brake sensor MERCEDES-BENZ GL 2016 User Guide

Useful information
i This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops ( Y
page 29).
Notes on breaking-in a new vehicle
Important safety notesThe sensor system of some driving and driv-
ing safety systems adjusts automatically
while a certain distance is being driven after
the vehicle has been delivered or after
repairs. Full system effectiveness is not
reached until the end of this teach-in proce-
dure.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometers of driving. Compen-
sate for this by applying greater force to the
brake pedal.
The first 1000 miles (1500 km)
The more you look after the engine when it is
new, the more satisfied you will be with its
performance in the future. R
You should therefore drive at varying vehi-
cle and engine speeds for the first
1000 miles (1500 km). R
Avoid heavy loads, e.g. driving at full throt-
tle, during this period. R
Change gear in good time, before the tach-
ometer needle is

press the cruise control lever up C or
down D to the pressure point.
Every time the cruise control lever is
pressed up C or down D the last speed
stored is increased or reduced.
i Cruise control is not deactivated if you
depress the accelerator pedal. For exam-
ple, if you accelerate briefly to overtake,
cruise control adjusts the vehicle's speed
to the last speed stored after you have fin-
ished overtaking.
Deactivating cruise control
There are several ways to deactivate cruise
control: X
Briefly press the cruise control lever for-
wards C .
or X
Brake.
Cruise control is automatically deactivated if: R
you engage the electric parking brake R
you are driving at less than 20 mph
(30 km/h) R
ESP ®
intervenes or you deactivate ESP ®
R
you activate DSR R
you activate off-road program 2 on vehicles
with the ON&OFFROAD package R
you shift the transmission to position N
while driving
If cruise control is deactivated, you will hear a
warning tone. You will see the Cruise Con‐
trol Off message in the multifunction dis-
play for approximately five seconds. i When you switch off the engine, the last
speed stored is cleared.
DISTRONIC PLUS
General notes DISTRONIC PLUS regulates the speed and
automatically helps you maintain the dis-
tance to the vehicle detected in front. Vehi-
cles are detected with the aid of the radar
sensor system. DISTRONIC PLUS brakes
automatically so that the set speed is not
exceeded.
You must select a lower gear in good time on
long and steep downhill 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.
If DISTRONIC PLUS detects that there is a risk
of a collision, you will be warned visually and
acoustically. DISTRONIC PLUS cannot pre-
vent a collision without your intervention. An
intermittent warning tone will then sound and
the distance warning lamp will light up in the
instrument cluster. Brake immediately in
order to increase the distance to the vehicle
in front or take evasive action provided it is
safe to do so.
For DISTRONIC PLUS to assist you, the radar
sensor system must be operational.
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control in the speed range between 20 mph
(Canada: 30 km/h) and 120 mph (Canada:
200 km/ h) . If a vehicle is driving in front of
you, it operates in the speed range between
0 mph (0 km/h) and 120 mph (Canada:
200 km/h).
Do not use DISTRONIC PLUS while driving on
roads with steep gradients.
As DISTRONIC PLUS transmits radar waves, it
can resemble the radar detectors of the
responsible authorities. You can refer to the Driving systems 205
Driving and parking Z

relevant section in the Operator's Manual if
questions are asked about this.
i USA only:
This device has been approved by the FCC
as a "Vehicular Radar System". The radar
sensor is intended for use in an automotive
radar system only. Removing, tampering
with, or altering the device will void any
warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
i Canada only: This device complies with
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
1. This device may not cause harmful inter-
ference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the
device will void any warranties, and is not
permitted. Do not tamper with, alter, or use
in any non-approved way.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
Important safety notes
G WARNING
DISTRONIC PLUS does not react to: R
people or animals R
stationary obstacles on the road, e.g. stop-
ped or parked vehicles R
oncoming and crossing traffic
As a result, DISTRONIC PLUS may neither give
warnings nor intervene in such situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. G WARNING
DISTRONIC PLUS cannot always clearly iden-
tify other road users and complex traffic sit-
uations.
In such cases, DISTRONIC PLUS may: R
give an unnecessary warning and then
brake the vehicle R
neither give a warning nor intervene R
accelerate or brake unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, in particular when warned to do so by
DISTRONIC PLUS.
G WARNING
DISTRONIC PLUS brakes your vehicle with up
to 40% of the maximum braking force. If this
braking force is insufficient, DISTRONIC PLUS
warns you visually and audibly. There is a risk
of an accident.
In such cases, apply the brakes yourself and
try to take evasive action.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations.
To prevent damage to the vehicle, deacti-
vate DISTRONIC PLUS and the HOLD func-
tion in the following or other similar situa-
tions: R
when towing the vehicle R
in the car wash
If you fail to adapt your driving style,
DISTRONIC PLUS can neither reduce the risk
of accident nor override the laws of physics.
DISTRONIC PLUS cannot take into account
the road, traffic and weather conditions.
DISTRONIC PLUS 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 your lane.206
Driving systems
Driving and parking

PARKTRONIC
Important safety notes PARKTRONIC is an electronic parking aid with
ultrasonic sensors. It monitors the area
around your vehicle using six sensors in the
front bumper and four sensors in the rear
bumper. PARKTRONIC indicates visually and
audibly the distance between your vehicle
and an object.
PARKTRONIC is only an aid. It is not a replace-
ment for your attention to your immediate
surroundings. You are always responsible for
safe maneuvering, parking and exiting a park-
ing space. When maneuvering, parking or
pulling out of a parking space, make sure that
there are no persons, animals or objects in
the area in which you are maneuvering.
! When parking, pay particular attention to
objects above or below the sensors, such
as flower pots or trailer drawbars.
PARKTRONIC does not detect such objects
when they are in the immediate vicinity of
the vehicle. You could damage the vehicle
or the objects.
The sensors may not detect snow and other
objects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic
car wash, the compressed-air brakes on a
truck or a pneumatic drill could cause
PARKTRONIC to malfunction.
PARKTRONIC may not function correctly on
uneven terrain.
PARKTRONIC is activated automatically when
you: R
switch on the ignition R
shift the transmission to position D , R or NR
release the electric parking brake
PARKTRONIC is deactivated at speeds above
11 mph (18 km/h). It is reactivated at lower
speeds. Range of the sensors General notes
PARKTRONIC does not take objects into con-
sideration that are: R
below the detection range, e.g. people, ani-
mals or objects. R
above the detection range, e.g. overhang-
ing loads, truck overhangs or loading
ramps.
C
Sensors in the front bumper, left-hand
side (example)
The sensors must be free from dirt, ice or
slush. They can otherwise not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them
( Y
page 380).224
Driving systems
Driving and parking

Adaptive
When Adaptive
is selected, no warning vibra-
tion occurs if: R
you swit ch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time. R
a driv ing safety system intervenes, e.g.
AB S, BAS or ESP ®
.R
you accelerate hard, e.g. kickdown. R
you brake hard. R
you steer actively, e.g. swer ve to avoid an
obstacle or change lanes quickly. R
you cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane
marking, the system recognizes certain con-
dit ions and warns you accordingly.
The warning vibr ation occurs earlier if:R
you appr oach the outer lane marking on a
ben d. R
the road has very wide lanes, e.g. a high-
way. R
the system recognizes solid lane markings.
The warning vibr ation occurs later if:R
the road has narrow lanes. R
you cut the corner on a ben d.
Active Driving Assistance package
General notes
The Active Dr ivin g Assistance package con-
sists of DI ST RONIC PLUS ( Y
page 205), Acti ve
Blin d Spo t Assist ( Y
page 248) and Active
Lane Kee pin g Assist ( Y
page 251).
Active Blind Spot Assist
General notes
Active Blin d Spo t Assist mon it ors the areas
on either side of the vehicle that are not
dire ct ly vis ible to the driver with two lateral,
rear-facing radar sensors. A warning lamp
lights up in the exterior mirrors and draws your attention to vehicles detected in the
mon it ored area. If you then switch on the cor-
respon din g turn signal to change lanes, you
will also receive a visual and audible co llisio n
warning. If a risk of lateral co llisio n is detec-
te d, correct ive braking may help you avoid a
co llisio n. Before a course-correcting brake
applic ation, Acti ve Blind Spo t Assist evalu-
ates the space in the dire ction of travel and at
the sides of the vehicle. For this, Acti ve Blind
Spot Assist uses the forward-facing radar
sensors.
Acti ve Blind Spo t Assist supports you from a
speed of approximately 20 mph (30 km/h).
Imp ortant safety notes
Acti ve Blind Spo t Assist is on ly an aid and is
not a substitute for attenti ve driving.
G WARNIN G
Activ e Blin d Spo t Assist does no t reac t to :R
vehicles overtake n to o closely on th e side ,
placing them in th e blin d spot areaR
vehicles whic h approac h wit h a larg e spee d
differential and overtake your vehicl e
As a result , Activ e Blin d Spo t Assist may nei-
ther giv e warning s no r interven e in suc h sit -
uations. Ther e is a ris k of an accident.
Always observ e th e traffic condition s care-
fully, and maintai n a saf e lateral distance.
i USA only: This device has been approved
by the FCC as a "Vehicular Radar System".
The radar sensor is intended for use in an
automot ive radar system only. Removal,
tampering, or altering of the device will void
any warranties, and is not permitted by the
FCC. Do not tamper wit h, alter, or use in
any non-approved way.
Any unauthorized mod ific ation to th is
device could void the user's authority to
operate the equipm ent.
i Canada only: This device complies wit h
RSS -210 of In dustry Canada. Operation is
subject to the following two cond it ions:248
Driving systems
Driving and parking

Either no braking application, or a course-
correcting brake application adapted to the
driving situation occurs if: R
there are vehicles or obstacles, e.g. crash
barriers, close to both sides of your vehicle. R
a vehicle approaches you too closely at the
side. R
you have adopted a sporty driving style with
high cornering speeds. R
you brake or accelerate significantly. R
a driving safety system intervenes, e.g.
ESP ®
or PRE-SAFE ®
Brake.R
ESP ®
is switched off.R
the off-road program is activated (vehicles
without the ON&OFFROAD package). R
off-road program 1 or 2 is activated (vehi-
cles with the ON&OFFROAD package). R
the LOW RANGE off-road gear is activated
(vehicles with the ON&OFFROAD package). R
a loss of tire pressure or a defective tire is
detected.
Switching on Active Blind Spot Assist X
Make sure that Active Blind Spot Assist is
activated in the on-board computer
( Y
page 282). X
Turn the SmartKey to position 2 in the igni-
tion lock.
Warning lamps C in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Towing a trailer
When you attach a trailer, make sure you have
co rr ectly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. Active Blind Spot Assist is
then deactivated. The indicator lamp lights up
yellow in the exterior mirrors and the Active
Blind Spot Assist Currently Unavail‐
able See Operator's Manual message
appears in the multifunction display. Active Lane Keeping Assist General notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of camera C
at the top of the windshield. Active Lane
Keeping Assist detects lane markings on the
road and warns you before you leave your
lane unintentionally. If you do not react to the
warning, a lane-correcting application of the
brakes can bring the vehicle back into the
original lane.
This function is available in a speed range
between 40 mph and 120 mph (60 km/h and
200 km/h).
For Active Lane Keeping Assist to assist you
when driving, the radar sensor system must
be operational
Important safety notes
If you fail to adapt your driving style, Active
Lane Keeping Assist can neither reduce the
risk of accident nor override the laws of phys-
ics. Active Lane Keeping Assist cannot take
into account road, weather or traffic condi-
tions. Active Lane Keeping Assist 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 your
lane.
Active Lane Keeping Assist cannot continu-
ously keep your vehicle in its lane.
G WARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.Driving system s 251
Dr ivi ng an d parking Z

Display messages
Possible causes/consequences and P Solutions
PRE-SAFE Functions
Currently Limite d
See Operator' s Man ‐
ual Adaptive Brake Assis t or th e PRE-SAF E ®
Brake is temporarily inop-
erative . Possibl e causes are:R
function is impaire d due to heav y rain or snow.R
th e rada r sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi o sta-
tion s or other source s of electromagnetic radiation .R
Mercedes-AMG vehicles: ES P ®
is deactivatedR
th e system is outside th e operating temperature range.R
th e on-boar d voltag e is to o low.
Whe n th e causes state d abov e no longer apply, th e display mes -
sage disappears.
Adaptive Brake Assis t or th e PRE-SAF E ®
Brake is operative again .
If th e display message does no t disappear :X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Secur e th e vehicl e against rollin g away ( Y
page 189).X
Restart th e engine. X
Mercedes-AMG vehicles: reactivat e ES P ®
( Y
page 74).
PRE-SAFE Functions
Limite d See Opera‐
tor's Manual Adaptive Brake Assis t or th e PRE-SAF E ®
Brake is malfunctioning.
BA S PLU S or th e distanc e warnin g function may also hav e failed.X
Visit a qualified specialist workshop .298
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Radar Sensor s
Dirty See Opera‐
tor's Manual At leas t on e of th e following drivin g systems or drivin g safet y sys-
tems is temporarily restricted or inoperative: R
PRE-SAF E ®
Brake R
Active Lan e Keepin g Assis tR
Active Blind Spot Assis t
If th e rada r sensor system in fron t is dirty, Active Blind Spot Assis t
will no t perform a course-correcting brak e application .
Possibl e causes are: R
th e sensor s in th e radiato r trim and/o r in th e bumpers are dirtyR
th e function of th e drivin g system and/o r drivin g safet y system
is impaire d due to heav y rain or snow.
A warnin g tone also sounds.
Whe n th e causes state d abov e no longer apply, th e display mes -
sage disappears. Al l drivin g systems and drivin g safet y systems
are operative again .
If th e display message does no t disappear :X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Secur e th e vehicl e against rollin g away ( Y
page 189).X
Switc h of f th e engine.X
Clean th e sensor s in th e following location s ( Y
page 380):R
in th e radiato r trim R
in th e fron t bumper R
in th e rear bumper, particularl y in th e middle of th e rear
bumper X
Restart th e engine.
The display message disappears.
u Restraint sys . mal ‐
function Consul t
workshop The restrain t system is faulty.
The u warnin g lamp also lights up in th e instrumen t cluster.
G WARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th e event of an accident, may no t be
triggered .
There is an increase d ris k of injury.X
Visit a qualified specialist workshop .
Observ e th e additional information on restrain t systems
( Y
page 44) . Display messages 29 9
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
DISTRONIC PLU S off DISTRONIC PLU S has been deactivated ( Y
page 205).
If it was deactivated automatically, a warnin g tone also sounds.
DISTRONIC PLU S
available again DISTRONIC PLU S is operational again after havin g been tempo -
rarily unavailable . You can no w reactivat e DISTRONIC PLU S
( Y
page 205).
DISTRONIC PLU S Cur ‐
rently Unavailable
See Operator' s Man ‐
ual DISTRONIC PLU S is temporarily inoperative.
Possibl e causes are: R
function is impaire d due to heav y rain or snow.R
th e rada r sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi o sta-
tion s or other source s of electromagnetic radiation .R
th e system is outside th e operating temperature range.R
th e on-boar d voltag e is to o low.
A warnin g tone also sounds.
Whe n th e causes state d abov e no longer apply, th e display mes -
sage disappears.
DISTRONIC PLU S is operational again .
If th e display message does no t disappear :X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Secur e th e vehicl e against rollin g away ( Y
page 189).X
Restart th e engine.
DISTRONIC PLU S
inoperative DISTRONIC PLU S is defective.
The following may hav e also failed:R
BA S PLU S R
PRE-SAF E ®
Brake
A warnin g tone also sounds. X
Visit a qualified specialist workshop .
DISTRONIC PLU S sus ‐
pended You hav e depressed th e accelerato r pedal . DISTRONIC PLU S is no
longer controllin g th e speed of th e vehicle.X
Remove your foot from th e accelerato r pedal .
DISTRONIC PLU S
- - - mph An activation condition fo r DISTRONIC PLU S is no t fulfilled .X
Chec k th e activation condition s fo r DISTRONIC PLU S
( Y
page 205).316
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Tir e Press. Moni‐
tor Currently
Unavailable Becaus e there is interferenc e from a stron g source of radi o waves,
no signal s from th e tire pressur e sensor s are detected. The tire
pressur e monitor is temporarily malfunctioning. X
Drive on .
The tire pressur e monitor restarts automatically as soo n as th e
problem has been resolved.
Tir e Press. Sen ‐
sor(s) Missin g There is no signal from th e tire pressur e sensor of on e or several
wheels. The pressur e of th e affecte d tire is no t displayed in th e
multifunction display. X
Hav e th e fault y tire pressur e sensor replaced at a qualified spe -
cialist workshop .
Tir e Pressure Mon ‐
ito r Inoperative
No Wheel Sensor s The wheels mounted do no t hav e a suitable tire pressur e sensor .
The tire pressur e monitor is deactivated.X
Moun t wheels wit h suitable tire pressur e sensors.
The tire pressur e monitor is activated automatically after drivin g
fo r a few minutes.
Tir e Press. Moni‐
tor Inoperative The tire pressur e monitor is faulty.X
Visit a qualified specialist workshop .
Vehicle
Display messages
Possible causes/consequences and P Solutions
Shift to 'P' or
'N' to Start Engine You hav e attempte d to start th e engin e wit h th e transmissio n in
position R or D . X
Shift th e transmissio n to position P or N .
Apply brake to
deselect Par k (P)
position You hav e attempte d to mov e th e transmissio n selector lever to
position D , R or N without depressin g th e brak e pedal .X
Depress th e brak e pedal .
To shift out of P
or N, depres s
brake and start
engine Wit h th e engin e switched off, you hav e attempte d to shift th e
selector lever out of position P or N into another transmissio n
position . X
Depress th e brak e pedal .X
Start th e engine.320
Display messages
On-board computer and displays