2018 KIA OPTIMA HYBRID engine

What to do in an emergency
87
6. If you cannot find the cause of theoverheating, wait until the engine
temperature has returned to nor-
mal. Then, if coolant has been lost,
carefully add coolant to the reser-
voir to bring the fluid level in the
reservoir up to the halfway mark.
7. Proceed with caution, keeping alert for further signs of overheat-
ing. If over heating happens again,
call the nearest authorized Kia
dealer for assistance.
✽ ✽NOTICE
Serious loss of coolant indicates
there is a leak in the cooling system
and should be checked as soon as
possible by an authorized Kia dealer.
CAUTION
When the engine overheats from
low engine coolant, suddenlyadding engine coolant maycause cracks in the engine. Toprevent damage, add enginecoolant slowly in small quantities
WARNING
Do not remove the
radiator cap when the
engine is hot. This
can allow coolant to
blow out of the open-
ing and cause seri-
ous burns.

711
What to do in an emergency
✽
✽NOTICE
If the TPMS, Low Tire Pressure
indicator does not illuminate for 3
seconds when the ignition switch is
turned to the ON position or engine
is running, or if they remain illumi-
nated after coming on for approxi-
mately 3 seconds, take your vehicle
to your nearest authorized Kia deal-
er and have the system checked.
Low tire pressure
telltale
Low tire pressure position tell-
tale
When the tire pressure monitoring
system warning indicators are illumi-
nated, one or more of your tires is
significantly under-inflated.
If the telltale illuminates, immediately
reduce your speed, avoid hard cor-
nering and anticipate increased stop-
ping distances. You should stop and
check your tires as soon as possible. Inflate the tires to the proper pres-
sure as indicated on the vehicle’s
placard or tire inflation pressure label
located on the driver’s side center pil-
lar outer panel. If you cannot reach a
service station or if the tire cannot
hold the newly added air, replace the
low pressure tire with the spare tire.
Then the TPMS malfunction indicator
and the Low Tire Pressure telltale
may turn on and illuminate after
restarting and about 20 minutes of
continuous driving before you have
the low pressure tire repaired and
replaced on the vehicle.
In winter or cold weather, the low tire
pressure telltale may be illuminated if
the tire pressure was adjusted to the
recommended tire inflation pressure
in warm weather. It does not mean
your TPMS is malfunctioning
because the decreased temperature
leads to a proportional lowering of
tire pressure.
OJFHP047487L

What to do in an emergency
18
7
Use of the Tire Mobility Kit may not
be effective for tire damage larger
than approximately 0.24 in (6 mm).
Please contact the nearest Kia
dealership if the tire cannot be
made roadworthy with the Tire
Mobility Kit.
Do not use the Tire Mobility Kit if a tire is severely damaged by driving
run flat or with insufficient air pres-
sure.
Do not remove any foreign objects such as nails or screws that have
penetrated the tire.
Provided the car is outdoors, leave the engine running. Otherwise
operating the compressor may
eventually drain the car battery. Never leave the Tire Mobility Kit
unattended while it is being used.
Do not leave the compressor run- ning for more than 10 min. at a time
or it may overheat.
Do not use the Tire Mobility Kit if the ambient temperature is below -22°F
(-30°C).
If the sealant gets on your skin, wash it with a large amount of
water and if it irritates continuously,
visit a doctor for examination.
If the sealant gets into your eyes, raise your eyelid and wash for at
least 15 minutes. If it irritates con-
tinuously, visit a doctor for exami-
nation.
If you have drank the sealant, wash the mouth and drink a large amount
of water. However, do not give any-
thing to an unconscious person and
see the doctor immediately.
Exposure to the sealant for a long
time may cause damage to the
bodily tissues.

What to do in an emergency
22
7
9. Connect between compressor and
the vehicle power outlet using the
cable and connectors (4).
✽ ✽NOTICE
Only use the front passenger side
power outlet.
10. With the engine start/stop button
position on: switch on the com-
pressor and let it run for approxi-
mately 5~7 minutes to fill the
sealant up to proper pressure
(refer to the "Tires and wheels" in
chapter 9). The inflation pressure
of the tire after filling is unimpor-
tant and will be checked/corrected
later. Be careful not to overinflate the
tire and stay away from the tire
when filling it. When the tire and
wheel are damaged, do not use
Tire Mobility Kit for your safety.
11. Switch off the compressor.
12. Detach the hose from the sealant bottle connector and from the tire
valve.
Return the Tire Mobility Kit to its stor-
age location in the vehicle.
Distributing the sealant
13. Immediately drive approximately 4~6 miles (7~10 km or, about 10
min) to evenly distribute the
sealant in the tire.
Do not exceed a speed of 50 mph
(80 km/h). If possible, do not fall
below a speed of 12 mph (20 km/h).
While driving, if you experience any
unusual vibration, ride disturbance or
noise, reduce your speed and drive
with caution until you can safely pull
off of the side of the road.
Call for road side service or towing.
When you use the Tire Mobility Kit,
the tire pressure sensors and wheel
may be stained by sealant. Therefore,
remove the tire pressure sensors and
wheel stained by sealant and have
your vehicle inspected by an author-
ized Kia dealer.
OJFA066038
WARNING
Do not attempt to drive your
vehicle if the tire pressure is
below 29 psi (200 kPa). This
could result in an accident due
to sudden tire failure.
WARNING
Carbon monoxide poisoning
and suffocation is possible if the
engine is left running in a poorly
ventilated or unventilated loca-
tion (such as inside a building).

Maintenance
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Maintenance services . . . . . . . . . . . . . . . . . . . . . . . . 8-4
• Owner’s responsibility . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
• Owner maintenance precautions . . . . . . . . . . . . . . . . . 8-5
Owner maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
• Owner maintenance schedule . . . . . . . . . . . . . . . . . . . 8-6
Scheduled maintenance service . . . . . . . . . . . . . . 8-8
Explanation of scheduled maintenance items . . . 8-20
Checking fluid levels . . . . . . . . . . . . . . . . . . . . . . . 8-23
Engine oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
• Checking the engine oil level . . . . . . . . . . . . . . . . . . . 8-24
• Changing the engine oil and filter . . . . . . . . . . . . . . . 8-25
Engine maintenance mode (for Plug-in hybrid) . 8-26
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-27\
• Checking the coolant level . . . . . . . . . . . . . . . . . . . . . 8-27
• Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
• Inverter coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
• Recommended coolant . . . . . . . . . . . . . . . . . . . . . . . . 8-29
• Changing the coolant . . . . . . . . . . . . . . . . . . . . . . . . . 8-30
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
• Checking the brake fluid level . . . . . . . . . . . . . . . . . . 8-31
Washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-32
• Checking the washer fluid level . . . . . . . . . . . . . . . . . 8-32
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33
• Checking the parking brake. . . . . . . . . . . . . . . . . . . . 8-33
Air cleaner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34
• Filter replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34
Climate control air filter . . . . . . . . . . . . . . . . . . . . 8-36
• Filter inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-36
Wiper blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38
• Blade inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38
• Blade replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-\
42
• For best battery service . . . . . . . . . . . . . . . . . . . . . . . 8-42
• Recharging the battery . . . . . . . . . . . . . . . . . . . . . . . . 8-43
• Reset items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-44\
Tires and wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-45
• Tire care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
8-45
• Recommended cold tire inflation pressures . . . . . . . 8-45
• Tire pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-46
• Checking tire inflation pressure. . . . . . . . . . . . . . . . . 8-46
• Tire rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-47
• Wheel alignment and tire balance . . . . . . . . . . . . . . . 8-48
• Tire replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-49
• Wheel replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-49
• Tire traction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-50
• Tire maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-50
• Tire sidewall labeling . . . . . . . . . . . . . . . . . . . . . . . . . 8-50
8

• All season tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-57
• Summer tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-57
• Snow tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-\
57
• Tire chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-57\
• Radial-ply tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-58
• Low aspect ratio tire(if equipped) . . . . . . . . . . . . . . . 8-58
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
8-60
• Inner panel fuse replacement . . . . . . . . . . . . . . . . . . . 8-61
• Engine compartment fuse replacement. . . . . . . . . . . 8-63
• Fuse/relay panel description. . . . . . . . . . . . . . . . . . . . 8-66
Light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-80
• Bulb replacement precaution . . . . . . . . . . . . . . . . . . 8-80
• Light bulb position (Front). . . . . . . . . . . . . . . . . . . . . 8-81
• Light bulb position (Rear) . . . . . . . . . . . . . . . . . . . . . 8-81
• Light bulb position (Side) . . . . . . . . . . . . . . . . . . . . . . 8-82
• Headlamp (HID type) bulb replacement(For Hybrid) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-82
• Headlamp (Low beam) bulb replacement (For Hybrid) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-83
• Headlamp (High beam) bulb replacement (For Hybrid) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-84
• Headlamp (Low/High beam,LED type) bulb replacement (For Plug-in Hybrid) . . . . . . . . . 8-85
• Front turn signal lamp bulb replacement . . . . . . . . 8-85
• Position lamp + DRL (LED type) bulb replacement . . 8-86• Side repeater lamp bulb replacement . . . . . . . . . . . . 8-87
• Rear turn signal lamp bulb replacement . . . . . . . . . 8-87
• Stop and tail lamp (LED type) bulb replacement . . 8-88
• Back-up lamp bulb replacement . . . . . . . . . . . . . . . . 8-89
• License plate lamp bulb replacement . . . . . . . . . . . . 8-90
• High mounted stop lamp bulb replacement . . . . . . . 8-90
• Map lamp bulb replacement . . . . . . . . . . . . . . . . . . . 8-91
• Vanity mirror lamp bulb replacement . . . . . . . . . . . 8-91
• Room lamp bulb replacement . . . . . . . . . . . . . . . . . . 8-92
• Personal lamp bulb replacement . . . . . . . . . . . . . . . . 8-92
• Glove box lamp bulb replacement . . . . . . . . . . . . . . 8-93
• Trunk lamp bulb replacement . . . . . . . . . . . . . . . . . 8-93Appearance care . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-94
• Exterior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-94
• Interior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-99
Emission control system . . . . . . . . . . . . . . . . . . . 8-102
• Crankcase emission control system . . . . . . . . . . . . . 8-102
• Evaporative emission control (including ORVR:
Onboard Refueling Vapor Recovery) system . . . . 8-102
• Exhaust emission control system . . . . . . . . . . . . . . . 8-103
California perchlorate notice . . . . . . . . . . . . . . . 8-1058

83
Maintenance
ENGINE COMPARTMENT
OJFH075161L
■
■Gasoline Engine (Nu 2.0L - GDI)❈ The actual engine compartment in the vehicle may differ from the illustration. 1. Engine coolant reservoir
2. Engine oil filler cap
3. Engine oil dipstick
4. Brake fluid reservoir
5. Air cleaner
6. Fuse box
7. Inverter coolant reservoir
8. Radiator cap
9. Windshield washer fluid reservoir

85
Maintenance
(Continued)
• Wash the undercarriage of yourvehicle regularly during the win-
ter and whenever your vehicle has
been exposed to such salts or
chemicals.
• Do a thorough washing of the undercarriage at the end of the
winter.
• Use professional service techni- cians or governmental inspection
stations to annually inspect for
corrosion.
• Immediately seek an inspection of your vehicle if you become visual-
ly aware of corrosion flaking or
scaling or if you become aware of
a change in vehicle performance,
such as soft or spongy brakes, flu-
ids leaking, impairment of direc-
tional control, suspension noises
or rattling metal straps.
NHTSA further advises that after
a vehicle is 7 years old, it is essen-
tial that you take these indicated
maintenance steps to ensure that
you protect yourself from unsafe
corrosion conditions.Owner maintenance precau-
tions
Improper or incomplete service may
result in problems. This section gives
instructions only for the maintenance
items that are easy to perform.
As explained earlier in this section,
several procedures can be done only
by an authorized Kia dealer with spe-
cial tools.
✽ ✽ NOTICE
Improper owner maintenance dur-
ing the warranty period may affect
warranty coverage. For details, read
the separate Warranty & Consumer
Information manual provided with
the vehicle. If you're unsure about
any servicing or maintenance proce-
dure, have it done by an authorized
Kia dealer.
WARNING- Maintenance
work
Do not wear jewelry or loose
clothing while working under
the hood of your vehicle with
the engine running. These can
become entangled in moving
parts, if you must run the
engine while working under the
hood, make certain that you
remove all jewelry (especially
rings, bracelets, watches, and
necklaces) and all neckties,
scarves, and similar loose
clothing before getting near the
engine or cooling fans.