brake sensor MERCEDES-BENZ GLA 2016 Owners Manual

Brake assistance
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 242
Notes ............................................. 380
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Changing bulbs .............................. 124
Display message ............................ 248
Brakes
ABS .................................................. 65
Adaptive Brake Assist ...................... 68
BAS .................................................. 66
Brake fluid (notes) ......................... 380
Display message ............................ 236
EBD .................................................. 72
Hill start assist ............................... 153
HOLD function ............................... 193
Important safety notes .................. 177
Maintenance .................................. 178
Parking brake ................................ 173
Riding tips ...................................... 177
Warning lamp ................................. 268
Breakdown
Where will I find...? ........................ 322
see Flat tire
see Tow-starting
see Towing away
Brightness control (instrument
cluster lighting) ................................... 31
Buttons on the steering wheel ......... 219
C
Calling up a malfunction
see Display messages
Car
see Vehicle
Care
Car wash ........................................ 314
Carpets .......................................... 320
Display ........................................... 318
Exhaust pipe .................................. 318
Exterior lights ................................ 317
Gear or selector lever .................... 319
Interior ........................................... 318 Matte finish ................................... 316
Notes ............................................. 313
Paint .............................................. 315
Plastic trim .................................... 318
Power washer ................................ 315
Rear view camera .......................... 318
Roof lining ...................................... 320
Seat belt ........................................ 320
Seat cover ..................................... 319
Sensors ......................................... 317
Steering wheel ............................... 319
Trim pieces .................................... 319
Washing by hand ........................... 314
Wheels ........................................... 316
Windows ........................................ 316
Wiper blades .................................. 317
Wooden trim .................................. 319
Cargo compartment enlargement ... 284
Cargo compartment floor
Important safety notes .................. 287
Opening/closing ............................ 287
Stowage well (under) ..................... 287
Cargo net
Attaching ....................................... 286
Important safety information ......... 286
Cargo tie down rings ......................... 285
CD player (on-board computer) ........ 225
Center console
Lower section .................................. 36
Upper section .................................. 35
Central locking
Automatic locking (on-board com-
puter) ............................................. 230
Locking/unlocking (SmartKey) ........ 76
Changing bulbs
Brake lamps ................................... 124
Cornering light function ................. 123
High-beam headlamps ................... 123
Low-beam headlamps .................... 123
Rear fog lamp ................................ 124
Turn signals (front) ......................... 123
Turn signals (rear) .......................... 124
Child
Restraint system .............................. 59
Child seat
Forward-facing restraint system ...... 63
LATCH-type (ISOFIX) child seat
anchors ............................................ 606
Index

Position of exterior mirror, front-
passenger side .............................. .1 11
Rear view camera .......................... 208
see Active Parking Assist
see PARKTRONIC
Parking aid
Active Parking Assist ..................... 203
see Exterior mirrors
see PARKTRONIC
Parking assistance
see PARKTRONIC
Parking brake
Display message ............................ 239
Electric parking brake .................... 173
Warning lamp ................................. 274
Parking lamps
Switching on/off ........................... 118
PARKTRONIC
Deactivating/activating ................. 202
Driving system ............................... 200
Function/notes ............................ .2 00
Important safety notes .................. 200
Problem (malfunction) ................... 203
Range of the sensors ..................... 201
Warning display ............................. 202
PASSENGER AIR BAG
Display message ............................ 246
Indicator lamps ................................ 43
Problem (malfunction) ................... 246
Pets in the vehicle ............................... 64
Plastic trim (cleaning instruc-
tions) .................................................. 318
Power washers .................................. 315
Power windows
see Side windows
Protection against theft
ATA (Anti-Theft Alarm system) ......... 73
Immobilizer ...................................... 73
Protection of the environment
General notes .................................. 23
Pulling away
Automatic transmission ................. 152
General notes ................................ 152
Hill start assist ............................... 153 Q QR code
Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 26
Qualified specialist workshop ........... 25
R RACE START
Important safety notes .................. 195
RACE START (AMG vehicles) ............. 195
RACETIMER (on-board computer) .... 232
Radio
Selecting a station ......................... 225
see separate operating instructions
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 25
Rain closing feature (panorama
roof with power tilt/sliding panel) .... 96
Reading lamp ..................................... 120
Rear compartment
Setting the air vents ...................... 145
Rear fog lamp
Changing bulbs .............................. 124
Display message ............................ 249
Switching on/off ........................... 118
Rear lamps
see Lights
Rear seat
Adjusting the angle of the backr-
ests ................................................ 285
Rear seats
Folding the backrest forwards/
back ............................................... 284
Rear view camera
Cleaning instructions ..................... 318
Displays in the Audio display ......... 208
Displays in the COMAND display ... 208
Function/notes ............................. 208
Switching on/off ........................... 208
Rear window defroster
Problem (malfunction) ................... 143
Switching on/off ........................... 142
Rear window wiper
Replacing the wiper blade .............. 128
Switching on/off ........................... 126 Index 15

Rear-view mirror
Anti-glare (manual) ........................ 109
Dipping (automatic) ....................... 110
Recycling
see Protection of the environment
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 382
Refueling
Fuel gauge ....................................... 31
Important safety notes .................. 169
Refueling process .......................... 170
see Fuel
Remote control
Garage door opener ....................... 300
Programming (garage door
opener) .......................................... 301
Replacing bulbs
Important safety notes .................. 121
Overview of bulb types .................. 122
Removing/replacing the cover
(front wheel arch) .......................... 122
Rescue card ......................................... 26
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 252
Warning lamp ................................. 275
see Fuel
Residual heat (climate control) ........ 143
Restraint system
Display message ............................ 243
Introduction ..................................... 42
Warning lamp ................................. 274
Warning lamp (function) ................... 43
Reverse gear (selector lever) ........... 161
Reversing feature
Panorama sliding sunroof ................ 95
Roller sunblind ................................. 97
Side windows ................................... 90
Tailgate ............................................ 86
Roadside Assistance (breakdown) .... 24
Roller sunblind
Panorama roof with power tilt/
sliding panel ..................................... 96
Roof carrier ........................................ 288 Roof lining and carpets (cleaning
guidelines) ......................................... 320
Roof load (maximum) ........................ 383
S Safety
Children in the vehicle ..................... 58
Safety system
see Driving safety systems
Seat belts
Adjusting the height ......................... 46
Cleaning ......................................... 320
Correct usage .................................. 46
Fastening ......................................... 46
Important safety guidelines ............. 44
Introduction ..................................... 44
Releasing ......................................... 47
Warning lamp ................................. 266
Warning lamp (function) ................... 47
Seats
Adjusting (electrically) ................... 105
Adjusting (manually) ...................... 104
Adjusting (Performance Seat) ........ 106
Adjusting the 4-way lumbar sup-
port ................................................ 106
Adjusting the head restraint .......... 105
Cleaning the cover ......................... 319
Correct driver's seat position ........ 102
Folding the backrest (rear com-
partment) forwards/back .............. 284
Important safety notes .................. 103
Seat heating problem .................... 108
Storing settings (memory func-
tion) ............................................... 112
Switching seat heating on/off ....... 107
Securing cargo .................................. 285
Selecting a gear
see Automatic transmission
Selector lever
Cleaning ......................................... 319
Sensors (cleaning instructions) ....... 317
Service menu (on-board com-
puter) .................................................. 229
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 38016
Index

The pulsating brake pedal can be an indica-
tion of hazardous road conditions, and func-
tions as a reminder to take extra care while
driving.
Off-road ABS An ABS system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated ( Y
page 199).
At speeds below 20 mph (30 km/h), the front
wheels lock cyclically during braking. The dig-
ging-in effect achieved in the process reduces
the stopping distance on off-road terrain. This
limits steering capability.
BAS (Brake Assist System)
General information BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 65).
G WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking X
Keep the brake pedal firmly depressed until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. COLLISION PREVENTION ASSIST
PLUS
General information
i Observe the "Important safety notes" sec-
tion ( Y
page 65).
COLLISION PREVENTION ASSIST PLUS con-
sists of a distance warning function with an
autonomous braking function and adaptive
Brake Assist.
COLLISION PREVENTION ASSIST PLUS can
help you to minimize the risk of a front-end
collision with a vehicle ahead or reduce the
effects of such a collision.
If COLLISION PREVENTION ASSIST PLUS
detects that there is a risk of a collision, you
will be warned visually and acoustically. If you
do not react to the visual and audible collision
warning, autonomous braking can be initiated
in critical situations. If you apply the brake
yourself in a critical situation, the COLLISION
PREVENTION ASSIST PLUS adaptive Brake
Assist assists you.
Important safety notes
Detection of hazardous situations can be par-
ticularly impaired by: R
there is dirt on the sensors or anything else
covering the sensors R
there is snow or heavy rain R
there is interference by other radar sources R
there are strong radar reflections, for
example in parking garages R
a narrow vehicle traveling in front, e.g. a
motorbike R
a vehicle traveling in front on a different line R
new vehicles or after a service on the COL-
LISION PREVENTION ASSIST PLUS system
Observe the important safety notes in the
"Breaking-in notes" section ( Y
page 148).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-66
Driving safety systems
Safety

The autonomous braking function: R
gives the driver more time to react to criti-
cal driving situations R
can help the driver to avoid an accident or R
reduces the effects of an accident
Vehicles without DISTRONIC PLUS: the
autonomous braking function is available in
the following speed ranges: R
4 - 65 mph (7 - 105 km/ h) for moving
objects R
4 - 31 mph (7 - 50 km/h) for stationary
objects
Vehicles with DISTRONIC PLUS: the auton-
omous braking function is available in the fol-
lowing speed ranges: R
4 - 124 mph (7 - 200 km/h) for moving
objects R
4 - 31 mph (7 - 50 km/h) for stationary
objects
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause the Autonomous Brak-
ing Function to intervene.
Adaptive Brake Assist
General information
i Observe the "Important safety notes" sec-
tion ( Y
page 65).
With the help of adaptive Brake Assist, the
distance warning signal can detect obstacles
that are in the path of your vehicle for an
extended period of time.
If adaptive Brake Assist detects a risk of col-
lision with the vehicle in front, it calculates
the braking force necessary to avoid a colli-
sion. If you apply the brakes forcefully, adap-
tive Brake Assist will automatically increase
the braking force to a level suitable for the
traffic conditions.
Adaptive Brake Assist provides braking assis-
tance in hazardous situations at speeds
above 4 mph (7 km/h). It uses radar sensor
technology to assess the traffic situation. Up to a speed of approximately 155 mph
(250 km/h), adaptive Brake Assist is capable
of reacting to moving objects that have
already been detected as such at least once
over the period of observation.
Up to a speed of approximately 44 mph
(70 km/h), adaptive Brake Assist reacts to
stationary obstacles. X
Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if: R
you release the brake pedal. R
there is no longer any danger of a collision. R
no obstacle is detected in front of your
vehicle.
Adaptive Brake Assist is then deactivated.
Important safety notes
i Observe the "Important safety notes" sec-
tion for driving safety systems ( Y
page 65).
G WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can: R
intervene unnecessarily R
not intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
G WARNING
Adaptive Brake Assist does not react: R
to people or animals R
to oncoming vehicles R
to crossing traffic R
when cornering
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.68
Driving safety systems
Safety

Always pay careful attention to the traffic sit-
uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause Brake Assist to inter-
vene.
If adaptive Brake Assist is not available due to
a malfunction in the radar sensor system, the
brake system remains available with full
brake boosting effect and BAS.
ESP ®
(Electronic Stability Program)
General notes
i Observe the "Important safety notes" sec-
tion ( Y
page 65).
ESP ®
monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilize the vehicle during braking.
ETS/4ETS (Electronic Traction System)
i Observe the "Important safety notes" sec-
tion ( Y
page 65).
ETS traction control is part of ESP ®
. On vehi-
cles with 4MATIC, 4ETS is part of ESP ®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ®
. Off-road 4ETS (Electronic Traction Sys-
tem) A 4ETS system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated ( Y
page 199).
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 65).
G WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further driv-
ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
Vehicles without 4MATIC: when towing
your vehicle with the front axle raised, it is
important that you observe the notes on ESP ®
( Y
page 335).
If the

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 25).
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

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 to avoid exceeding the set
speed or to maintain the designated distance
from the vehicle in front.
Change into a lower gear in good time on long
and steep downhill gradients. This is espe-
cially important if the vehicle is laden. 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.
DISTRONIC PLUS operates in range between
0 mph (0 km/h) and 120 mph (200 km/h).
Do not use DISTRONIC PLUS while driving on
roads with steep gradients. 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 50% of the maximum possible deceleration.
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.186
Driving systems
Driving and parking

Displaying the assistance graphic X
Select the Assistance Graphic function
using the on-board computer
( Y
page 227).
When the off-road program is activated,
symbol C appears in the assistance
graphic display.
Driving dynamics display (vehicles
with Off-Road Engineering package)
General notes The driving dynamics display allows you to
see the selected drive program and additional
information about the vehicle's operating sta-
tus in the Audio 20 or COMAND display.
Vehicles with Audio 20: R
Drive program selected R
Angle of inclination R
Steering angle R
Uphill or downhill gradient in percentage R
DSR status indicator
Vehicles with COMAND: R
Drive program selected R
Accelerator pedal position shown in % R
Brake pedal position shown in % R
Angle of inclination R
Steering angle R
Uphill or downhill gradient in percentage R
Level control R
Compass with angle scale R
DSR status indicator Activating the driving dynamics display X
Switch on Audio 20 or COMAND; see the
separate Audio 20 or COMAND operating
instructions. X
Press button C .
The driving dynamics display appears in the
Audio 20 or COMAND display.
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 six 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.200
Driving system s
Dr ivi ng an d parking

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
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 317). Range
Front sensors
Center Approx. 40 in (approx.
100 cm)
Corners Approx. 24 in (approx.
60 cm)
Rear sensors
Center Approx. 48 in (approx.
120 cm)
Corners Approx. 32 in (approx.
80 cm)
Minimum distance
Center Approx. 8 in (approx.
20 cm)
Corners Approx. 6 in (approx.
15 cm)
If there is an obstacle within this range, the
relevant warning displays light up and a warn-
ing tone sounds. If the distance falls below
the minimum, the distance may no longer be
shown. Driving systems 201
Driving and parking Z