2016 MERCEDES-BENZ GL-Class key battery

Problems with the SmartKey
ProblemPossible causes/consequences andMSolutions
You cannot lock or
unlock the vehicle
using the SmartKey.The SmartKey battery is discharged or nearly discharged.
XTry 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 %or
& button.
If this does not work:
XCheck the SmartKey battery (Ypage 85) and replace it if nec-
essary (
Ypage 85).
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
The SmartKey is faulty.
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
XHave 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.
XLock/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.
KEYLESS-GO is malfunctioning.
XLock/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.
XHave KEYLESS-GO checked at a qualified specialist workshop.
If this does not work:
XCheck the SmartKey battery (Ypage 85) and replace it if nec-
essary (
Ypage 85).
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist work-
shop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
SmartKey87
Opening and closing
Z

ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the
SmartKey.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary
(
Ypage 394).
or
XJump-start the vehicle (Ypage 395).
or
XConsult 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.
XClose the door and try to start the vehicle again.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
ProblemPossible causes/consequences and MSolutions
You cannot lock or
unlock the vehicle
using the SmartKey.The SmartKey battery is discharged or nearly discharged.
XVehicles 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 %or
& button.
If this does not work:
XCheck the SmartKey battery and replace it if necessary
(
Ypage 85).
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
The SmartKey is faulty.
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
XHave the SmartKey checked at a qualified specialist workshop.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO.KEYLESS-GO was deactivated.
XReactivate KEYLESS-GO (Ypage 83).
88SmartKey
Opening and closing

ProblemPossible causes/consequences andMSolutions
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 85) and replace it if nec-
essary (
Ypage 85).
If this does not work:
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of
the SmartKey.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function:
XUnlock (Ypage 92) or lock (Ypage 92) the vehicle using the
mechanical key.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist work-
shop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
The engine cannot be
started using the
SmartKey.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary
(
Ypage 394).
or
XJump-start the vehicle (Ypage 395).
or
XConsult a qualified specialist workshop.
SmartKey89
Opening and closing
Z

ProblemPossible causes/consequences andMSolutions
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.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 85) and replace it if nec-
essary (
Ypage 85).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart 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.
GWARNING
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.
GWARNING
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 (
Ypage 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
(
Ypage 67).
If the vehicle has previously been locked from
the outside, opening a door from the inside
90Doors
Opening and closing

Therefore, do not switch the seat heating on
repeatedly.
Driver's and front-passenger seat
Rear seats
The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches down
from level3to level 2after approximately
eight minutes.
The system automatically switches down
from level 2to level 1after approximately ten
minutes.
The system automatically switches off
approximately 35 minutes after it is set to
level 1.
XTurn the SmartKey to position 1or 2in the
ignition lock (
Ypage 165).
XTo switch on: press button:repeatedly
until the desired heating level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
heating may switch off.
Seats119
Seats, steering wheel and mirrors
Z

Problems with the seat heating
ProblemPossible causes/consequences andMSolutions
The seat heating has
switched off prema-
turely or cannot be
switched on.The on-board voltage is too low because too many electrical con-
sumers are switched on.
XSwitch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating will
switch back on automatically.
Switching the seat ventilation on/off
Switching on/off
The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 165).
XTo switch on: press button:repeatedly
until the desired ventilation level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
ventilation may switch off.
iYou can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (
Ypage 99). The seat ven-
tilation of the driver's seat automatically
switches to the highest level.
120Seats
Seats, steering wheel and mirrors

Problems with the seat ventilation
ProblemPossible causes/consequences andMSolutions
The seat ventilation has
switched off prema-
turely or cannot be
switched on.The on-board voltage is too low because too many electrical con-
sumers are switched on.
XSwitch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat ventilation will
switch back on automatically.
Steering wheel
Important safety notes
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel man-
ually
GWARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is a risk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
:Release lever
;To adjust the steering wheel height
=To adjust the steering wheel position
(fore-and-aft adjustment)
XPush release lever :down completely.
The steering column is unlocked.
XAdjust the steering wheel to the desired
position.
XPush release lever :up completely.
The steering column is locked.
XCheck if the steering column is locked.
When doing so, try to push the steering
wheel up or down or try to move it in the
fore-and-aft direction.
Steering wheel121
Seats, steering wheel and mirrors
Z

The indicator lamp goes out again after
some time. You can adjust the selected
mirror using adjustment button=as long
as the indicator lamp is lit.
XPress adjustment button =up, down, or to
the left or right until you have adjusted the
exterior mirror to the correct position. You
should have a good overview of traffic con-
ditions.
The convex exterior mirrors provide a larger
field of vision.
The exterior mirrors are heated automatically
if the rear window defroster is switched on
and the outside temperature is low.
Folding the exterior mirrors in or out
electrically
XTurn the SmartKey to position 1or 2in the
ignition lock (
Ypage 165).
XBriefly press button :.
Both exterior mirrors fold in or out.
iMake sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
iIf you are driving faster than 30 mph
(47 km/h) , you can no longer fold in the
exterior mirrors.
Setting the exterior mirrors
If the battery has been disconnected or com-
pletely discharged, the exterior mirrors must
be reset. The exterior mirrors will otherwise
not fold in when you select the "Fold in mir- rors when locking" function in the on-board
computer (
Ypage 286).
XTurn the SmartKey to position
1in the igni-
tion lock (
Ypage 165).
XBriefly press button :.
Folding the exterior mirrors in or out
automatically
If the "Fold in mirrors when locking" function
is activated in the on-board computer:
(
Ypage 286)
Rthe exterior mirrors fold in automatically as
soon as you lock the vehicle from the out-
side.
Rthe exterior mirrors fold out again automat-
ically as soon as you unlock the vehicle and
then open the driver's or front-passenger
door.
Exterior mirror pushed out of position
If an exterior mirror has been pushed out of
position, proceed as follows:
XVehicles without electrically folding
exterior mirrors:move the exterior mirror
into the correct position manually.
XVehicles with electrically folding exte-
rior mirrors: press and hold button for mir-
ror folding :until you hear a click and the
mirror engages audibly in position.
The mirror housing is engaged again and
you can adjust the exterior mirrors as usual
(
Ypage 124).
Automatic anti-glare mirrors
GWARNING
Electrolyte may escape if the glass in an auto-
matic anti-glare mirror breaks. The electrolyte
is harmful and causes irritation. It must not
come into contact with your skin, eyes, res-
piratory organs or clothing or be swallowed.
There is a risk of injury.
Mirrors125
Seats, steering wheel and mirrors
Z