lock MERCEDES-BENZ GL 2016 Owner's Guide

If you do not open the vehicle within
approximately 40 seconds of unlocking: R
the vehicle is locked again. R
protection against theft is reactivated. X
To lock centrally: press button C .
The SmartKey centrally locks and unlocks the
following components: R
the doors R
the tailgate R
the fuel filler flap
The turn signals flash once when unlocking
and three times when locking.
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 285).
You will receive visual and acoustic locking
confirmation if all components were able to
be locked.
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer ( Y
page 284).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a KEY-
LESS-GO key in the vehicle.
Locking/unlocking centrally
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
functions of KEYLESS-GO with those of a con-
ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the 7 button on the SmartKey.
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). KEYLESS-GO checks whether a valid Smart-
Key is in the vehicle by periodically establish-
ing a radio connection between the vehicle
and the SmartKey. This happens: R
when the external door handles are
touched R
when starting the engine R
while the vehicle is in motion
X
To unlock the vehicle: touch the inner
surface of the door handle. X
To lock the vehicle: touch sensor sur-
face C . X
Convenience closing feature: touch
recessed sensor surface D for an exten-
ded period.
Further information on the convenience clos-
ing feature ( Y
page 99).
If you pull on the handle of the tailgate, only
the cargo compartment of the vehicle is
unlocked.
Deactivating and activating
If you do not intend to use a key for an exten-
ded period of time, you can deactivate the
KEYLESS-GO function of the SmartKey. The
SmartKey will then use very little power,
thereby conserving battery power. For the
purposes of activation/deactivation, the
vehicle must not be nearby. SmartKey 83
Opening and closing Z

X
To deactivate: press the 7 button on
the SmartKey twice in rapid succession.
The battery check lamp ( Y
page 85) of the
SmartKey flashes twice briefly and lights up
once, then KEYLESS-GO is deactivated. X
To activate: press any button on the
SmartKey or insert the SmartKey into the
ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again.
KEYLESS-GO start functionBear in mind that the engine can be started by
any of the vehicle occupants if there is a
SmartKey in the vehicle.
Changing the settings of the locking
systemYou can change the settings of the locking
system. This means that only the driver's door
and the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel on your own. X
To change the setting: press and hold
down the 6 and 7 buttons simulta-
neously for approximately six seconds until
the battery check lamp flashes twice
( Y
page 85).
i If the setting of the locking system is
changed within the signal range of the vehi-
cle, pressing the 7 or 6 button:R
locks or R
unlocks the vehicle
The SmartKey now functions as follows: X
To unlock the driver's door: press the
6 button once.X
To unlock centrally: press the 6 but-
ton twice. X
To lock centrally: press the 7 button. The KEYLESS-GO function is changed as fol-
lows: X
To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door. X
To unlock centrally: touch the inner sur-
face of the door handle on the front-
passenger door or the rear door. X
To lock centrally: touch the outer sensor
surface on one of the door handles
( Y
page 83). X
To restore the factory settings: press
and hold down the 6 a nd 7 b uttons
simultaneously for approximately six sec-
onds until the battery check lamp flashes
twice ( Y
page 85).
Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey, use the
mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered ( Y
page 78).
There are several ways to turn off the alarm: X
To turn the alarm off with the SmartKey:
press the 6 or 7 button on the
SmartKey.
or X
Insert the SmartKey into the ignition lock.
or X
To deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the igni-
tion lock. The SmartKey must be in the
vehicle.
or X
Lock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle.84
SmartKey
Opening and closing

If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked
automatically. X
To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch C in the direction of
the arrow and at the same time remove
mechanical key D from the SmartKey.
For further information about: R
unlocking the driver's door ( Y
page 92)R
unlocking the cargo compartment
( Y
page 97) R
locking the vehicle ( Y
page 92)
Inserting the mechanical key X
Push mechanical key D completely into
the SmartKey until it engages and release
catch C is back in its basic position.
SmartKey battery
Important safety notes
G 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.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately. Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist
workshop.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/Hazard-
ousWaste/Perchlorate/index.cfm.
Checking the battery X
Press the 7 or 6 button.
The battery is working properly if battery
check lamp C lights up briefly.
The battery is discharged if battery check
lamp C does not light up briefly. X
Change the battery ( Y
page 85).
i If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the 7 or 6 button:R
locks or R
unlocks the vehicle
i You can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery. X
Take the mechanical key out of the Smart-
Key ( Y
page 84).SmartKey 85
Opening and closing Z

Problems with the SmartKey Problem
Possible causes/consequences and P Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged. X
Try again to lock/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 6 or
7 button.
If this does not work: X
Check the SmartKey battery ( Y
page 85) and replace it if nec-
essary ( Y
page 85). X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key.
The SmartKey is faulty. X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key. X
Have the SmartKey checked at a qualified specialist workshop.
You can no longer
lock/unlock the vehi-
cle using KEYLESS-GO. There is interference from a powerful source of radio waves. X
Lock/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 6 or 7 button.
KEYLESS-GO is malfunctioning. X
Lock/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 6 or 7 button.X
Have KEYLESS-GO checked at a qualified specialist workshop.
If this does not work: X
Check the SmartKey battery ( Y
page 85) and replace it if nec-
essary ( Y
page 85). X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key.
You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist work-
shop. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well. SmartKey 87
Opening and closing Z

Problem
Possible causes/consequences and P Solutions
The engine cannot be
started using the
SmartKey. The on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X
Check the starter battery and charge it if necessary
( Y
page 394).
or X
Jump-start the vehicle ( Y
page 395).
or X
Consult a qualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle. A door is open. Therefore, the SmartKey cannot be detected as
easily. X
Close the door and try to start the vehicle again.
There is interference from a powerful source of radio waves. X
Start your vehicle with the SmartKey in the ignition lock.
Problem
Possible causes/consequences and P Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged. X
Vehicles without KEYLESS-GO or KEYLESS-GO start func-
tion: try again to lock/unlock the vehicle using the remote con-
trol function of the SmartKey. Point the tip of the SmartKey at
the driver's door handle from close range and press the 6 or
7 button.
If this does not work: X
Check the SmartKey battery and replace it if necessary
( Y
page 85). X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key.
The SmartKey is faulty. X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key. X
Have the SmartKey checked at a qualified specialist workshop.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO. KEYLESS-GO was deactivated. X
Reactivate KEYLESS-GO ( Y
page 83).88
SmartKey
Opening and closing

Problem
Possible causes/consequences and P Solutions
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 85) and replace it if nec-
essary ( Y
page 85).
If this does not work: X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves. X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning. X
Lock/unlock the vehicle using the remote control function of
the SmartKey. X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function: X
Unlock ( Y
page 92) or lock ( Y
page 92) the vehicle using the
mechanical key. X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist work-
shop. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
The engine cannot be
started using the
SmartKey. The on-board voltage is too low. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X
Check the starter battery and charge it if necessary
( Y
page 394).
or X
Jump-start the vehicle ( Y
page 395).
or X
Consult a qualified specialist workshop. SmartKey 89
Opening and closing Z

Problem
Possible causes/consequences and P Solutions
Vehicles with KEY-
LESS-GO or the KEY-
LESS-GO start func-
tion: the engine cannot
be started using the
Start/Stop button. The
SmartKey is in the vehi-
cle. The vehicle is locked. X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 85) and replace it if nec-
essary ( Y
page 85).
If this does not work: X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves. X
Start your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
G WARNING
If children are left unsupervised in the vehicle,
they could: R
open the doors, thus endangering other
people or road users. R
get out and disrupt traffic. R
operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they: R
release the parking brake. R
shifting the automatic transmission out of
park position PR
Start the engine.
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.
G WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even fatal. Never leave children unattended in the
vehicle.
G WARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
You should preferably place luggage or loads
in the cargo compartment. Observe the load-
ing guidelines ( Y
page 340).
Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked. You can only open
the rear doors from inside the vehicle if they
are not secured by the child-proof locks
( Y
page 67).
If the vehicle has previously been locked from
the outside, opening a door from the inside90
Doors
Opening and closing

will trigger the anti-theft alarm system.
Switch off the alarm ( Y
page 78).X
Front door: pull door handle D .
If the door is locked, locking knob C pops
up. The door is unlocked and can be
opened. X
Rear door: pull door handle D .
If the door is locked, locking knob C pops
up and the door unlocks. X
Pull door handle D again.
The door can be opened.
Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside. The buttons are located on
both front doors.
X
To unlock: press button C .X
To lock: press button D .
If the front-passenger door is closed, the
vehicle locks. Meanwhile, the fuel filler flap will not be
locked or unlocked.
You cannot unlock the vehicle centrally from
the inside if the vehicle has been locked from
the outside.
You can open a front door from inside the
vehicle even if it has been locked.
If a locked door is opened from the inside, the
previous unlock status of the vehicle will be
taken into consideration if: R
the vehicle was locked using the locking
button for the central locking, or R
if the vehicle was locked automatically
The vehicle will be fully unlocked if it had pre-
viously been fully unlocked. If only the driver's
door had been previously unlocked, only the
door which has been opened from the inside
is unlocked.
Automatic locking feature
X
To deactivate: press and hold button C
for about five seconds until a tone sounds. X
To activate: press and hold button D for
about five seconds until a tone sounds.
i If you press one of the two buttons and do
not hear a tone, the relevant setting has
already been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning. Doors 91
Opening and closing Z

You could therefore be locked out if: R
the vehicle is being pushed. R
the vehicle is being towed. R
the vehicle is on a roller dynamometer.
You can also switch the automatic locking
function on and off using the on-board com-
puter ( Y
page 285).
Power closingPower closing pulls the doors and trunk lid
into their locks automatically even if they are
only partly closed. X
To power close a door: push the door into
the lock up to the first detent position.
Power closing will pull the door fully closed. X
To power close the tailgate: lightly press
the tailgate downwards.
Power closing will pull the tailgate fully
closed.
Unlocking the driver's door (mechan-
ical key)
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, the anti-theft alarm
system will be triggered ( Y
page 78).X
Take the mechanical key out of the Smart-
Key ( Y
page 85).X
Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key counter-clockwise
to position G .
The door is unlocked. X
Turn the mechanical key back and remove
it. X
Insert the mechanical key into the Smart-
Key.
Locking the vehicle (mechanical key) If the vehicle can no longer be locked with the
SmartKey, use the mechanical key. X
Open the driver's door. X
Close the front-passenger door, the rear
doors and the tailgate. X
Press the locking button ( Y
page 91).X
Check whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs by hand, if necessary. X
Close the driver's door. X
Take the mechanical key out of the Smart-
Key ( Y
page 85). X
Insert the mechanical key into the lock of
the driver's door as far as it will go.92
Doors
Opening and closing

X
Turn the mechanical key clockwise as far as
it will go to position G .X
Turn the mechanical key back and remove
it. X
Make sure that the doors and the tailgate
are locked. X
Insert the mechanical key into the Smart-
Key.
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed.
Cargo compartment
Important safety notes
G WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
G WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate
is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open. G WARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
! The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
i Tailgate opening dimensions
( Y
page 454).
You should preferably place luggage or loads
in the cargo compartment. Observe the load-
ing guidelines ( Y
page 340).
Do not leave the SmartKey in the cargo com-
partment. You could otherwise lock yourself
out.
You can: R
close the tailgate manually from outside R
open and close the tailgate automatically
from outside R
open and close the tailgate automatically
from inside R
limit the opening angle of the tailgate R
unlock the tailgate from inside with the
emergency release
Tailgate reversing feature
On vehicles with tailgate remote closing fea-
ture, the tailgate is equipped with automatic
obstacle recognition with a reversing feature.
If a solid object blocks or restricts the tailgate
when automatically opening or closing, this
procedure is stopped. If the tailgate is stop-
ped during the closing procedure, it will open
again automatically. The automatic obstacleCargo compartment 93
Opening and closing Z