Get Opening and closing -> Key Guide for Mercedes G Class SUV Fifth Generation (2025-2026)

162

Key

Overview of key functions

WARNING

Accident– and risk of injury with unsupervised children in the

vehicle

IF YOU LEAVE CHILDREN UNATTENDED IN THE VEHICLE, THEY CAN

IN PARTICULAR

Open doors and thereby endanger other persons or road users.

get out of the car and are hit by traffic.

Operate vehicle equipment and become trapped, forexample.

IN ADDITION, THE CHILDREN COULD ALSO SET THE VEHICLE IN

MOTION, FOR EXAMPLEBY:

releasing the parking brake.

change the gearbox setting.

start the vehicle.

Never leave children unattended in the vehicle.

When leaving the vehicle, always take the SmartKey with you

and lock the vehicle.

Keep the key out of reach of children.

NOTE

Damage to the key caused by magnetic fields

Keep the key away from strong magnetic fields.

Vehicle key

1 Locking

2 Indicator lamp

3 Unlocking

If indicator lamp 2 does not light up after pressing the Ü or

ß button, the battery is weak or possibly discharged. Replace

the battery as soon as possible.

Replace the key battery (/page165).

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THE KEY LOCKS AND UNLOCKS THE FOLLOWING COMPONENTS:

Doors

Socket flap

Rear-end door

Designbox

If the vehicle is not opened within approximately 40seconds after unlocking,

the vehicle is locked 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.

Do not keep the key in the temperature-controlled cup holder. Otherwise, the

key will not be reliably detected.

Activating/deactivating the acoustic locking

verification signal

Multimedia system:

Settings

Vehicle

Open/close

Switch the Acoustic lock on or off.

Please note:

The selected setting for the acoustic locking verification signal

must comply with the relevant national road traffic rules. In

some countries, including Germany, using the acoustic locking

verification signal is prohibited 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 regulations. In countries where the use of this function is

prohibited, this function is not activated in the vehicle and must

not be activated.

Changing the unlocking settings

POSSIBLE UNLOCKING FUNCTIONS OF THE KEY:

Central unlocking

Unlocking the driver's door and socket flap

To switch between settings: press the buttons Ü and ß simulta‐

neously for approximately six seconds until the indicator lamp flashes

twice.

OPTIONS IF THE UNLOCKING FUNCTION FOR THE DRIVER'S DOOR AND

SOCKET FLAP HAS BEEN SELECTED:

To unlock the vehicle centrally: press the button Ü twice.

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 the socket flap are

unlocked.

Deactivating the key function

Vehicles with KEYLESS-GO: if you deactivate the key function, the KEYLESS-

GO functions are also deactivated. Access or drive authorisation via KEYLESS-

GO is then no longer possible with that key. Activate the function of the key so

that all functions using the key are available once again.

You can also deactivate the key's function to reduce the key's energy con‐

sumption if you do not use the vehicle or a key for an extended period of time.

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Press and hold the key button ß.

With the button ß pressed, immediately press the key button Ü

twice in quick succession.

The indicator lamp of the key lights up once briefly, and then again for

longer.

YOU HAVE THE FOLLOWING OPTIONS TO REACTIVATE THE

KEY:

Press any button on the key.

Start the vehicle with the key in the centre console storage

compartment (/page263).

Removing/inserting the emergency key

REMOVING THE EMERGENCY KEY

Press the release knob 1.

The emergency key 2 is pushed out slightly.

Pull out the emergency key 2 until it engages in the intermediate posi‐

tion.

Depending on the vehicle's equipment, the intermediate position

may not be available.

Press the release knob 1 again and fully remove the emergency key 2.

INSERTING THE EMERGENCY KEY

Press the release knob 1.

Insert the emergency key 2 to the intermediate position, or fully until it

engages.

You can use the emergency key 2 to attach the key to a key

ring.

Depending on the respective configuration, it is possible to

engage the emergency key

2 in the intermediate position.

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Replacing the key battery

DANGER

Risk of fatal injury due to swallowing batteries

Batteries contain toxic and corrosive substances. If batteries are swal‐

lowed or otherwise enter the body, severe internal burns can occur

within two hours.

There is a risk of fatal injury!

Keep the batteries out of the reach of children.

If the lid and/or the battery compartment do not close

securely, stop using the key and keep it away from children.

If batteries are swallowed or otherwise enter the body, seek

immediate medical attention.

ENVIRONMENTAL NOTE

Environmental damage due to improper disposal of batteries

Batteries contain pollutants. It is illegal to dispose of them with the

household rubbish.

Dispose of batteries in an environmentally responsible

manner. Take discharged batteries to a qualified specialist

workshop or to a collection point for used batteries.

Requirements:

You need a CR2032 lithium cell battery (3 V).

Mercedes-Benz recommends that you have the battery replaced at a qualified

specialist workshop.

Remove the emergency key (/page164).

Press the release knob 2 down fully and slide the cover 1 in the

direction of the arrow.

Fold out the cover 1 in the direction of the arrow and remove.

Remove the battery compartment 3 and take out the discharged bat‐

tery.

Insert the new battery into the battery compartment 3. Observe the

positive terminal marking in the battery compartment and on the battery.

Push in the battery compartment 3.

Re-attach the cover 1 and push in until it

engages.

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Troubleshooting problems with the key

YOU CAN NO LONGER LOCK OR UNLOCK THE VEHICLE

POSSIBLE CAUSES:

The key battery is at low capacity or is flat.

Check the battery via the indicator lamp (/page162).

Replace the key battery as necessary (/page165).

Use the replacement key.

Use the emergency key to lock or unlock (/page169).

Have the key checked at a qualified specialist workshop.

THERE IS INTERFERENCE FROM A POWERFUL RADIO SIGNAL SOURCE.

POSSIBLE CAUSES IF THE FUNCTION OF THE KEY IS IMPAIRED:

high-voltage power lines

mobile phones

electronic devices (notebooks, tablets)

shielding due to metallic objects or induction loops for electrical gate

systems or automatic barriers

Ensure that there is sufficient distance between the key and the poten‐

tial source of interference.

YOU HAVE LOST A KEY

Have the key deactivated at a qualified specialist workshop.

If necessary, have the mechanical lock replaced as well.

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Opening and closing -> Key for Your Mercedes G Class SUV Fifth Generation (2025-2026)

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