2016 MERCEDES-BENZ CLS clock

Unlocking/locking the driver's door
using the mechanical key
i If you want to centrally lock the vehicle using
the mechanical key, begin by pressing the
locking button for the interior locking mech-
anism while the driver's door is open. Then
lock the driver's door using the mechanical
key.
X
To unlock: turn the mechanical key counter-
clockwise as far as it will go to position G .X
To lock: turn the mechanical key clockwise as
far as it will go to position G .
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys-
tem will be triggered. Switch off the alarm
( Y
page 75).
Trunk
Important safety notes
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 a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
! The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid. The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
( Y
page 336).
You should preferably place luggage or loads in
the trunk. Observe the loading guidelines
( Y
page 251).
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
Vehicles without the trunk lid remote clos-
ing feature: the trunk lid can be: R
opened and closed manually from outside R
opened automatically from outside R
opened automatically from inside R
locked separately R
opened with the emergency release button R
unlocked with the mechanical key
Vehicles with the trunk lid remote closing
feature: the trunk lid can be: R
opened and closed manually from outside R
opened/closed automatically from outside R
opened/closed automatically from inside R
locked separately R
opened with the emergency release button R
unlocked with the mechanical key
Trunk lid reversing feature The trunk lid is equipped with an automatic
reversing feature. It reacts if a solid object
obstructs or restricts the trunk lid during the
closing procedure. The trunk lid opens again
automatically. The automatic reversing feature
is only an aid and is not a substitute for your
attentiveness to the trunk lid while it is closing.
G WARNING
The reversing feature does not react: R
to soft, light and thin objects, e.g. small fin-
gers R
over the last 1/3 in (8 mm) of the closing
movement
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. Trunk 83
Opening and closing Z

Opening and closing X
To open: pull remote operating switch for
trunk lid C until the trunk lid opens.X
To close: press remote operating switch for
trunk lid C until the trunk lid is completely
closed.
You can open and close the trunk lid from the
driver's seat when the vehicle is stationary and
unlocked.
Unlocking the trunk
! The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
If the trunk cannot be unlocked with the Smart-
Key or KEYLESS-GO, use the mechanical key.
If you use the mechanical key to unlock and
open the trunk lid, the anti-theft alarm system
will be triggered. Switch off the alarm
( Y
page 75). X
Take the mechanical key out of the SmartKey
( Y
page 78).X
Insert the mechanical key into the trunk lid
lock as far as it will go. X
Turn the mechanical key from position G
counter-clockwise as far as it will go to posi-
tion H . Simultaneously pull the trunk lid han-
dle.
The trunk is unlocked. X
Turn the mechanical key back to position G
and remove it. X
Insert the mechanical key into the SmartKey
( Y
page 78).
Trunk emergency release You can open the trunk lid from inside the vehi-
cle with the emergency release button.
X
Press emergency release button C briefly.
The trunk lid unlocks and opens.
The trunk lid can be unlocked and opened with
the trunk lid emergency release when the vehi-
cle is stationary or while driving.
The trunk lid emergency release does not open
the trunk lid if the battery is disconnected or
discharged.
Trunk lid emergency release light: R
Emergency release button C flashes for
30 minutes after the trunk lid is opened. R
Emergency release button C flashes for
60 minutes after the trunk lid is closed.
Side windows
Important safety notes
G WARNING
While opening the side windows, body parts
could become trapped between the side win-
dow and the door frame as the side window
moves. There is a risk of injury.86
Side windows
Opening and closing

Closing the fuel filler flap X
Replace the cap on the filler neck and turn
clockwise until it engages audibly. X
Close the fuel filler flap.
Close the fuel filler flap before locking the vehi-
cle. Otherwise, the locking pin of the central
locking prevents the fuel filler flap from closing.
If you are driving with the fuel filler cap open, the

Glove box X
To open: pull handle C and open glove box
flap D .X
To close: fold glove box flap D upwards until
it engages.
i The glove box can be ventilated
( Y
page 125).
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 H .X
To unlock: insert the mechanical key into the
lock and turn it 90° counter-clockwise to
position G . Eyeglasses compartment
There is a compartment to stow eyeglasses in
the headliner on the driver's side. X
To open: pull down eyeglasses compart-
ment C by the handle.
Stowage compartments in the center
console
Except Mercedes-AMG vehicles X
To open: slide the cover forwards by han-
dle C in the direction of the arrow until it
engages. X
To close: briefly press the front of handle C .
Mercedes-AMG vehicles252
Stowage areas
Stowage and features

Adding engine oil
G WARNIN G
Certain component s in th e engin e compart-
ment, suc h as th e engine, radiato r and part s
of th e exhaust system, can become ver y hot .
Working in th e engin e compartmen t poses a
ris k of injury.
Wher e possible, let th e engin e cool down and
touch only th e component s described in th e
following.
G WARNIN G
If engin e oil comes int o contact wit h hot com-
ponents in th e engin e compartment, it may
ignite. There is a ris k of fir e and injury.
Mak e sur e that engin e oil is no t spilled next to
th e filler neck . Let th e engin e cool down and
thoroughly clean th e engin e oil off th e com-
ponents before starting th e engine.
H Environmenta l not e
When addin g oil, tak e car e no t to spil l any. If
oil enters th e soil or waterways, it is harmful to
th e environment.
! Only use engin e oils and oil filters that hav e
been approve d for vehicles wit h a servic e sys-
tem. You can obtain a list of th e engin e oils
and oil filters tested and approve d in accord -
anc e wit h th e Mercedes-Benz Specification s
for Service Products at any Mercedes-Benz
Service center.
Damage to th e engin e or exhaust system is
caused by th e following:R
usin g engin e oils and oil filters that hav e no t
been specifically approve d for th e servic e
system R
replacing engin e oil and oil filters after th e
interval for replacemen t specifie d by th e
servic e system has been exceededR
usin g engin e oil additives.
! Do no t add to o muc h oil. addin g to o muc h
engin e oil can result in damag e to th e engin e
or to th e catalytic converter. Hav e excess
engin e oil siphoned off . Exampl e X
Turn cap C counter-clockwise and remove it .X
Ad d engin e oil.
If th e oil level is at or belo w th e MIN mar k on
th e oil dipstick , add 1. 1 US qt (1.0 l) of engine
oil. X
Replace cap C on the filler neck and turn
clockwise.
Ensure that the cap locks into place securely. X
Check the oil level again with the oil dipstick
( Y
page 275).
Further information on engine oil ( Y
page 333).
Additional service products
Checking coolant level
G WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following.
G WARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is a risk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.276
Engine compartment
Maintenance and care

X
Park the vehicle on a level surface.
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down. X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 127).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice ( Y
page 127).X
Check the coolant temperature display in the
instrument cluster.
The coolant temperature must be below
158 ‡ (70 †). X
Turn the SmartKey to position 0 in the ignition
lock ( Y
page 127).X
Slowly turn cap C half a turn counter-clock-
wise to allow excess pressure to escape. X
Turn cap C further counter-clockwise and
remove it.
If the coolant is at the level of marker bar

Mercedes-Benz. These batteries provide
increased impact protection to prevent vehicle
occupants from suffering acid burns should the
battery be damaged in the event of an accident.
In order for the battery to achieve the maximum
possible service life, it must always be suffi-
ciently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the vehicle.
In this case, have the battery disconnected at a
qualified specialist workshop. You can also
charge the battery with a charger recommended
by Mercedes-Benz. Contact a qualified special-
ist workshop for further information.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly for
short trips or if you leave it standing idle for a
lengthy period. Consult a qualified specialist
workshop if you wish to leave your vehicle
parked for a long period of time.
Remove the SmartKey if you park the vehicle
and do not require any electrical consumers.
The vehicle will then use very little energy, thus
conserving battery power.
If the power supply has been interrupted, e.g. if
you reconnect the battery, you will have to: R
set the clock. Information on setting the clock
can be found in the Digital Operator's Manual
On vehicles with a multimedia system, the
time is set automatically. R
reset the function for folding the exterior mir-
rors in/out automatically, by folding the mir-
rors out once ( Y
page 104)
Charging the battery
G WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a
risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery.
G WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over the battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion.
G WARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a maximum
charging voltage of 14.8 V.
! Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment ( Y
page 294).X
Open the hood. X
Connect the battery charger to the positive
terminal and ground point in the same order
as when connecting the donor battery in the
jump-starting procedure ( Y
page 294).
If the indicator/warning lamps do not light up at
low temperatures, it is very likely that the dis-
charged battery has frozen. In this case, you
may neither charge the battery nor jump-start
the vehicle. The service life of a thawed-out bat-
tery may be shorter. The starting characteristics
may be impaired, especially at low tempera-
tures. Have the thawed-out battery checked at a
qualified specialist workshop.
Never charge a battery still installed in the vehi-
cle unless a battery charger unit approved by
Mercedes-Benz is being used . A battery charger
unit specially adapted for Mercedes-Benz vehi-
cles and tested and approved by Mercedes-
Benz is available as an accessory. It permits the
charging of the battery in its installed position.
Contact an authorized Mercedes-Benz Center
for further information and availability. Read the
battery charger's operating instructions before
charging the battery.Battery (vehicle) 293
Breakdown assistance Z

! If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehicle.
It is better to have the vehicle transported than
to have it towed away.
If the vehicle has suffered transmission damage,
have it transported on a transporter or trailer.
The automatic transmission must be in position
N when the vehicle is being towed.
The battery must be connected and charged.
Otherwise, you: R
cannot turn the SmartKey to position 2 in the
ignition lock R
cannot shift the automatic transmission to
position N
In the event of damage to the electrical sys-
tem
If the battery is defective, the automatic trans-
mission will be locked in position P . To shift the
automatic transmission to position N , you must
provide power to the vehicle's electrical system
in the same way as when jump-starting
( Y
page 294).
Have the vehicle transported on a transporter or
trailer.
Disarm the automatic locking feature before the
vehicle is towed ( Y
page 82). You could other-
wise be locked out when pushing or towing the
vehicle.
Installing/removing the towing eye
Installing the towing eye
G WARNING
The exhaust tail pipe may be very hot. There is
a risk of burns when removing the rear cover.
Do not touch the exhaust pipe. Take particular
care when removing the rear cover. All vehicles except Mercedes-AMG vehicles
Mercedes-AMG vehicles
The mountings for the removable towing eyes
are located in the bumpers. They are at the front
and at the rear, behind the covers. X
Remove the towing eye from the vehicle tool
kit ( Y
page 286). X
Pull cover C out of the bumper in the direc-
tion of the arrow by inserting your fingers into
the recess. X
Press the mark on cover D inwards in the
direction of the arrow. X
Remove cover D from the opening.X
Screw in the towing eye clockwise as far as it
will go and tighten it.Towing and tow-starting 297
Breakdown assistance Z