Honda 2013 Civic CNG Owner's Manual page 12

When Driving
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Starting the Engine
3. Turn the ignition switch to ON
depressing the accelerator pedal.
You may hear a click from the in-tank fuel
shut-off valve.
4. Turn the ignition switch to START III
without depressing the accelerator pedal.
Starting the Engine
II without
Do not hold the key in START
seconds.
• If the engine does not start right away, wait for at
least 10 seconds before trying again.
• If the engine starts, but then immediately stops,
wait at least 10 seconds before repeating step
4 while gently depressing the accelerator pedal.
Release the accelerator pedal once the engine
starts.
The immobilizer system protects your vehicle from
theft. If an improperly coded key (or other device) is
used, the engine's fuel system is disabled.
Immobilizer System
Î
After extended storage: If you ever parked your
vehicle for an extended period, open the trunk for
several minutes before starting the engine to allow
any natural gas vapors that may have accumulated
to dissipate.
III
for more than 15
P. 112, Owner's Manual