check engine light OPEL ASTRA GTC 2018 Owners Manual

In brief19Transmission
Manual transmission
Reverse: with the vehicle stationary,
depress clutch pedal, press the
release button on the selector lever
and engage the gear.
If the gear does not engage, set the
lever to neutral, release the clutch
pedal and depress again; then repeat
gear selection.
Manual transmission 3 151.
Automatic transmissionP:parkR:reverseN:neutralD:automatic modeM:manual mode: move selector
lever from D to the left.<:manual mode upshifting]:manual mode downshifting
The selector lever can only be moved
out of P when the ignition is on and
the brake pedal is applied. To engage
P or R, press the release button.
Automatic transmission 3 147.
Starting off
Check before starting off ● Tyre pressure and condition 3 229, 3 271.
● Engine oil level and fluid levels 3 202.
● All windows, mirrors, exterior lighting and number plates are
free from dirt, snow and ice and
are operational.
● Proper position of mirrors, seats, and seat belts 3 31, 3 41,
3 49.
● Brake function at low speed, particularly if the brakes are wet.

Keys, doors and windows31A triggered alarm, which has not been
interrupted by the driver, will be
indicated by the hazard warning
lights. They will flash quickly three
times the next time the vehicle is
unlocked with the radio remote
control. Additionally, a warning
message or a warning code is
displayed in the Driver Information Centre after switching on the ignition.
Vehicle messages 3 99.
If the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must be
deactivated as follows: Switch the
ignition on then off, then disconnect
the vehicle's battery within
15 seconds.
Immobiliser The system is part of the ignition
switch and checks whether the
vehicle is allowed to be started with
the key being used.
The immobiliser is activated
automatically after the key has been removed from the ignition switch.If the control indicator d flashes when
the ignition is on, there is a fault in the
system; the engine cannot be started. Switch off the ignition and repeat the
start attempt.
If the control indicator continues
flashing, attempt to start the engine
using the spare key and seek the
assistance of a workshop.
Note
The immobiliser does not lock the
doors. You should always lock the
vehicle after leaving it and switch on the anti-theft alarm system 3 24,
3 29.
Control indicator d 3 92.Exterior mirrors
Convex shape The convex exterior mirror contains
an aspherical area and reduces blind spots. The shape of the mirror makes
objects appear smaller, which will affect the ability to estimate
distances.
Electric adjustment
Select the relevant exterior mirror by
turning the control to left (L) or right
(R) . Then swivel the control to adjust
the mirror.

82Instruments and controlsEvery six months, run the petrol tank
down until control indicator i
illuminates, then refuel. This helps
maintain fuel quality and system
function for petrol operation.
Fill the tank completely at regular
intervals to prevent corrosion in the
tank.
Faults and remedies
If gas mode is not possible, check the following:
● Is there enough liquid gas present?
● Is there enough petrol present for
starting?
Due to extreme temperatures in
combination with the gas
composition, it may take slightly
longer before the system switches
from petrol to gas mode.
In extreme situations, the system may
also switch back to petrol mode if the
minimum requirements are not
fulfilled. If conditions allow, it might be possible to manually switch back to
liquid gas operation.Seek the assistance of a workshop in
the event of all other faults.Caution
Repairs and adjustments may only be made by trained specialists in
order to maintain the safety and
warranty on the LPG system.
Liquid gas is given a particular odour
(odorised) so that any leaks can be
detected easily.
9 Warning
If you smell gas in the vehicle or in
the immediate vicinity, switch to petrol mode immediately. No
smoking. No naked flames or
ignition sources.
If possible, close the manual shut-off
valve on the multivalve. The
multivalve is located on the liquid gas
tank in the load compartment,
underneath the rear floor cover.
Turn the thumb wheel clockwise.
If no further gas odour is perceptible
when the manual shut-off valve is
closed, the vehicle can be used in
petrol mode. If the gas odour persists, do not start the engine. Have the
cause of the fault remedied by a
workshop.
When using underground car parks,
follow the instructions of the operator
and local laws.
Note
In the event of an accident, switch off
the ignition and lights. Close the
manual shut-off valve on multivalve.
Fuel for liquid gas operation 3 190.

100Instruments and controlsVehicle messages on the
Midlevel-Display
The vehicle messages are displayed
as code numbers.
No.Vehicle message2No radio remote control
detected, depress clutch pedal
to restart4Air conditioning off5Steering wheel is locked6Depress brake pedal to release
electric parking brakeNo.Vehicle message7Turn steering wheel, switch ignition off then on9Turn steering wheel, restart
engine12Vehicle overloaded13Compressor overheated15Centre high-mounted brake
light failure16Brake light failure17Headlight levelling malfunction18Left low beam failure19Rear fog light failure20Right low beam failure21Left sidelight failure22Right sidelight failure23Reversing light failure24Number plate light failure25Left front turn signal failureNo.Vehicle message26Left rear turn signal failure27Right front turn signal failure28Right rear turn signal failure29Check trailer brake light30Check trailer reversing light31Check left trailer turn signal32Check right trailer turn signal33Check trailer rear fog light34Check trailer rear light35Replace battery in radio remote
control48Clean side blind spot alert
system49Lane departure warning
unavailable53Tighten fuel filler cap54Water in diesel fuel filter55Diesel particle filter is full
3 146

112Instruments and controlsThe following functions are available:● Lock or unlock vehicle.
● Honk horn or flash lights.
● Check fuel level, engine oil life and tyre pressure (only with tyre
pressure monitoring system).
● Send navigation destination to the vehicle, if equipped with a
built-in navigation system.
● Locate vehicle on a map.
● Manage Wi-Fi settings.
To operate these functions, download the app from App Store ®
or
Google Play™ Store.
Remote control
If desired, use any phone to call an
advisor, who can remotely operate
specific vehicle functions. Find the
respective OnStar phone number on
our country-specific website.
The following functions are available: ● Lock or unlock vehicle.
● Provide information on the vehicle location.
● Honk horn or flash lights.Stolen vehicle assistance
If the vehicle is stolen, report the theft
to the authorities and request OnStar
stolen vehicle assistance. Use any
phone to call an advisor. Find the
respective OnStar phone number on
our country-specific website.
OnStar can provide support in
locating and recovering the vehicle.Theft alert
When the anti-theft alarm system is
triggered, a notification is sent to
OnStar. You are then informed about
this event by text message or email.Restart prevention
By sending remote signals, OnStar can prevent the vehicle from
restarting once it has been turned off.
On-demand diagnostics
At any time e.g. if the vehicle displays a vehicle message, press Z to
contact an advisor and ask to
complete a real-time diagnostic check
to directly determine the issue.
Depending on the results, the advisor
will provide further support.
Diagnostic report
The vehicle automatically transmits
diagnostic data to OnStar which
sends a monthly email report to you
and your preferred workshop.
Note
The workshop notification function
can be disabled in your account.
The report contains the status of key
operating systems of the vehicle like
engine, transmission, airbags, ABS,
and other major systems. It also
provides information on possible
maintenance items and tyre pressure (only with tyre pressure monitoring
system).
To look at the information in greater
detail, select the link within the email and log in to your account.
Destination download
A desired destination can be directly
downloaded to the navigation system.
Press Z to call an advisor and
describe the destination or point of
interest.

142Driving and operatingAutomatic Starter Control
This function controls the engine
starting procedure. The driver does
not need to hold the key in position 3.
Once applied, the system will go on
starting automatically until the engine
is running. Because of the checking
procedure, the engine starts running
after a short delay.
Possible reasons for a non-starting
engine:
● Clutch pedal not operated (manual transmission).
● Brake pedal not operated or selector lever not in P or N
(automatic transmission).
● Timeout occurred.
Turbo engine warm-up
Upon start-up, engine available
torque may be limited for a short time, especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but
accelerator pedal is released.
Depending on driving conditions, the
overrun cut-off may be deactivated.
Stop-start system The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam. It starts the engine
automatically as soon as the clutch is depressed. A battery sensor ensures
that an Autostop is only performed if
the vehicle battery is sufficiently
charged for a restart.
Activation
The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.Deactivation
Deactivate the stop-start system
manually by pressing eco. The
deactivation is indicated when the
LED in the button extinguishes.
Autostop If the vehicle is at a low speed or at a
standstill, activate an Autostop as
follows:
● Depress the clutch pedal.
● Move the selector lever to neutral.
● Release the clutch pedal.

Driving and operating153Parking brake
Manual parking brake9 Warning
Always apply parking brake firmly
without operating the release
button, and apply as firmly as
possible on a downhill or uphill
slope.
To release the parking brake, pull
the lever up slightly, press the
release button and fully lower the
lever.
To reduce the operating forces of
the parking brake, depress the
brake pedal at the same time.
Control indicator R 3 88.
Electric parking brake
Applying when vehicle is stationary
9 Warning
Pull switch m for approx.
one second, the electric parking
brake operates automatically with
adequate force. For maximum
force, e.g. parking with trailer or on
inclines, pull switch m twice.
The electric parking brake is
applied when control indicator m
illuminates 3 88.
The electric parking brake can always
be activated, even if the ignition is off.
Do not operate electric parking brake
system too often without engine
running, as this will discharge the
vehicle battery.
Before leaving the vehicle, check the electric parking brake status. Control
indicator m 3 88.
Releasing
Switch on ignition. Keep brake pedal
depressed and then push switch m.
Drive away function
Vehicles with manual transmission:
Depressing the clutch pedal and then
slightly releasing the clutch pedal and
slightly depressing the accelerator
pedal releases the electric parking

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 care201End-of-life vehicle recovery
Information on end-of-life vehicle
recovery centres and the recycling of
end-of-life vehicles is available on our website, where legally required. Only
entrust this work to an authorised
recycling centre.
Gas vehicles must be recycled by a
service centre authorised for gas
vehicles.Vehicle checks
Performing work9 Warning
Only perform engine compartment
checks when the ignition is off.
The cooling fan may start
operating even if the ignition is off.
9 Danger
The ignition system and Xenon
headlights use extremely high
voltage. Do not touch.
Bonnet
Opening
Pull the release lever and return it to
its original position.

208Vehicle careBulb replacement
Switch off the ignition and switch off
the relevant switch or close the doors.
Only hold a new bulb at the base. Do not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
Replace headlight bulbs from within
the engine compartment.
Bulb check After a bulb replacement switch on
the ignition, operate and check the
lights.Halogen headlights
4-door notchback
Halogen headlights with separate
bulbs for low beam and high beam.
Low beam (1) outer bulb.
High beam (2) inner bulb.
Sidelight/Daytime running light (3) .
Low beam (1)
1. Rotate the cap (1) anticlockwise
and remove it.