2020 KIA OPTIMA PHEV check engine

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KIA OPTIMA PHEV 2020  Owners Manual Maintenance
7
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Maintenance services . . . . . . . . . . . . . . . . . . . . . . . . 7-4
• Owner’s responsibility . . . . . . .

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KIA OPTIMA PHEV 2020  Owners Manual Maintenance
67
OWNER MAINTENANCE 
The following lists are vehicle checks
and inspections that should be per-
formed by the owner or an author-
ized Kia dealer at the frequencies
indicated to help ensu

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KIA OPTIMA PHEV 2020  Owners Manual 77
Maintenance
At least monthly:
 Check the coolant level in theengine coolant reservoir.
 Check the operation of all exterior lights, including the stoplights, turn
signals and hazard warning flash-

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KIA OPTIMA PHEV 2020  Owners Manual Maintenance
14
7
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the
vehicle is

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KIA OPTIMA PHEV 2020  Owners Manual 715
Maintenance
Air cleaner filter
A Genuine Kia air cleaner filter is
recommended when the filter is
replaced.
Spark plugs
Make sure to install new spark plugs
of the correct heat range.
Cooling syst

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KIA OPTIMA PHEV 2020  Owners Manual 717
Maintenance
Exhaust pipe and muffler
Visually inspect the exhaust pipes,
muffler and hangers for cracks, dete-
rioration, or damage. Start the
engine and listen carefully for any
exhaust gas leaka

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KIA OPTIMA PHEV 2020  Owners Manual Maintenance
18
7
ENGINE OIL
Checking the engine oil level
1. Be sure the vehicle is on level
ground.
2. Start the engine and allow it to reach normal operating tempera-
ture.
3. Turn the engine off an

Page 489 of 597

KIA OPTIMA PHEV 2020  Owners Manual 721
Maintenance
COOLANT
The high-pressure cooling system
has a reservoir filled with year round
antifreeze coolant. The reservoir is
filled at the factory.
Check the antifreeze protection and
coolant