2018 KIA OPTIMA HYBRID air filter

Maintenance
36
8
CLIMATE CONTROL AIR FILTER (IF EQUIPPED)
Filter inspection
The climate control air filter should
be replaced according to the
Maintenance Schedule. If the vehicle
is operated in severely air-polluted
cities or on dusty rough roads for a
long period, it should be inspected
more frequently and replaced earlier.
When you replace the climate control
air filter, replace it performing the fol-
lowing procedure, and be careful to
avoid damaging other components.
1. Open the glove box and removethe stoppers on both sides. 2. With the glove box open, pull the
support strap (1).
OJF075014OJF075015

837
Maintenance
3. Remove the climate control air fil-ter cover while pressing the lock
on the right side of the cover. 4. Replace the climate control air fil-
ter.
5. Reassemble in the reverse order of disassembly.
When replacing the climate control
air filter install it properly. Otherwise,
the system may produce noise and
the effectiveness of the filter may be
reduced.
OJFC075125OJFC075126

Maintenance
102
8
EMISSION CONTROL SYSTEM
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the
Warranty & Consumer Information
manual in your vehicle.
Your vehicle is equipped with an
emission control system to meet all
applicable emission regulations.
There are three emission control
systems, as follows.
(1) Crankcase emission control sys-
tem
(2) Evaporative emission control sys- tem
(3) Exhaust emission control system
In order to assure the proper function
of the emission control systems, it is
recommended that you have your
vehicle inspected and maintained by
an authorized Kia dealer in accor-
dance with the maintenance sched-
ule in this manual. Caution for the Inspection and
Maintenance Test (With Electronic
Stability Control (ESC) system)
To prevent the vehicle from mis-
firing during dynamometer test-
ing, turn the Electronic Stability
Control (ESC) system off by
pressing the ESC switch.
After dynamometer testing is completed, turn the ESC system
back on by pressing the ESC
switch again.1. Crankcase emission control system
The positive crankcase ventilation
system is employed to prevent air
pollution caused by blow-by gases
being emitted from the crankcase.
This system supplies fresh filtered air
to the crankcase through the air
intake hose. Inside the crankcase,
the fresh air mixes with blow-by
gases, which then pass through the
PCV valve into the induction system.
2. Evaporative emission con-trol (including ORVR:
Onboard Refueling Vapor
Recovery)
system
The Evaporative Emission Control
System is designed to prevent fuel
vapors from escaping into the atmos-
phere.
(The ORVR system is designed to
allow the vapors from the fuel tank to
be loaded into a canister while refu-
eling at the gas station, preventing
the escape of fuel vapors into the
atmosphere.)

Index
2I
Active ECO system. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-75ECO (Active ECO) mode. . . . . . . . . . . . . . . . . . . . . 6-75
A/V Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
72
Advanced smart cruise control system . . . . . . . . . . . . . 6-56 Speed setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
Vehicle to vehicle distance setting . . . . . . . . . . . . . . 6-62
To adjust the sensitivity of Smart Cruise Control . . 6-66
To convert to cruise control mode . . . . . . . . . . . . . . 6-67
Limitations of the system . . . . . . . . . . . . . . . . . . . . . 6-68
AFLS (Adaptive Front Lighting System) . . . . . . . . . . 4-106
Air bag warning label . . . . . . . . . . . . . . . . . . . . . . . . . . 3-70
Air bag warning light . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46
Air bags. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 3-43 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-44
Air bag warning light . . . . . . . . . . . . . . . . . . . . . . . . 3-46
SRS components and functions . . . . . . . . . . . . . . . . 3-47
Occupant Detection System . . . . . . . . . . . . . . . . . . . 3-50
Driver's and passenger's front air bag . . . . . . . . . . . 3-58
Side air bag. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-61
Curtain air bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-63
Inflation conditions . . . . . . . . . . . . . . . . . . . . . . . . . 3-65
Non-inflation conditions . . . . . . . . . . . . . . . . . . . . . 3-67
SRS Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-69
Air bag warning label. . . . . . . . . . . . . . . . . . . . . . . . 3-70
Air cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34\
Filter replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34 Air Conditioning refrigerant label . . . . . . . . . . . . . . . 4-128
Air conditioning system lubricants. . . . . . . . . . . . . . . . . 9-5
Air ventilation seat . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-137
Anti-lock brake system (ABS) . . . . . . . . . . . . . . . . . . . 6-32
Appearance care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-94
Exterior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-94
Interior care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-99
Armed stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
ASCC/LDWS Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 4-72
Audio system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-\
2
Steering wheel audio controls . . . . . . . . . . . . . . . . . . 5-3
AUX, USB port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
How vehicle radio works . . . . . . . . . . . . . . . . . . . . . . 5-5
Auto defogging system . . . . . . . . . . . . . . . . . . . . . . . . 4-131
AUTO HOLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
Auto light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10\
1
Automatic climate control system . . . . . . . . . . . . . . . 4-115 Automatic heating and air conditioning. . . . . . . . . 4-116
Climate control air filter. . . . . . . . . . . . . . . . . . . . . 4-127
Air Conditioning refrigerant label . . . . . . . . . . . . . 4-128
Checking the amount of air conditioner refrigerantand compressor lubricant . . . . . . . . . . . . . . . . . . . 4-127
Automatic heating and air conditioning . . . . . . . . . . . 4-116
Automatic transaxle . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11 Manual mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
Shift-lock override . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
A

Index
4I
Center console storage . . . . . . . . . . . . . . . . . . . . . . . . 4-133
Central door lock switch. . . . . . . . . . . . . . . . . . . . . . . . 4-15
Chains - Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-96
Checking the amount of air conditionerrefrigerant and compressor lubricant . . . . . . . . . . . 4-127
Checking tire inflation pressure . . . . . . . . . . . . . . . . . . 8-46
Child restraint system . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 Selecting a Child Restraint System (CRS) . . . . . . . 3-33
Installing a Child Restraint System (CRS) . . . . . . . 3-36
Securing a child restraint with the LATCHanchors system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38
"Securing a child restraint seatwith" "Tether Anchor" "system" . . . . . . . . . . . . . . . . . . . 3-39
Child-protector rear door lock . . . . . . . . . . . . . . . . . . . 4-16
Clean air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-\
132
Climate control air filter . . . . . . . . . . . . . . . . . . . . . . . . 8-36 Filter inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-36
Checking the amount of air conditioner refrigerant and compressor lubricant . . . . . . . . . . . . . . . . . . . . . . 4-127
Closing the sunroof. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
Clothes hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-140
Combined instrument, see instrument cluster . . . . . . . 4-51
consumer assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 8-27
Coolant(Engine/Inverter) . . . . . . . . . . . . . . . . . . . . . . . 8-27 Checking the coolant level . . . . . . . . . . . . . . . . . . . . 8-27
Changing the coolant . . . . . . . . . . . . . . . . . . . . . . . . 8-30
Cooling fluid, see engine coolant . . . . . . . . . . . . . . . . . 8-27 Crankcase emission control system . . . . . . . . . . . . . . 8-102
Cruise control system . . . . . . . . . . . . . . . . . . . . . . . . . . 6-52
To set cruise control speed . . . . . . . . . . . . . . . . . . . . 6-53
To increase cruise control set speed . . . . . . . . . . . . . 6-53
To decrease the cruising speed . . . . . . . . . . . . . . . . . 6-54
To temporarily accelerate with the cruise control on . . 6-54
To cancel cruise control . . . . . . . . . . . . . . . . . . . . . . 6-54
To resume cruising speed at more than approximately 20mph (30 km/h) . . . . . . . . . . . . . . 6-55
To turn cruise control off . . . . . . . . . . . . . . . . . . . . . 6-55
Cup holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-135
Curtain air bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-63
Dashboard illumination, see instrument panel illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
Dashboard, see instrument cluster . . . . . . . . . . . . . . . . 4-51
Day/night rearview mirror . . . . . . . . . . . . . . . . . . . . . . 4-46
Daytime running light . . . . . . . . . . . . . . . . . . . . . . . . 4-100
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . 5-8 FCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . 5-8
Defogging (Windshield) . . . . . . . . . . . . . . . . . . . . . . . 4-129
Defroster (Rear window) . . . . . . . . . . . . . . . . . . . . . . 4-114
Defrosting (Windshield) . . . . . . . . . . . . . . . . . . . . . . . 4-129
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-\
2
Disarmed stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
D

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