2018 MERCEDES-BENZ GLC battery

X
Repeatedly tap th e SmartKey against your
palm until battery

Problem
Possible causes/consequences and P Solutions
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 con-
trol function: X
Lock or unlock the vehicle using the mechanical key ( Y
page 85).X
Have the vehicle and SmartKey checked at a qualified specialist
workshop.
The engine cannot be
started using the Smart-
Key. 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 340).
or X
Jump-start the vehicle ( Y
page 341).
or X
Consult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle. 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 81) and replace it if necessary
( Y
page 81).
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.
You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist workshop. 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 83
Opening and closing Z

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

When the engine is running and the vehicle is
stationary: if you move the selector lever from a
driving position to ] , the daytime driving lights
and low-beam headlamps go out after three
minutes.
When the engine is running, the vehicle is sta-
tionary and in bright ambient light: if you turn the
light switch to the ` position, the daytime
running lamps and parking lamps switch on.
If the engine is running and you turn the light
switch to the X position, the manual settings
take precedence over the daytime running
lamps.
Low-beam headlamps
G WARNING
When the light switch is set to X , the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
X .
Even if the light sensor does not detect that it is
dark, the parking lamps and low-beam head-
lamps switch on when the ignition is switched on
and the light switch is set to the X position.
This is a particularly useful function in the event
of rain and fog. X
To switch on the low-beam headlamps:
turn the SmartKey to position H in the igni-
tion lock or start the engine. X
Turn the light switch to the X position.
The green X indicator lamp in the instru-
ment cluster lights up.
Rear fog lamp
The rear fog lamp improves visibility of your
vehicle for the traffic behind in the event of thick
fog. You must observe the legal requirements
for the country in which you are currently driving
when operating the rear fog lamp. X
To switch on the rear fog lamp: turn the
SmartKey in the ignition lock to position H or
start the engine. X
Turn the light switch to the X or X
position. X
Press the ^ button.
The yellow ^ indicator lamp on the instru-
ment cluster lights up.
Parking lamps
! If the battery charge is very low, the parking
lamps or standing lamps are automatically
switched off to enable the next engine start.
Always park your vehicle safely and in a well lit
area, in accordance with the relevant legal
stipulations. Avoid using the ` parking
lamps over a period of several hours. If pos-
sible, switch on the right-hand d or left-
hand c standing lamps. X
To switch on the parking lamps: turn the
light switch to the ` position.
The green ` indicator lamp on the instru-
ment cluster lights up.
Standing lamps Switching on the standing lamps ensures the
corresponding side of the vehicle is illuminated. X
To switch on the parking lamp: turn the
SmartKey t o position Z in
the ignition lock or
remove the SmartKey. X
Turn the light switch to the c (left-hand
side of the vehicle) or d (right-hand side of
the vehicle) position.
Combination switch
C
High-beam headlamps
D
Turn signal, rightExterior lighting 113
Lights and windshield wipers Z

Activating/deactivating Dual-zone automatic climat e controlX
Press th e 0 rocke r switch up or down .
The indicator lamp abov e th e 0 rocke r
switch lights up or goe s out .
The synchronization function deactivates if th e
setting s for th e front-passenger side are
changed.
3-zone automatic climat e controlX
Activat e or deactivat e th e "Synchronization "
function usin g th e multimedia system
( Y
page 285).
The synchronization function is deactivated: R
if th e setting s for th e front-passenger side are
changed R
th e setting s for th e rear compartmen t are
changed
Defrosting the windshield
Gene ra l notesYou can use this function to defros t th e wind-
shield or to clear a fogged up windshield or fron t
side windows on th e inside.
Switc h off th e "Windshield defrosting " function
as soo n as th e windshield is clear again .
Switching the "Windshield def ros ting"
function on or offX
Turn th e SmartKey to position H in th e igni-
tion loc k ( Y
page 136).X
To switch on: press rocke r switch d on
th e fron t control uni t up or down .
The indicator lamp abov e th e d rocke r
switch lights up. The curren t climat e control
setting s are deactivated.
The climat e control system switches to th e
followin g functions:R
high airflow R
high temperature R
air distribution to th e windshield and fron t
side windows R
air-recirculation mod e off
i If necessary, th e "Cooling wit h air dehumid -
ification " function is activated. In this case, th e indicator lamp abov e th e Z rocke r
switch remain s switched off .X
To switch off : press rocke r switch d up or
down .
The indicator lamp abov e th e d rocke r
switch goes out . The previously selected set -
ting s are restored . Air-recirculation mod e
remain s deactivated.
Defrosting the windows
Windows fogged up on the inside X
Activat e th e "Cooling wit h air dehumidifica-
tion " function wit h th e Z rocke r switch .X
Switc h on automatic mod e usin g th e X
rocke r switch . X
If th e windows continu e to fog up, activat e th e
"Windshield defrosting " function usin g th e
d rocke r switch .
i You should only select this setting until th e
windshield is clear again .
Windows fogged up on the outside X
Activat e th e windshield wipers. X
Switc h on automatic mod e usin g th e X
rocke r switch .
i If you clean th e windows regularly, they do
no t fog up so quickly.
Rear wind ow def ros ter
Gene ra l notesThe rear window defroste r has a high curren t
draw . You should therefor e switch it off as soo n
as th e rear window is clear. Otherwise , th e rear
window defroste r switches off automatically
after several minutes.
If th e battery voltag e is to o low, th e rear window
defroste r may switch off .
Acti vating/deactivating X
Turn th e SmartKey to position H in th e igni-
tion loc k ( Y
page 136). X
Press rocke r switch l up or down .
The indicator lamp abov e rocke r switch l
lights up or goes out .130
Operating the climate control systems
Climate control

Problems with the rear window defroster Problem
Possible causes/consequences and P Solutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated. The battery has not been sufficiently charged. X
Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster
can be activated again.
Switching air-recirculation mode
on/off
General notes You can also temporarily deactivate the flow of
fresh air manually if unpleasant odors are enter-
ing the vehicle from outside. The air already
inside the vehicle will then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating/deactivating X
Turn the SmartKey to position H in the igni-
tion lock ( Y
page 136).X
To activate: press the r rocker switch up
or down.
The indicator lamp above the r rocker
switch lights up.
Air-recirculation mode switches on automati-
cally: R
at high outside temperatures R
at high levels of pollution (3-zone automatic
climate control only) R
in a tunnel (vehicles with a navigation system
only)
The indicator lamp above the r rocker
switch is not lit when automatic air-recirculation
mode is activated. Outside air is added after
about 30 minutes. X
To deactivate: press the r rocker switch
up or down.
The indicator lamp above the r rocker
switch goes out. Air-recirculation mode deactivates automati-
cally: R
after approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †) R
after approximately five minutes if cooling
with air dehumidification is deactivated R
after approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with dehumidification"
function is activated
Switching the residual heat on or off
General notes The residual heat function is only available with
3-zone automatic climate control.
Once the engine is switched off, it is possible to
make use of the residual heat of the engine to
continue heating or ventilating the front com-
partment of the vehicle for approximately
30 minutes. The heating or ventilation time
depends on the interior temperature that has
been set.
Activating/deactivating X
Turn the SmartKey to position

X
To deactivate: press the ! rocker switch
up or down.
The indicator lamp above the ! rocker
switch goes out.
Residual heat is deactivated automatically: R
after approximately 30 minutes R
when the ignition is switched on R
if the battery voltage drops
Perfume atomizer
Operating the perfume atomizer
G WARNING
If children open the vial, they could drink the
perfume or it could come into contact with
their eyes. There is a risk of injury. Therefore,
do not leave children unsupervised in the vehi-
cle.
If the perfume liquid has been drunk, consult
a doctor. If perfume comes into contact with
your eyes or skin, rinse the eyes with clean
water. If you continue to experience difficul-
ties, consult a doctor.
H Environmental note
Full vials must not be dis-
posed of with household
waste. They must be collec-
ted separately and recycled
to protect the environment.
Dispose of full vials in an
environmentally responsible
manner and take them to a
harmful substance collec-
tion point. C
Vial lid D
Vial
The perfume atomizer helps to improve driving
comfort.
Via the multimedia system you can: R
switch the perfume atomizer on/off
( Y
page 285) R
regulate the perfume intensity ( Y
page 285)
The following conditions can affect your percep-
tion of the perfume intensity: R
operating mode of automatic climate control R
interior temperature R
time of year or day R
air humidity R
physiological condition of occupants, e.g. fati-
gue or hunger
The perfume atomizer is active only when the
glove box is closed.
The perfume atomizer is provided with a pre-fil-
led vial. You can also choose from a variety of
pre-filled vials and an empty vial which you can
fill yourself.
If you refill an empty perfume vial, observe the
separate information sheet attached to the vial.
! If you do not use genuine Mercedes-Benz
interior perfumes, observe the safety notes
on the perfume packaging.
Do not refill the pre-filled vial when it is empty.
Dispose of the used vial after use. X
To insert the perfume vial: open the glove
box ( Y
page 291). X
Slide the perfume vial into the holder as far as
it will go. X
To remove the perfume vial: pull out the
perfume vial.132
Operating the climate control systems
Climate control

take the SmartKey with you when leaving the
vehicle, even if you only leave it for a short time.
Pay attention to the important safety notes. X
Depress the brake pedal and keep it
depressed. X
Press the Start/Stop button once
( Y
page 137).
The engine starts.
Starting procedure via smartphone Observe the important safety notes on starting
the engine ( Y
page 138).
You can also start your engine via your smart-
phone from outside the vehicle. In this case, the
previously selected climate control setting is
activated. In this way you can cool or heat the
interior of the vehicle before starting the jour-
ney.
Only start the engine via your smartphone if it is
safe to start and run the engine where your vehi-
cle is parked.
Observe the legal stipulations in the area where
your vehicle is parked. Engine start via smart-
phone may be limited to certain countries or
regions.
You can execute a maximum of two consecutive
starting attempts via your smartphone. If you
press the start/stop button or insert the Smart-
Key into the ignition lock, you can carry out two
more starting attempts with your smartphone.
The engine runs for ten minutes when starting
with the smartphone.
Once you have started the engine, you can
switch the engine off via your smartphone at any
time.
You can only start the engine via your smart-
phone if: R
the SmartKey is in the ignition lock R
park position ] is selectedR
the accelerator pedal is not depressed R
the anti-theft alarm system is not activated R
the panic alarm is not activated R
the hazard warning lamps are switched off R
the hood is closed R
the doors are closed and locked R
the windows and sliding sunroof are closed Also make sure that: R
the fuel tank is sufficiently filled R
the starter battery has been sufficiently
charged
G WARNING
Limbs could be crushed or trapped if the
engine is started unintentionally during ser-
vice or maintenance work. There is a risk of
injury.
Always secure the engine against uninten-
tional starting before carrying out mainte-
nance or repair work.
Make sure that the engine cannot be started via
your smartphone before carrying out mainte-
nance or repairs. You can prevent an engine
start via your smartphone, for example, if you: R
switch on the hazard warning lamps R
do not lock the doors R
open a side window R
open the sliding sunroof
Pulling away
General notes
G WARNING
If the engine speed is above the idling speed
and you engage transmission position D or R ,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position D or R ,
always firmly depress the brake pedal and do
not simultaneously accelerate.
Depress the accelerator carefully when pulling
away.
The vehicle locks centrally once you have pulled
away. The locking knobs in the doors drop down.
You can open the doors from the inside at any
time.
You can also deactivate the automatic locking
feature, see the Digital Operator's Manual.
It is possible to shift the transmission from posi-
tion ] to the desired position only if you
depress the brake pedal. Only then is the park-
ing lock released. If you do not depress the
brake pedal, the DIRECT SELECT lever can still Driving 139
Dr ivi ng an d parking Z