Get Opening and closing Guide for Mercedes C Class 4 Door Fourth Generation (2014-2021)

70 Opening and closing

3

4

Unlocks

Opens/closes the boot lid

#

Key

When leaving the vehicle, always take

the key with you and lock the vehicle.

Keep the key out of reach of children.

Overview of key functions

% If indicator lamp 2 does not light up after

pressing the Ü or ß button, the bat‐

tery is weak or possibly discharged. Replace

the battery as soon as possible.

&

WARNING Risk of accident and injury

due to children left unattended in the

vehicle

This also applies to the Digital Vehicle Key

sticker.

If children are left unsupervised in the vehi‐

cle, they could, in particular:

Replacing the key battery (/ page 72).

The key locks and unlocks the following compo‐

nents:

NOTE Damage to the key caused by

magnetic fields

*

R

open doors, thereby endangering other

persons or road users.

#

Keep the key away from strong mag‐

netic fields.

R

the doors

R

get out and be struck by oncoming traf‐

fic.

R

the fuel filler flap

R

the boot lid

R

operate vehicle equipment and become

trapped, for example.

If the vehicle is not opened within approximately

40 seconds after unlocking, it locks again. Anti-

theft protection is primed again.

Do not keep the key together with electronic

devices or metal objects. This can affect the

key's functionality.

In addition, the children could also set the

vehicle in motion, for example by:

R

releasing the parking brake.

R

changing the transmission position.

R

starting the vehicle.

#

Never leave children unattended in the

vehicle.

1

2

Locks

Indicator lamp

Opening and closing 71

#

Activating/deactivating the acoustic locking

verification signal

Changing the unlocking settings

To deactivate: press the ß button on the

key twice in quick succession.

The key indicator lamp flashes twice briefly

and lights up once.

Possible unlocking functions of the key:

Multimedia system:

R

Central unlocking

4

5

Vehicle

î Vehicle settings

R

Unlocking the driver's door and fuel filler flap

To activate: press any button on the key.

5

Acoustic lock

#

% When the vehicle is started with the key in

the stowage compartment of the centre con‐

sole, the key functions are automatically

activated (/ page 152).

To switch between settings: press the

#

Activate O or deactivate ª the function.

Ü and ß buttons simultaneously for

approximately six seconds until the indicator

lamp flashes twice.

Please note:

%

The selected setting for the acoustic locking

verification signal must comply with the rele‐

vant national road and traffic regulations. In

some countries, including Germany, using

the acoustic locking verification signal is for‐

bidden by traffic laws (in accordance with

§16 Para. 1 and §30 Para. 1 of the German

national road traffic regulations). The driver

of the vehicle must comply with these regu‐

lations. In countries where the use of this

function is forbidden, this function is not

activated in the vehicle and must not be acti‐

vated.

Options if the unlocking function for the driver's

door and fuel filler flap has been selected:

Removing/inserting the emergency key

Removing the emergency key

R

To unlock the vehicle centrally: press the

Ü button twice.

R

Vehicles with KEYLESS-GO: if you touch

the inner surface of the door handle on the

driver's door, only the driver's door and fuel

filler flap are unlocked.

Deactivating the key functions

If you do not use the vehicle or a key for an

extended period of time, you can reduce the

energy consumption of the respective key. To do

so, deactivate the key functions.

72 Opening and closing

#

R

Press release knob 1.

You require a CR 2032 3 V cell battery.

#

Keep batteries out of the reach of chil‐

dren.

If batteries are swallowed, seek medical

attention immediately.

Emergency key 2 is pushed out slightly.

Mercedes-Benz recommends that you have the

battery replaced at a qualified specialist work‐

shop.

#

Pull out emergency key 2 until it engages in

the intermediate position.

Press release knob 1 again and fully

remove emergency key 2.

#

Remove the emergency key (/ page 71).

ENVIRONMENTAL NOTE Environmental

damage due to improper disposal of bat‐

teries

+

Inserting the emergency key

#

Press release knob 1.

#

Insert emergency key 2 to the intermediate

position or fully until it engages.

Batteries contain pollutants. It is

illegal to dispose of them with the household

rubbish.

% You can use the intermediate position of

emergency key 2 to attach the key to a key

ring.

#

Replacing the key battery

#

Press release knob 2 down fully and slide

cover 1 in the direction of the arrow.

Dispose of batteries of in an

environmentally responsible manner.

Take discharged batteries to a qualified

specialist workshop or to a collection

point for used batteries.

&

DANGER Serious damage to health

caused by swallowing batteries

#

Fold out cover 1 in the direction of the

arrow and remove.

Remove battery compartment 3 and take

out the discharged battery.

Batteries contain toxic and corrosive sub‐

stances. Swallowing batteries may cause

serious damage to health.

#

Requirements:

There is a risk of fatal injury.

Opening and closing 73

#

There is interference from a powerful radio

signal source

Insert the new battery into battery compart‐

ment 3. Observe the positive pole marking

in the battery compartment and on the bat‐

tery when doing this.

Doors

Notes on the additional door lock

The key function is impaired by, for example:

The additional door lock is only available for

vehicles for the United Kingdom.

R

high voltage power lines

#

Push in battery compartment 3.

R

mobile phones

Re-attach cover 1 and push it until it

engages.

&

WARNING Risk of injury to persons

inside the vehicle when the additional

door lock is activated

R

electronic devices (Notebooks, Tablets)

R

shielding due to metal objects or induction

loops for electrical gate systems or auto‐

matic barriers

Problems with the key

If the additional door lock is activated, the

doors can no longer be opened from the

inside.

You can no longer lock or unlock the vehicle

#

Make sure that there is a sufficient distance

Possible causes:

R

between the key and the potential source of

interference.

#

Never leave persons, in particular chil‐

dren, unattended in the vehicle.

The key battery is weak or discharged.

The key is faulty.

R

You have lost a key

#

If there are persons in the vehicle, do

not activate the additional door lock.

#

Have the key deactivated at a qualified spe‐

cialist workshop.

#

Check the battery using the indicator lamp

(/ page 70).

Replace the key battery, if necessary

(/ page 72).

Use the emergency key to lock or unlock

(/ page 71).

Have the key checked at a qualified specialist

workshop.

The additional door lock is automatically activa‐

ted in the following situations:

#

If necessary, have the mechanical lock

replaced as well.

#

R

The vehicle is locked using the key.

R

The vehicle is locked using KEYLESS-GO.

74 Opening and closing

Centrally locking and unlocking the vehicle

from the inside

If the vehicle has been locked via Mercedes me

connect, the additional door lock is not activa‐

ted.

If the additional door lock is activated, the doors

cannot be opened from the inside.

% After locking you can issue a signal with the

horn.

You can prevent the additional door lock from

being activated by deactivating interior protec‐

tion before locking the vehicle (/ page 94).

Unlocking/opening the doors from the inside

#

United Kingdom only: observe the notes on

the additional door lock (/ page 73).

#

Pull door handle 2.

Locking pin 1 pops up when the door is

unlocked.

#

To unlock: press button 1.

#

To lock: press button 2.

This does not lock or unlock the fuel filler flap.

The vehicle is not unlocked:

R

If you have locked the vehicle using the key.

Opening and closing 75

R

Locking/unlocking the vehicle with KEY‐

LESS-GO

If you have locked the vehicle using KEY‐

LESS-GO.

Requirements:

Locking/unlocking the vehicle with a Digital

Vehicle Key sticker

R

The key is outside the vehicle.

R

The distance between the key and the vehicle

does not exceed 1 m.

Requirements:

R

the vehicle is equipped with the "Digital Vehi‐

cle Key" function

R

The driver's door and the door at which the

door handle is used are closed.

R

a Digital Vehicle Key sticker is present

% Affix the Digital Vehicle Key sticker to your

smartphone; see the Supplement.

% Mercedes-Benz recommends that you carry

the emergency key in case of function

restrictions.

If the vehicle has been parked for longer than

two weeks, the NFC antenna in the door handle

is deactivated.

#

Touch the door handle on the driver's door in

the area where NFC antenna 1 is located

with the part of the Digital Vehicle Key

sticker where the NFC transmitter is located.

The vehicle is locked or unlocked alternately.

#

Pull the door handle.

The NFC antenna is activated.

76 Opening and closing

#

Activating/deactivating the automatic lock‐

ing feature

To unlock the vehicle: touch the inner sur‐

face of the door handle.

To lock the vehicle: touch sensor surface

1 or 2.

Check the battery using the indicator lamp

(/ page 70).

#

Replace the key battery, if necessary

(/ page 72).

Use the emergency key to lock or unlock

(/ page 77).

Have the vehicle and key checked at a quali‐

fied specialist workshop.

The vehicle is locked automatically when the

ignition is switched on and the wheels are turn‐

ing faster than walking pace.

#

Convenience closing: touch recessed sen‐

sor surface 2 until the closing process has

been completed.

% Further information on convenience closing

(/ page 85).

If you open the boot lid from outside, the boot lid

is automatically unlocked.

There is interference from a powerful radio

signal source

The KEYLESS-GO function is impaired by, for

example:

Problems with KEYLESS-GO

R

high voltage power lines

R

mobile phones

electronic devices (Notebooks, Tablets)

You can no longer lock or unlock the vehicle

using KEYLESS-GO.

R

Possible causes:

R

shielding due to metal objects or induction

loops for electrical gate systems or auto‐

matic barriers

R

The key functions have been deactivated.

The key battery is weak or discharged.

R

#

Make sure that there is a sufficient distance

between the key and the potential source of

interference.

R

The key is faulty.

#

To activate: press and hold button 2 for

approximately five seconds until an acoustic

signal sounds.

#

Activate the key functions (/ page 71).

Opening and closing 77

#

To deactivate: press and hold button 1 for

approximately five seconds until an acoustic

signal sounds.

In the following situations, there is a danger of

being locked out when the function is activated:

R

While the vehicle is being tow started/

pushed.

R

If the vehicle is being tested on a roller dyna‐

mometer.

Locking/unlocking the driver's door with the

emergency key

% If you wish to lock the vehicle entirely using

the emergency key, first press the button for

locking from the inside while the driver's

door is open. Then proceed to lock the driv‐

er's door using the emergency key.

#

Remove the emergency key (/ page 71).

Insert the emergency key as far as it will go

into opening 1 in the cover.

To unlock: turn the emergency key anti-

clockwise to position 1.

To lock: turn the emergency key clockwise to

position 1.

Carefully press the cover onto the lock cylin‐

der until it engages and is seated firmly.

#

Pull and hold the door handle.

Pull the cover on the emergency key as

straight as possible away from the vehicle

until it releases.

#

Release the door handle.

78 Opening and closing

#

Vehicles with HANDS-FREE ACCESS: make

a kicking movement with your foot below the

bumper (/ page 81).

If the boot lid is stopped in an intermediate

position, pull it upwards. Release it as soon

as it begins to open.

Boot

Opening the boot lid

With the boot lid opening limiter activated,

manually pull the stopped boot lid upwards.

Vehicles with boot lid convenience closing

&

DANGER Risk of exhaust gas poisoning

Combustion engines emit poisonous exhaust

gases such as carbon monoxide. Exhaust

gases can enter the vehicle interior if the

boot lid is open when the engine is running,

especially if the vehicle is in motion.

If an obstacle obstructs the boot lid during the

automatic opening process, blockage detection

will stop the boot lid. The automatic blockage

detection function is only an aid and is not a

substitute for your attentiveness.

#

Always switch off the engine before

opening the boot lid.

Closing the boot lid

#

Never drive with the boot lid open.

&

WARNING Risk of injury from unsecured

items in the vehicle

NOTE Damage to the boot lid by obsta‐

cles above the vehicle

*

If objects, luggage or loads are not secured

or not secured sufficiently, they could slip,

tip over or be thrown around and thereby hit

vehicle occupants.

There is a risk of injury, particularly in the

event of sudden braking or a sudden change

in direction.

The boot lid swings upwards when it is

opened.

#

Therefore, make sure that there is suffi‐

cient clearance above the boot lid.

#

Pull boot lid remote operating switch 1.

#

Press and hold the p button on the key.

#

Pull the boot lid handle.

Opening and closing 79

#

R

Always stow objects in such a way that

they cannot be thrown around.

Before the journey, secure objects, lug‐

gage or loads against slipping or tipping

over.

Press the closing or locking button

on the boot lid.

Pull the boot lid handle.

#

Vehicles with HANDS-FREE ACCESS: it is

also possible to stop the closing process by

making a kicking movement below the rear

bumper.

Pull the boot lid handle. Release it as soon as

it begins to close.

If the boot lid is stopped in an intermediate

position, push it downwards.

The boot lid will continue to close.

Observe the notes on loading the vehicle.

#

Pull the boot lid downwards using the handle

recess and push it closed.

#

Vehicles with boot lid convenience closing

&

WARNING Risk of becoming trapped

during automatic closing of the boot lid

Parts of the body could become trapped.

There may be people in the closing area.

#

Press boot lid remote operating switch 1.

#

Make sure that nobody is in the vicinity

of the closing area during the closing

process.

#

Use one of the following options to stop

the closing process:

R

Press the p button on the key.

R

Press or pull the remote operating

switch on the driver's door.

80 Opening and closing

#

With the boot lid completely open, press and

hold the p button on the key. The key

must be in the vicinity of the vehicle.

In these situations in particular, the reversing

function cannot prevent someone being trap‐

ped.

#

Vehicles with HANDS-FREE ACCESS

Ensure that no body parts are in the

closing area.

#

With the boot lid completely opened, make a

#

If someone is trapped, use one of the

kicking movement with your foot below the

following options:

bumper (/ page 81).

R

Press the p button on the key.

Boot lid automatic reversing function

R

Press the remote operating switch

on the driver's door.

The boot lid is fitted with automatic blockage

detection with a reversing function. If an obsta‐

cle stops the boot lid during the automatic clos‐

ing procedure, it will automatically open again.

The automatic reversing function is only an aid

and is not a substitute for your attentiveness.

R

Press the closing or locking button

on the boot lid.

R

Pull the boot lid handle.

#

During the closing process, make sure that

no body parts are in the closing area.

#

Press closing button 1 on the boot lid.

Vehicles with KEYLESS-GO

&

WARNING Risk of becoming trapped

despite reversing function

#

Press locking button 2 on the boot lid.

If a key is detected outside the vehicle, the

boot lid will close and the vehicle will be

locked.

The reversing function will not react:

R

to soft, light and thin objects, e.g. fingers

R

towards the end of the closing procedure

Opening and closing 81

HANDS-FREE ACCESS function

% A warning tone sounds while the boot lid is

When making the kicking movement, make sure

that you are standing firmly on the ground. You

could otherwise lose your balance, e.g. on ice.

opening or closing.

&

WARNING Risk of burns caused by a hot

exhaust system

Observe the following notes:

R

The key is behind the vehicle.

The vehicle exhaust system can become very

hot. If you use HANDS-FREE ACCESS, you

could burn yourself by touching the exhaust

system.

R

Stand at least 30 cm away from the vehicle

while performing the kicking movement.

R

Do not come into contact with the bumper

while making the kicking movement.

#

Always ensure that you only make a

R

Do not carry out the kicking movement too

slowly.

kicking movement within the detection

range of the sensors.

R

The kicking movement must be towards the

vehicle and back again.

NOTE Damage to the vehicle caused by

unintentionally opening the boot lid:

*

R

when using an automatic car wash

when using a high pressure cleaner

With HANDS-FREE ACCESS you can open, close

or interrupt boot lid movement by performing a

kicking movement under the rear bumper.

The kicking movement triggers the opening or

closing process alternately.

#

Deactivate KEYLESS-GO or make sure

that the key located is at least 3 m

away from the vehicle in such situa‐

tions.

Observe the notes when opening (/ page 78)

and closing (/ page 78) the boot lid.

82 Opening and closing

The boot lid could be opened or closed uninten‐

tionally, in the following situations:

R

A person's arms or legs are moving in the

sensor detection range, e.g. when polishing

the vehicle or picking up objects.

R

Objects are moved or placed behind the vehi‐

cle, e.g. tensioning straps or luggage.

R

Clamping straps, tarpaulins or other cover‐

ings are pulled over the bumper.

R

A protective mat with a length reaching over

the boot sill down into the detection range of

the sensors is used.

1

Detection range of the sensors

If several consecutive kicking movements are

not successful, wait ten seconds.

R

The protective mat is not secured correctly.

System limits

R

When working on the trailer hitch, trailers or

rear bicycle racks.

#

The system may be impaired or may not function

in the following cases:

To switch on: slide the switch to position

1.

To switch off: slide the switch to position

2.

Deactivate the key functions (/ page 71) or do

not carry the key about your person in such sit‐

uations.

R

The sensors are dirty, e.g. due to road salt or

snow.

R

The kicking movement is made using a pros‐

thetic leg.

% If an accident has been detected, the boot

will unlock even if separate locking is

switched on.

Switching separate boot locking on or off

If you centrally unlock the vehicle while separate

locking is activated, the boot will remain locked.

Opening and closing 83

Activating/deactivating the boot lid opening

limiter

#

If someone is trapped, release the but‐

ton immediately or pull it in order to

close the side window again.

When leaving the vehicle, always take

the key with you and lock the vehicle.

Never leave children unattended in the

vehicle.

Multimedia system:

4

5

Vehicle

î Vehicle settings

&

WARNING Risk of becoming trapped

when closing a side window

5

Boot lid open. limiter

Requirements:

This function allows you to avoid bumping the

boot lid on a low garage ceiling, for example.

R

The power supply or the ignition is switched

on.

When closing a side window, body parts

could be trapped in the closing area in the

process.

#

Activate O or deactivate ª the function.

#

When closing, make sure that no body

parts are in the closing area.

Side windows

Opens and closes the side windows

#

If someone is trapped, release the but‐

ton immediately or press the button in

order to reopen the side window.

&

WARNING Risk of becoming trapped

when opening a side window

&

WARNING Risk of becoming trapped

when children operate the side windows

When you open a side window, parts of the

body could be drawn in or become trapped

between the side window and window frame.

Children could become trapped if they oper‐

ate the side windows, particularly when unat‐

tended.

#

When opening, make sure that nobody

is touching the side window.

#

Activate the child safety lock for the

rear side windows.

84 Opening and closing

#

To interrupt automatic operation: press or

pull the W button again.

The reversing function cannot prevent some‐

one from becoming trapped in these situa‐

tions.

When the vehicle is switched off, the side win‐

dows can continue being operated.

This function is available for around four minutes

or until a front door is opened.

#

During the closing process, make sure

that no body parts are in the closing

area.

#

If someone becomes trapped, press the

Automatic reversing function of the side win‐

dows

If an object impedes a side window during the

closing process, the side window will open again

automatically. The automatic reversing function

is only an aid and is not a substitute for your

attentiveness.

W button to open the side window

again.

Automatic function of the side windows

In the following cases, the side windows will be

closed automatically when the vehicle is

switched off:

#

During the closing process, make sure that

no body parts are in the closing area.

1

2

Closing

Opening

R

if it starts to rain (detected by the rain sensor

on the windscreen)

&

WARNING Risk of becoming trapped

despite there being reversing protection

on the side window

R

in extreme temperatures

The buttons on the driver's door take prece‐

dence.

R

after a certain time (depending on the on-

board electrical system voltage)

#

To start automatic operation: press the

W button beyond the point of resistance

or pull and release it.

The reversing function does not react:

R

if there is a malfunction in the power supply

R

to soft, light and thin objects, e.g. fingers.

R

during resetting.

The side windows will be closed as far as the

ventilation position.

Opening and closing 85

#

Convenience closing (closing the vehicle

from outside)

Vehicles with a sliding sunroof: the side win‐

dows will be closed completely if the sliding sun‐

roof is open.

If the side windows are obstructed during auto‐

matic closing, the side window concerned will

open again slightly. The automatic function for

the sliding sunroof and the side windows will

then be deactivated.

Press and hold the Ü button on the key.

The following functions are performed:

R

The vehicle is unlocked.

&

WARNING Risk of entrapment due to not

paying attention during convenience

closing

R

The side windows are opened.

R

The sliding sunroof is opened.

R

The panoramic sliding roof is opened.

When the convenience closing feature is

operating, parts of the body could become

trapped in the closing area of the side win‐

dow and the sliding sunroof.

R

The seat ventilation of the driver's seat is

switched on.

Convenience opening (ventilating the vehicle

before starting a journey)

% If the roller sunblind of the panoramic sliding

sunroof is closed, the roller sunblind is

opened first.

#

When the convenience closing feature

is operating, monitor the entire closing

process and make sure that no body

parts are in the closing area.

&

WARNING Risk of entrapment when

opening a side window

#

To interrupt convenience opening: release

the Ü button.

To continue convenience opening: press

and hold the Ü button again.

#

When opening a side window, parts of the

body could be drawn in or become trapped

between the side window and window frame.

#

Press and hold the ß button on the key.

The following functions are performed:

#

When opening, make sure that nobody

is touching the side window.

R

The vehicle is locked.

#

Release the button immediately if

somebody becomes trapped.

The side windows are closed.

The sliding sunroof is closed.

The panoramic sliding roof is closed.

86 Opening and closing

#

A side window cannot be closed and you can‐

not see the cause.

To interrupt convenience closing: release

the ß button.

least one more second (follow-up adjust‐

ment).

The side window will be closed without the

automatic reversing function.

The side windows cannot be opened or

closed using the convenience opening fea‐

ture.

#

Check to see whether any objects are in the

To close the roller sunblinds: press and

hold the ß button again.

window guide.

#

Adjust the side windows.

% Convenience closing can also be operated

with KEYLESS-GO (/ page 75).

Adjusting the side windows

R

The key battery is weak or discharged.

If a side window is obstructed during closing and

reopens again immediately:

Problems with the side windows

#

Check the battery using the indicator lamp

(/ page 70).

#

Immediately after this, pull and hold the cor‐

&

WARNING Risk of becoming trapped or

fatally injured if reversing protection is

not activated

responding button again until the side win‐

dow has closed and hold the button for at

least one more second (re-adjustment).

The side window will be closed without the

automatic reversing function.

#

Replace the key battery if necessary

(/ page 72).

If you close a side window again immediately

after it has been blocked, the side window

will close with increased or maximum force.

The reversing function is then not active and

body parts may become trapped.

Sliding sunroof

Opening and closing the sliding sunroof

If the side window is obstructed again and

reopens again immediately:

% The term "sliding sunroof" also refers to the

panorama sliding sunroof.

#

Make sure that no parts of the body are

in the closing area.

To stop the closing process, release the

#

Immediately after this, pull and hold the cor‐

responding button again until the side win‐

dow has closed and hold the button for at

#

button or press the button again to

reopen the side window.

Opening and closing 87

#

Never leave children unattended in the

vehicle.

When leaving the vehicle, always take

the key with you and lock the vehicle.

&

WARNING Risk of becoming trapped

when the sliding sunroof is being opened

and closed

NOTE Malfunction due to snow and ice

*

Snow and ice may cause the sliding sunroof

to malfunction.

Body parts may become trapped in the range

of movement.

#

Open the sliding sunroof only if it is free

of snow and ice.

&

WARNING Risk of becoming trapped

when the roller sunblind is being opened

and closed

#

During opening and closing, make sure

that no body parts are in the range of

movement.

Release the button immediately if

somebody becomes trapped.

NOTE Damage caused by protruding

objects

*

#

Body parts may become trapped between

the roller sunblind and frame or sliding roof.

Objects that protrude from the sliding sun‐

roof may damage the sealing strips.

or

#

When opening or closing, make sure

that no body parts are in the roller sun‐

blind's range of movement.

Release the button immediately if

somebody becomes trapped.

#

Do not allow anything to protrude from

the sliding sunroof.

Briefly press the button in any direction

during automatic operation.

The opening or closing process will be

stopped.

#

NOTE Important points to remember

when a roof luggage rack is fitted

*

or

&

WARNING Risk of entrapment if the slid‐

ing sunroof is operated by children

#

Briefly press the button in any direction

When a roof luggage rack is fitted, raising or

opening the sliding sunroof may be limited.

during automatic operation.

The opening or closing process will be

stopped.

#

Children operating the sliding sunroof could

get caught in the moving parts, particularly if

unattended.

Check whether the sliding sunroof can

be raised or opened when a roof lug‐

gage rack is fitted.

88 Opening and closing

The panorama sliding sunroof can be operated

only when the roller sunblind is open.

#

If in doubt, do not raise or open the

sliding sunroof.

&

WARNING Risk of becoming trapped

despite the reversing function being

active

#

Check whether the sliding sunroof can be

raised or opened when a roof luggage rack is

fitted.

In particular, the reversing function does not

react:

#

To start automatic operation: press the

R

to soft, light and thin objects, e.g. fingers.

towards the end of the closing procedure.

3 button beyond the point of resistance

or pull and release it.

R

during resetting.

#

To interrupt automatic operation: briefly

press the 3 button in any direction.

The opening/closing process will be stop‐

ped.

#

During the closing process, make sure

that no body parts are in the closing

area.

Release the button immediately if

somebody becomes trapped.

#

Automatic reversing function of the sliding

sunroof

If an obstacle is obstructing the sliding sunroof

during the closing process, the sliding sunroof

will open again automatically. The automatic

reversing function is only an aid and is not a sub‐

stitute for your attentiveness.

or

#

Briefly press the button in any direction

during automatic operation.

The closing process will be stopped.

1

2

3

To raise

To open

To close/lower

#

During the closing process, make sure that

Automatic reversing function of the roller

sunblind

no body parts are in the closing area.

If an obstacle is obstructing the roller sunblind

during the closing process, the roller sunblind

will open again automatically. The automatic

Use the 3 button to operate the panorama

sliding sunroof and the roller sunblind.

Opening and closing 89

Automatic functions of the sliding sunroof

reversing function is only an aid and is not a sub‐

stitute for your attentiveness.

the sliding sunroof and the side windows will

then be deactivated.

% The term "sliding sunroof" also refers to the

#

When closing the roller sunblind, make sure

panorama sliding sunroof.

Rain closing function when driving

Vehicles with a panorama sliding sunroof: if

it starts to rain, the raised sliding sunroof will

automatically be lowered while the vehicle is in

motion.

that no body parts are in the range of move‐

ment.

By pushing or pulling the 3 button, you can

interrupt the automatic functions: "Rain closing

function when driving" and "Automatic lower‐

ing".

The sliding sunroof will be closed automatically

when the vehicle has been switched off in the

following situations:

&

WARNING Risk of becoming trapped

despite reversing function

Automatic lowering function

In particular, the reversing function does not

react to soft, light and thin objects, e.g. fin‐

gers.

Vehicles with a panorama sliding sunroof: if

the sliding sunroof is raised at the rear, it will

automatically be lowered slightly at higher

speeds. At low speeds, it will be raised again

automatically.

R

if it starts to rain

#

When closing the roller sunblind, make

Rain is detected by a rain sensor on the

windscreen.

sure that no body parts are in the range

of movement.

#

R

in the event of extreme outside temperatures

Release the button immediately if

&

WARNING Risk of becoming trapped by

automatic lowering of the sliding sunroof

somebody becomes trapped.

R

after a certain time (depending on the on-

board electrical system voltage)

or

At higher speeds, the raised sliding sunroof

will automatically be lowered slightly at the

rear.

#

R

if there is a malfunction in the power supply

Briefly press the button in any direction

during the automatic closing process.

The closing process will be stopped.

The sliding sunroof will rise at the rear in order

to continue ventilating the vehicle interior.

If the sliding sunroof is obstructed during an

automatic closing procedure, the roof will be

opened again slightly. The automatic function for

#

Make sure that nobody reaches into the

sliding sunroof's range of movement

while the vehicle is in motion.

90 Opening and closing

#

The sliding sunroof cannot be closed and you

cannot see the cause.

Push the 3 button up to the point of

resistance repeatedly until the sliding sun‐

roof is fully open.

#

If somebody becomes trapped, briefly

push the sliding sunroof button for‐

wards or backwards.

% The term "sliding sunroof" also refers to the

#

panorama sliding sunroof.

Press the 3 button for another second.

Close the sliding sunroof.

If the sliding sunroof is obstructed during closing

and reopens again slightly:

Problems with the sliding sunroof

Vehicles with a panorama sliding sunroof:

the sliding sunroof or the roller sunblind is

not operating smoothly.

#

Immediately after automatic reversing, pull

&

WARNING Risk of becoming trapped or

fatal injuries when the sliding sunroof is

closed again

and hold the 3 button down again to the

point of resistance until the sliding sunroof is

closed.

The sliding sunroof will be closed with

increased force.

#

Reset the sliding sunroof and the roller sun‐

blind.

If the sliding sunroof is closed again immedi‐

ately after it has been blocked or reset, it will

close with increased force.

Resetting the sliding sunroof and the roller

sunblind

If the sliding sunroof is obstructed again and

reopens again slightly:

#

Make sure that no parts of the body are

#

Pull and hold the 3 button little by little

in the closing area.

until the sliding sunroof is fully closed.

#

Release the button immediately if

somebody becomes trapped.

#

Repeat the previous step.

#

Pull and hold the 3 button little by little

until the roller sunblind is fully closed.

Use automatic operation to fully open and

then close the sliding sunroof.

The sliding sunroof will be closed again with

increased force.

or

#

Vehicles without a panorama sliding sun‐

roof: the sliding sunroof is not operating

smoothly.

Briefly press the button in any direction

during the automatic closing process.

The closing process will be stopped.

#

Reset the sliding sunroof.

Resetting the sliding sunroof

Opening and closing 91

Extending or retracting the rear-window

roller sunblind

Roller sunblinds

Extending the rear side window roller sun‐

blinds

&

WARNING Risk of becoming trapped

when extending or retracting the roller

sunblind

NOTE Damage to the inertia reel due to

it snapping back

*

Body parts may become trapped in the roller

sunblind's range of movement.

If suddenly snapped back, the inertia reel

may be damaged.

#

Ensure there are no body parts in the

range of movement.

#

Always move the roller sun blind man‐

ually.

#

If someone becomes trapped, briefly

press the button again.

#

Do not drive with the roller sun blind

hooked in and one or more side win‐

dows open at the same time.

The opening or closing process will

briefly be stopped. The roller sunblind

will then return to its starting position.

#

Pull the roller sunblind out by tab 1 and

hook it onto brackets 2 at the top of the

window.

NOTE Damage caused by objects

*

Objects could cause malfunctions of the

roller sunblind.

#

Make sure that the roller sunblind can

move freely.

92 Opening and closing

The immobiliser is automatically activated when

the ignition is switched off and deactivated when

the ignition is switched on.

ATA (Anti-Theft Alarm system)

Function of the ATA system

If the ATA system is primed, a visual and audible

alarm is triggered in the following situations:

R

when a door is opened

R

when the boot lid is opened

R

when the bonnet is opened

R

when interior protection is triggered

(/ page 93)

R

when tow-away protection is triggered

(/ page 93)

#

To extend or retract: press button 1.

Indicator lamp 1 flashes when the ATA system

is primed.

The ATA system is primed automatically after

approximately ten seconds in the following situa‐

tions:

Anti-theft protection

Function of the immobiliser

The ATA system is deactivated automatically in

the following situations:

R

after unlocking the vehicle with the key

R

after locking the vehicle with the key

The immobiliser prevents your vehicle from

being started without the correct key.

R

after unlocking the vehicle using KEYLESS-

GO

R

after locking the vehicle using KEYLESS-GO

Opening and closing 93

R

Priming/deactivating tow-away protection

after pressing the start/stop button with the

key in the stowage compartment

(/ page 152)

Tow-away protection is automatically primed

after approximately 60 seconds:

Multimedia system:

R

after locking the vehicle with the key

4

5

Vehicle

î Vehicle settings

R

% When the Mercedes‑Benz emergency call

system is active and the alarm sounds for

more than 30 seconds, a message is auto‐

matically sent to the Customer Assistance

Centre (/ page 336).

after locking the vehicle using KEYLESS-GO

5

Tow-away protection

#

Tow-away protection is only primed when the fol‐

lowing components are closed:

Activate O or deactivate ª the function.

Tow-away protection is primed again in the fol‐

lowing cases:

R

the doors

R

the boot lid

R

The vehicle is unlocked again.

A door is opened.

The vehicle is locked again.

Deactivating the ATA

#

Press the Ü, ß or p button on the

key.

or

Tow-away protection is automatically deactiva‐

ted:

R

after pressing the Ü or p button on

the key

after pressing the start/stop button with the

key in the stowage compartment

(/ page 152)

after unlocking the vehicle using KEYLESS-

GO

#

Press the start/stop button with the key in

the stowage compartment (/ page 152)

Function of interior protection

R

When interior protection is primed, a visual and

audible alarm is triggered if movement is detec‐

ted in the vehicle interior.

Interior protection is primed automatically after

approximately ten seconds:

Deactivating the alarm using KEYLESS-GO

#

Grasp the outside door handle with the key

outside the vehicle.

R

when using HANDS-FREE ACCESS

R

after locking the vehicle with the key

Function of tow-away protection

Information on collision detection on a parked

vehicle (/ page 182).

R

after locking the vehicle using KEYLESS-GO

An audible and visual alarm is triggered if an

alteration to your vehicle's angle of inclination is

detected while tow-away protection is primed.

94 Opening and closing

Priming/deactivating interior protection

Interior protection is only primed when the fol‐

lowing components are closed:

Multimedia system:

R

the doors

4

5

Vehicle

î Vehicle settings

R

the boot lid

5

Interior motion sensor

#

Interior protection is automatically deactivated:

Activate O or deactivate ª the function.

R

after pressing the Ü or p button on

the key

Interior protection is primed again in the follow‐

ing cases:

R

after pressing the start/stop button with the

The vehicle is unlocked again.

A door is opened.

The vehicle is locked again.

key in the stowage compartment

R

(/ page 152)

after unlocking the vehicle using KEYLESS-

GO

R

when using HANDS-FREE ACCESS

The following situations can lead to a false

alarm:

R

moving objects such as mascots in the vehi‐

cle interior

R

when the side window is open

R

when the sliding sunroof is open

R

when the panoramic sliding sunroof is open

Opening and closing for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

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