2018 MERCEDES-BENZ GLC wheel

restraint supports the back of the head at
about eye level.
General notes Pay attention to the important safety notes
( Y
page 99).
Do not rotate the head restraints of the front and
rear seats. Otherwise, you cannot adjust the
height and angle of the head restraints to the
correct position.
Adjusting the head restraint height
manually
X
To raise: pull the head restraint up to the
desired position. X
To lower: press release catch C in the direc-
tion of the arrow and push the head restraint
down to the desired position.
Adjusting the head restraint fore-and-
aft position manually
With this function you can adjust the distance
between the head restraint and the back of the
seat occupant's head. X
To move forward: pull the head restraint
forward in the direction of the arrow until it
engages in the desired position. X
To move back: press and hold the release
catch C . X
Push the head restraint back. X
Release the release button once the head
restraint is in the desired position. X
Ensure that the head restraint has engaged
properly.
Using the fore-and-aft adjustment, adjust the
head restraint so that it is as close as possible to
your head.
Adjusting the height of the head
restraints electrically X
To adjust the head restraint height: slide
the switch for the head restraint adjustment
( Y
page 101) up or down in the direction of the
arrow.
Adjusting the rear seat head restraint
height
X
Once the head restraint is fully lowered, press
release catch C . X
To raise: pull the head restraint up to the
desired height. X
To lower: press release catch C and push
the head restraint down until it is in the
desired position.102
Seats
Seats, steering wheel and mirrors

X
Turn the SmartKey to position G or H in the
ignition lock ( Y
page 136).X
To switch on: press button C repeatedly
until the desired heating level is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
i If drive program E is selected, the power of
the seat heating is reduced.
Switching the seat ventilation on/off
Switching on/off The blue indicator lamps in the button indicate
the blower setting you have selected. X
Turn the SmartKey to position G or H in the
ignition lock ( Y
page 136). X
To switch on: press button C repeatedly
until the desired blower setting is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the slid-
ing sunroof using the "Convenience opening"
feature ( Y
page 92). The seat ventilation of
the driver's seat automatically switches to the
highest level.
i When the vehicle is stationary, the fan
speed can be reduced automatically. This
reduces the noises of the seat ventilation.
Problems with the seat heating / seat ventilation Problem
Possible causes/consequences and P Solutions
The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on. X
Switch 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 or seat
ventilation can be switched back on manually.104
Seats
Seats, steering wheel and mirrors

Steering wheel
Important safety notes
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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.
G WARNING
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 key in the igni-
tion lock.
Adjusting the steering wheel man-
ually
C
Release lever
D
Adjusts the steering wheel height

i The steering wheel only moves up if it has
not already reached the upper steering lim-
iter.
Position of the steering wheel for driv-
ing The steering wheel is moved to the last selected
position when: R
the driver's door is closed and you insert the
SmartKey into the ignition lock R
you close the driver's door when the ignition
is switched on R
you press the Start/Stop button once in vehi-
cles with KEYLESS-GO or the KEYLESS-GO
start function
i The steering wheel only returns to the last
set position if the driving position is stored
after the seat or steering column has been
adjusted ( Y
page 110).
The most recent driving position of the steering
wheel is stored if: R
the ignition is switched off R
the setting is stored using the memory func-
tion ( Y
page 110)
Crash-responsive EASY-EXIT feature If the crash-responsive EASY-EXIT feature is trig-
gered in an accident, the steering column will
move up when the driver's door is opened or the
SmartKey is removed from the ignition lock. This
makes it easier to exit the vehicle and rescue the
occupants.
The crash-responsive EASY-EXIT feature is
operational only if the EASY-EXIT/ENTRY fea-
ture is activated in the multimedia system (see
Digital Operator's Manual). Mirrors
Exterior mirrors
Important safety notes
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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.
G WARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder.
Adjusting the exterior mirrors
X
Turn the SmartKey to position G or H in the
ignition lock ( Y
page 136). X
Exterior mirror on the front-passenger side:
press button D .Mirrors 107
Seats, steering wheel and mirrors Z

piratory organs or clothing or be swallowed.
There is a risk of injury.
If you come into contact with the electrolyte,
observe the following: R
Rinse off the electrolyte from your skin
immediately with water. R
Immediately rinse the electrolyte out of
your eyes thoroughly with clean water. R
If the electrolyte is swallowed, immediately
rinse your mouth out thoroughly. Do not
induce vomiting. R
If electrolyte comes into contact with your
skin or hair or is swallowed, seek medical
attention immediately. R
Immediately change out of clothing which
has come into contact with electrolyte. R
If an allergic reaction occurs, seek medical
attention immediately.
The exterior mirror on the driver's side and the
rear-view mirror automatically go into anti-glare
mode if: R
the ignition is switched on R
incident light from headlamps strikes the sen-
sor in the rear-view mirror
The mirrors do not go into anti-glare mode if
reverse gear is engaged or if the interior lighting
is switched on.
Parking position for the exterior mir-
ror on the front-passenger side
Storing the parking position You can set the front-passenger side exterior
mirror such that you can see the rear wheel on
that side as soon as you engage reverse gear.
You can store this position. Storing using reverse gear
C
Memory button MD
Button for the exterior mirror setting

R
Seat R
Steering wheel R
Exterior mirrors R
Head-up display
i If you release the memory position switch,
the seat, steering wheel and mirror setting
functions stop immediately. The head-up dis-
play continues to be adjusted.
Memory function 111
Seats, steering wheel and mirrors Z

High-beam headlamps X
Switch off the lights. X
Open the hood. X
Turn housing cover C counter-clockwise and
remove it. X
Push bulb holder D upwards and pull out.X
Pull defective bulb out of bulb holder D .X
Insert new bulb into bulb holder D .X
Insert bulb holder D into groove with lug at
top. X
Push bulb holder D down until it engages
audibly. X
Press on housing cover C and turn it clock-
wise.
Turn signals
X
Remove the cover in the front wheel housing
( Y
page 118).X
Turn bulb holder C counter-clockwise using
the grip under the headlamp casing and
remove it downwards with bulb. X
Turn defective bulb counter-clockwise and
remove it from bulb holder C .X
Insert new bulb into bulb holder C . X
Insert bulb holder C , turn it clockwise and
lock. X
Replace the cover in the front wheel housing
( Y
page 118).
Removing and installing the cover in the
front wheel housing You must remove the cover of the front wheel
housing before you can change the front turn
signal lamp.
X
To remove: switch off the lights. X
Turn the front wheels inwards. X
Turn rotary knob C 180° outwards until it
stops using a suitable object.
Cover D is released. X
Fold cover D up. X
To install: insert cover D into the left, right
and two lower catches. X
Turn rotary knob C 180° inwards until it
stops using a suitable object.
Cover D is locked.118
Replacing bulbs
Lights and windshield wipers

G WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
G WARNING
If the parking brake has not been fully
released when driving, the parking brake can: R
overheat and cause a fire R
lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Do not warm up the engine while stationary.
Pull away immediately. Avoid high engine
speeds and full throttle until the engine has
reached its operating temperature.
In vehicles with automatic transmission,
engage positions P and R only when the vehi-
cle is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery roads.
You could otherwise damage the drive train.
! Mercedes-AMG vehicles: at low engine oil
temperatures below 68 ‡ (+20 †), the max-
imum engine speed is restricted in order to
protect the engine. To protect the engine and
maintain smooth engine operation, avoid driv-
ing at full throttle when the engine is cold.
Hybrid vehicles: be sure to observe the notes
in the Supplement. Otherwise, you may not rec-
ognize dangers. Key positions
SmartKey
Z
To remove the SmartKey G
Power supply for some consumers, such as
the windshield wipers H
Ignition (power supply for all consumers)
and drive position I
To start the engine
i The SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
Start/Stop button
General notes When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
Pressing the Start/Stop button several times in
succession corresponds to the different Smart-
Key positions in the ignition lock. This is only the
case if you are not depressing the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
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 engine.136
Driving
Driving and parking