2014 MERCEDES-BENZ CLS-Class ECU

Safety
Seat belts Problem Possible causes/consequences and
000B Solutions
0006
After startingt
he
engine, the red seat
belt warning lamp lights
up for 6seconds. The seat belt warning lamp reminds the driver and fron
tpassenger
to fasten their seat belts.
X Faste nyour seat belt (Y page 56). 0006
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a
warning tones ounds
for up to six seconds. The driver's seat belt is not fastened.
X
Fasten your seat belt (Y page 56).
The warning tonec eases. 0006
The red seat belt
warning lamp lights up
after the engine starts,
as soon as the driver's
or the front-passenger
door is closed.
The driver or front passenger has not fastened their seat belt.
X
Fasten your seat belt (Y page 56).
The warning lamp goes out. There are object
sonthe front-passenger seat.
X Remove the object sfrom the front-passenger seat and stow
them in asecure place.
The warning lamp goes out. 0006
The red seat belt
warning lamp flashes
and an intermittent
audible warning
sounds.
The driver or front passenger has not fastened their seat belt. You
are driving faster than 15 mph (25 km/h) or have briefly driven
faster than 15 mph (25 km/h).
X
Fasten your seat belt (Y page 56).
The warning lamp goes out and the intermittentw arning tone
ceases. Ther
eare object sonthefront-passenger seat .You are driving
faster than 15 mph (25 km/h) or have briefly driven faster than
15 mph (25 km/h).
X Remove the object sfrom the front-passenger seat and stow
them in asecure place.
The warning lamp goes out and the intermittentw arning tone
ceases. Indicator and warning lamps in th
einstrumen tcluster
265On-boar dcomputer and displays Z

Safety systems
Problem Possible causes/consequences and
000B Solutions
0004
(USA only)
0001 (Canada only)
The red brake system
warning lamp comes on
while the engine is
running. Awarning tone
also sounds. G
WARNING
The brake boosting effect is malfunctioning and the braking
characteristics may be affected.
There is arisk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 167).
X Consult aqualified specialist workshop.
X Observe the additional display messages in the multifunction
display. 0004
(USA only)
0001 (Canada only)
The red brake system
warning lamp comes on
while the engine is
running. Awarning tone
also sounds. There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is arisk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 167).
X Do not add brake fluid. Adding more will not remedy the
malfunction.
X Consult aqualified specialist workshop.
X Observe the additional display messages in the multifunction
display. 266
Indicator and warning lampsint
he instrument clusterOn-board computer and displays

Engine
Problem Possible causes/consequences and
000B Solutions
000A
The yellow Check
Engin
ewarning lamp
light supw hile the
engin eisrunning. Ther
emay be amalfunction, for example:
R in th eenginem anagement
R in th efuel injection system
R in th eexhaust system
R in th eignition system
R in th efuel system
The emission limit values may be exceeded and th eenginem ay
be runnin ginemergenc ymode.
X Hav ethe vehicle checked as soon as possible at aqualified
specialist workshop.
i In som estates, you must immediately visit aqualified
specialist worksho passoon as th eyellow Chec kEngine warning
lamp lights up .This is due to the legal requirements in effect in
these states. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving. 0007
The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 0007
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the
000A
Check Enginew arning
lamp may light up. The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visitaqualified specialist
workshop. 0017
The red coolant
warning lamp lights up
while the engine is
running and the coolant
temperature gauge is
at the start of the scale.
The temperature sensor for the coolant temperature gauge is
defective.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away (Y page 167).
X Consult aqualified specialist workshop. Indicator and warning lampsint
he instrument cluster
273On-board computer and displays Z

Problem Possible causes/consequences and
000B Solutions
0017
The red coolant
warning lamp comes on
while the engine is
running.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator
may be blocked or the electric engine radiator fan may be
malfunctioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 308).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the coolant temperature is
under 248 ‡(120 †). Otherwise ,the engine coul dbedamaged.
X Drive to the nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainou sterrain, and stop-and-go traffic. 0017
The red coolant
warning lamp comes on
while the engine is
running.
Awarning tone
also sounds. The coolant temperature has exceeded 248
‡(120 †). The
airflow to the engine radiator may be blocked or the coolant level
may be too low.
G WARNING
The engine is not being coole dsufficiently and may be damaged.
Do not drive whe nyour engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catchf ire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is arisk of injury.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).274
Indicator and warning lampsint
he instrument clusterOn-board computer and displays

Tires
Problem Possible causes/consequence
sand 000B Solutions
0008
The yellow tire pressure
monitor warnin
glamp
(pressure loss/
malfunction) is lit. The tire pressure monitor ha
sdetecte dalossofp ressure in at
leas tone of the tires.
G WARNING
With tire pressures which ar etoo low, there is arisk of the
following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steerin gand braking, may
be greatly impaired.
There is arisk of an accident.
X Stop the vehicle without making any sudden steerin gorbraking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 167).
X Observe the additional display messages in the multifunction
display.
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 321).
X Check the tire pressure (Y page 342).
X If necessary, correc tthe tire pressure. 0008
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit.
The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire
pressure.
There is arisk of an accident.
X Observe the additional display messages in the multifunction
display.
X Visit aqualified specialist workshop. 276
Indicator and warning lampsint
he instrument clusterOn-board computer and displays

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please not ethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related system sand functions.
i Read the information on qualified
specialist workshops: (Y page 26).Stowage areas
Loading guidelines
G
WARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants .There is arisk of injury,
particularly in the even tofsudden braking or
as udde nchange in direction.
Always store objectssot hat they cannot be
flung around. Secure objects, luggageor
loads against slipping or tipping before the
journey. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is
ar isk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open. The handling characteristics of
aladen
vehicle are dependent on the distribution of
the load within the vehicle. For this reason,
you should observe the following notes when
transporting aload:
R Never exceed the maximum permissible
gross vehicle weight or the gross axle
weight rating of the vehicle (including
occupants). The values are specified on the
vehicle identification plate on the B-pillar of
the driver's door.
R The trunk is the preferred place to carry
objects.
R Position heavy loads as far forwards as
possible and as low down in the trunk as
possible.
R The load must not protrude above the
upper edge of the seat backrests.
R Always place the load against the rear or
front seat backrests. Make sure that the
seat backrests are securely locked into
place.
R Always place the load behind unoccupied
seats if possible.
R Use the cargo tie down rings and the parcel
nets to transport loads and luggage.
R Use cargo tie-down rings and fastening
materials appropriate for the weight and
size of the load.
R Secure the load with sufficiently stronga nd
wear-resistant tie-downs. pad sharp edges
for protection. Stowage space
Important safety notes G
WARNING
If you do not correctly store objectsint he
vehicle interior, they can slip or be flung
around, thus strikingv ehicle occupants.
There is arisk of injury, especially when
braking or abruptly changing directions. 278
Stowage areasStowage and features

R
Alway sstor eo bjects so tha tthey cannot be
flung around in these or in similar
situations.
R Always make sure that objectsdon ot
protrude from stowage compartments,
parcel nets or stowage nets.
R Close lockable stowage compartments
while driving.
R Stow and secure objectst hat are heavy,
hard, pointy, sharp-edged, fragile or too
large in the trunk.
Observe the loading guidelines (Y page 278).
Glove box X
To open: pull handle 001Aand open glove box
flap 0010.
X To close: fold glove box flap 0010upwards
until it engages.
i The glove box can be ventilated
(Y page 142). The glove box can only be locked and
unlocked using the mechanical key. X
To lock: insert the mechanical key into the
lock and turn it 90° clockwise to position
0002.
X To unlock: insert the mechanical key into
the lock and turn it 90° counter-clockwise
to position 0001.
Eyeglassesc ompartment There is
acompartmen ttostow eyeglasses
in the headliner on the driver's side.
X To open: pull down eyeglasses
compartment 001Aby the handle.
Stowage compartments in the front
center console All models except AMG vehicles
X
To open: slide the cover forwards by
handle 001Ain the direction of the arrow until
it engages.
X To close: briefly press the front of
handle 001A. Stowage areas
279Stowage and features Z

AMG vehicles
X
Briefly press trim 001A.
i The stowag etray can be removed.
Stowage compartmen tunde rthe
armrest X
To open: pull handle 001Aup.
The armres tfolds out.
i Dependin gonthe vehicle's equipment, a
12 Vsocket ,aUSB socket ,and an AUX IN
connection or Media Interface are installed
in the stowage compartment.AM edia
Interface is auniversal interface for mobile
audio equipment, e.g. for an iPod ®
or MP3
player (see the separate COMAND
Operatin gInstructions).
Stowage compartment under the front
seats G
WARNING
If you exceed the maximum load for the
stowage compartment ,the cover may not be
able to restrain the items. Item smay be thrown out of the stowage compartment and
hit vehicle occupants. There is
arisk of injury,
particularly in the event of sudden brakin gor
as udden change in direction.
Never excee dthe maximum permissible load
for the stowage compartment .Stowa nd
secure heavy objects in the trunk.
The maximum permissible load of the
stowage compartment is 3.3 lbs (1.5 kg). X
To open: pull handle 001Aup and fold
cover 0010forwards.
i On vehicles with afire extinguisher, the
fire extinguisher is located in the stowage
compartment under the driver's seat.
Stowage compartment sinthe rear
center console X
To open: slide covers 001Aand 0010in the
direction of the arrow.
i There is a12Vpower socket in the front
stowage compartment. 280
Stowage areasStowage and features