cruise control OPEL ASTRA J 2014 Manual user

188Driving and operating
Once the system is activated,
adaptive cruise control decelerates or
brakes if it detects a vehicle ahead,
which is slower or closer than the
desired following distance.9 Warning
Accelerating by the driver
deactivates automatic braking by
the system. This is indicated as a
pop-up warning in the Driver
Information Centre.
Increase speed
With adaptive cruise control active,
hold thumb wheel turned to RES/+:
speed increases continuously in large increments, or activate repeatedly
RES/+ : speed increases in small
increments.
If the vehicle is driven with adaptive cruise control active much faster than
the desired speed, e.g. after
depressing the accelerator pedal,
then the current speed can be stored and maintained by turning the thumb
wheel to SET/-.
Reduce speed
With adaptive cruise control active,
hold thumb wheel turned to SET/-:
speed decreases continuously in
large increments, or activate
repeatedly SET/-: speed decreases in
small increments.
If the vehicle is driven with adaptive
cruise control active much slower
than the desired speed, e.g. because
of a slower vehicle ahead, then the
current speed can be stored and
maintained by turning the thumb
wheel to SET/-.
Resume stored speed If the system is switched on but
inactive, then turn thumb wheel to
RES/+ at a speed above 50 km/h to
resume the stored speed.
Setting the following distance
When adaptive cruise control detects a slower moving vehicle in the driving
path, it will adjust the vehicle speed to maintain the following distance
selected by the driver.The following distance can be set to
near, medium or far.
Press button E; the current setting is
shown on the Driver Information
Centre. Press button E again to
change the following distance. The
setting is also displayed in the top line
of the Driver Information Centre.

Driving and operating189
The selected following distance is
indicated by filled distance bars in the
adaptive cruise control page.
Note that the following distance
setting is shared with the sensitivity
setting of forward collision alert.
Example: If setting 3 (far) is selected,
then the driver is warned sooner
before a possible collision, also if
adaptive cruise control is inactive or
switched off.
9 Warning
The driver accepts full
responsibility for the appropriate
following distance based on traffic, weather and visibility conditions.
Following distance must be
adjusted or the system switched
off when required by the prevailing
conditions.
Detecting the vehicle ahead
The green illuminated vehicle ahead
control indicator A is displayed in the
speedometer when the system
detects a vehicle in the driving path.
If this symbol does not display, or
displays briefly, adaptive cruise
control will not respond to vehicles
ahead.
Deactivation Adaptive cruise control is deactivated
by the driver when:
■ button y is pressed,
■ brake pedal is applied,
■ clutch pedal is depressed for more than four seconds,
■ gear selector lever of automatic transmission is moved to N.
The system is also automatically
deactivated when:
■ vehicle speed slows down below 45 km/h or accelerates above
190 km/h,
■ Traction Control system is operating for more than
20 seconds,

190Driving and operating
■ Electronic Stability Control isoperating,
■ there is no traffic and nothing detected on the road sides for
several minutes. In this case there are no radar echoes and the sensor may report that it is blocked,
■ collision imminent braking is applying the brakes,
■ radar sensor is blocked by an ice or
water film,
■ 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 button 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.
■ After a sudden lane change, the system needs a certain time todetect the next preceding vehicle.

Driving and operating191
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.

192Driving and operating
Hill 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, 3 134.
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.

Driving and operating193
Vehicle messages 3 128.
Forward collision alert The forward collision alert can help to
avoid or reduce the harm caused by
front-end crashes. If a vehicle directly
ahead is approached too quickly, a
warning chime and alert in the Driver
Information Centre is provided.
The green illuminated vehicle ahead
symbol A appears in the
speedometer when the system has
detected a vehicle in the driving path. A precondition is that forward collision
alert is activated in the vehicle
personalisation menu 3 134 or that it
is not deactivated by the button 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 3 186.
■ Forward collision alert based on
front camera system
on vehicles with traditional cruise
control or none 3 183.
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 collisionpreparation setting is not deactivated
in the vehicle personalisation menu
3 134.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.
Press button E; the current setting is
shown on the Driver Information
Centre. Press button E again to
change the alert sensitivity. The
setting is also displayed in the top line
of the Driver Information Centre.

194Driving and operating
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
When approaching another vehicle
too rapidly, the collision alert warning page will be indicated in the Driver
Information Centre. Simultaneously a
warning chime sounds. Depress the
brake pedal, if it is required by the situation.
SettingsSettings can be changed in the Auto
collision preparation menu in the
vehicle personalisation 3 134.
Forward collision alert based on
front camera system
Forward collision alert uses the front
camera system in the windscreen to
detect a vehicle directly ahead, in
your path, within a distance of approx.
60 metres.
Activation
Forward collision alert operates
automatically above 40 km/h, if it is
not deactivated by button V, see
below.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.

254Vehicle care
No.Circuit15Engine control module16Starter17Transmission 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 controlNo.Circuit32Airbag33Adaptive 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–No.Circuit47Horn48Radiator fan49Fuel 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.

324IndexAAccessories and vehicle modifications .......................... 224
Active Emergency Braking .........196
Active head restraints ...................41
Adaptive cruise control .......121, 186
Adaptive forward lighting ..........
................................ 120, 145, 236
Adjustable air vents ...................162
Advanced parking assist ............201
Airbag and belt tensioners .........115
Airbag deactivation ..............55, 115
Airbag system .............................. 52
Air conditioning regular operation ................................ 163
Air conditioning system .............. 156
Air intake .................................... 163
Air vents...................................... 162
Antilock brake system ................ 175
Antilock brake system (ABS) .....117
Anti-theft alarm system ................30
Anti-theft locking system .............. 30
Appearance care ........................280
Armrest ................................... 48, 49
Armrest storage ........................... 64
Ashtrays ..................................... 109
Automatic anti-dazzle ..................34
Automatic light control ...............143
Automatic locking ........................27Automatic transmission .............171
Auxiliary heater ........................... 162
B Battery discharge protection ......153
Battery voltage ........................... 131
Belts.............................................. 49 Bicycle rack .................................. 66
Bonnet ....................................... 226
Brake and clutch fluid .................285
Brake and clutch system ...........116
Brake assist ............................... 178
Brake fluid .................................. 229
Brakes ............................... 175, 229
Breakdown.................................. 278
Bulb replacement ....................... 232
C
Capacities .................................. 308
Cargo management system ........93
Car Pass ...................................... 23
Catalytic converter .....................171
Central locking system ................25
Centre console lighting ..............152
Centre console storage ...............65
Changing tyre and wheel size ...264
Charging system ........................ 116
Child locks ................................... 27
Child restraint installation locations ................................... 58

325
Child restraints.............................. 56
Child restraint systems ................56
Cigarette lighter .........................109
Climate control ............................. 19
Climate control systems .............155
Clock........................................... 107
Code ........................................... 128
Control indicators........................ 113
Control of the vehicle .................164
Controls ...................................... 102
Convex shape .............................. 33
Coolant and antifreeze ...............285
Cruise control ....................121, 183
Cupholders .................................. 62
Curtain airbag system .................. 54
Curve lighting.............................. 145
D Danger, Warnings and Cautions ...4
Daytime running lights ...............145
Declaration of conformity ............321
Diesel fuel system bleeding .......231
Diesel particle filter .............119, 170
Door open .................................. 121
Doors ............................................ 28
Driver assistance systems ..........183
Driver Information Centre ...........121
Driving characteristics and towing tips .............................. 220
Driving hints ................................ 164E
Electric adjustment ......................33
Electrical system......................... 252
Electric parking brake .................117
Electric parking brake fault .........117
Electronic climate control system 158
Electronic driving programmes ..173
Electronic Stability Control.......... 179
Electronic Stability Control and Traction Control system ..........118
Electronic Stability Control off..... 118
End-of-life vehicle recovery .......225
Engine compartment fuse box ...253
Engine coolant ........................... 227
Engine coolant temperature gauge ..................................... 111
Engine data ............................... 292
Engine exhaust .......................... 170
Engine identification ...................288
Engine oil ................... 226, 285, 289
Engine oil pressure ....................119
Entry lighting .............................. 152
Event data recorders ..................321
Exit lighting ................................ 153
Exterior care .............................. 280
Exterior light ............................... 120
Exterior lighting ....................16, 142
Exterior mirrors ............................. 33F
Fault ........................................... 173
First aid ......................................... 97
First aid kit ................................... 97
Fixed air vents ........................... 163
Flex-Fix system ............................ 66
Fog light ..................................... 120
Fog lights ................................... 237
Folding mirrors ............................. 33
Following distance indication ......196
Forward collision alert................. 193
Front airbag system .....................53
Front fog lights ........................... 149
Front seats.................................... 42
Front storage ................................ 63
Front turn signal lights ...............239
Fuel............................................. 213
Fuel consumption - CO 2-
Emissions ............................... 219
Fuel for diesel engines ..............213
Fuel for liquid gas operation .......213
Fuel for petrol engines ...............213
Fuel gauge ................................. 111 Fuel selector .............................. 111
Fuses ......................................... 252
G
Gauges ....................................... 110
General information ...................219