check engine KIA OPTIMA 2020 Repair Manual

755
Maintenance
Inner panel fuse replacement
1. Turn the engine start/stop buttonto the OFF position and all other
switches off.
2. Open the fuse panel cover.
If the switch is located in the “OFF”
position, a caution indicator will be
displayed in the cluster. 3. Pull the suspected fuse straight
out. Use the removal tool provided
on the engine compartment fuse
panel cover.
4. Check the removed fuse; replace it if it is blown.
Spare fuses are provided in theengine compartment fuse panel.
5. Push in a new fuse of the same rating, and make sure it fits tightly
in the clips.
If it fits loosely, consult an authorized
Kia dealer.
OJFH075023
OJF075022
CAUTION - Random
wiring prohibited when
retrofitting equipment
Use of random wiring in the vehicle might cause danger dueto failure and damage of thevehicle’s performance. Usingrandom wires especially whenretrofitting the AVN or theftalarm system, remote enginecontrol, car phone or radio,might damage the vehicle orcause fire.
CAUTION - Remodeling
Prohibited
Do not rewire your vehicle inany way as doing so may affectthe performance of several safe-ty features in your vehicle.Rewiring your vehicle may alsovoid your warranty and causeyou to be responsible for anysubsequent vehicle damagewhich may result.

Maintenance
56
7
If you do not have a spare, use a
fuse of the same rating from a circuityou may not need for operating thevehicle, such as the power outletfuse.
If the head lamp, turn signal lamp,
stop signal lamp, fog lamp, DRL, tail
lamp, High Mounted Stop Lamp do
not work and the fuses are OK,
check the fuse panel in the engine
compartment. If a fuse is blown, it
must be replaced.
✽ ✽ NOTICE
If the headlamp, fog lamp, turn sig-
nal lamp, or tail lamp malfunction
even without any problem to the
lamps, have the vehicle checked by
an authorized Kia dealer.
Fuse switch
Always set the fuse switch to the ON
position before using the vehicle.
If you move the switch to the OFF
position, some items such as audio
and the digital clock must be reset
and transmitter (or smart key) may
not work properly. When the switch is
Off, the caution indicator will be dis-
played on the instrument cluster.
Always place the fuse switch in the
ON position while driving the vehicle.
If the switch is located in the “OFF”
position, a caution indicator will be
displayed in the cluster.
OJF075024
CAUTION - Fuse Panel
Covers
Set all switches to ON before
driving.
If the vehicle is going to be unused for over 1 month, setall switches to OFF to preventthe batteries from draining.
The contact points of the switches may wear out withexcessive use. Please refrainfrom excessive use of theswitches (except for long-termparking for over 1 month).

757
Maintenance
Engine compartment fuse
replacement
1. Turn the engine start/stop buttonto the OFF position and all other
switches off.
2. Remove the fuse panel cover by pressing the tab and pulling the
cover up. When the blade type
fuse is disconnected, remove it by
using the clip designed for chang-
ing fuses located in the engine
compartment fuse box. Upon
removal, securely insert a reserve
fuse of the same rating. 3. Check the removed fuse; replace it
if it is blown. To remove or insert
the fuse, use the fuse puller in the
engine compartment fuse panel.
4. Push in a new fuse of the same rating, and make sure it fits tightly
in the clips. If it fits loosely, consult
an authorized Kia dealer.
Multi fuse
If the multi fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative batterycable.
3. Remove the nuts shown in the pic- ture above.
4. Replace the fuse with a new one of the same rating.
5. Reverse these steps to reinstall the multi fuse.OJFH075025
OJFH075072
CAUTION
After checking the fuse panel inthe engine compartment,securely install the fuse panelcover to protect against anyelectrical failure which mayoccur from water contact. Listenfor the audible clicking sound toensure the fuse panel cover issecurely fastened.

Maintenance
58
7
✽ ✽
NOTICE
Do not disassemble nor assemble the
multi fuse when it is secured with
nuts and bolts. Incorrect or partial
assembly torque may cause a fire.
Have the vehicle checked by an
authorized Kia dealer.
Main fuse
If the main fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery
cable.
3. Remove the nuts shown in the pic- ture above.
4. Replace the fuse with a new one of the same rating.
5. Reverse these steps to reinstall the main fuse.
✽ ✽NOTICE
The electronic system may not func-
tion correctly even when the engine
compartment and internal fuse
box’s individual fuses are not dis-
connected. In such case the cause of
the problem may be disconnection
of the main fuse (BFT type), which is
located inside the positive battery
terminal (+) cap.
Since the main fuse is designed more
intricately than other parts, have the
vehicle checked by an authorized
Kia dealer.
OJFH075168
CAUTION
Visually inspect the battery cap
to ensure it is securely closed.If the battery cap is not securelyclosed, moisture may enter thesystem and damage the electri-cal components.

Maintenance
100
7
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in
the canister are drawn into the surge
tank through the purge control sole-
noid valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve is
controlled by the Engine Control
Module (ECM); when the engine
coolant temperature is low during
idling, the PCSV closes so that evap-
orated fuel is not taken into the
engine. After the engine warms up
during ordinary driving, the PCSV
opens to introduce evaporated fuel to
the engine.
3. Exhaust emission control system
The Exhaust Emission Control
System is a highly effective system
which controls exhaust emissions
while maintaining good vehicle per-
formance.
Engine exhaust gas precautions
(carbon monoxide)
Carbon monoxide can be present with other exhaust fumes.
Therefore, if you smell exhaust
fumes of any kind inside your vehi-
cle, have it inspected and repaired
immediately. If you ever suspect
exhaust fumes are coming into
your vehicle, drive it only with all
the windows fully open. Have your
vehicle checked and repaired
immediately.
WARNING - Exhaust
Engine exhaust gases contain
carbon monoxide (CO). Though
colorless and odorless, it is
dangerous and could be lethal if
inhaled. Follow the instructions
on this page to avoid CO poi-
soning.

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Index
Brake fluid ....................................................................7-25\
Checking the brake fluid level ....................................7-25
Brake system..................................................................5-19 Anti-lock Brake System (ABS) ..................................5-33
Auto hold ....................................................................5-29\
Electronic Parking Brake (EPB) ................................5-22
Electronic Stability Control (ESC) ............................5-34
Good braking practices ..............................................5-41
Hill-start Assist Control (HAC) ..................................5-40
Parking brake - Foot type ..........................................5-21
Power brakes ..............................................................5-19
Vehicle Stability Management (VSM)........................5-39
Warning messages ......................................................5-31
Bulb wattage ....................................................................8-3
Checking fluid levels ....................................................7-17
Child Restraint System (CRS) ......................................3-33 Children always in the rear ........................................3-33
Installing a Child Restraint System (CRS) ................3-37
Selecting a Child Restraint System (CRS) ................3-34
Clean air ......................................................................4-\
139
Climate control air filter ................................................7-30 Filter inspection ..........................................................7-30
Coolant ........................................................................\
..7-21 Changing the coolant ..................................................7-24
Checking the coolant level..........................................7-21 Engine coolant ............................................................7-22
Inverter coolant ..........................................................7-22
Recommended coolant ................................................7-23
Cruise Control System ..................................................5-72 To cancel cruise control, do one of the following ......5-74
To decrease the cruising speed ..................................5-74
To increase cruise control set speed ..........................5-73
To resume cruising speed at more than approximately 30 km/h (20 mph) ....................................................5-75
To set cruise control speed..........................................5-73
To temporarily accelerate with the cruise control on ..5-74
To turn cruise control off, do one of the following ....5-75
Declaration of Conformity ..........................................4-158 IC ........................................................................\
......4-158
Defroster ......................................................................4-\
120 Rear window defroster ..............................................4-120
Dimensions ......................................................................8-\
2
Door locks......................................................................4-\
13 Child-protector rear door lock ....................................4-16
Impact sensing door unlock system ............................4-16
Operating door locks from inside the vehicle ............4-14
Operating door locks from outside the vehicle ..........4-13
Drive mode integrated control system ..........................5-96 Hybrid vehicle ............................................................5-96
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Index
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Limitation of ECO operation ......................................5-97
When ECO is activated ..............................................5-97
Driver Attention Warning (DAW)................................5-125 Resetting the system ................................................5-127
System disabled ........................................................5-127
System malfunction ..................................................5-128
System setting and activation ..................................5-125
ECO system ..................................................................5-98 Limitation of ECO operation ......................................5-99
Plug-in hybrid vehicle ................................................5-98
When ECO is activated ..............................................5-99
Economical operation ..................................................5-130
Emergency starting ..........................................................6-5 Jump starting ................................................................6-5
Push-starting ................................................................6-6
Emission control system ................................................7-99 Crankcase emission control system ............................7-99
Evaporative emission control (including ORVR : Onboard Refueling Vapor Recovery) system ..........7-99
Exhaust emission control system ..............................7-100
Engine ........................................................................\
......8-2
Engine compartment ................................................2-6, 7-3 Engine maintenance mode (for plug-in Hybrid) ..........7-20
Starting Engine Maintenance Mode ..........................7-20
Stopping Engine Maintenance Mode..........................7-20
Engine number ................................................................8-9
Engine oil ......................................................................7-\
18 Changing the engine oil and filter ..............................7-19
Checking the engine oil level ....................................7-18
Engine start/stop button ..................................................5-7 Engine start/stop button position ..................................5-7
Illuminated engine start/stop button ............................5-7
Starting the hybrid system ............................................5-9
Explanation of scheduled maintenance items ..............7-14
Exterior overview ............................................................2-2
Forward Collision-avoidance Assist (FCA) system ......5-43 Brake operation ..........................................................5-47
FCA sensor (Front view camera)................................5-48
FCA warning message and system control ................5-45
Limitation of the system ............................................5-51
System malfunction ....................................................5-49
System setting and activation ....................................5-43
Forward Collision-avoidance Assist (FCA) system - sensor fusion type (front radar+front view camera) ..5-57Brake operation ..........................................................5-61
E
F

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Index
FCA sensor (front radar + front view camera) ..........5-62
FCA warning message and system control ................5-59
Limitation of the system ............................................5-65
System malfunction ....................................................5-64
System setting and activation ....................................5-57
Fuel filler lid (Hybrid) ..................................................4-31 Closing the fuel filler lid ............................................4-31
Emergency fuel filler lid release ................................4-34
Opening the fuel filler lid ..........................................4-31
Fuel filler lid (plug-in Hybrid) ......................................4-35 Closing the fuel filler lid ............................................4-37
Emergency fuel filler lid release ................................4-37
Opening the fuel filler lid ..........................................4-35
Fuel requirements ............................................................1-2 Do not use methanol ....................................................1-2
Fuel additives ................................................................1-3
Gasoline containing alcohol and methanol ..................1-2
Operation in foreign countries ......................................1-4
Fuses ........................................................................\
......7-53 Engine compartment fuse replacement ......................7-57
Fuse/relay panel description ......................................7-59
Inner panel fuse replacement ......................................7-55 Gross vehicle weight........................................................8-5\
HEV/PHEV powertrain ..................................................1-5
Hood ........................................................................\
......4-29
Closing the hood ........................................................4-30
Hood open warning ....................................................4-29
Opening the hood ........................................................4-29
If an accident occurs ......................................................6-29
If the engine overheats ....................................................6-7
If the engine will not start ..............................................6-4 If engine doesn't turn over or turns over slowly ..........6-4
If engine turns over normally but does not start ..........6-4
If you have a flat tire (With Tire Mobility Kit) ............6-16 Checking the tire inflation pressure ............................6-23
Components of the Tire Mobility Kit ........................6-19
Distributing the sealant ..............................................6-22
Introduction ................................................................6-17
Notes on the safe use of the Tire Mobility Kit ..........6-17
Technical Data ............................................................6-23
Using the Tire Mobility Kit ........................................6-20G
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