Kia Optima: Change to "winter weight" oil if
necessary
In some climates it is recommended that a lower viscosity "winter weight" oil be used during cold weather. See section 8 for recommendations. If you aren't sure what weight oil you should use, consult an authorized Kia dealer.
Check battery and cables
Winter puts additional burdens on the
battery system. Visually inspect the battery
and cables as described in section
7. The level of charge in your battery can
be checked by an authorized Kia ...
Check spark plugs and ignition
system
Inspect your spark plugs as described in
section 7 and replace them if necessary.
Also check all ignition wiring and components
to be sure they are not cracked,
worn or damaged in any way. ...
See also:
Removal
1.
Disconnect the negative (-) battery
terminal.
2.
Remove the front wheel guard
clip(2EA).(Refer to the BD group - "Front bumper")
3.
D ...
Power Out Side Mirror Switch. Repair procedures
Inspection
1.
Disconnect the negative (-) battery
terminal.
2.
Remove the front door trim panel.
(Refer to the BD group - "Front door")
3.
...
Active eco system
Active ECO operation
Active ECO helps improve fuel efficiency by controlling the engine and transaxle.
But fuel-efficiency can be changed by the driver's driving habits and road conditions.
...