check engine light MERCEDES-BENZ GLS SUV 2016 User Guide

Replacing the rear window wiper blade
Removing the wiper blades
X
Remove the key from the ignition lock.
X Fold wiper arm :away from the rear window
until it engages. X
Position wiper blade ;at a right angle to
wiper arm :.
X Hold wiper arm :and press wiper blade ;
in the direction of the arrow until it releases.
X Remove wiper blade ;.
Fitting a wiper blade
X Place new wiper blade ;onto wiper arm :.
X Hold wiper arm :and press wiper blade ;
in the opposite direction to the arrow until it
engages.
X Make sure that wiper blade ;is seated cor-
rectly.
X Position wiper blade ;parallel to wiper
arm :.
X Fold wiper arm :back onto the rear window. Problems with the windscreen wipers
Problem
Possible causes/consequences and
M
MSolutions The windscreen wipers
are jammed. Leaves or snow, for example, may be obstructing the windscreen
wiper movement. The wiper motor has been deactivated.
X For safety reasons, you should remove the key from the ignition
lock.
or X Switch off the engine using the Start/Stop button and open the
driver's door.
X Remove the cause of the obstruction.
X Switch the windscreen wipers back on. The windscreen wipers
fail completely. The windscreen wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windscreen wipers checked at a qualified specialist work-
shop. 130
Windscreen wipersLights and windscreen wipers

ignite if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
General notes Vehicles with a petrol engine:
the catalytic
converter is preheated for up to 30 seconds
after a cold start. The sound of the engine may
change during this time.
Automatic transmission X
Shift the transmission to position P
(Y page 156).
The transmission position indicator in the
multifunction display shows P(Y page 158).
i You can start the engine in transmission
position Pand N.
Starting procedure with the key X
To start a diesel engine : turn the key to
position 2in the ignition lock (Y page 148).
The % preglow indicator lamp in the instru-
ment cluster lights up.
X Turn the key to position 3in the ignition lock
(Y page 148) and release it as soon as the
engine is running.
i Vehicles with a diesel engine:
you can
start the engine without preglow if the engine
is warm.
Using KEYLESS-GO to start the engine The Start/Stop button can be used to start the
vehicle without inserting the key into the ignition
lock. The key must be in the vehicle and the
Start/Stop button must be inserted in the igni-
tion lock. This mode for starting the engine oper-
ates independently of the ECO start/stop auto- matic engine start function. X
Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 148).
Vehicles with a petrol engine: the engine
starts.
Vehicles with a diesel engine: preglow is
activated and the engine starts. Pulling away
General notes G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor 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 (Y page 253).
It is only possible to shift the transmission from position Pto the desired position if you depress
the brake pedal. Only then is the parking lock
released. If you do not depress the brake pedal,
the DIRECT SELECT lever can still be moved but the parking lock remains engaged.
i Upshifts take place at higher engine speeds
after a cold start. This helps the catalytic con- verter to reach its operating temperature
more quickly.
Information on automatically releasing the elec-
trical parking brake (Y page 171).150
DrivingDriving and parking

Electric parking brake
General notes G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion if, for example, they:
R release the parking brake
R shift the automatic transmission out of park
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 key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or the system is malfunc-
tioning, it may not be possible to apply the
released parking brake.
X If this is the case, park the vehicle only on
level ground and secure it to prevent it from
rolling away.
X Shift the automatic transmission to position
P.
It may not be possible to release an applied
parking brake if the on-board voltage is low or
the system is malfunctioning. Contact a quali-
fied specialist workshop.
i The electric parking brake carries out a func-
tion check at regular intervals when the
engine is switched off. Noises that occur are
normal. Applying or releasing manually X
To apply: push handle :.
When the electric parking brake is applied,
the red !indicator lamp lights up in the
instrument cluster.
i The electric parking brake can also be
applied when the key is removed.
X To release: pull handle:.
The red !indicator lamp in the instrument
cluster goes out.
i The electric parking brake can be released
only:
R when the key is in position 1in the ignition
lock (Y page 148) or
R if the ignition was switched on using the
Start/Stop button
To ensure that you do not roll backwards when
pulling away on an uphill slope, apply the electric parking brake (Y page 151).
Applying automatically The electric parking brake is automatically
applied when the transmission is in position
P
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 :.
The electric parking brake is also applied auto-
matically if:
R Distance Pilot DISTRONIC brings the vehicle
to a standstill or
R The HOLD function is keeping the vehicle sta-
tionary
R Parking Pilot is keeping the vehicle stationary 170
ParkingDriving and parking

R
Do not stray from marked routes or paths.
R Observe the notes on off-road fording
(Y page 175).
i Information about retrofitting special all-ter-
rain tyres is available from any qualified spe-
cialist workshop.
i Do not use the HOLD function when driving
off-road, on steep uphill or downhill gradients or on slippery or loose surfaces. The HOLD
function cannot hold the vehicle on such sur- faces.
Checklist before off-road driving X
Engine oil level: check the engine oil and top
it up if necessary.
When driving on steep gradients, the oil level must be sufficiently high to ensure a correct
oil supply in the vehicle.
X AdBlue ®
tank (BlueTEC vehicles): check the
level and top up if necessary (Y page 166).
X Tyre-change tool kit: check that the jack is
working and make sure that the wheel
wrench, a robust tow cable and a folding
spade are in the vehicle.
X Wheels and tyres: check the tyre tread
depth and tyre pressure.
X Check for damage and remove any foreign
objects, e.g. small stones, from the wheels/
tyres.
X Replace any missing valve caps.
X Replace dented or damaged wheels.
X Wheels: dented or bent wheels can lead to a
loss of tyre pressure and damage to the tyre
bead. Before driving off-road, check the
wheels and replace them if necessary.
Checklist after off-road driving !
If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
Driving over rough terrain places greater
demands on your vehicle than driving on normal
roads. After driving off-road, check the vehicle.
This allows you to detect damage promptly and reduce the risk of an accident to yourself and
other road users.
X If the Off-road orOff-road Plus drive pro-
gram is selected: select the Individual,Sport,
Comfort orSlippery drive program
(Y page 155).
X Deactivate the LOW RANGE offroad gear
(Y page 230).
X Deactivate DSR (Y page 227).
X Lower the vehicle level again to a level suita-
ble to the road conditions, e.g. to the normal
level.
X Clean the headlamps and rear lights and
check for damage.
X Clean the front and rear licence plates.
X Clean the wheels and tyres with a water jet
and remove any foreign objects.
X Clean the wheels, wheel arches and the vehi-
cle underside with a water jet; check for any
foreign objects and damage.
X Check whether twigs or other parts of plants
have become trapped. These increase the risk
of fire and can damage fuel pipes, brake
hoses or the rubber bellows of the axle joints
and propeller shafts.
X After the trip, examine without fail the entire
undercarriage, wheels, tyres, brakes, body-
work structure, steering, chassis and exhaust
system for damage.
X After driving for extended periods across
sand, mud, gravel, water or in similarly dirty
conditions, have the brake discs, wheels,
brake pads/linings and axle joints checked
and cleaned.
X If you detect strong vibrations after driving
off-road, check for foreign objects in the
wheels and drive train and remove them if
necessary. Foreign objects can disturb the
balance and cause vibrations.
Driving on sand Observe the following rules when driving on
sand:
R Select the Offroaddrive program (vehicles
without Off-Road Engineering package)
(Y page 228).
R Select the Offroaddrive program (vehicles
with Off-Road Engineering package)
(Y page 229).
R Select a higher vehicle level.
R Avoid high engine speeds.
R Use the left-hand steering wheel gearshift
paddle to shift to a lower gear appropriate to
the terrain. 178
Driving
tipsDriving an d parking

Hill start assist will aid you when pulling away on
a hill. Further information on hill start assist
(Y page 151).
Do not shift into transmission position Nwhen
driving off-road. You could lose control of the
vehicle if you attempt to brake the vehicle using
the service brake. If the gradient is too steep for
your vehicle, back up in reverse gear.
Always observe the approach/departure angle
values (Y page 389).
Maximum gradient-climbing capability Always observe the maximum gradient climbing
ability values (Y page 389).
Hilltops When driving up an uphill gradient, slightly
reduce pressure on the accelerator immediately
before reaching the brow of the hill. Make use of the vehicle's own impetus to travel over the
brow.
This style of driving prevents:
R the vehicle from lifting off the ground on the
brow of a hill
R the vehicle from travelling too quickly down
the other side
Driving downhill R
Drive slowly.
R Do not drive at an angle down steep inclines.
Steer into the line of fall and drive with the
front wheels aligned straight. Otherwise, the
vehicle could slip sideways, tip and overturn.
R Before tackling steep downhill gradients, use
the left-hand steering wheel gearshift paddle
to shift to a lower gear.
R Activate DSR. If this is not sufficient, brake
gently. When doing so, make sure that the
vehicle is facing in the direction of the line of fall.
R Check that the brakes are working normally
after a long downhill stretch.
i Off-road ABS is activated when the off-road
program is selected.
At speeds below 30 km/h the front wheels
lock cyclically during braking. The digging-in
effect achieved in the process reduces the
stopping distance when driving off-road. The steerability of the vehicle is considerably
reduced if the wheels lock. Driving systems
Intelligent Drive
Mercedes-Benz Intelligent Drive stands for inno- vative driver assistance and safety systems
which enhance comfort and support the driver in
critical situations. With these intelligent co-ordi- nated systems Mercedes-Benz has set a mile-
stone on the path towards autonomous driving.
Mercedes-Benz Intelligent Drive embraces all
elements of active and passive safety in one well thought-out system – for the safety of the vehi-
cle occupants and that of other road users.
Further information on driving safety systems
(Y page 68). Cruise control
General notes Cruise control maintains a constant road speed
for you. It brakes automatically in order to avoid
exceeding the set speed. You must select a
lower gear in good time on long and steep down-
hill gradients, especially if the vehicle is laden or towing a trailer. By doing so, you will make use of
the braking effect of the engine. This relieves the load on the brake system and prevents the
brakes from overheating and wearing too
quickly.
Use cruise control only if road and traffic con-
ditions are appropriate for maintaining a steady
speed for a prolonged period. You can store any road speed above 30 km/h.
Important safety notes If you fail to adapt your driving style, cruise con-
trol can neither reduce the risk of an accident
nor override the laws of physics. Cruise control
cannot take into account road, weather or traffic
conditions. Cruise control is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good time and for staying in lane. 180
Driving systemsDriving and parking

Do not use cruise control:
R in road and traffic conditions which do not
allow you to maintain a constant speed, e.g. in
heavy traffic or on winding roads
R on smooth or slippery roads. Braking or accel-
erating can cause the drive wheels to lose
traction and the vehicle could then skid
R when there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever :
To activate or increase speed
; LIM indicator lamp
= To activate at the current speed/last stored
speed
? To activate or reduce speed
A To switch between cruise control and the
variable speed limiter
B To deactivate cruise control
You can operate cruise control and the variable
speed limiter with the cruise control lever.
LIM indicator lamp ;on the cruise control lever
indicates which function you have selected:
R LIM indicator lamp; ;off:cruise control is
selected.
R LIM indicator lamp ;
;on: variable speed lim-
iter is selected.
When you activate cruise control, the stored
speed is shown in the multifunction display for
five seconds. In addition, the ésymbol
appears in the multifunction display.
Speedometer with segments: when cruise
control is activated, the segments from the
stored speed to the maximum permitted speed
light up. Selecting cruise control X
Check whether LIM indicator lamp ;is off.
If it is off, cruise control is already selected.
If it is not, press the cruise control lever in the direction of arrow A.
LIM indicator lamp ;in the cruise control
lever goes out. Cruise control is selected.
Activation conditions To activate cruise control, all of the following
activation conditions must be fulfilled:
R the electric parking brake must be released.
R you are driving faster than 30 km/h.
R ESP ®
must be switched on, but not interven-
ing.
R the transmission must be in position D.
R DSR must be deactivated.
R the Offroad Plus drive program must be deac-
tivated (vehicles with the Off-Road Engineer-
ing package).
R the cruise control function must be selected
(Y page 181).
Storing, maintaining and calling up a
speed Storing and maintaining the speed
X Accelerate the vehicle to the desired speed.
X Briefly press the cruise control lever up :or
down ?.
X Remove your foot from the accelerator pedal.
Cruise control is activated. The vehicle auto-
matically maintains the stored speed.
i Cruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient
evens out. Cruise control maintains the
stored speed on downhill gradients by auto-
matically braking the vehicle.
Storing or calling up the speed G
WARNING
If you call up a stored speed and this is dif-
ferent from the current speed, the vehicle
accelerates or brakes. If you do not know
what the stored speed is, the vehicle may Driving systems
181Driving and parking
Z

aid. You are responsible for the distance to the
vehicle in front, for vehicle speed, for braking in
good time and for staying in lane.
If a new driver takes over, advise the new driver
of the speed stored.
Variable speed limiter Cruise control lever
:
To activate or increase speed
; LIM indicator lamp
= To activate at the current speed/last stored
speed
? To activate or reduce speed
A To switch between cruise control or Dis-
tance Pilot DISTRONIC and the variable
speed limiter
B To switch off the variable speed limiter
With the cruise control lever, you can operate
cruise control or Distance Pilot DISTRONIC and
the variable speed limiter.
LIM indicator lamp ;on the cruise control lever
indicates which function you have selected:
R LIM indicator lamp; ;off:cruise control or
Distance Pilot DISTRONIC is selected.
R LIM indicator lamp; ;on:variable speed lim-
iter is selected.
You can use the cruise control lever to limit the
speed to any speed above 30 km/h while the
engine is running.
Selecting speed limiter If there is a change of drivers, advise the new
driver of the limit speed stored.
X Check whether LIM indicator lamp ;is on.
If it is on, the variable speed limiter is already
selected. If it is not, press the cruise control lever in the
direction of arrow A.
LIM indicator lamp ;in the cruise control
lever is on. The variable speed limiter is selec-
ted.
Storing the current speed You can use the cruise control lever to limit the
speed to any speed above 30 km/h while the
engine is running.
X Briefly press the cruise control lever up :or
down ?.
The current speed is stored and shown in the
multifunction display.
Speedometer with segments: the seg-
ments light up from the start of the scale up to
the stored speed limit.
The segments in the multifunction display
light up from the start of the scale up to the
stored speed.
Storing the current speed or calling up the
last stored speed G
WARNING
If you call up the stored speed and it is lower
than the current speed, the vehicle deceler-
ates. If you do not know the stored speed, the vehicle could decelerate unexpectedly. There
is a risk of an accident.
Pay attention to the road and traffic condi-
tions before calling up the stored speed. If you do not know the stored speed, store the
desired speed again.
X Briefly pull the cruise control lever towards
you =.
Setting a speed
X To adjust the set speed in10 km/hincre-
ments:briefly press the cruise control lever
up : beyond the pressure point for a higher
speed, or down ?for a lower speed.
or
X Keep the cruise control lever pressed beyond
the pressure point until the desired speed is
set. Press the cruise control lever up :for a
higher speed or down ?for a lower speed.
X To adjust the set speed in1 km/hincre-
ments:briefly press the cruise control lever Driving systems
183Driving and parking Z

vehicle with guide lines in the multimedia sys-
tem.
The area behind the vehicle is displayed as a
mirror image, as in the rear-view mirror.
i The text shown in the multimedia system
display depends on the language setting. The following are examples of reversing camera
messages in the multimedia system.
Important safety notes The reversing camera is only an aid. It is not a
substitute for your attention to the immediate
surroundings. The responsibility for safe
manoeuvring and parking remains with you.
Make sure that there are no persons, animals or objects in range while manoeuvring and parking.
Under the following circumstances, the revers-
ing camera will not function, or will function in a limited manner:
R if the boot lid is open
R in heavy rain, snow or fog
R at night or in very dark places
R if the camera is exposed to very bright light
R if the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
R If there is a sudden change in temperature,
e.g. when driving into a heated garage in win- ter
R if the camera lens is dirty or obstructed.
Observe the notes on cleaning
(Y page 341)
R if the rear of your vehicle is damaged. In this
case, have the camera position and setting
checked at a qualified specialist workshop.
The field of vision and other functions of the
reversing camera may be restricted due to addi-
tional accessories on the rear of the vehicle (e.g. licence plate holder, bicycle rack).
For technical reasons, leaving the standard
height can result in inaccuracies in the guide
lines on vehicles with a height-adjustable chas-
sis.
i The reversing camera is protected from rain-
drops and dust by a flap. When the reversing
camera is activated, this flap opens.
The flap closes again when:
R you have finished the manoeuvring process
R you switch off the engine
R you open the luggage compartment See the notes on cleaning (Y
page 341).
For technical reasons, the flap may remain
open briefly after the reversing camera has
been deactivated.
Activating/deactivating the reversing
camera X
To activate: make sure that the key is in
position 2in the ignition lock.
X Make sure that the Activation by R gear Activation by R gear
function is selected in the multimedia system; see the Digital Owner's Manual.
X Engage reverse gear.
The reversing camera flap opens. The multi-
media system shows the area behind the vehi-
cle with guide lines.
The image from the reversing camera is avail-
able throughout the manoeuvring process.
X To switch the function mode for vehicles
with trailer tow hitch: using the controller,
select symbol :for the "Reverse parking"
function or symbol ;for "Coupling up a
trailer".
The symbol of the selected function is high-
lighted.
To deactivate: the reversing camera deacti-
vates if you shift the transmission to Por after
driving forwards a short distance.
Displays in the multimedia system The reversing camera may show a distorted view
of obstacles, show them incorrectly or not at all. Obstacles in the following locations are not
shown by the reversing camera:
R Very close to the rear bumper
R Under the rear bumper
R In the area immediately above the recessed
tailgate handle 208
Driving systemsDriving and parking

The flap closes again when:
R you have finished the manoeuvring process
R you switch off the engine
R you open the luggage compartment
See the notes on cleaning (Y page 341).
For technical reasons, the flap may remain
open briefly after the camera has been deac- tivated.
Important safety notes The 360° camera is only an aid and may show a
distorted view of obstacles, show them incor-
rectly or not at all. The 360° camera is not a
substitute for attentive driving.
The responsibility for safe manoeuvring and
parking remains with you. Make sure that there
are no persons, animals or objects in range
while manoeuvring and parking.
You are responsible for safety at all times and
must always pay attention to your surroundings when parking and manoeuvring. This applies to
the areas behind, in front of and beside the vehi- cle. You could otherwise endanger yourself and
others.
The 360° camera will not function or will func-
tion only to a limited extent:
R If the doors are open
R If the exterior mirrors are folded in
R If the tailgate is open
R In heavy rain, snow or fog
R At night or in very dark places
R If the cameras are exposed to very bright light
R If the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
R If there is a sudden change in temperature,
e.g. when driving into a heated garage in win- ter
R If the camera lenses are dirty or covered
R If the vehicle components in which the cam-
eras are fitted are damaged. In this event,
have the camera position and setting checked
at a qualified specialist workshop
Do not use the 360° camera under such cir-
cumstances. You could otherwise injure others
or damage objects when parking the vehicle.
Guide lines are always shown at road level. In
trailer mode, the guide lines are shown at the
level of the trailer coupling. The field of vision and other functions of the
camera system may be restricted due to addi-
tional accessories on the rear of the vehicle (e.g.
licence plate holder, bicycle rack).
On vehicles with height-adjustable suspension,
due to the technical conditions, leaving the
standard height can result in the following:
R Inaccuracies in the guide lines
R Inaccuracies in the display of generated
images (top view)
Activation conditions The 360° camera image can be displayed if:
R your vehicle is equipped with a 360° camera
R the key is in position 2in the ignition lock
R the multimedia system is switched on
Activating the 360° camera X
Press the Øbutton in the centre console
for longer than two seconds.
The following appears depending on whether transmission position Dor Ris selected:
R a split screen with top view and the image
from the front camera or
R a split screen with top view and the image
from the reversing camera
or
X Press the Øbutton in the centre console.
The vehicle menu appears.
X Select 360°
360° camera camera and press 7to confirm.
The following appears depending on whether transmission position Dor Ris selected:
R a split screen with top view and the image
from the front camera or
R a split screen with top view and the image
from the reversing camera
Switching on the 360° camera using
reverse gear You can show images from the 360° camera
automatically by engaging reverse gear. Driving systems
213Driving and parking Z

Blind Spot Assist monitors the area up to 3.0 m
behind your vehicle and directly next to your
vehicle, as shown in the picture.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if there are vehicles at the edge of their lane nearest your vehicle.
On very wide lanes, vehicles in the lane next to
your vehicle may not be displayed if the vehicles
are too far away.
Due to the nature of the system:
R warnings may be issued in error when driving
close to crash barriers or similar solid lane
borders
R warnings may be interrupted when driving
alongside long vehicles, for example lorries,
for a prolonged time
Warning display Blind Spot Assist is not active at speeds below
approximately 30 km/h. Vehicles in the moni-
toring range are then not indicated. :
Yellow indicator lamp/red warning lamp
If Blind Spot Assist is activated, indicator
lamp :in the exterior mirrors lights up yellow
up to a speed of 30 km/h. At speeds above
30 km/h, the indicator lamp goes out and Blind
Spot Assist is operational.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the correspond-
ing side lights up red. This warning always
occurs when a vehicle enters the blind spot
monitoring range from behind or from the side.
When you overtake a vehicle, the warning only
occurs if the difference in speed is less than
12 km/h. The yellow indicator lamp goes out if reverse
gear is engaged. Blind Spot Assist is then deac-
tivated.
The brightness of the indicator/warning lamps
is adjusted automatically according to the ambi-
ent light.
Collision warning
If a vehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, a double warning tone
sounds. Red warning lamp :flashes. If the turn
signal remains on, detected vehicles are indica-
ted by the flashing of red warning lamp :.
There are no further warning tones.
Activating Blind Spot Assist
X Make sure that Blind Spot Assist is activated
in the on-board computer (Y page 250).
X Turn the key to position 2in the ignition lock.
Warning lamps :in the exterior mirrors light
up red for approximately 1.5 seconds and
then turn yellow.
Towing a trailer
If you couple up a trailer, make sure that you
have correctly established the electrical con-
nection. This can be accomplished by checking
the trailer lighting. Blind Spot Assist is then
deactivated. The indicator lamp lights up yellow
in the exterior mirrors and the Blind Spot Blind Spot
Assist not available when towing a
Assist not available when towing a
trailer See Owner's Manual
trailer See Owner's Manual message
appears in the multifunction display.
i You can deactivate the indicator lamps in
the exterior mirrors.
To do so, you will need to deactivate Blind
Spot Assist if:
R the key is in position 2in the ignition lock
R the engine is not running 220
Driving systemsDriving and parking