engine KIA OPTIMA PLUG-IN HYBRID 2017 Service Manual

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•Sitting improperly or out of posi‐tion can result in serious or fatalinjury in a crash. All occupantsshould sit upright with the seatback in an upright position, cen‐tered on the seat cushion withtheir seat belt on, legs comforta‐bly extended and their feet on thefloor until the vehicle is parked andthe Engine Start/Stop button is inthe OFF position.
•The SRS air bag system must de‐ploy very rapidly to provide pro‐tection in a crash. If an occupant isout of position because of notwearing a seat belt, the air bagmay forcefully contact the occu‐pant causing serious or fatal inju‐ries.
Passenger’s front air bag ON/OFF
switch (if equipped)
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The passenger’s front air bag can be
deactivated by the passenger’s front air bag ON/OFF switch if a child re‐
straint is installed on the front pas‐
senger's seat or if the front passeng‐ er's seat is unoccupied by a person.
To ensure the safety of your child, the
passenger’s front air bag must be de‐
activated when it should be necessary to install a rearward facing child seat
on the front passenger seat in excep‐
tional circumstances.
To deactivate or reactivate the pas‐
senger’s front air bag:
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Safety features of your vehicle
4-54

To deactivate the passenger’s front air
bag, insert the master key into the passenger’s front air bag ON/OFF
switch and turn it to the OFF position.
The passenger’s front air bag OFF indi‐
cator will illuminate and stay on until the passenger’s front air bag is reacti‐
vated.
To reactivate the passenger’s front air
bag, insert the master key into the passenger’s front air bag ON/OFF
switch and turn it to the ON position.
The passenger’s front air bag OFF indi‐ cator will go out.
WARNING
The front air bag ON/OFF switchcould turn by using a similar smallrigid device. Always check the statusof the front air bag ON/OFF switchand passenger's front air bag OFF in‐dicator.
NOTICE
•When the passenger’s front air
bag ON/OFF switch is set to the
ON position, the passenger’s front
air bag is activated and a child or
infant seat should not be installed
on the front passenger seat.
•When the passenger’s front air
bag ON/OFF switch is set to the
OFF position, the passenger’s
front air bag is deactivated.
CAUTION
•If the passenger’s front air bagON/OFF switch is not workingproperly, the air bag warning light() on the instrument panel willilluminate and the passenger'sfront air bag OFF indicator () willnot illuminate. (The passenger'sfront air bag ON indicator comeson and goes off after approxi‐mately 60 seconds.) The SRS Con‐trol Module reactivates the pas‐senger’s front air bag and the pas‐senger’s front air bag will inflate infrontal impact crashes even if thepassenger’s front air bag ON/OFFswitch is set to the OFF position.If this occurs, we recommend thatthe system be inspected by an au‐thorized Kia dealer.
•If the SRS air bag warning lightblinks or does not illuminate whenthe engine start/stop button is inthe ON position, or if it illuminateswhile the vehicle is being driven,we recommend that the systembe inspected by an authorized Kiadealer.

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4
Safety features of your vehicle

WARNING
•The driver is responsible for theproper position of the passenger’sfront air bag ON/OFF switch.
•Deactivate the passenger's frontair bag only when the EngineStart/Stop button is in the OFF po‐sition, or the malfunction may oc‐cur in the SRS Control Module. Andthere may be a danger that thedriver's and/or front passenger’sand/or side and curtain air bagmay fail to trigger, or not triggercorrectly during a collision.
•Never install a rearward facingchild seat on the front passenger'sseat unless the passenger's frontair bag has been deactivated. Theinfant or child could be severely in‐jured or killed by an air bag deploy‐ment in case of an accident.
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•Even though your vehicle is equip‐ped with the passenger's front airbag ON/OFF switch, do not install achild restraint system in the frontpassenger's seat. A child restraintsystem must never be placed inthe front seat. Children who aretoo large for child restraint sys‐tems should always occupy therear seat and use the available lap/shoulder belts. Children are affor‐ded the most safety in the eventof an accident when they are re‐strained by a proper restraint sys‐tem in the rear seat.
•As soon as the child seat is no lon‐ger needed on the front passeng‐er's seat, reactivate the front pas‐senger's air bag.
Side air bag
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❈The actual air bags in the vehicle
may differ from the illustration.
Safety features of your vehicle
4-56

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•To prevent unexpected deploy‐ment of the side air bag that mayresult in personal injury, avoid im‐pact to the side impact sensorwhen the engine start/stop buttonis in the ON position.
•If the seat or seat cover is dam‐aged, we recommend that thesystem be serviced by an author‐ized Kia dealer.
Curtain air bag
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❈The actual air bags in the vehicle
may differ from the illustration. Curtain air bags are located along both
sides of the roof rails above the front and rear doors.
They are designed to help protect the
heads of the front seat occupants and
the rear outboard seat occupants in certain side impact collisions.
The curtain air bags are designed to
deploy during certain side impact colli‐
sions, depending on the crash severity, angle, speed and point of impact. How‐
ever, when the side deployment
threshold is satisfied at front impact, the side air bags may deploy.
The curtain air bags may deploy on the
side of the impact side.
The curtain air bags are not designed
to deploy in all side impacts or rollover situations.
NOTICE
nif equipped with rollover sen‐
sor
•Both sides of the curtain air bags
deploy in certain rollover situa‐
tions.
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Safety features of your vehicle
4-58

WARNING
•Do not hit or allow any objects toimpact the locations where airbags or sensors are installed.This may cause unexpected airbag deployment, which could re‐sult in serious personal injury ordeath.
•If the installation location or angleof the sensors is altered in anyway, the air bags may deploywhen they should not or they maynot deploy when they should,causing severe injury or death.Therefore, do not try to performmaintenance on or around the airbag sensors. We recommend thatthe system be serviced by an au‐thorized Kia dealer.
•Problems may arise if the sensorinstallation angles are changed dueto the deformation of the frontbumper, body or front door and Cpillars where side collision sensorsare installed. We recommend thatthe system be serviced by an au‐thorized Kia dealer.
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•Your vehicle has been designed toabsorb impact and deploy the airbag(s) in certain collisions. Instal‐ling bumper guards or replacing abumper with non-genuine partsmay adversely affect your vehi‐cle's collision and air bag deploy‐ment performance.
WARNING
nif equipped with rollover sen‐sor
If your vehicle is equipped with sideand curtain air bags, set the EngineStart/Stop button in the OFF posi‐tion when the vehicle is being towed.The side and curtain air bags maydeploy when the engine start/stopbutton is in the ON position, and therollover sensor detects the situationas a rollover.
Air bag inflation conditions
Front air bags
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Front air bags are designed to inflate in
a frontal collision depending on the in‐ tensity, speed or angles of impact of
the front collision.

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4
Safety features of your vehicle

NOTICE
nwithout rollover sensor
However, side and/or curtain air
bags may inflate when the vehicle is
rolled over by a side impact collision,
if the vehicle is equipped with side
air bags and curtain air bags.
SRS Care
The SRS is virtually maintenance-free
and so there are no parts you can safe‐
ly service by yourself. If the SRS air bag
warning light does not illuminate, or
continuously remains on, we recom‐ mend that the system be inspected by
an authorized Kia dealer.
WARNING
•Modification to SRS components orwiring, including the addition ofany kind of badges to the pad cov‐ers or modifications to the bodystructure, can adversely affectSRS performance and lead to pos‐sible injury.
•For cleaning the air bag pad cov‐ers, use only a soft, dry cloth orone which has been moistenedwith plain water. Solvents or clean‐ers could adversely affect the airbag covers and proper deploymentof the system.
•No objects should be placed overor near the air bag modules on thesteering wheel, instrument panel,and the front passenger's panelabove the glove box, because anysuch object could cause harm ifthe vehicle is in a crash severeenough to cause the air bags to in‐flate.
•If the air bags inflate, we recom‐mend that the system be replacedby an authorized Kia dealer.
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•Do not tamper with or disconnectSRS wiring, or other componentsof the SRS system. Doing so couldresult in injury, due to accidentalinflation of the air bags or by ren‐dering the SRS inoperative.
•If components of the air bag sys‐tem must be discarded, or if thevehicle must be scrapped, certainsafety precautions must be ob‐served. An authorized Kia dealerknows these precautions and cangive you the necessary informa‐tion. Failure to follow these pre‐cautions and procedures could in‐crease the risk of personal injury.
•If your car was flooded and hassoaked carpeting or water on theflooring, you shouldn't try to startthe engine; we recommend thatyou contact an authorized Kiadealer.
Additional safety precautions
•Never let passengers ride in the cargoarea or on top of a folded down backseat. All occupants should sit upright,
fully back in their seats with their
seat belts on and their feet on the
floor.

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4
Safety features of your vehicle

SMART KEY
Record your key number
The key code number is stamped on the
key code tag attach‐ed to the key set.
Should you lose your keys, we recom‐
mend that you contact an authorized Kia dealer. Remove the key code tag
and store it in a safe place. Also, record
the key code number and keep it in a safe place (not in the vehicle).
Key operations
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09.09.
• Used to start the engine.
• Used to lock and unlock the doors.
• Used to lock and unlock the glove box. • Used to lock and unlock the trunk.
To remove the mechanical key, press
and hold the release button (1) and re‐ move the mechanical key (2).
To reinstall the mechanical key, put the
key into the hole and push it until a
click sound is heard.
WARNING
nIgnition key (smart key)
Leaving children unattended in a ve‐hicle with the ignition key (smartkey) is dangerous even if the key isnot in the ignition or the start but‐ton is in the ACC or ON position. Chil‐dren copy adults and they couldplace the key in the ignition or pressthe start button. The smart keywould enable children to operatepower windows or other controls, oreven make the vehicle move, whichcould result in serious bodily injuryor even death. Never leave the keysin your vehicle with unsupervisedchildren, when the engine is running.
WARNING
We recommend that you use partsfor replacement from an authorizedKia dealer. If an aftermarket key isused, the ignition switch may not re‐turn to ON after START. If this hap‐pens, the starter will continue to op‐erate causing damage to the startermotor and possible fire due to ex‐cessive current in the wiring.
Immobilizer system
Your vehicle may be equipped with an
electronic engine immobilizer system to
reduce the risk of unauthorized vehicle use.
Your immobilizer system is comprised
of a small transponder in the ignition
key and electronic devices inside the vehicle.
With the immobilizer system, whenever
the engine start/stop button is
changed to the ON position, it checks and determines and verifies if the igni‐
tion key is valid or not.
If the key is determined to be valid, the
engine will start.
If the key is determined to be invalid, the engine will not start.
Features of your vehicle
5-04

To activate the immobilizer system:
Change the engine start/stop button to
the OFF position. The immobilizer sys‐ tem activates automatically. Without a
valid ignition key for your vehicle, the
engine will not start.
To deactivate the immobilizersystem:
Change the engine start/stop button to
the ON position.
WARNING
In order to prevent theft of your ve‐hicle, do not leave spare keys any‐where in your vehicle. Your immobil‐izer password is a customer uniquepassword and should be kept confi‐dential. Do not leave this numberanywhere in your vehicle.
NOTICE
When starting the engine, do not
use the key with other immobilizer
keys around. Otherwise the engine
may not start or may stop soon af‐
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ter it starts. Keep each key sepa‐
rately in order to avoid a starting
malfunction.
CAUTION
Do not put metal accessories nearthe ignition switch. Metal accesso‐ries may interrupt the transpondersignal and may prevent the enginefrom being started.
NOTICE
If you need additional keys or lose
your keys, we recommend that you
consult an authorized Kia dealer.
CAUTION
The transponder in your ignition keyis an important part of the immobil‐izer system. It is designed to giveyears of trouble-free service. How‐
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ever, you should avoid exposure tomoisture, static electricity and roughhandling. Immobilizer system mal‐function could occur.
CAUTION
Do not change, alter or adjust theimmobilizer system because it couldcause the immobilizer system tomalfunction. We recommend thatthe system be serviced by an au‐thorized Kia dealer. Malfunctionscaused by improper alterations, ad‐justments or modifications to theimmobilizer system are not coveredby your vehicle manufacturer war‐ranty.

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5
Features of your vehicle

Smart key function
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Lock (1)
All doors (and trunk) are locked if thelock button is pressed.
If all doors (and trunk) are closed, the
hazard warning lights will blink once to
indicate that all doors (and trunk) are locked.
Unlock (2)
All doors (and trunk) are unlocked if the
unlock button is pressed.
The hazard warning lights will blink twice to indicate that all doors (and
trunk) are unlocked. However, after pressing this button,
the doors (and trunk) will lock automat‐
ically unless you open any door within 30 seconds.
Trunk unlock (3)
The trunk is unlocked if the button ispressed for more than 1 second.
The hazard warning lights will blink
twice to indicate that the trunk is un‐
locked.
However, after pressing this button, the trunk will lock automatically unless
you open the trunk within 30 seconds.
Also, once the trunk is opened and then
closed, the trunk will lock automatically.
Smart key system operation
09.
With a smart key, you can lock or un‐
lock a door (and trunk) and even start the engine without inserting the key.
Carrying the smart key, you may lock
and unlock the vehicle doors (and
trunk). Also, you may start the engine. Refer to the following for more details.
Features of your vehicle
5-06

Locking
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Pressing the button of the front out‐
side door handles with all doors (and trunk) closed and any door unlocked,
locks all the doors (and trunk). The haz‐
ard warning lights will blink once to in‐ dicate that all doors (and trunk) are
locked. The button will only operate
when the smart key is within 0.7 ~ 1 m (28 ~ 40 in) from the outside door han‐
dle. If you want to make sure that a
door has locked or not, you should check the door lock button inside the
vehicle or pull the outside door handle.
Even though you press the button, the
doors will not lock and the chime sounds if any of the following occurs: • The smart key is in the vehicle.
• The ENGINE START/STOP button is in
the ACC or ON position.
• Any door except the trunk is opened.
Unlocking
Pressing the button of the front out‐
side door handles with all doors (and trunk) closed and locked, unlocks all the
doors (and trunk). The hazard warning
lights will blink twice to indicate that all doors (and trunk) are unlocked. The
button will only operate when the
smart key is within 0.7 ~ 1 m (28 ~ 40 in) from the outside door han‐
dle.
When the smart key is recognized in
the area of 0.7 ~ 1 m (28 ~ 40 in) from the front outside door handle, other
people can also open a door without
possession of the smart key.
Trunk unlocking
If you are within 0.7 ~ 1 m (28 ~ 40 in)
from the outside trunk handle, with your smart key in possession, the trunk
will unlock and open when you press
the trunk handle switch.
The hazard warning lights will blink twice to indicate that the trunk is un‐
locked. Also, once the trunk is opened and then
closed, the trunk will lock automatically.
Start-up
You can start the engine without in‐
serting the key. For detailed informa‐ tion refer to L