Opel 2010 Astra H Owner's Manual page 133

Ignition switch positions
0 = Ignition off
1 = Steering wheel lock released,
ignition off
2 = Ignition on, for diesel engine:
preheating
3 = Starting
Starting the engine
Starting engine with ignition
switch
Operate clutch and brake, automatic
transmission in P or N, do not
accelerate; for diesel engines, turn
the key to position 2 for preheating
until control indicator ! goes out;
turn key briefly to position 3 and
release key when engine is running.
Before restarting or to switch off the
engine, turn key back to 0.
Driving and operating
Starting engine with the
Start/Stop button
The electronic key must be inside the
vehicle. Operate clutch and brake,
automatic transmission in P or N, do
not accelerate, for diesel engines,
press the button briefly to start
preheating, move the steering wheel
slightly to release the steering wheel
lock, wait until control indicator !
goes out and then press button for
1 second and release when the
engine is running.
To repeat the starting procedure or to
switch off the engine, press the button
again.
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