brakes MERCEDES-BENZ GLA-Class 2017 X156 Owner's Manual

Brake assistancesee 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 ............................................ 60
6Index

Driving safetysystems
AB S(Anti-loc kBraking System) ...... .65
ADAPTIVE BRAKE ............................. 73
Adaptive Brake Assist ...................... 68
BAS (Brake Assist System) .............. 66
COLLISION PREVENTION ASSIST
PLUS ................................................ 66
Distance warning function ............... 67
EBD (electronic brake force distri-
bution) ............................................. 72
ESP
®(Electronic Stability Pro-
gram) ............................................... 69
Important safety information ........... 65
Overview .......................................... 65
STEER CONTROL ............................. 73
Driving system
Start-off assist ............................... 194
Driving systems
Active Parking Assist ..................... 203
AMG adaptive sport suspension
system ........................................... 196
ATTENTION ASSIST ........................ 211
Blind Spot Assist ............................ 213
Cruise control ................................ 184
Display message ............................ 253
DISTRONIC PLUS ........................... 186
HOLD function ............................... 193
Lane Keeping Assist ...................... 215
Lane Tracking package .................. 213
PARKTRONIC ................................. 200
RACE START (AMG vehicles) .......... 195
Rear view camera .......................... 208
Driving tips
Automatic transmission ................. 163
Brakes ........................................... 177
Break-in period .............................. 148
Checking brake lining thickness .... 178
DISTRONIC PLUS ........................... 192
Downhill gradient ........................... 177
Drinking and driving ....................... 175
Driving in winter ............................. 179
Driving on flooded roads ................ 179
Driving on sand .............................. 182
Driving on wet roads ...................... 179
Exhaust check ............................... 175
Fuel ................................................ 175
General .......................................... 174
Hydroplaning ................................. 179 Icy road surfaces ........................... 179
Limited braking efficiency on sal-
ted roads ....................................... 177
Off-road driving .............................. 180
Snow chains .................................. 343
The first 1000 miles (1500 km) ..... 148
Tire ruts ......................................... 182
Traveling up
hill ............................... 183
W

et road surface ........................... 177
DSR (Downhill Speed Regulation)
Display message ............................ 253
Function/notes ............................. 197
DVD video
Operating (on-board computer) ..... 225
DYNAMIC SELECT button
Climate control (3-zone automaticclimate control) ............................. 137
Climate control (air-conditioning
system) .......................................... 134
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehi-
cles) .................................................... 157
DYNAMIC SELECT controller
(Mercedes-AMG vehicles) ................. 158
E
EASY-PACK tailgate
see Tailgate
EBD (electronic brake force distri-
bution)
Display message ............................ 238
Function/notes ................................ 72
ECO display
Function/notes ............................. 176
On-board computer ....................... 222
ECO start/stop function
Automatic engine start .................. 154
Automatic engine switch-off .......... 154
Deactivating/activating ................. 155
General information ....................... 154
Important safety notes .................. 153
Introduction ................................... 153
Electronic Stability Program
see ESP
®(Electronic Stability Program)
Electronic Traction System
see ETS/4ETS (Electronic Trac-
tion System)
Index9

Vehicle batterysee Battery (vehicle)
Vehicle data
Roof load (maximum) ..................... 383
Trunk load (maximum) ................... 383
Vehicle data (off-road driving)
Approach/departure angle ............ 384
Maximum gradient climbing abil-
ity .................................................. 384
Vehicle dimensions ........................... 383
Vehicle emergency locking ................ 85
Vehicle identification number
see VIN
Vehicle identification plate .............. 376
Vehicle tool kit .................................. 322
Ventilation
Setting the vents ........................... 144
Video
Operating the DVD ......................... 225
VIN
Seat ............................................... 376
Type plate ...................................... 376
W
Warning and indicator lampsABS ................................................ 269
Brakes ........................................... 268
Check Engine ................................. 275
Coolant .......................................... 275
Distance warning ........................... 277
ESP
®.............................................. 271
ESP®OFF ....................................... 272
Fuel tank ........................................ 275
LIM (DISTRONIC PLUS) .................. 187
Overview .......................................... 32
Reserve fuel ................................... 275
Restraint system ............................ 274
Seat belt ........................................ 266
SPORT handling mode ................... 272
Tire pressure monitor .................... 278
Washer fluid
Display message ............................ 264
Wheel and tire combinations
Tires ............................................... 369
Wheel bolt tightening torque ........... 366
Wheel chock ...................................... 364 Wheels
Changing a wheel .......................... 363
Checking ........................................ 341
Cleaning ......................................... 316
General notes ................................ 367
Important safety notes .................. 340
Information on driving .................... 340
Interchanging/changing ................ 363
Mounting a new wheel ................... 366
Removing a wheel .......................... 366
Storing ........................................... 363
Tightening torque ........................... 366
Wheel size/tire size ....................... 367
Window curtain air bag
Display message ............................ 244
Operation ......................................... 50
Windows
see Side windows
Windshield
Defrosting ...................................... 141
Windshield washer system
Adding washer fluid ....................... 311
Important safety notes .................. 382
Windshield wipers
Display message ............................ 264
Problem (malfunction) ................... 129
Rear window wiper ........................ 126
Replacing the wiper blades ............ 126
Switching on/off ........................... 125
Winter driving
Slippery road surfaces ................... 179
Snow chains .................................. 343
Winter operation
General notes ................................ 342
Winter tires
M+S tires ....................................... 342
Wiper blades
Cleaning ......................................... 317
Important safety notes .................. 126
Replacing (re ar w
indow) ................ 128
Replacing (windshield) ................... 126
Wooden trim (cleaning instruc-
tions) .................................................. 319
Workshop
see Qualified specialist workshop
Index21

Warning and indicator lamps
FunctionPage
:LLow-beam head-
lamps
117
;T Parking lamp118
=KHigh-beam head-
lamps
118
?÷ ESP®271
AElectric parking brake (red)
F(USA only)
!(Canada only)274
B!Electric parking brake
(yellow)
274
CJ Brakes (yellow)268
D·Distance warning277
E#! Turn signals118
F6Restraint system43
GüSeat belt266
FunctionPage
HMSPORT handling
mode (Mercedes-AMG
vehicles)
272
I? Coolant275
JRRear fog lamp118
KNFog lamps117
L;Check Engine275
Mh Tire pressure monitor278
Næ Reserve fuel275
OåESP®OFF271
P!ABS269
QBraking268
$(USA only)
J(Canada only)
32Instrument cluster
At a glance

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-roadterrain is activated automatically once the off-
road program is activated (
Ypage 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
iObserve the "Important safety notes" sec-
tion (
Ypage 65).
GWARNING
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
XKeep 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
iObserve the "Important safety notes" sec-
tion (
Ypage 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:
Rthere is dirt on the sensors or anything else covering the sensors
Rthere is snow or heavy rain
Rthere is interference by other radar sources
Rthere are strong radar reflections, for
example in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
Rnew vehicles or after a service on the COL-
LISION PREVENTION ASSIST PLUS system
Observe the important safety notes in the
"Breaking-in notes" section (
Ypage 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-
66Driving safety systems
Safety

The autonomous braking function:
Rgives the driver more time to react to criti-
cal driving situations
Rcan help the driver to avoid an accident or
Rreduces the effects of an accident
Vehicles without DISTRONIC PLUS: the
autonomous braking function is available in
the following speed ranges:
R4 - 65 mph (7 - 105 km/h) for moving
objects
R4 - 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:
R4 - 124 mph (7 - 200 km/h) for moving
objects
R4 - 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
iObserve the "Important safety notes" sec-
tion (
Ypage 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.
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if:
Ryou release the brake pedal.
Rthere is no longer any danger of a collision.
Rno obstacle is detected in front of your
vehicle.
Adaptive Brake Assist is then deactivated.
Important safety notes
iObserve the "Important safety notes" sec-
tion for driving safety systems (
Ypage 65).
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot 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.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
68Driving 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
iObserve the "Important safety notes" sec-
tion (
Ypage 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)
iObserve the "Important safety notes" sec-
tion (
Ypage 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 (
Ypage 199).
Important safety notes
iObserve the "Important safety notes" sec-
tion (
Ypage 65).
GWARNING
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
®
(Ypage 335).
If the å ESP
®OFF warning lamp lights up
continuously, ESP®is deactivated.
If the ÷ ESP
®warning lamp and the å
warning lamp are lit continuously, ESP®is not
available due to a malfunction.
Observe the information on warning lamps
(
Ypage 271) and display messages which
may be shown in the instrument cluster
(
Ypage 236).
Only use wheels with the recommended tire
sizes. Only then will ESP
®function properly.
Characteristics of ESP®
General information
If the ÷ ESP
®warning lamp goes out
before beginning the journey, ESP®is auto-
matically active.
If ESP
®intervenes, the ÷ESP®warning
lamp flashes in the instrument cluster.
Driving safety systems69
Safety
Z

General notes
:ECO start/stop display
The ECO start/stop function is activated
whenever you start the engine using the
SmartKey or the Start/Stop button.
If the engine has been switched off automat-
ically by the ECO start/stop function, the
è ECO symbol is shown in the multifunc-
tion display.
Mercedes-AMG vehicles: the ECO start/
stop function is only available in drive pro-
gram C.
Automatic engine switch-off
If the vehicle is braked to a standstill in Dor N,
the ECO start/stop function switches off the
engine automatically.
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green.
Rthe off-road program is deactivated.
Rthe outside temperature is within the range that is suitable for the system.
Rthe engine is at normal operating temper-
ature.
Rthe set temperature for the vehicle interior
has been reached.
Rthe battery is sufficiently charged.
Rthe system detects that the windshield is
not fogged up when the air-conditioning
system is switched on.
Rthe hood is closed.
Rthe driver's door is closed and the driver's
seat belt is fastened.
All of the vehicle's systems remain active
when the engine is stopped automatically. The HOLD function can also be activated if the
engine has been switched off automatically. It
is then not necessary to continue applying the
brakes during the automatic stop phase.
When you depress the accelerator pedal, the
engine starts automatically and the braking
effect of the HOLD function is deactivated.
Automatic engine switch-off can take place a
maximum of four times in a row (initial stop,
then three subsequent stops)..
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function
by pressing the ECO button
Rin transmission position Dor Nthe brake
pedal is released and the HOLD function is
not active
Ryou depress the accelerator pedal
Ryou engage reverse gear R
Ryou move the transmission out of position
P
Ryou activate the off-road program
Ryou unfasten your seat belt or open the
driver's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe battery's condition of charge is too low
Shifting the transmission to position Pdoes
not start the engine.
154Driving
Driving and parking

ANeutral
Do not shift the transmission toN
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brakes 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 N
if the vehicle is in danger of skid-
ding, e.g. on icy roads.
If you switch the engine off with the
transmission in position Ror D, the
automatic transmission shifts to N
automatically.
!Rolling in neutral Ncan damage
the drive train.
7Drive
The automatic transmission
changes gear automatically. All
forward gears are available.
Driving tips
Changing gear
The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position D. This automatic gear shift-
ing behavior is determined by:
Rthe selected drive program
Rthe position of the accelerator pedal
Rthe road speed
Accelerator pedal position
Your style of driving influences how the auto- matic transmission shifts gear:
Rlittle throttle: early upshifts
Rmore throttle: late upshifts
Holding the vehicle stationary on uphill
gradients
GWARNING
If the clutch overheats, the electronic man-
agement system is automatically deactivated. This interrupts the power transmission. The
vehicle may, for example, roll backwards on
gradients. There is a risk of an accident.
Never hold the vehicle stationary on uphill
gradients by depressing the accelerator.
The clutch may overheat if you hold the vehi-
cle stationary on uphill gradients by depress-ing the accelerator pedal. If the clutch over-
heats, a warning tone sounds.
All vehicles (except Mercedes-AMG vehi-
cles): theStop Vehicle Shift to P
Leave Engine Runningdisplay message
appears in the multifunction display. You will
only be able to continue your journey once the
clutch has cooled down and the display mes-
sage in the multifunction display has disap-
peared.
Mercedes-AMG vehicles: theTrans. Oil
Overheated Drive on with Caredisplay
message appears in the multifunction dis-
play.
Do not hold the vehicle stationary on uphill
gradients by depressing the accelerator
pedal. Instead, only ever hold the vehicle sta-
tionary on uphill gradients by:
Rdepressing the brake pedal
Ractivating the HOLD function
Rengaging the electric parking brake
Kickdown
Use kickdown for maximum acceleration.
XDepress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a
lower gear depending on the engine speed.
XEase off the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts back up.
Automatic transmission163
Driving an d parking
Z

ECO display
The ECO display provides feedback on how
economical your driving characteristics are.
The ECO display assists you in achieving the
most economical driving style for the selec-
ted settings and prevailing conditions. Your
driving style can significantly influence the
vehicle's consumption.
The ECO display consists of three bars:
RAcceleration
RConstant
RCoasting
The percent value is the average value of the
three bars. The three bars and the mean value
begin at the value of 50%. A higher percent-
age indicates a more economical driving
style.
The ECO display does not indicate the actual
fuel consumption. A fixed percentage count
in the ECO display does not indicate a fixed
consumption.
Apart from driving style, consumption is
dependent on many factors such as, e.g.:
Rload
RTire pressure
Rcold start
Rchoice of route
Relectrical consumers switched on
These factors are not included in the ECO dis-
play.
The evaluation of your driving style is carried out using the following three categories:
RAcceleration(evaluation of all accelera-
tion processes):
-The bar fills up: moderate acceleration,
especially at higher speeds
-The bar empties: sporty acceleration
RConstant(assessment of driving behavior
at all times)
-The bar fills up: constant speed and
avoidance of unnecessary acceleration
and deceleration
-The bar empties: fluctuations in speed
RCoasting(assessment of all deceleration
processes)
-The bar fills up: anticipatory driving,
keeping your distance and early release
of the accelerator. The vehicle can coast
without use of the brakes.
-The bar empties: frequent braking
An economical driving style specially requires driving at moderate engine speeds.
To achieve a higher value in the categories
Acceleration
and Constant:
Robserve the gearshift recommendations.
Rdrive the vehicle in drive program Cor E
(vehicles with a DYNAMIC SELECT button).
On long journeys at a constant speed, e.g. on
the highway, only the bar for Constant
will
change.
The ECO display summarizes the driving char-
acteristics from the start of the journey to its
completion. For this reason, the bars change
dynamically at the beginning of the journey.
On longer journeys, there are fewer changes.
For more dynamic changes, carry out a man-
ual reset.
For further information on the ECO display,
see (
Ypage 222).
176Driving tips
Driving and parking