Get Opening and closing -> SmartKey Guide for Mercedes A Class 4 Door Third Generation (2018-2026)

Opening and closing

SmartKey

66

3

4

5

#

Unlocks

Opens the trunk lid

Panic alarm

When leaving the vehicle, always take the

SmartKey with you and lock the vehicle.

Overview of kkey functions

Keep the vehicle SmartKey out of reach

of children.

&

WARNING Risk of accident and injury due

to children leꢀ unattended in the vehicle

%

If indicator lamp 2 does not light up aꢀer

pressing the Ü or ß button, the battery

is weak or possibly discharged. Replace the

battery as soon as possible.

*

NOTE Damage to the SmartKey caused by

magnetic ꢂelds

If children are leꢀ unsupervised in the vehicle,

they could, in particular:

R

#

open doors, thereby endangering other

persons or road users.

Keep the SmartKey away from strong

magnetic ꢂelds.

Replace the key battery (/ page 68).

The key locks and unlocks the following compo-

nents:

R

get out and be struck by oncoming traꢁc.

R

operate vehicle equipment and become

trapped, for example.

R

Doors

R

Fuel ꢂller ꢃap

In addition, the children could also set the

vehicle in motion, for example by:

R

Trunk lid

If the vehicle is not opened within approximately

40 seconds aꢀer unlocking, it locks again. Anti-

theꢀ protection is activated again.

R

releasing the parking brake.

R

changing the transmission position.

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starting the vehicle.

Do not keep the key together with electronic devi-

ces or metal objects. This can aꢄect the key's

functionality.

#

Never leave children unattended in the

vehicle.

Vehicle SmartKey with panic alarm

Locks

Indicator lamp

1

2

Opening and closing

67

#

Activating/deactivating the acoustic locking veriꢂ-

cation signal

To deactivate: brieꢃy press button 1 again.

Deactivating the function of the SmartKey

or

Vehicles with KEYLESS-GO: if you deactivate the

function of the SmartKey, the KEYLESS-GO func-

tions are also deactivated. Access or drive author-

ization by KEYLESS-GO is then no longer possible

with that particular SmartKey. Activate the func-

tion of the SmartKey so that all its functions will

again be available.

Multimedia system:

5

#

Press the start/stop button.

A SmartKey belonging to the vehicle must be

detected in the vehicle.

4

5

©

Settings

Vehicle

#

Activate or deactivate Acoustic Lock.

Changing the unlocking settings

Arming//disarming the pannic alarrm

Requirements:

R

The vehicle is switched oꢄ.

Possible unlocking functions of the SmartKey:

You can also deactivate the function of the Smart-

Key to reduce the energy consumption of the

SmartKey if you do not use the vehicle or a Smart-

Key for an extended period of time.

R

Central unlocking

R

Unlocking the driver's door and fuel ꢂller ꢃap

#

To switch between settings: press the Ü

#

To deacttivate: press the ß button on the

and ß buttons simultaneously for approx-

imately six seconds until the indicator lamp

ꢃashes twice.

SmartKey twice in quick succession.

The SmartKey indicator lamp ꢃashes twice

brieꢃy and lights up once.

Options if the unlocking function for the driver's

door and fuel ꢂller ꢃap has been selected:

#

To activate: press any button on the SmartKey.

%

When the vehicle is started with the SmartKey

in the marked space of the center console,

the function of the SmartKey is automatically

activated (/ page 129).

R

To unlock the vehicle centrally: press the

Ü button twice.

R

Vehicles wwith KEYLESS-GO: if you touch the

#

To activate: press button 1 for approximately

one second.

A visual and audible alarm is triggered.

inner surface of the door handle on the driv-

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

ꢂller ꢃap are unlocked.

Opening and closing

68

Removing/insertiing thee emergency key

Removing the emergency key

Inserting the emergency key

#

If batteries are swallowed, seek medical

attention immediately.

#

Press release button 1.

#

Insert emergency key 2 to the intermediate

position or fully until it engages.

+

ENVIRONMENTAL NOTE Environmental

damage due to improper disposal of bat-

teries

%

You can use the intermediate position of

emergency key 2 to attach the SmartKey to

a key ring.

Replaciing the SmartKeey battery

Batteries contain pollutants. It is

illegal to dispose of them with the household

rubbish.

&

DANGER Risk of fatal injuries due to swal-

lowing batteries

#

Press release button 1.

Emergency key 2 is pushed out slightly.

Batteries contain toxic and corrosive substan-

ces. Swallowing batteries may cause severe

internal burns to occur within two hours.

#

Pull out emergency key 2 until it engages in

the intermediate position.

Dispose of batteries in an

environmentally responsible manner.

Take discharged batteries to a qualiꢂed

specialist workshop or to a collection

point for used batteries.

There is a risk of fatal injury.

#

%

Keep batteries out of the reach of chil-

dren.

Depending on the vehicle's equipment, the

intermediate position is not available.

#

If the cap and/or the battery compart-

Press release button 1 again and fully

remove emergency key 2.

ment does not close securely, do not use

the SmartKey any longer and keep out of

the reach of children.

Requirements:

R

You require a CR 2032 3 V cell battery.

Opening and closing

69

Mercedes-Benz recommends that you have the

battery replaced at a qualiꢂed specialist work-

shop.

the battery compartment and on the battery

when doing this.

There is interference from a powerful radio signal

source

#

Push in battery compartment 3.

Possible causes if the function of the SmartKey is

impaired:

#

Remove the emergency key (/ page 68).

Re-attach cover 1 and push it until it

engages.

R

High voltage power lines

R

Mobile phones

R

Problems with the SmartKey, troublleshootinng

Electronic devices (notebooks, tablets)

R

Shielding due to metal objects or induction

loops for electrical gate systems or automatic

barriers

You can no longer lock or unlock the vehicle

Possible causes:

R

The SmartKey battery is weak or discharged.

#

Make sure that there is suꢁcient distance

between the SmartKey and the potential

source of interference.

#

Check the battery using the indicator lamp

(/ page 66).

#

Replace the SmartKey battery, if necessary

(/ page 68).

#

Press release knob 2 down fully and slide

cover 1 in the direction of the arrow.

You have lost a SmartKey

#

Have the SmartKey deactivated at a qualiꢂed

specialist workshop.

#

Use the replacement SmartKey.

#

Fold out cover 1 in the direction of the arrow

and remove.

#

Use the emergency key to lock or unlock

(/ page 72).

#

If necessary, have the mechanical lock

replaced as well.

#

Remove battery compartment 3 and take

out the discharged battery.

#

Have the SmartKey checked at a qualiꢂed spe-

cialist workshop.

#

Insert the new battery into battery compart-

ment 3. Observe the positive pole marking in

Opening and closing -> SmartKey for Your Mercedes A Class 4 Door Third Generation (2018-2026)

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