coolant level KIA OPTIMA PLUG-IN HYBRID 2017 Owners Manual

Remaining charge time (Plug-in
hybrid)
The message is displayed to notify the
remaining time to fully charge the bat‐ tery.
EV/HEV/CHG modes (Plug-in
hybrid)
A corresponding message is displayed
when a mode is selected by pressing the HEV button.
Battery charged. Maintaining
current (Plug-in hybrid)
This message is displayed when unable
to convert to charging mode even when pressing and holding the HEV button
during EV/HEV mode driving because
the high-voltage (hybrid) battery is al‐ ready fully charged.
Low battery. Maintaining hybrid
(Plug-in hybrid)
This message is displayed when unable
to convert to EV mode even when pressing the HEV button during HEV
mode driving due to insufficient high-
voltage (hybrid) battery level.
Low battery temp. Maintaining
current (Plug-in hybrid)
This message is displayed when unable
to convert to EV mode even when pressing the HEV button during HEV
mode driving due to low battery tem‐
perature.
Charging complete. Switching to
hybrid (Plug-in hybrid)
This message is displayed automatical‐
ly converting to HEV mode due to com‐
pleted battery charging during charging mode driving.
Charger error! (Plug-in hybrid)
This messages is displayed when the
charging failed by external charger er‐
ror.
This message is for Normal charger.
The purpose of this message is to let you know the error has occurred in
charger itself not in vehicle.
Low/high system temp.
Maintaining hybrid (Plug-in hybrid)
This message is displayed when unable
to convert to EV mode even when
pressing the HEV button during HEV mode driving due to low/high system
temperature.
Switching to hybrid mode to allow
heating (Plug-in hybrid)
• When the coolant temperature is lower than -14 °C (57 °F), and you
turn the climate control On for heat‐
ing, the above message will be dis‐
played in the cluster. Then, the vehi‐ cle will automatically switch to HEV
mode.
• When the coolant temperature is higher than -14 °C (57 °F), or you
turn the climate control Off, the vehi‐
cle will automatically return to EV mode.
Wait until fuel door opens (Plug-in
hybrid)
The message is displayed when you at‐
tempt to open the fuel filler lid with the fuel tank pressurized. Wait until the
fuel tank is depressurized.
NOTICE
•It may take up to 20 seconds to
open fuel filler lid.
(Continued)

1-21
1
Hybrid system overview

You should refill the fuel tank to pre‐
vent hybrid battery damage.
Refill inverter coolant
This warning message illuminates when
the inverter coolant is nearly empty.
You should refill the inverter coolant.
Check brakes
This warning message illuminates when
the brake performance is low or the re‐ generative brake does not work prop‐
erly due to a failure in the brake sys‐
tem.
In this case, it may take longer for the brake pedal to operate and the braking
distance may become longer.
Stop vehicle and check brakes
This warning message is displayed
when a failure occurs in the brake sys‐ tem.
In this case, park the vehicle in a safe
location and we recommend you to tow
your vehicle to the nearest authorized Kia dealer and have the vehicle inspec‐
ted.
Coasting guide (if equipped)
A chime will sound and the coasting
guide indicator will blink four times to inform the driver when to take the foot
off from the accelerator by anticipating
a decelerating event* based on the analysis of driving routes and road con‐
ditions of the navigation. It encourages
the driver to remove foot from the pedal and allow coasting down the road
with EV motor only. This helps prevent
unnecessary fuel consumption and in‐ creases fuel efficiency. ❈ Example of a deceleration event is
going down an extended hill, slow‐ ing down approaching a toll booth,
and approaching reduced speed
zones.
• User settings
Press the Engine Start/Stop button
and put the shift lever in P (Park). In
the User Settings Mode, select Driv‐
ing Assist, Coasting Guide, and then On to turn on the system. Cancel the
selection of coasting guide to turn off
the system. For the explanation of
the system, press and hold the [OK]
button.
• Operation conditions To activate the system, take the fol‐
lowing procedures. Enter your desti‐
nation information on the navigation
and select the driving route. Select the ECO mode in the Integrated Driv‐
ing Control System. Then, satisfy the
following. - The driving speed should be be‐ tween 60 km/h (37 mph) and
160 km/h (99 mph).
❈ The operating speed may vary due
to difference between instrument
cluster and navigation effected by
tire inflation level.
Unplug vehicle to start (Plug-in
Hybrid)
The message is displayed when you
start the engine without unplugging
the charging cable. Unplug the charging
cable, and then start the vehicle.
Remaining charge time (Plug-in
Hybrid)
The message is displayed to notify the
remaining time to fully charge the bat‐ tery.
Shift to P to charge (Plug-in
Hybrid)
The message is displayed when the
charging connector is plugged with the
shift lever in R (Reverse), N (Neutral) or
D (Drive). Move the shift lever to P
(Park) and re-start the charging proc‐ ess.
Features of your vehicle
5-76

EV/HEV/CHG modes (Plug-in
Hybrid)
A corresponding message is displayed
when a mode is selected by pressing the HEV button.
Battery charged. Maintaining
current (Plug-in Hybrid)
This message is displayed when unable
to convert to charging mode even when pressing and holding the HEV button
during EV/HEV mode driving because
the high-voltage (hybrid) battery is al‐ ready fully charged.
Low battery. Maintaining hybrid
(Plug-in Hybrid)
This message is displayed when unable
to convert to EV mode even when
pressing the HEV button during HEV
mode driving due to insufficient high-
voltage (hybrid) battery level.
Low battery temp. Maintaining
current (Plug-in Hybrid)
This message is displayed when unable
to convert to EV mode even when pressing the HEV button during HEV
mode driving due to low battery tem‐
perature.
Charging complete. Switching to
hybrid (Plug-in Hybrid)
This message is displayed automatical‐
ly converting to HEV mode due to com‐
pleted battery charging during charging mode driving.
Charger error! (Plug-in Hybrid)
This message is displayed when the
charging failed by external charger er‐ ror.
The purpose of this message is to let
you know the error has occurred in
charger itself not in vehicle.
Low/high system temp.
Maintaining hybrid (Plug-in Hybrid)
This message is displayed when unable
to convert to EV mode even when pressing the HEV button during HEV
mode driving due to low/high system
temperature.
Switching to hybrid mode to allow
heating (Plug-in Hybrid)
• When the coolant temperature is lower than -14°C (57°F), and you
turn the climate control On for heat‐ ing, the above message will be dis‐
played in the cluster. Then, the vehi‐
cle will automatically switch to HEV
mode. • When the coolant temperature is
higher than -14°C (57°F), or you turnthe climate control Off, the vehicle
will automatically return to EV mode.
Wait until fuel door opens (Plug-in
Hybrid)
The message is displayed when you at‐
tempt to open the fuel filler lid with the fuel tank pressurized. Wait until the
fuel tank is depressurized.
NOTICE
•It may take up to 20 seconds to
open fuel filler lid.
•When the fuel filler lid is frozen
and does not open after 20 sec‐
onds at freezing temperature,
slightly tap the fuel filler lid and
then attempt to open it.
Fuel door open (Plug-in Hybrid)
This message is displayed when the
fuel filler lid is opened.
Also means "Ready to refuel".

5-77
5
Features of your vehicle

BEFORE DRIVING
Before entering vehicle
• Be sure that all windows, outsidemirror(s), and outside lights are clean.
• Check the condition of the tires.
• Check under the vehicle for any sign of leaks.
• Be sure there are no obstacles behind you if you intend to back up.
Necessary inspections
Fluid levels, such as engine oil, engine
coolant, brake fluid, and washer fluid should be checked on a regular basis,
with the exact interval depending on
the fluid. Further details are provided in Chapter 9, Maintenance.
WARNING
Driving while distracted can result ina loss of vehicle control, that maylead to an accident, severe personalinjury, and death. The driver’s pri‐mary responsibility is in the safe andlegal operation of a vehicle, and useof any handheld devices, otherequipment, or vehicle systems which
(Continued)
(Continued)
take the driver’s eyes, attention andfocus away from the safe operationof a vehicle or which are not permis‐sible by law should never be usedduring operation of the vehicle.
Before starting
• Close and lock all doors.
• Position the seat so that all controls
are easily reached.
• Adjust the inside and outside rear‐ view mirrors.
• Be sure that all lights work.
• Check all gauges.
• Check the operation of warning lights when the engine start/stop button
switch is turned to the ON position.
• Release the parking brake and make sure the brake warning light goes
out.
For safe operation, be sure you are fa‐ miliar with your vehicle and its equip‐
ment.
WARNING
All passengers must be properly bel‐ted whenever the vehicle is moving.Refer to L

Engine compartment................................................................ 9-03
Maintenance services............................................................... 9-04Owner’s responsibility.......................................................... 9-04
Owner maintenance precautions....................................... 9-04
Owner maintenance................................................................. 9-06 Owner maintenance schedule.............................................9-06
Scheduled maintenance service............................................. 9-08 Scheduled maintenance service precaution..................... 9-08
Normal maintenance schedule - for gasoline en‐ gine [for Europe (except Russia)].......................................9-09
Normal maintenance schedule - for gasoline en‐ gine [for Europe (except Russia)] (Continued)................. 9-10
Maintenance under severe usage conditions - for gasoline engine [for Europe (except Russia)]...................9-12
Normal maintenance schedule - for gasoline en‐ gine [except Europe (including Russia)]............................ 9-14
Normal maintenance schedule - for gasoline en‐ gine [except Europe (including Russia)] (Continued).......9-15
Maintenance under severe usage conditions - for gasoline engine [except Europe (including Russia)]........ 9-18
Explanation of scheduled maintenance items..................... 9-21 Engine oil and filter............................................................... 9-21
HSG (hybrid starter & generator) belt.............................. 9-21
Fuel filter (for gasoline)....................................................... 9-21
Fuel lines, fuel hoses and connections.............................. 9-21
Vapor hose (for gasoline engine) and fuel filler cap........9-21
Vacuum crankcase ventilation hoses ................................9-21
Air cleaner filter.....................................................................9-21
Spark plugs (for gasoline engine)....................................... 9-21
Cooling system...................................................................... 9-22 Coolant (Engine/Inverter).................................................... 9-22
Automatic transaxle fluid.................................................... 9-22
Brake hoses and lines........................................................... 9-22
Brake fluid ............................................................................. 9-22
Parking brake ........................................................................ 9-22
Brake discs, pads, calipers and rotors............................... 9-22
Suspension mounting bolts................................................. 9-22Steering gear box, linkage & boots/lower arm
ball joint.................................................................................. 9-22
Drive shafts and boots......................................................... 9-22
Air conditioning refrigerant................................................. 9-23
Engine oil.....................................................................................9-24 Checking the engine oil level................................................9-24
Changing the engine oil and filter...................................... 9-24
Coolant........................................................................................ 9-26 Checking the coolant level................................................... 9-26
Engine coolant....................................................................... 9-27
Inverter coolant..................................................................... 9-27
Recommended coolant.........................................................9-28
Changing the coolant............................................................ 9-29
Brake fluid ................................................................................. 9-30 Checking the brake fluid level............................................. 9-30
Washer fluid............................................................................... 9-31 Checking the washer fluid level.......................................... 9-31
Parking brake ............................................................................ 9-32 Checking the parking brake................................................. 9-32
Air cleaner.................................................................................. 9-33 Filter replacement.................................................................9-33
Climate control air filter........................................................... 9-35 Filter inspection..................................................................... 9-35
Maintenance

9

OWNER MAINTENANCE
The following lists are vehicle checks
and inspections that should be per‐
formed at the frequencies indicated to help ensure safe, dependable operation
of your vehicle.
Any adverse conditions should be
brought to the attention of your dealer as soon as possible.
These Owner Maintenance Checks are
generally not covered by warranties
and you may be charged for labor, parts and lubricants used.
Owner maintenance schedule
When you stop for fuel:
• Check the engine oil level.
• Check the coolant level in the coolant reservoir.
• Check the windshield washer fluid level.
• Look for low or under-inflated tires.
WARNING
Be careful when checking your en‐gine coolant level when the engine ishot. Scalding hot coolant and steam
(Continued)
(Continued)
may blow out under pressure. Thiscould cause burns or other seriousinjury.
While operating your vehicle:
• Note any changes in the sound of the exhaust or any smell of exhaust
fumes in the vehicle.
• Check for vibrations in the steering wheel. Notice any increased steering
effort or looseness in the steering
wheel, or change in its straight-
ahead position.
• Notice if your vehicle constantly turns slightly or L

NORMAL MAINTENANCE SCHEDULE - FOR GASOLINE ENGINE [FOR EUROPE (EXCEPT RUSSIA)]
The following maintenance services must be performed to ensure good emission control and performance. Keep receipts for
all vehicle emission services to protect your warranty. Where both mileage and time are shown, the frequency of service is determined by whichever occurs first.
NO.ITEMREMARK
*1 Coolant (Engine / Inverter) When adding coolant, use only deionized water or soft water for your vehicle
and never mix hard water in the coolant filled at the factory. An improper
coolant mixture can result in serious malfunction or engine damage.
*2 Engine oil and engine oil filter Check the engine oil level and leak every 500 km (350 miles) or before start‐ing a long trip.
*3 Fuel additives (Gasoline) Kia recommends that you use unleaded gasoline which has an octane rating
of RON (Research Octane Number) 95 / AKI (Antiknock Index) 91 or higher
(for Europe) or Octane Rating of RON (Research Octane Number) 91 / AKI(Antiknock Index) 87 or higher (except Europe).
For customers who do not use good quality gasolines including fuel additives
regularly, and have problems starting or the engine does not run smoothly,
one bottle of additives added to the fuel tank at every 15,000 km (for Eu‐rope, Australia and New Zealand)/10,000 km (except Europe, Australia andNew Zealand).
Additives are available from your authorized Kia dealer along with informa‐
tion on how to use them. Do not mix other additives.
*4 HSG (Hybrid Starter & Generator) belt Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation
and replace if necessary. If drive belt noise occurred, readjust drive belt ten‐
sion before replace.
*5 Spark plug For your convenience, it can be replaced prior to it's interval when you domaintenance of other items.



9-09
9
Maintenance

NORMAL MAINTENANCE SCHEDULE - FOR GASOLINE ENGINE [EXCEPT EUROPE (INCLUDING
RUSSIA)]
The following maintenance services must be performed to ensure good emission control and performance. Keep receipts for
all vehicle emission services to protect your warranty. Where both mileage and time are shown, the frequency of service is
determined by whichever occurs first.
NO.ITEMREMARK
*1 Coolant (Engine/Inverter) When adding coolant, use only deionized water or soft water for your vehicle
and never mix hard water in the coolant filled at the factory. An improper
coolant mixture can result in serious malfunction or engine damage.
*2 Engine oil and engine oil filter Check the engine oil level and leak every 500 km (350 miles) or before start‐ing a long trip.
*3 Fuel additives (Gasoline) Kia recommends that you use unleaded gasoline which has an octane rating
of RON (Research Octane Number) 95 / AKI (Antiknock Index) 91 or higher
(for Europe) or Octane Rating of RON (Research Octane Number) 91 / AKI(Antiknock Index) 87 or higher (except Europe).
For customers who do not use good quality gasolines including fuel additives
regularly, and have problems starting or the engine does not run smoothly,
one bottle of additives added to the fuel tank at every 15,000 km (for Eu‐rope, Australia and New Zealand)/10,000 km (except Europe, Australia andNew Zealand).
Additives are available from your authorized Kia dealer along with informa‐
tion on how to use them. Do not mix other additives.
*4 HSG (Hybrid Starter & Generator) belt Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation
and replace if necessary. If drive belt noise occurred, readjust drive belt ten‐
sion before replace.
*5 Spark plug For your convenience, it can be replaced prior to it's interval when you domaintenance of other items.

Maintenance

9-14

COOLANT
The high-pressure cooling system has
a reservoir filled with year round anti‐
freeze coolant. The reservoir is filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and be‐ fore traveling to a colder climate.
CAUTION
•When the engine overheats fromlow engine coolant, suddenly add‐ing engine coolant may causecracks in the engine. To preventdamage, add engine coolant slowlyin small quantities.
•Do not drive with no engine cool‐ant. It may cause water pump fail‐ure and engine seizure, etc.
Checking the coolant level
WARNING
nRemoving radiator cap
•Never attempt to remove the radi‐ator cap while the engine is oper‐ating or hot. Doing so might leadto cooling system and engine dam‐age. Also, hot coolant or steamcould cause serious personal in‐jury.
•Turn the engine off and wait untilit cools down. Use extreme carewhen removing the radiator cap.Wrap a thick towel around it, andturn it counterclockwise slowly tothe first stop. Step back while thepressure is released from the cool‐ing system.When you are sure all the pressurehas been released, press down onthe cap, using a thick towel, andcontinue turning counterclockwiseto remove it.
(Continued)
(Continued)
•Even if the engine is not operating,do not remove the radiator cap orthe drain plug while the engine andradiator are hot. Hot coolant andsteam may still blow out underpressure, causing serious injury.
The engine coolant and/or inverter
coolant level is influenced by the hybrid system temperature. Before checking
or refilling the engine coolant and/or in‐
verter coolant, turn the hybrid vehicle off.
WARNING
The electric motor (cool‐ing fan) is controlled byengine coolant tempera‐ture, refrigerant pressureand vehicle speed. It maysometimes operate evenwhen the engine is notrunning.
(Continued)
Maintenance
9-26

(Continued)
Use extreme caution when workingnear the blades of the cooling fan sothat you are not injured by a rotat‐ing fan blades. As the engine coolanttemperature decreases, the electricmotor will automatically shut off.This is a normal condition.If your vehicle is equipped with GDI,the electric motor (cooling fan) mayoperate until you disconnect thenegative battery cable.
Engine coolant
0+'
Check the condition and connections of
all cooling system hoses and heater ho‐ ses. Replace any swollen or deteriora‐
ted hoses.
The coolant level should be filled be‐
tween F (Full) and L (Low) marks on the side of the coolant reservoir when the
engine is cool.
If the coolant level is low, add enough
specified coolant to provide protection against freezing and corrosion. Bring
the level to F (Full), but do not overfill.
If frequent additions are required, we
recommend that the system be inspec‐
ted by an authorized Kia dealer.
Inverter coolant
Check the condition and connections of
all cooling system hoses. Replace any swollen or deteriorated hoses.
The coolant level should be filled be‐
tween MAX and MIN marks on the side
of the coolant reservoir when the en‐ gine is cool.
If the coolant level is low, add enough
specified coolant to provide protection
against freezing and corrosion. Bring the level to MAX, but do not overfill. If
frequent additions are required, we rec‐
ommend that the system be inspected
by an authorized Kia dealer.

9-27
9
Maintenance