Get Opening and closing -> SmartKey Guide for Mercedes B Class SUV Second Generation (2011-2017)

SmartKey

Important safety notes

WARNING

If children are left unsupervised in the vehicle,

they could:

open the doors, thus endangering other

people or road users.

get out and disrupt traffic.

operate the vehicle's equipment.

Additionally, children could set the vehicle in

motion if, for example, they:

release the parking brake.

shift the transmission out of park position P

start the vehicle's drive system.

There is a risk of an accident and injury.

When leaving the vehicle, always take the

SmartKey with you and lock the vehicle. Never

leave children or animals unattended in the

vehicle. Always keep the SmartKey out of

reach of children.

WARNING

If you attach heavy or large objects to the

SmartKey, the SmartKey could be uninten-

tionally turned in the ignition lock. This could

cause the engine to be switched off. There is a

risk of an accident.

Do not attach any heavy or large objects to the

SmartKey. Remove any bulky key rings before

inserting the SmartKey into the ignition lock.

Keep the SmartKey away from strong mag-

netic fields. Otherwise, the remote control

function could be affected.

Strong magnetic fields can occur in the vicin-

ity of powerful electrical installations.

Do not keep the SmartKey:

with electronic devices, e.g. a mobile phone

or another SmartKey.

with metallic objects, e.g. coins or metal foil.

inside metallic objects, e.g. a metal case

SmartKey functions

& To lock the vehicle

;

% To unlock the vehicle

To unlock centrally: press the % button.

If you do not open the vehicle within approx-

imately 40 seconds of unlocking:

the vehicle is locked again.

anti-theft protection is reactivated.

To lock: press the & button.

The SmartKey centrally locks/unlocks:

the doors

the tailgate

the charge socket flap

The turn signals flash once when unlocking and

three times when locking.

When the locator lighting is activated via the

multimedia system, it lights up when it is dark

after the vehicle is unlocked with the remote

control (see the separate operating instruc-

tions).

You can also set an audible signal to confirm

that the vehicle has been locked. The audible

signal can be activated and deactivated using

the on-board computer (Y page 166).

KEYLESS-GO

General notes

Bear in mind that the drive system can be star-

ted by any of the vehicle occupants if there is a

SmartKey in the vehicle.

SmartKey

Opening and closing

Locking and unlocking

You can start, lock or unlock the vehicle using

KEYLESS-GO. To do this, you only need carry the

SmartKey with you. You can combine the func-

tions of KEYLESS-GO with those of a conven-

tional SmartKey. Unlock the vehicle by using

KEYLESS-GO, for instance, and lock it using the

& button on the SmartKey.

The driver's door and the door at which the han-

dle is used, must both be closed. The SmartKey

must be outside the vehicle. When locking or

unlocking with KEYLESS-GO, the distance

between the SmartKey and the corresponding

door handle must not be greater than 3 ft (1 m).

A check which periodically establishes a radio

connection between the vehicle and the Smart-

Key determines whether a valid SmartKey is in

the vehicle. This occurs, for example:

when starting the drive system

while driving

when the external door handles are touched

during convenience closing

To unlock the vehicle: touch the inner sur-

face of the door handle.

To lock the vehicle: touch sensor surface :

or ;.

Make sure that you do not touch the inner

surface of the door handle.

Convenience closing feature: touch

recessed sensor surface ; for an extended

period.

Further information on the convenience clos-

ing feature (Y page 77).

To unlock the tailgate: pull tailgate han-

dle :.

Deactivating and activating

If you do not intend to use the vehicle for a lon-

ger period of time, you can deactivate KEYLESS-

GO. The SmartKey will then use very little power,

thereby conserving battery power. For the pur-

poses of activation/deactivation, the vehicle

must not be nearby.

To deactivate: press the & button on the

SmartKey twice in rapid succession.

The battery check lamp of the SmartKey

flashes twice briefly and lights up once, then

KEYLESS-GO is deactivated (Y page 69).

To activate: press any button on the Smart-

Key.

Insert the SmartKey into the ignition lock.

KEYLESS-GO and all of its associated features

are available again.

Changing the settings of the locking

system

You can change the settings of the locking sys-

tem. This means that only the driver's door and

the charge socket flap are unlocked when the

vehicle is unlocked. This is useful if you fre-

quently travel on your own.

To change the setting: press and hold the

% and & buttons simultaneously for

SmartKey

Opening and closing

approximately six seconds until the battery

check lamp flashes twice (Y page 69).

If the setting of the locking system is changed

within the signal range of the vehicle, pressing

the & or % button:

locks or

unlocks the vehicle

The SmartKey now functions as follows:

To unlock: press the % button once.

To unlock centrally: press the % button

twice.

To lock centrally: press the & button.

The KEYLESS-GO function is changed as fol-

lows:

To unlock the driver's door: touch the inner

surface of the door handle on the driver's

door.

To unlock centrally: touch the inner surface

of the door handle on the front-passenger

door or the rear door.

To lock centrally: touch the outer sensor

surface on one of the door handles.

To restore the factory settings: press and

hold the % and & buttons simultane-

ously for approximately six seconds until the

battery check lamp flashes twice

(Y page 69).

Mechanical key

General notes

If the vehicle can no longer be locked or

unlocked with the SmartKey or KEYLESS-GO,

use the mechanical key.

If you use the mechanical key to unlock and

open the driver's door or the trunk lid, the anti-

theft alarm system will be triggered (Y page 65).

There are several ways to turn off the alarm:

To deactivate the alarm with the key: press

the % or & button on the key.

Insert the SmartKey into the ignition lock.

To deactivate the alarm with KEYLESS-GO:

press the Start/Stop button in the ignition

lock. The SmartKey must be in the vehicle.

Lock or unlock the vehicle using KEYLESS-

GO. The SmartKey must be outside the vehi-

cle.

If you unlock the vehicle using the mechanical

key, the charge socket flap will not be unlocked

automatically.

To unlock the charge socket flap: insert the

SmartKey into the ignition lock.

Removing the mechanical key

Push release catch : in the direction of the

arrow and at the same time remove mechan-

ical key ; from the SmartKey.

For further information about:

Unlocking the driver's door (Y page 73)

Unlocking the cargo compartment

(Y page 75)

Locking the vehicle (Y page 73)

Inserting the mechanical key

Push mechanical key ; completely into the

SmartKey until it engages and release

catch : is back in its basic position.

SmartKey battery

Important safety notes

WARNING

Batteries contain toxic and corrosive substan-

ces. If batteries are swallowed, it can result in

severe health problems. There is a risk of fatal

injury.

SmartKey

Opening and closing

Keep batteries out of the reach of children. If

a battery is swallowed, seek medical attention

immediately.

The SmartKey batteries contain perchlorate

material, which may require special handling

and regard for the environment. National guide-

lines must be observed during disposal. In Cal-

ifornia, see

HazardousWaste/Perchlorate/.

Mercedes-Benz recommends that you have the

battery replaced at a qualified specialist work-

shop.

Checking the battery

Press the & or % button.

The battery is working properly if battery

check lamp : lights up briefly.

The battery is discharged if battery check

lamp : does not light up briefly.

Change the battery (Y page 69).

i If the SmartKey battery is checked within

the signal reception range of the vehicle,

pressing the & or % button:

locks or

unlocks the vehicle

You can get a battery at any qualified spe-

cialist workshop.

Replacing the battery

You require a CR 2025 3 V cell battery.

Take the mechanical key out of the SmartKey

(Y page 68).

Press mechanical key ; into the opening in

the SmartKey in the direction of the arrow

until battery tray cover : opens. When doing

so, do not hold cover : shut.

Remove battery tray cover :.

Repeatedly tap the SmartKey against your

palm until battery = falls out.

Insert the new battery with the positive ter-

minal facing upwards. Use a lint-free cloth to

do so.

Make sure that the surface of the battery is

free of lint, grease and other contaminants.

Insert the front tabs of battery tray cover :

and then press to close it.

Insert mechanical key into the SmartKey

(Y page 68).

Check the function of all SmartKey buttons on

the vehicle.

SmartKey

Opening and closing

Problems with the SmartKey

Problem

Possible causes/consequences and MM Solutions

You cannot lock or

unlock the vehicle using

the SmartKey.

The SmartKey battery is discharged or nearly discharged.

Vehicles without KEYLESS-GO: try again to lock or unlock the

vehicle using the remote control function of the SmartKey. Point the

tip of the SmartKey at the driver's door handle from close range and

press the % or & button.

Check the SmartKey battery (Y page 69) and replace it if necessary

(Y page 69).

If this does not work:

Unlock (Y page 73) or lock (Y page 73) the vehicle using the

mechanical key.

There is interference from a powerful source of radio waves.

Vehicles without KEYLESS-GO: try again to lock or unlock the

vehicle using the remote control function of the SmartKey. Point the

tip of the SmartKey at the driver's door handle from close range and

press the % or & button.

If this does not work:

Unlock (Y page 73) or lock (Y page 73) the vehicle using the

mechanical key.

The SmartKey is faulty.

Unlock (Y page 73) or lock (Y page 73) the vehicle using the

mechanical key.

Have the SmartKey checked at a qualified specialist workshop.

You can no longer lock or

unlock the vehicle using

KEYLESS-GO.

The SmartKey battery is discharged or nearly discharged.

Check the SmartKey battery (Y page 69) and replace it if necessary

(Y page 69).

If this does not work:

Unlock (Y page 73) or lock (Y page 73) the vehicle using the

mechanical key.

There is interference from a powerful source of radio waves.

Unlock (Y page 73) or lock (Y page 73) the vehicle using the

mechanical key.

SmartKey

Opening and closing

Problem

Possible causes/consequences and MM Solutions

KEYLESS-GO is malfunctioning.

Lock/unlock the vehicle using the remote control function of the

SmartKey.

Have the vehicle and SmartKey checked at a qualified specialist

workshop.

If the vehicle can also not be locked/unlocked using the remote con-

trol function:

Unlock (Y page 73) or lock (Y page 73) the vehicle using the

mechanical key.

Have the vehicle and SmartKey checked at a qualified specialist

workshop.

The drive system cannot

be started using the

SmartKey.

The on-board voltage is too low.

Switch off non-essential consumers, e.g. seat heating or interior

lighting, and try to start the drive system again.

If this does not work:

Check the 12 V battery and charge it if necessary (Y page 248).

Check the high-voltage battery and charge it if necessary

(Y page 118).

Jump-start the vehicle (Y page 249).

Consult a qualified specialist workshop.

The drive system cannot

be started using the

Start/Stop button. The

SmartKey is in the vehi-

cle.

The vehicle is locked.

Unlock the vehicle and try to start the vehicle again.

The SmartKey battery is discharged or nearly discharged.

Check the SmartKey battery (Y page 69) and replace it if necessary

(Y page 69).

If this does not work:

Start your vehicle with the SmartKey in the ignition lock.

There is interference from a powerful source of radio waves.

Start your vehicle with the SmartKey in the ignition lock.

You have lost a Smart-

Key.

Have the SmartKey deactivated at a qualified specialist workshop.

Report the loss immediately to the vehicle insurers.

If necessary, have the locks changed as well.

You have lost the

mechanical key.

Report the loss immediately to the vehicle insurers.

If necessary, have the locks changed as well.

SmartKey

Opening and closing

Opening and closing -> SmartKey for Your Mercedes B Class SUV Second Generation (2011-2017)

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