2018.5 OPEL ASTRA J cruise control

Driving and operating167● There is no traffic and nothingdetected on the road sides for
several minutes. In this case,
there are no radar echoes and
the sensor may report that it is
blocked.
● The collision imminent braking system is applying the brakes.
● The radar sensor is blocked by an ice or water film.
● A fault is detected in the radar, engine or brake system.
When adaptive cruise control is
deactivated automatically, the control
indicator m illuminates white and a
warning symbol is displayed as a pop- up in the Driver Information Centre.
The stored speed is maintained.
9 Warning
When adaptive cruise control is
deactivated, the driver must take
over full brake and engine control.
Switching off
Press C to switch off adaptive cruise
control. The control indicator m
extinguishes. The stored speed is
deleted.
Switching off the ignition also
switches off adaptive cruise control
and deletes the stored speed.
Driver's attention
● Use adaptive cruise control carefully on bends or mountain
roads, as it can lose the vehicle
ahead and need time to detect it
again.
● Do not use the system on slippery roads as it can create
rapid changes in tyre traction
(wheel spinning), so that you
could lose control.
● Do not use adaptive cruise control during rain, snow or
heavy dirt, as the radar sensor
can be covered by a water film,
dust, ice or snow. This reduces or suppresses completely the
visibility. In case of sensor
blockage, clean the sensor
cover.
System limits ● The system's automatic brake force does not permit hard
braking and the braking level
may not be sufficient to avoid a
collision.

168Driving and operating● After a sudden lane change, thesystem needs a certain time todetect the next preceding
vehicle. So if a new vehicle is
detected, the system may
accelerate instead of braking.
● Adaptive cruise control does ignore the oncoming traffic.
● Adaptive cruise control does not brake for stopped vehicles,
pedestrians or animals.
Bends
The adaptive cruise control calculates
a predicted path based on the
centrifugal force. This predicted path
considers the current bend
characteristic, but cannot consider a
future bend change. The system may lose the current vehicle ahead or
consider a vehicle which is not in the
actual lane. This can happen when
entering or exiting a bend or if the
bend gets stronger or weaker. If it no
longer detects any vehicle ahead,
then control indicator A will
extinguish.
If the centrifugal force is too high in a bend, the system slows down the vehicle slightly. This braking level is
not designed to avoid spinning off the bend. The driver is responsible for
reducing the selected speed before
entering a bend and in general to
adapt the speed to the road type and
to existing speed limits.
Motorways
On motorways, adapt the set speed
to the situation and the weather.
Always consider that adaptive cruise
control has a limited visibility range, a
limited braking level and a certain
reaction time to verify if a vehicle is on
the driving path or not. Adaptive
cruise control may not be able to
brake the vehicle in time to avoid a
collision with a much slower vehicle or after a lane change. This is
particularly true if driving fast or if the
visibility is reduced due to weather
conditions.
While entering or exiting a motorway,
adaptive cruise control may lose the
vehicle ahead and accelerate up to
the set speed. For this reason,
decrease the set speed before the
exit or before the entry.
Vehicle path changes
If another vehicle enters your driving
path, adaptive cruise control will first
consider the vehicle when it is
completely in your path. Be ready to
take action and depress the brake
pedal, if you need to brake more
quickly.

Driving and operating169Hill and trailer considerations
System performance on hills and
when towing a trailer depends on your
vehicle speed, vehicle load, traffic
conditions and the road gradient. It
may not detect a vehicle in your path
while driving on hills. On steep hills,
you may have to use the accelerator
pedal to maintain your vehicle speed. When going downhill, especially
when towing a trailer, you may have
to brake to maintain or reduce your
speed.
Note that applying the brake
deactivates the system. It is not
recommended to use adaptive cruise
control on steep hills especially when towing a trailer.
Radar unit
The radar unit is mounted behind the
radiator grille below the brand
emblem.
9 Warning
The radar unit was aligned
carefully during manufacture.
Therefore, after a frontal accident, do not use the system. The front
bumper may appear to be intact,
however the sensor behind can be
out of position and react
incorrectly. After an accident,
consult a workshop to verify and
correct the adaptive cruise control
sensor position.
Settings
Settings can be changed in the Auto
collision preparation menu in the
vehicle personalisation, 3 106.
Fault
If the adaptive cruise control does not
work due to temporary conditions
(e.g. blockage by ice) or if there is a
permanent system error, then a
message is displayed in the Driver
Information Centre.

170Driving and operatingVehicle messages 3 100.
Forward collision alert The forward collision alert can help to
avoid or reduce the harm caused by
front-end crashes.
A vehicle ahead is indicated by a
control indicator A.
If a vehicle directly ahead is
approached too quickly, a warning
chime and alert in the Driver
Information Centre is provided.
A precondition is that forward collision
alert is activated in the vehicle
personalisation menu 3 106 or that it
is not deactivated by pressing V
(depending on the system, see
following).
Depending on the vehicle's
equipment, there are two variants of
the forward collision alert available:
● Forward collision alert based on
radar system
on vehicles equipped with
adaptive cruise control 3 163.
● Forward collision alert based on
front camera system
on vehicles with traditional cruise
control or none 3 160.
Forward collision alert based on
radar system
The system uses the radar sensor
behind the radiator grille to detect a
vehicle directly ahead, in your path,
within a maximum distance of
150 metres.
Activation
Forward collision alert operates
automatically above walking speed,
provided that Auto collision
preparation setting is not deactivated
in the vehicle personalisation menu
3 106.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.

Driving and operating171
Press E; the current setting is shown
in the Driver Information Centre.
Press E again to change the alert
sensitivity. The setting is also displayed in the top line of the Driver
Information Centre.Note that the alert timing sensitivity
setting is shared with the following
distance setting of the adaptive cruise control. So changing the alert timing
sensitivity changes the adaptive
cruise control following distance
setting.
Alerting the driver
A green illuminated vehicle ahead
control indicator A illuminates in the
instrument cluster when the system has detected a vehicle in the driving
path. When the distance to a
preceding moving vehicle gets too
small or when approaching another
vehicle too rapidly and a collision is
imminent, the collision alert symbol
pops-up in the Driver Information
Centre. Simultaneously a warning
chime sounds.
Depress the brake pedal, if it is
required by the situation.

Vehicle care225No.Circuit16Starter17Transmission control module18Heated rear window19Front power windows20Rear power windows21Rear electrical centre22Left high beam (Halogen)23Headlamp washer system24Right low beam (Xenon)25Left low beam (Xenon)26Front fog lights27Diesel fuel heating28Start stop system29Electric parking brake30ABS31Adaptive cruise control32AirbagNo.Circuit33Adaptive forward lighting/Auto‐
matic light control34Exhaust gas recirculation35Exterior mirror/Rain sensor36Climate control37Canister vent solenoid38Vacuum pump39Central control module40Windscreen washer/Rear
window washer system41Right high beam (Halogen)42Radiator fan43Windscreen wiper44Windscreen wiper45Radiator fan46–47Horn48Radiator fanNo.Circuit49Fuel pump50Headlamp levelling/Adaptive
forward lighting51Air shutter52Auxiliary heater/Diesel engine53Transmission control module/
Engine control module54Vacuum pump/Instrument
panel cluster/Heating ventila‐
tion/Air conditioning system
After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunction may occur.

288IndexAAccessories and vehicle modifications .......................... 201
Active Emergency Braking .........174
Active head restraints ...................40
Adaptive cruise control .........93, 163
Adaptive forward lighting ....93,
121, 212
Adjustable air vents ...................138
Airbag and belt tensioners ...........88
Airbag deactivation ................54, 88
Airbag system .............................. 51
Air conditioning regular operation ................................ 139
Air conditioning system .............. 131
Air intake .................................... 138
Air vents...................................... 138
Antilock brake system ................ 153
Antilock brake system (ABS) .......90
Anti-theft alarm system ................29
Anti-theft locking system .............. 29
Appearance care ........................250
Armrest ................................... 47, 48
Armrest storage ........................... 63
Ashtrays ....................................... 80
Automatic anti-dazzle ..................33
Automatic light control ...............118
Automatic locking ........................26
Automatic transmission .............148Autostop..................................... 143
Auxiliary heater ........................... 137
B Battery discharge protection ......129
Battery voltage ........................... 103
Belts.............................................. 48 Bonnet ....................................... 202
Brake and clutch fluid .................255
Brake and clutch system .............89
Brake assist ............................... 155
Brake fluid .................................. 206
Brakes ............................... 153, 206
Breakdown.................................. 248
Bulb replacement ....................... 209
C
Capacities .................................. 269
Car Pass ...................................... 23
Catalytic converter .....................148
Central locking system ................24
Centre console lighting ..............128
Centre console storage ...............64
Changing tyre and wheel size ...235
Charging system .......................... 89
Child locks ................................... 26
Child restraint installation locations ................................... 58
Child restraints.............................. 55
Child restraint systems ................55
Cigarette lighter ........................... 80

289Climate control ............................. 17
Climate control systems .............130
Clock............................................. 78
Code ........................................... 100
Control indicators.......................... 85
Control of the vehicle .................141
Controls ........................................ 74
Convex shape .............................. 31
Coolant and antifreeze ...............255
Cruise control ...................... 93, 160
Cupholders .................................. 61
Curtain airbag system .................. 53
Curve lighting.............................. 121
D Danger, Warnings and Cautions ...4
Daytime running lights ...............121
Declaration of conformity ............276
Diesel fuel system bleeding .......208
Door open .................................... 94
Doors ............................................ 27
Driver assistance systems ..........160
Driver Information Centre .............94
Driving characteristics and towing tips .............................. 195
Driving hints ................................ 141
E Electric adjustment ......................31
Electrical system......................... 223
Electric parking brake ...........89, 154Electric parking brake fault ...........90
Electronic climate control system 133
Electronic driving programmes ..150
Electronic Stability Control.......... 156
Electronic Stability Control and Traction Control system ............91
Electronic Stability Control off....... 91
End-of-life vehicle recovery .......202
Engine compartment fuse box ...224
Engine coolant ........................... 204
Engine coolant temperature gauge ....................................... 84
Engine data ............................... 263
Engine exhaust .......................... 146
Engine identification ...................259
Engine oil ................... 203, 255, 260
Engine oil pressure ......................92
Entry lighting .............................. 128
ERA GLONASS .......................... 114
Event data recorders ..................283
Exhaust filter ......................... 91, 146
Exit lighting ................................ 128
Exterior care .............................. 250
Exterior light ................................. 93
Exterior lighting ....................15, 117
Exterior mirrors ............................. 31
F
Fault ........................................... 151
First aid ......................................... 70First aid kit ................................... 70
Fixed air vents ........................... 138
Fog light ....................................... 93
Fog lights ................................... 213
Folding mirrors ............................. 32
Following distance indication ......173
Forward collision alert................. 170
Front airbag system .....................52
Front fog lights ........................... 125
Front seats.................................... 41
Front storage ................................ 62
Front turn lights .......................... 215
Fuel............................................. 189
Fuel for diesel engines ..............190
Fuel for liquid gas operation .......191
Fuel for petrol engines ...............189
Fuel gauge ................................... 82
Fuel selector ................................ 82
Fuses ......................................... 223
G
Gauges ......................................... 81
General information ...................195
Glass panel .................................. 38
Glovebox ..................................... 61
H Halogen headlights ....................209
Hand brake ......................... 153, 154
Hazard warning flashers ............124
Headlight flash ........................... 119