% unleaded gasoline, can be
used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc. Gasoline additives
A major concern among engine
manufacturers is carbon build-up caused by
gasoline. Mercedes-Benz recommends only
the use of quality gasoline containing
additives that prevent the build-up of carbon
deposits. Fuels, coolants, lubricants, etc.
299
Technical data
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