2018 OPEL ASTRA J brakes

Driving and operating173
The minimum indicated distance is
0.5 s.
If there is no vehicle ahead or the vehicle ahead is out of range, two
dashes will be displayed: -.- s.
Active Emergency Braking
Active emergency braking can help to reduce the damage from crashes with vehicles and obstacles directly
ahead, when a collision can no longer be avoided either by manual braking
or by steering. Before the active
emergency braking applies, the driver
is warned by the forward collision
alert 3 169.
The feature uses various inputs (e.g.
radar sensor, brake pressure, vehicle speed) to calculate the probability of
a frontal collision.
Active emergency braking operates automatically above walking speed,
provided that Auto collision
preparation setting is not deactivated
in the vehicle personalisation menu
3 105.
The system includes: ● brake preparation system
● emergency automatic braking
● forward looking brake assist9Warning
This system is not intended to
replace the driver responsibility of driving the vehicle and looking
ahead. Its function is limited to
supplemental use only. The driver shall continue to apply the brake
pedal as the driving situation
dictates.
Brake preparation system
When approaching a vehicle ahead
so quickly that a collision is likely, the
brake preparation system slightly
pressurises the brakes. This reduces
the response time, when a manual or automatic braking is requested.
The brake system is prepared so that braking can occur more rapidly.
Emergency automatic braking
After the brake preparation and just
before the imminent collision, this
function automatically applies limited
braking to reduce the impact speed of the collision.
Forward looking brake assist
In addition to brake preparation
system and emergency automatic
braking, the forward looking brake
assist function makes the brake assist more sensitive. In this way,
depressing the brake pedal slightly
results immediately in a strong
braking. This function helps the driver
brake quicker and stronger before the imminent collision.

174Driving and operating9Warning
Active emergency braking is not
designed to apply strong
autonomous braking or to avoid automatically a collision. It is
designed to reduce the vehicle
speed before collision. It may not
react on stopped vehicles,
pedestrians or animals. After a
sudden lane change, the system
needs a certain time to detect the
next preceding vehicle.
The complete attention of the
driver is always required while
driving. The driver shall always be ready to take action and apply the brakes and steer to avoid
collisions. The system is designed
to work with all occupants wearing their seat belts.
System limitations
The active emergency braking has
limited or no function during rain,
snow or heavy dirt, as the radar
sensor can be covered by a water
film, dust, ice or snow. In case of
sensor blockage, clean the sensor
cover.
In some seldom cases the active
emergency braking system may
provide a short automatic braking in
situations that seem to be
unnecessary, for instance due to
traffic signs in a curve or due to
vehicles in another lane. This is
acceptable operation, the vehicle
does not need service. Firmly apply
the accelerator pedal to override the
automatic braking.
Settings
Settings can be changed in the Auto
collision preparation menu in the
vehicle personalisation, 3 105.
Fault
In the event of a system service
requirement, a message is displayed
in the Driver Information Centre.
If the system does not work as it
should do, vehicle messages are
displayed in the Driver Information
Centre.
Vehicle messages 3 99.

Vehicle care199Vehicle careGeneral Information...................200
Accessories and vehicle modifications .......................... 200
Vehicle storage ........................200
End-of-life vehicle recovery .....201
Vehicle checks ........................... 201
Performing work ......................201
Bonnet ..................................... 201
Engine oil ................................. 202
Engine coolant ......................... 203
Power steering fluid .................204
Washer fluid ............................ 204
Brakes ..................................... 205
Brake fluid ............................... 205
Vehicle battery ......................... 205
Diesel fuel system bleeding .....207
Wiper blade replacement ........207
Bulb replacement .......................208
Halogen headlights ..................208
Adaptive forward lighting .........211
Fog lights ................................. 212
Front turn signal lights .............214
Tail lights ................................. 216
Side turn signal lights ..............219
Number plate light ...................221Interior lights ............................ 221
Instrument panel illumination ...221
Electrical system ........................222
Fuses ....................................... 222
Engine compartment fuse box . 223
Instrument panel fuse box .......225
Load compartment fuse box ....226
Vehicle tools .............................. 227
Tools ........................................ 227
Wheels and tyres .......................229
Winter tyres ............................. 229
Tyre designations ....................229
Tyre pressure .......................... 229
Tyre pressure monitoring system .................................... 231
Tread depth ............................. 234
Changing tyre and wheel size . 234
Wheel covers ........................... 235
Tyre chains .............................. 235
Tyre repair kit .......................... 235
Wheel changing .......................238
Spare wheel ............................ 242
Jump starting ............................. 246
Towing ....................................... 247
Towing the vehicle ...................247
Towing another vehicle ...........248Appearance care .......................249
Exterior care ............................ 249
Interior care ............................. 252

Vehicle care205Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
after a sudden drop in
temperature.
Use of washer fluid containing
isopropanol can damage exterior
lamps.
Washer fluid 3 254.
Brakes In the event of minimum thickness ofthe brake lining, a squealing noise
sounds during braking.
Continued driving is possible but
have the brake lining replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
The brake fluid level must be betweenthe MIN and MAX marks.
If fluid level is below MIN seek the
assistance of a workshop.
Brake and clutch fluid 3 254.
Vehicle battery
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the
battery. Short-distance-driving and
frequent engine starts can discharge
the battery. Avoid the use of
unnecessary electrical consumers.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Laying up the vehicle for more than
four weeks can lead to battery
discharge. Disconnect the clamp from the negative terminal of the vehicle
battery.
Ensure the ignition is switched off
before connecting or disconnecting
the vehicle battery.

288IndexAAccessories and vehicle modifications .......................... 200
Active Emergency Braking .........173
Active head restraints ...................40
Adaptive cruise control .........92, 162
Adaptive forward lighting ....92,
120, 211
Adjustable air vents ...................137
Airbag and belt tensioners ...........87
Airbag deactivation ................54, 87
Airbag system .............................. 51
Air conditioning regular operation ................................ 138
Air conditioning system .............. 130
Air intake .................................... 137
Air vents...................................... 137
Antilock brake system ................ 152
Antilock brake system (ABS) .......89
Anti-theft alarm system ................29
Anti-theft locking system .............. 29
Appearance care ........................249
Armrest ................................... 47, 48
Armrest storage ........................... 62
Ashtrays ....................................... 79
Automatic anti-dazzle ..................33
Automatic light control ...............117
Automatic locking ........................26
Automatic transmission .............147Autostop..................................... 142
Auxiliary heater ........................... 136
B Battery discharge protection ......128
Battery voltage ........................... 102
Belts.............................................. 48 Bonnet ....................................... 201
Brake and clutch fluid .................254
Brake and clutch system .............88
Brake assist ............................... 154
Brake fluid .................................. 205
Brakes ............................... 152, 205
Breakdown.................................. 247
Bulb replacement ....................... 208
C
Capacities .................................. 270
Car Pass ...................................... 23
Catalytic converter .....................147
Central locking system ................24
Centre console lighting ..............127
Centre console storage ...............63
Changing tyre and wheel size ...234
Charging system .......................... 88
Child locks ................................... 26
Child restraint installation locations ................................... 57
Child restraints.............................. 55
Child restraint systems ................55
Cigarette lighter ........................... 79