Kia Optima Hybrid 2020 Owner's Manual page 475

At least monthly:
• Check the coolant level in the
engine coolant reservoir.
• Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flash-
ers.
• Check the inflation pressures of all
tires including the spare for tires
that are worn, show uneven wear,
or are damaged.
• Check for loose wheel lug nuts.
At least twice a year
(i.e., every Spring and Fall) :
• Check the radiator, heater and air
conditioning hoses for leaks or
damage.
• Check the windshield washer
spray and wiper operation. Clean
the wiper blades with clean cloth
dampened with washer fluid.
• Check the headlight alignment.
• Check the muffler, exhaust pipes,
shields and clamps.
• Check the lap/shoulder belts for
wear and function.
Maintenance
At least once a year :
• Clean the body and door drain
holes.
• Lubricate the door hinges and
check the hood hinges.
• Lubricate the door and hood locks
and latches.
• Lubricate the door rubber weather-
strips.
• Check the air conditioning system.
• Inspect and lubricate automatic
transmission linkage and controls.
• Clean the battery and terminals.
• Check the brake fluid level.
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