Lincoln MKZ Owner's Manual page 177

• the vehicle has run out of fuel—the
engine may misfire or run poorly
• poor fuel quality or water in the fuel—the
engine may misfire or run poorly
• the fuel fill inlet may not have closed
properly. See Refueling (page 169).
• driving through deep water—the
electrical system may be wet.
You can correct these temporary
malfunctions by filling the fuel tank with good
quality fuel, properly closing the fuel fill inlet
or letting the electrical system dry out. After
three driving cycles without these or any
other temporary malfunctions present, the
service engine soon indicator should stay off
the next time you start the engine. A driving
cycle consists of a cold engine startup
followed by mixed city/highway driving. No
additional vehicle service is required.
MKZ (CC9) Canada/United States of America, enUSA, Second Printing
Fuel and Refueling
If the service engine soon indicator remains
on, have your vehicle serviced at the first
available opportunity. Although some
malfunctions detected by the OBD-II may not
have symptoms that are apparent, continued
driving with the service engine soon indicator
on can result in increased emissions, lower
fuel economy, reduced engine and
transmission smoothness, and lead to more
costly repairs.
Readiness for Inspection/Maintenance
(I/M) Testing
Some state/provincial and local governments
may have Inspection/Maintenance (I/M)
programs to inspect the emission control
equipment on your vehicle. Failure to pass
this inspection could prevent you from
getting a vehicle registration.
If the service engine soon indicator
is on or the bulb does not work,
you may need to have the vehicle
serviced. See On-Board Diagnostics (OBD-II).
174
Your vehicle may not pass the I/M test if the
service engine soon indicator is on or not
working properly (bulb is burned out), or if
the OBD-II system has determined that some
of the emission control systems have not
been properly checked. In this case, your
vehicle is not ready for I/M testing.
If the vehicle's engine or transmission has
just been serviced, or the battery has
recently run down or been replaced, the
OBD-II system may indicate that the vehicle
is not ready for I/M testing. To determine if
the vehicle is ready for I/M testing, turn the
ignition key to the on position for 15 seconds
without cranking the engine. If the service
engine soon indicator blinks eight times, it
means that the vehicle is not ready for I/M
testing; if the service engine soon indicator
stays on solid, it means that the vehicle is
ready for I/M testing.
The OBD-II system monitors the emission
control system during normal driving. A
complete check may take several days. If the
vehicle is not ready for I/M testing, you may
need to perform the following driving cycle
consisting of mixed city and highway driving: