check oil KIA OPTIMA PHEV 2018 User Guide

Maintenance
20
8
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 being driven in severe con-
ditions, more frequent oil and filter
changes are required.
HSG (Hybrid starter & genera-
tor) belt
The HSG belt should be changed at
the intervals specified in the mainte-
nance schedule.
Fuel filter (for gasoline)
Kia gasoline vehicle is equipped a
lifetime fuel filter that integrated with
the fuel tank. Regular maintenance
or replacement is not needed but
depends on fuel quality. If there are
some important safety matters like
fuel flow restriction, surging, loss of
power, hard starting problem etc, fuel
filter inspection or replace is needed.
The fuel filter be Inspected or
replaced by an authorized Kia dealer.
Fuel lines, fuel hoses and con-
nections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. Have an authorized Kia dealer
replace any damaged or leaking
parts immediately.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap
should be inspected at those inter-
vals specified in the maintenance
schedule. Make sure that a new
vapor hose or fuel filler cap is cor-
rectly replaced.
Vacuum crankcase ventilation
hoses
Inspect the surface of hoses for evi-
dence of heat and/or mechanical
damage. Hard and brittle rubber,
cracking, tears, cuts, abrasions, and
excessive swelling indicate deterio-
ration. Particular attention should be
paid to examine those hose surfaces
nearest to high heat sources, such
as the exhaust manifold.
Inspect the hose routing to assure
that the hoses do not come in con-
tact with any heat source, sharp
edges or moving component which
might cause heat damage or
mechanical wear. Inspect all hose
connections, such as clamps and
couplings, to make sure they are
secure, and that no leaks are pres-
ent. Hoses should be replaced
immediately if there is any evidence
of deterioration or damage.

823
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 leakage. Tighten con-
nections or replace parts as neces-
sary.
Suspension mounting bolts
Check the suspension connections
for looseness or damage. Retighten
to the specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and engine
off, check for excessive free-play in
the steering wheel.
Check the linkage for bends or dam-
age. Check the dust boots and ball
joints for deterioration, cracks, or
damage. Replace any damaged
parts.
Drive shafts and boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged
parts and, if necessary, repack the
grease.
Air conditioning refrigerant
Check the air conditioning lines and
connections for leakage and dam-
age.When checking engine oil, engine
coolant, brake fluid, and washer fluid,
always be sure to clean the area
around any filler plug, drain plug, or
dipstick before checking or draining
any lubricant or fluid. This is espe-
cially important in dusty or sandy
areas and when the vehicle is used
on unpaved roads. Cleaning the plug
and dipstick areas will prevent dirt
and grit from entering the engine and
other mechanisms that could be
damaged.
CHECKING FLUID LEVELS

Maintenance
24
8
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 and wait for a few minutes (about 5 minutes) for
the oil to return to the oil pan.
4. Pull the dipstick out, wipe it clean, and reinsert it fully. 5. Pull the dipstick out again and
check the level. The level should
be between F and L.
If it is near or at L, add enough oil to
bring the level to F.Do not overfill.
Use a funnel to help prevent oil
from being spilled on engine com-
ponents.
Use only the specified engine oil. (Refer to “Recommended lubricantsand capacities” in chapter 9.)
CAUTION - Replacing
engine oil
Do not overfill the engine oil. Itmay damage the engine.
WARNING- Radiator hose
Be very careful not to touch the
radiator hose when checking or
adding the engine oil as it may
be hot enough to burn you.
OJFH075163
■Gasoline Engine (Nu 2.0L - GDI)
OJFH075164
■Gasoline Engine (Nu 2.0L - GDI)

831
Maintenance
BRAKE FLUID
Checking the brake fluid level
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX (Maximum) and MIN
(Minimum) marks on the side of the
reservoir.
Before removing the reservoir cap
and adding brake fluid, clean the
area around the reservoir cap thor-
oughly to prevent brake fluid contam-
ination.If the level is low, add fluid to the
MAX (Maximum) level. The level will
fall with accumulated mileage. This is
a normal condition associated with
the wear of brake linings. If the fluid
level is excessively low, have the
brake system checked by an author-
ized Kia dealer.
Use only the specified brake fluid.
(Refer to “Recommended lubricantsand capacities” in chapter 9.)
Never mix different types of fluid.
In the event the brake system
requires frequent additions of fluid,
the vehicle should be inspected by
an authorized Kia dealer.
When changing and adding brake
fluid, handle it carefully. Do not let it
come in contact with your eyes. If
brake fluid should come in contact
with your eyes, immediately flush
them with a large quantity of fresh
tap water. Have your eyes examined
by a doctor as soon as possible.
Brake fluid, which has been exposed
to open air for an extended time
should never be used as its quality
cannot be guaranteed. It should be
disposed of properly.
OJFH075166CAUTION - Brake fluid
Do not allow brake fluid to con-tact the vehicle's body paint, aspaint damage will result.
CAUTION - Proper fluid
Only use brake fluid in brakesystem. Small amounts ofimproper fluids (such as engineoil) can cause damage to thebrake system.

Maintenance
44
8
When recharging the battery,
observe the following precautions:
The battery must be removed from
the vehicle and placed in an area
with good ventilation.
Do not allow cigarettes, sparks, or flame near the battery.
Watch the battery during charging, and stop or reduce the charging
rate if the battery cells begin
gassing (boiling) violently or if the
temperature of the electrolyte of
any cell exceeds 120°F (49°C).
Wear eye protection when check- ing the battery during charging.
Disconnect the battery charger in the following order.
1. Turn off the battery charger main switch.
2. Unhook the negative clamp from the negative battery terminal.
3. Unhook the positive clamp from the positive battery terminal. Before performing maintenance or
recharging the battery, turn off all
accessories and stop the engine.
The negative battery cable must be removed first and installed last
when the battery is disconnected.Reset items
Items should be reset after the bat-
tery has been discharged or the bat-
tery has been disconnected.
Auto up/down window (See chapter 4)
Sunroof (See chapter 4)
Trip computer (See chapter 4)
Climate control system (See chapter 4)
Driver position memory system (See chapter 3)
Audio (See chapter 5)

Maintenance
60
8
FUSES
❈ Left side : Normal , Right side : Blown
A vehicle’s electrical system is pro-
tected from electrical overload dam-
age by fuses.
This vehicle has 2 (or 3) fuse panels,
one located in the driver’s side panel
bolster, the other in the engine com-
partment near the battery.
If any of your vehicle’s lights, acces-
sories, or controls do not work, check
the appropriate circuit fuse. If a fuse
has blown, the element inside the
fuse will melt.
If the electrical system does not
work, first check the driver’s side
fuse panel.
Always replace a blown fuse with
one of the same rating.
If the replacement fuse blows, this
indicates an electrical problem. Avoid
using the system involved and imme-
diately consult an authorized Kia
dealer.
Three kinds of fuses are used: blade
type for lower amperage rating, car-tridge type, and multi fuse for higheramperage ratings.
Do not arbitrarily modify or add-on electric wiring to the vehicle.
WARNING- Fuse replace-
ment
Never replace a fuse with any- thing but another fuse of the
same rating.
A higher capacity fuse could cause damage and possibly a
fire.
Never install a wire or alu- minum foil instead of the
proper fuse - even as a tem-
porary repair. It may cause
extensive wiring damage and
a possible fire.
CAUTION
Do not use a screwdriver or anyother metal object to removefuses because it may cause ashort circuit and damage thesystem.
OJF075021
■
Blade type
■ Cartridge type
■ Multi fuse
■ BFT

Maintenance
76
8
Fuse NameFuse ratingCircuit Protected
FUSE
FUEL PUMP20AFuel Pump Relay
ECU 120APCM
SENSORS 210AMass Air Flow Sensor, Fuel Pump Relay, Oil Control Valve #1/#2, Canister Close Valve, Camshaft
Position Sensor #1/#2, Purge Control Solenoid Valve
TCU 2 15ATransaxle Range Switch
ACTIVE
HYDRAULIC BOOTER 310AMultipurpose Check Connector, Integrated Brake Actuation Unit
POWER
OUTLET 320ARear Power Outlet
B/UP LAMP10APCM, Transaxle Range Switch, Electro Chromic Mirror, Rear Combination Lamp (IN) LH/RH
OBC10AHEV OBC SIG, INLET
IG3 420AIG3 1 RLY
IG3 110AHEV WATER PUMP
IG3 215AHEV OBC SIG
IG3 310APCU, HPCU, POSITION SW, CLUSTER, BMS EXTN, AVN, IGPM, CHARGER IND

899
Maintenance
Keep paint and trim in good con-
dition
Scratches or chips in the finish
should be covered with "touch-up"
paint as soon as possible to reduce
the possibility of corrosion. If bare
metal is showing through, the atten-
tion of a qualified body and paint
shop is recommended.
Bird droppings : Bird droppings are
highly corrosive and may damage
painted surfaces in just a few hours.
Always remove bird droppings as
soon as possible.
Don't neglect the interior
Moisture can collect under the floor
mats and carpeting and cause corro-
sion. Check under the mats periodi-
cally to be sure the carpeting is dry.
Use particular care if you carry fertil-
izers, cleaning materials or chemi-
cals in the vehicle.
These should be carried only in prop-
er containers and any spills or leaks
should be cleaned up, flushed with
clean water and thoroughly dried.Interior care
Interior general precautions
Prevent chemicals such as perfume,
cosmetic oil, sun cream, hand clean-
er, and air freshener from contacting
the interior parts because they may
cause damage or discoloration. If
they do contact the interior parts,
wipe them off immediately. If neces-
sary, use a vinyl cleaner, see product
instructions for correct usage.
CAUTION - Electrical
components
Never allow water or other liq-uids to come in contact withelectrical/electronic compo-nents inside the vehicle as thismay damage them.
CAUTION - Leather
When cleaning leather products(steering wheel, seats etc.), useneutral detergents or low alco-hol content solutions. If you usehigh alcohol content solutionsor acid/alkaline detergents, thecolor of the leather may fade orthe surface may get stripped off.

I5
Index
Display illumination, see instrument panelillumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
Displays, see instrument cluster . . . . . . . . . . . . . . . . . . 4-51
Door locks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
13 from outside the vehicle . . . . . . . . . . . . . . . . . . . . . . 4-13
from inside the vehicle . . . . . . . . . . . . . . . . . . . . . . . 4-14
Central door lock switch . . . . . . . . . . . . . . . . . . . . . 4-15
Child-protector rear door lock . . . . . . . . . . . . . . . . . 4-16
Drinks holders, see cup holders . . . . . . . . . . . . . . . . . 4-135
Drive mode integrated control system . . . . . . . . . . . . . 6-73 Hybrid vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-73
ECO (Active ECO) mode. . . . . . . . . . . . . . . . . . . . . 6-73
SPORT mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-74
Driver position memory system . . . . . . . . . . . . . . . . . . 3-11
Driver's and passenger's front air bag . . . . . . . . . . . . . . 3-58
Driver's seat belt warning . . . . . . . . . . . . . . . . . . . . . . . 3-22
Driving at night . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-92
Driving in flooded areas . . . . . . . . . . . . . . . . . . . . . . . . 6-94
Driving in the rain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-93
Driving off-road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-94
ECO mode ( Active ECO system) . . . . . . . . . . . . . . . . 6-75
ECO mode (Drive mode integrated control system) . . 6-73
Economical operation . . . . . . . . . . . . . . . . . . . . . . . . . . 6-89
Electric parking brake (EPB) . . . . . . . . . . . . . . . . . . . . 6-21
Electric power steering . . . . . . . . . . . . . . . . . . . . . . . . . 4-42 Electrical equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
Electrochromic mirror (ECM) . . . . . . . . . . . . . . . . . . . 4-47
Electronic stability control (ESC) . . . . . . . . . . . . . . . . 6-34
Emergency fuel filler lid release(Hybrid) . . . . . . . . . . . 4-32
Emergency fuel filler lid release(Plug-in Hybrid) . . . . 4-35
Emergency starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Jump starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Emergency trunk safety release . . . . . . . . . . . . . . . . . . 4-18
Emergency while driving . . . . . . . . . . . . . . . . . . . . . . . . 7-3
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
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 9-2
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Engine coolant temperature gauge . . . . . . . . . . . . . . . . 4-53
Engine maintenance mode(plug-in hybrid) . . . . . . . . . 8-26 Starting Engine Maintenance Mode. . . . . . . . . . . . . 8-26
Stopping Engine Maintenance Mode . . . . . . . . . . . . 8-26
Engine number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-\
24 Checking the engine oil level . . . . . . . . . . . . . . . . . . 8-24
Changing the engine oil and filter . . . . . . . . . . . . . . 8-25
Engine overheats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
E

Index
6I
Engine start/stop button . . . . . . . . . . . . . . . . . . . . . . . . . 6-6Illuminated engine start/stop button. . . . . . . . . . . . . . 6-6
Engine start/stop button position . . . . . . . . . . . . . . . . 6-6
Starting the hybrid system . . . . . . . . . . . . . . . . . . . . . 6-8
Engine start/stop button illumination . . . . . . . . . . . . . . . 6-6
Engine start/stop button position . . . . . . . . . . . . . . . . . . 6-6
Engine will not start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Evaporative emission control (including ORVR: Onboard Refueling Vapor Recovery) system . . . . . 8-102
Exhaust emission control system . . . . . . . . . . . . . . . . 8-103
Explanation of scheduled maintenance items . . . . . . . 8-20 Engine oil and filter . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
Hybrid starter & generator belt . . . . . . . . . . . . . . . . 8-20
Fuel filter (for gasoline) . . . . . . . . . . . . . . . . . . . . . . 8-20
Fuel lines, fuel hoses and connections . . . . . . . . . . . 8-20
Vapor hose and fuel filler cap . . . . . . . . . . . . . . . . . 8-20
Vacuum crankcase ventilation hoses . . . . . . . . . . . . 8-20
Air cleaner filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Coolant (Engine / Inverter) . . . . . . . . . . . . . . . . . . . 8-21
Automatic transaxle fluid . . . . . . . . . . . . . . . . . . . . . 8-21
Brake hoses and lines . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
Brake discs, pads, calipers and rotors . . . . . . . . . . . 8-22
Exhaust pipe and muffler . . . . . . . . . . . . . . . . . . . . . 8-23
Suspension mounting bolts . . . . . . . . . . . . . . . . . . . 8-23 Steering gear box, linkage & boots/
lower arm ball joint . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Drive shafts and boots . . . . . . . . . . . . . . . . . . . . . . . 8-23
Air conditioning refrigerant . . . . . . . . . . . . . . . . . . . 8-23
Exterior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-94
Exterior overview (Front) . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Exterior overview (Rear) . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Flat tires, see tire mobility kit. . . . . . . . . . . . . . . . . . . . 7-16
Floor mat anchor(s) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-140
Fluid Checking fluid levels . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
Washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-32
Folding the outside rearview mirror . . . . . . . . . . . . . . . 4-50
"Front passenger andrear seat 3-point system withcombination locking retractor" . . . . . . . . . . . . . 3-25
Front passenger's seat belt warning . . . . . . . . . . . . . . . 3-23
Front seat adjustment (manual) . . . . . . . . . . . . . . . . . . . 3-7
Front seat adjustment (power) . . . . . . . . . . . . . . . . . . . . 3-8
Front turn signal lamp bulb replacement . . . . . . . . . . . 8-85
Fuel filler lid (Hybrid) . . . . . . . . . . . . . . . . . . . . . . . . . 4-29 Emergency fuel filler lid release . . . . . . . . . . . . . . . 4-32
Fuel filler lid (Plug-in Hybrid) . . . . . . . . . . . . . . . . . . . 4-33 Emergency fuel filler lid release . . . . . . . . . . . . . . . 4-35
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55\
F