lock MERCEDES-BENZ GLC 2017 Repair Manual

The arrows in the transmission position display
show how and into which transmission positions
you can shift using the DIRECT SELECT lever.
If the transmission position display in the mul-
tifunction display is not working, you should pull
away carefully to check whether the desired
transmission position is engaged. Ideally, you
should select transmission position [ and
drive program E or S .
Transmission positions E Park position
This prevents the vehicle from rolling
away when stopped.
Only shift the transmission into posi-
tion ] ( Y
page 141) when the vehi-
cle is stationary. The parking lock
should not be used as a brake when
parking. Always apply the electronic
parking brake in addition to the park-
ing lock in order to secure the vehi-
cle.
Park position ] is automatically
engaged if: R
you switch off the engine using the
SmartKey and remove the Smart-
Key R
you switch off the engine using the
SmartKey or using the Start/Stop
button and open the driver's door
or front-passenger door R
you open the driver's door when
the vehicle is stationary or when
driving at a very low speed and the
transmission is in position [ or
^
In the event of a malfunction of the
vehicle's electronics, the transmis-
sion may lock in position ] . Have
the vehicle electronics checked
immediately at a qualified specialist
workshop.
F Reverse gear
You can only shift the transmission
into position ^ when the vehicle is
stationary ( Y
page 142). D Neutral
Do not shift the transmission to \\
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brake pedal will allow
you to move the vehicle freely, e.g. to
push it or tow it.
If ESP ®
is deactivated or faulty: shift
the transmission to position \\ if the
vehicle is in danger of skidding, e.g.
on icy roads.
If you switch the engine off with the
transmission in position ^ or [ ,
the automatic transmission shifts to
\\ automatically.
! Coasting in neutral \\ may
cause damage to the drive train.
: Drive
The automatic transmission changes
gear automatically. All forward gears
are available.
Driving tips
Changing gear The automatic transmission shifts through the
individual gears automatically when it is in trans-
mission position [ . This automatic gear shift-
ing behavior is determined by: R
the selected drive program R
the position of the accelerator pedal R
the road speed
Accelerator pedal position Your style of driving influences how the auto-
matic transmission shifts gear: R
little throttle: early upshifts R
more throttle: late upshifts
Double-clutch function
When shifting down, the double-clutch function
is active regardless of the currently selected
drive program. The double-clutch functionAutomatic transmission 143
Driving and parking Z

clean water. Seek medical assistance with-
out delay. R
If fuel is swallowed, seek medical assis-
tance without delay. Do not induce vomit-
ing. R
Immediately change out of clothing which
has come into contact with fuel.
G WARNING
Electrostatic buildup can create sparks and
ignite fuel vapors. There is a risk of fire and
explosion.
Always touch the vehicle body before opening
the fuel filler flap or touching the fuel pump
nozzle. Any existing electrostatic buildup is
thereby discharged.
Do not get into the vehicle again during the refu-
eling process. otherwise electrostatic charge
could build up again.
G WARNING
Vehicles with a diesel engine:
If you mix diesel fuel with gasoline, the flash
point is lower than that of pure diesel fuel.
When the engine is running, exhaust system
components could overheat without being
noticed. There is a risk of fire.
Never refuel with gasoline. Never mix gasoline
with diesel fuel.
! Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the ignition
if you accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel system.
Even small amounts of the wrong fuel could
result in damage to the fuel system and the
engine. Notify a qualified specialist workshop
and have the fuel tank and fuel lines drained
completely.
! Do not use gasoline to refuel vehicles with a
diesel engine. Do not switch on the ignition if
you accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel system.
Even small amounts of the wrong fuel could
result in damage to the fuel system and the
engine. The repair costs are high. Notify a
qualified specialist workshop and have the
fuel tank and fuel lines drained completely. ! Overfilling the fuel tank could damage the
fuel system.
! Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
! Use a filter when adding fuel from a fuel can.
The fuel lines and/or the fuel injection system
could otherwise be blocked by particles from
the fuel can.
If you overfill the fuel tank, fuel could spray out
when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
( Y
page 364).
Refueling
General information Pay attention to the important safety notes
( Y
page 148).
If you unlock/lock the vehicle from the outside,
the fuel filler flap also unlocks/locks.
The position of the fuel filler cap is displayed in
the instrument cluster

X
Switch off the engine. X
Remove the SmartKey from the ignition lock.
or, in vehicles with KEYLESS-GO start-function
or KEYLESS ‑ GOX
Open the driver's door.
The vehicle electronics are now in position

Problems with fuel and the fuel tank Problem
Possible causes/consequences and P Solutions
Fuel is leaking from the
vehicle.
G WARNING
The fuel line or the fuel tank is faulty.
Risk of explosion or fire. X
Apply the electric parking brake. X
Switch off the engine. X
Remove the SmartKey from the ignition lock.
or, in vehicles with KEYLESS-GO start-function or KEYLESS ‑ GOX
Open the driver's door.
The vehicle electronics are now in position

To avoid transporting already opened refill con-
tainers in the vehicle, completely empty refill
bottles or canisters when filling the DEF tank, if
possible.
For further information on DEF, see
( Y
page 367).
Opening/closing the DEF filler cap X
To open: switch the ignition off.X
Press the fuel filler flap in the direction of
arrow C .
The fuel filler flap swings up. X
Turn blue DEF filler cap D counter-clockwise
and remove it.
DEF filler cap D is secured with a plastic
strip. X
To close: place DEF filler cap D on the filler
neck and turn it clockwise. X
To close the fuel filler flap, press it in the
direction of arrow C .X
Drive faster than 10 mph (16 km/h).
The Refill AdBlue See Operator’s Man‐
ual message goes out after approximately
one minute.
If the Refill AdBlue See Operator’s Man‐
ual message continues to be shown in the mul-
tifunction display, you must add more DEF.
i The fuel filler flap is unlocked or locked
automatically when you unlock or lock the
vehicle.
DEF refill canisters
! Do not screw the disposable hose on too
tight. The disposable hose could otherwise be
damaged and DEF may leak out. X
Unscrew the cap from the opening on top of
DEF refill canister D .X
Place disposable hose C on the opening of
DEF refill canister D and screw it on clock-
wise until hand-tight.
Disposable hose C remains closed until you
fasten disposable hose C to the DEF filler
neck of the vehicle.
X
Place disposable hose C on the filler neck on
the vehicle and screw it on clockwise until
hand-tight. When you feel resistance, dispos-
able hose C is sufficiently secured. X
Lift up and tip DEF refill canister D .
Filling stops when the DEF tank is completely
filled. Do not fill the DEF tank any further. DEF
refill canister D can be removed when it has
been only partially emptied. X
Turn disposable hose C on the filler neck of
the vehicle counter-clockwise and remove it. X
Turn disposable hose C on the opening of
DEF refill canister D counter-clockwise and
remove it. X
Reseal DEF refill canister D with the cap.
DEF refill canisters are available at many gas
stations or at a qualified specialist workshop.
DEF refill canisters are often sold with a filler
hose. A filler hose that does not exactly fit the
vehicle's DEF tank offers no protection against Refueling 153
Driving and parking Z

overfilling. DEF may leak if overfilled. Mercedes-
Benz offers a special disposable hose with over-
fill protection. You can obtain this from any
authorized Mercedes-Benz Center. DEF is avail-
able in a variety of containers and receptacles.
Only use the disposable hose with the
Mercedes-Benz DEF refill canisters.
DEF refill bottle
! Only screw on the DEF refill bottle hand-
tight. Otherwise, the thread of the DEF refill
bottle could be damaged and DEF could leak
out.
X
Unscrew the protective cap from DEF refill
bottle C .X
Place DEF refill bottle C on the filler neck as
shown and screw it on clockwise until hand-
tight. X
Press DEF refill bottle C towards the filler
neck.
The DEF tank is filled. This may take up to one
minute.
When DEF refill bottle C is no longer pressed,
filling stops and the bottle may be taken off
again after being only partially emptied. X
Release DEF refill bottle C .X
Turn DEF refill bottle C counter-clockwise
and remove it. X
Screw the protective cap onto DEF refill bot-
tle C again.
DEF refill bottles are available at many gas sta-
tions or at a qualified specialist workshop. Refill
bottles without a threaded cap do not provide
overfill protection. DEF may leak if overfilled.
Mercedes Benz offers special refill bottles with a
threaded seal. These are available at any author-
ized Mercedes-Benz Center. Parking
Important safety notes
G WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the vehi-
cle which are hot. Take particular care not to
park on dry grassland or harvested grain
fields.
G WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example: R
release the parking brake. R
shift the automatic transmission out of the
parking position P .R
start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. 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 unsupervised in the vehicle.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally: R
the electric parking brake must be applied. R
the transmission must be in position ] and
the SmartKey must be removed from the igni-
tion lock. R
the front wheels must be turned towards the
curb on steep uphill or downhill gradients. R
the empty vehicle must be secured at the
front axle with a wheel chock or similar, for
example, on uphill or downhill gradients. R
on uphill or downhill gradients the laden vehi-
cle must also be secured at the rear axle, for
example with a wheel chock or similar object.154
Parking
Driving and parking

switched off. The sounds that can be heard while
this is occurring are normal.
Applying or releasing manually X
To apply: push handle C .
When the electric parking brake is applied,
the red I (USA only) or $ (Canada
only) indicator lamp lights up in the instru-
ment cluster.
The electric parking brake can also be applied
when the SmartKey is removed. X
To release: pull handle C .
The red I (USA only) or $ (Canada
only) indicator lamp in the instrument cluster
goes out.
The electric parking brake can only be released: R
if the SmartKey is in position G or H in the
ignition lock ( Y
page 132) orR
if the ignition was switched on using the
Start/Stop button
Applying automatically The electric parking brake is automatically
applied when the transmission is in position ]
and: R
the engine is switched off or R
the driver is not wearing a seat belt and the
driver's door is opened
To prevent the electric parking brake from being
automatically applied, pull handle C . The electric parking brake is also engaged auto-
matically if: R
DISTRONIC PLUS brings the vehicle to a
standstill or R
the HOLD function is keeping the vehicle sta-
tionary R
Active Parking Assist is keeping the vehicle
stationary
In addition, at least one of the following condi-
tions must be fulfilled: R
the engine is switched off R
the driver is not wearing a seat belt and the
driver's door is opened R
there is a system malfunction R
the power supply is insufficient R
the vehicle is stationary for a lengthy period
The red $ indicator lamp in the instrument
cluster lights up.
The electric parking brake is not automatically
engaged if the engine is switched off by the ECO
start/stop function.
Releasing automatically Your vehicle's electric parking brake is auto-
matically released if all of the following condi-
tions are met: R
the seat belt has been fastened. R
the engine is running. R
the transmission is in position [ or ^ and
you accelerate.
or
you shift from transmission position ] to
position [ or ^ . You will need to accelerate
more on steeper gradients.
If the transmission is in position ^ the tailgate
must be closed.
If your seat belt is not fastened, the following
conditions must be fulfilled to automatically
release the electric parking brake: R
the driver's door is closed. R
you are shifting out of transmission position
] or you have previously driven faster than
2 mph (3 km/h).
Ensure that you do not depress the accelerator
pedal unintentionally. Otherwise the parking
brake will be released and the vehicle will start
to move.156
Parking
Driving and parking

When you take advantage of engine braking, a
drive wheel may not turn for some time, e.g.
on a slippery road surface. This could cause
damage to the drive train. This type of damage
is not covered by the Mercedes-Benz war-
ranty.
Heavy and light loads
G WARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This
increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately. Drive
on for a short while. This allows the airflow to
cool the brakes more quickly.
Wet roads If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt resi-
due may form on the brake discs and brake
pads. This can result in a significantly longer
braking distance. R
In order to prevent any salt build-up, apply the
brakes occasionally while paying attention to
the traffic conditions. R
Carefully depress the brake pedal and the
beginning and end of a journey. R
Maintain a greater distance to the vehicle
ahead.
Servicing the brakes
! The brake fluid level may be too low, if: R
if the red brake warning lamp lights up in
the instrument cluster and R
you hear a warning tone while the engine is
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immediately.
Consult a qualified specialist workshop to
arrange this.
! Vehicles with 4MATIC: function or per-
formance tests may only be carried out on a 2-
axle dynamometer. If you wish to operate the
vehicle on such a dynamometer, please con-
sult a qualified specialist workshop in
advance. You could otherwise damage the
drive train or the brake system.
! Vehicles with 4MATIC: the ESP ®
system
operates automatically. If the electric parking
brake is tested on a brake dynamometer, the
engine and ignition must be switched off: turn
the SmartKey in the ignition lock to position

For safety reasons, Mercedes-Benz recom-
mends only installing the following brake disks
and brake pads/linings: R
brake disks that have been approved by
Mercedes-Benz R
brake pads/linings that have been approved
by Mercedes-Benz or that are of an equivalent
standard of quality
Other brake disks or brake pads/linings can
compromise the safety of your vehicle.
Always replace all brake disks and brake pads/
linings on an axle at the same time. Always
install new brake pads/linings when replacing
brake disks.
The vehicle is equipped with lightweight brake
disks to which the wheel assembly with rim and
threaded connection is matched.
The use of brake disks other than those
approved by Mercedes-Benz can change the
track width and is subject to approval, if appli-
cable.
Shock-type loads when handling the brake
discs, such as when changing wheels, can lead
to a reduction in comfort when driving with light-
weight brake discs. Avoid shock-type loads on
the lightweight brake disks, particularly on the
brake plate.
Mercedes-Benz recommends that you only use
brake fluid that has been specially approved for
your vehicle by Mercedes-Benz, or which corre-
sponds to an equivalent quality standard. Brake
fluid which has not been approved for
Mercedes-Benz vehicles or which is not of an
equivalent quality could affect your vehicle's
operating safety.
Driving on wet roads
Hydroplaning If water has accumulated to a certain depth on
the road surface, there is a danger of hydro-
planing occurring, even if: R
you drive at low speeds R
the tires have adequate tread depth
For this reason, in the event of heavy rain or in
conditions in which hydroplaning may occur,
you must drive in the following manner: R
lower your speed R
avoid ruts R
avoid sudden steering movements R
brake carefully
Driving on flooded roads
! Bear in mind that vehicles traveling in front
or in the opposite direction create waves. This
may cause the maximum permissible water
depth to be exceeded.
Failure to observe these notes may result in
damage to the engine, electrical systems and
transmission.
If you have to drive on stretches of road on which
water has collected, please bear in mind that: R
in the case of standing water, the water level
may be no higher than the lower edge of the
vehicle body R
you should drive no faster than walking pace
Winter driving
G WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
G DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a
window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur-
faces. Avoid sudden acceleration, steering and Driving tips 161
Driving and parking Z

Important safety notes
G WARNIN G
When th e vehicl e is bein g lowered, people
could become trapped if their limb s are
between th e vehicl e body and th e wheels or
underneat h th e vehicle. Ther e is a ris k of
injury.
Mak e sur e no on e is underneat h th e vehicl e or
in th e immediat e vicinity of th e whee l arches
when th e vehicl e is bein g lowered.
i If on e of th e door s is open , th e vehicl e is no t
lowered.
Vehicle level Setting the ra ised vehicle level
It is possible to choos e between th e "Normal"
and "Raised " vehicl e levels belo w a spee d of
50 mph (80 km/h). Selec t th e "Normal" setting
for normal road surfaces and "Raised " for driving
wit h snow chain s or on particularly poor road
surfaces. Your selection remain s store d eve n if
you remove th e SmartKey from th e ignition lock.X
Start th e engine.
If indicator lamp D is no t lit :X
Press butto n C .
Indicato r lamp D lights up. The vehicl e is
raised by 0. 6 in (15 mm ) comp ared to the
normal level.
The Vehicle Rising
message appears on
the multifunction display.
i The message disappears after ten seconds,
irrespective of the level reached. If necessary,
the vehicle is raised further. The "Raised level" setting is canceled if you: R
drive faster than 75 mph (120 km/h) R
drive for approximately three minutes at a
speed above 50 mph (80 km/ h)
The "Raised level" remains active when you are
not driving within these speed ranges.
Setting the normal vehicle level X
Start the engine.
If indicator lamp D is lit: X
Press button C .
Indicator lamp D goes out. The vehicle is
adjusted to the height of the currently selec-
ted drive program ( Y
page 139).
Suspension tuning General notes The Adaptive Damping System automatically
controls the calibration of the dampers.
The damping is tuned individually to each wheel
and depends on: R
your driving style, e.g. sporty R
the road surface condition, e.g. bumps R
your individual selection, i.e. sports or com-
fort
Your selection remains stored even if you
remove the SmartKey from the ignition lock.
Sports tuning In the "Sport" and "Sport Plus" drive programs,
the firmer suspension setting ensures even bet-
ter contact with the road. Select this mode when
employing a sporty driving style, e.g. on winding
country roads. X
Select the S or S+ drive program with the
DYNAMIC SELECT switch ( Y
page 139).
The vehicle is lowered by 0.6 in (15 mm) com-
pared to the normal level.
Each time you restart the engine, the vehicle is
raised to normal level again and drive program C
is activated. For further information about start-
ing the engine, see ( Y
page 133).
Comfort tuning
In the "Eco" and "Comfort" drive programs, the
driving characteristics of your vehicle are more
comfortable. Therefore, select this mode if you
favor a more comfortable driving style. SelectDriving systems 173
Driving and parking Z