engine coolant KIA Optima 2015 4.G User Guide

What to do in an emergency
86
IF THE ENGINE OVERHEATS
If your temperature gauge indicates
overheating, you will experience a
loss of power, or hear loud pinging or
knocking, the engine is probably too
hot. If this happens, you should:
1.Pull off the road and stop as soonas it is safe to do so.
2.Place the shift lever in P (automat- ic transaxle) and set the parking
brake. If the air conditioning is on,
turn it off.
3.If engine coolant is running out under the vehicle or steam is com-
ing out from underneath the hood,
stop the engine. Do not open the
hood until the coolant has stopped
running or the steaming has
stopped. If there is no visible loss
of engine coolant and no steam,
leave the engine running and
check to be sure the engine cool-
ing fan is operating. If the fan is not
running, turn the engine off. 4.Check to see if the water pump
drive belt is missing. If it is not
missing, check to see that it is
tight. If the drive belt seems to be
satisfactory, check for coolant leak-
ing from the radiator, hoses or
under the vehicle. (If the air condi-
tioning had been in use, it is nor-
mal for cold water to be draining
from it when you stop).
5.If the water pump drive belt is bro- ken or engine coolant leaks, stop
the engine immediately and call
the nearest authorized Kia dealer
for assistance. 6.If you cannot find the cause of the
overheating, wait until the engine
temperature has returned to nor-
mal. Then, if coolant has been lost,
carefully add coolant to the reser-
voir to bring the fluid level in the
reservoir up to the halfway mark.
7.Proceed with caution, keeping alert for further signs of overheat-
ing. If overheating happens again,
call an authorized Kia dealer for
assistance.
Serious loss of coolant indicates
there is a leak in the cooling system
and this should be checked as soon
as possible by an authorized Kia
dealer.
WARNING - Under the hood
While the engine is running,
keep hair, hands and clothing
away from moving parts such
as the fan and drive belts.
WARNING - Radiator cap
Do not remove the radiator cap
when the engine is hot. This can
allow coolant to be blown out of
the opening and cause serious
burns.

Maintenance
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Maintenance services . . . . . . . . . . . . . . . . . . . . . . . . 7-4
• Owner’s responsibility . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
. . . . . . . . . . . . . . . . . 7-5
Owner maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Scheduled maintenance service. . . . . . . . . . . . . . . . 7-8
Explanation of scheduled maintenance items . . . 7-25
Engine oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
. . . . . . . . . . . . . . . . . . . 7-29
. . . . . . . . . . . . . . . 7-30
Engine coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31
. . . . . . . . . . . . . . . . . . . . . 7-31
. . . . . . . . . . . . . . . . . . . . . . . . . 7-33
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
7-34
. . . . . . . . . . . . . . . . . . 7-34
Washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35
. . . . . . . . . . . . . . . . . 7-35
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36

Air cleaner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37
Climate control air filter . . . . . . . . . . . . . . . . . . . . 7-39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39
Wiper blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-\
44
. . . . . . . . . . . . . . . . . . . . . . . 7-44
. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-46
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-46\
Tires and wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
7-47
. . . . . . . 7-47

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
. . . . . . . . . . . . . . . 7-50
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52
. . . . . . . . . . . . . . . . . . . . . . . . . 7-52
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
7-61

Light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-79
. . . . . . . . . . . . . . . . . . . . . . . 7-79
. . . . . . . . . . . . 7-83
. . . . . . . . 7-85
7

73
Maintenance
ENGINE COMPARTMENT
1. Engine coolant reservoir
2. Engine oil filler cap
3. Brake fluid reservoir
4. Air cleaner
5. Fuse box
6. Positive battery terminal
7. Negative battery terminal
8. Windshield washer fluid reservoir
9. Radiator cap
10. Engine oil dipstick
OTF074002N/OYF071200N
■
■2.4L Engine
■
■ 2.0L Engine
* The actual engine room in the vehicle may differ from the illustration.

Maintenance
67
OWNER MAINTENANCE
The following lists are vehicle checks
and inspections that should be per-
formed by the owner or an author-
ized Kia dealer at the frequencies
indicated to help ensure safe,
dependable operation of your vehi-
cle.
Any adverse conditions should be
brought to the attention of your deal-
er as soon as possible.
These Owner Maintenance Checks
are generally not covered by war-
ranties 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 coolantreservoir.
Check the windshield washer fluid level.
Look for low or under-inflated tires.
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 steer-
ing effort or looseness in the steer-
ing wheel, or change in its straight-
ahead position.
Notice if your vehicle constantly turns slightly or “pulls” to one side
when traveling on smooth, level
road.
When stopping, listen and check for unusual sounds, pulling to one
side, increased brake pedal travel
or “hard-to-push” brake pedal.
If any slipping or changes in the operation of your transaxle occurs,
check the transaxle fluid level.
Check the automatic transaxle P (Park) function.
Check the parking brake.
Check for fluid leaks under your vehicle (water dripping from the air
conditioning system during or after
use is normal).
WARNING - Hot coolant
Be careful when checking your
engine coolant level when the
engine is hot. Scalding hot
coolant and steam may blow
out under pressure.

77
Maintenance
At least monthly:
Check the coolant level in theengine coolant reservoir.
Check the operation of all exterior lights, including the stoplights, turn
signals and hazard warning flash-
ers.
Check the inflation pressures of all tires including the spare.
At least twice a year
(i.e., every Spring and Fall) :
Check the radiator, heater and air conditioning hoses for leaks or
damage.
Check the windshield washer spray and wiper operation. Clean
the wiper blades with clean cloth
dampened with washer fluid.
Check the headlight alignment.
Check the muffler, exhaust pipes, shields and clamps.
Check the lap/shoulder belts for wear and function.
Check for worn tires and loose wheel lug nuts.
At least once a year :
Clean the body and door drainholes.
Lubricate the door hinges and check the hood hinges.
Lubricate the door and hood locks and latches.
Lubricate the door rubber weather- strips.
Check the air conditioning system.
Check the power steering fluid level.
Inspect and lubricate automatic transaxle linkage and controls.
Clean the battery and terminals.
Check the brake fluid level.

Maintenance
20
7
204,000 km (127,500 miles) or 102 months
❑ Rotate tire
❑ Inspect battery condition
❑ Inspect air cleaner filter
❑ Inspect vacuum hose
❑ Replace engine oil and filter (2.4 GDI)
(204,000 km (127,500 miles) or 204 months)
❑ Add fuel additive *
1
(12,000 km (7,500 miles) or 12 months)
❑ Inspect cooling system hoses and connections
❑ Inspect brake pedal free play
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.
(Continued)
❑Replace climate control air filter
(for evaporator and blower unit)
❑ Replace air cleaner filter
❑ Replace engine oil and filter (2.4 GDI)
(192,000 km (120,000 miles) or 192 months)
❑ Replace coolant
(First, 200,000 km (120,000 miles) or 120 months
after every 40,000 km (25,000 miles) or 24 months)
❑ Add fuel additive *
1
(12,000 km (7,500 miles) or 12 months)
❑ Inspect cooling system hoses and connections
❑ Inspect brake pedal free play
❑ Inspect all latch, hinges and locks
NORMAL MAINTENANCE SCHEDULE
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

Maintenance
22
7
No check, No service required
❑ Automatic transaxle fluid (if equipped)
240,000 km (150,000 miles) or 120 months
❑Rotate tire
❑ Inspect battery condition
❑ Inspect vacuum hose
❑ Inspect air conditioning refrigerant
❑ Inspect brake hoses and lines
❑ Inspect drive shafts and boots
❑ Inspect exhaust pipe and muffler
❑ Inspect front brake disc/pads, calipers and rotors
❑ Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑ Inspect brake/clutch (if equipped) fluid
❑ Inspect fuel filter *
2
❑Inspect fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *2
❑Inspect rear brake disc/pads, parking brake
❑ Inspect vapor hose and fuel filler cap, fuel tank
❑ Inspect manual transaxle fluild (if equipped)
❑ Inspect drive belts
(First, 96,000 km (60,000 miles) or 48 months
after every 24,000 km (15,000 miles) or 12 months)
(Continued)
(Continued)
❑ Replace climate control air filter
(for evaporator and blower unit)
❑ Replace air cleaner filter
❑ Replace engine oil and filter (2.4 GDI)
(240,000 km (150,000 miles) or 240 months)
❑ Replace coolant
(First, 200,000 km (120,000 miles) or 120 months
after every 40,000 km (25,000 miles) or 24 months)
❑ Add fuel additive *
1
(12,000 km (7,500 miles) or 12 months)
❑ Inspect cooling system hoses and connections
❑ Inspect brake pedal free play
❑ Inspect all latch, hinges and locks
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.
NORMAL MAINTENANCE SCHEDULE

Maintenance
26
7
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.
Air cleaner filter
A Genuine Kia air cleaner filter is
recommended when the filter is
replaced.
Spark plugs
Make sure to install new spark plugs
of the correct heat range.
Valve clearance
Inspect excessive valve noise and/or
engine vibration and adjust if neces-
sary. An authorized Kia dealer
should perform the operation.
Cooling system
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.

731
Maintenance
ENGINE COOLANT
The high-pressure cooling system
has a reservoir filled with year-round
antifreeze 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 before traveling to a colder cli-
mate.Checking the coolant level
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should be filled
between F (MAX) and L (MIN) 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 protec-
tion against freezing and corrosion.
Bring the level to F (MAX), but do not
overfill. If frequent coolant addition is
required, see an authorized Kia deal-
er for a cooling system inspection.
WARNING - Cooling fan
Use caution when
working near the
blade of the cooling
fan. The electric
motor (cooling fan) is
controlled by engine coolant
temperature, refrigerant pres-
sure and vehicle speed. It may
sometimes operate even when
the engine is not running.
OTF070006

Maintenance
32
7
Recommended engine coolant
When adding coolant, use only
deionized water or soft water for
your vehicle and never mix hard
water in the coolant filled at the fac-
tory. An improper coolant mixture
can result in serious malfunction or
engine damage.
The engine in your vehicle has alu- minum engine parts and must be
protected by an ethylene-glycol-
based coolant to prevent corrosion
and freezing.
DO NOT USE alcohol or methanol coolant or mix them with the spec-
ified coolant.
Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of the
solution. For mixture percentage, refer to the
following table.
OTF072007
-15°C (5°F) 35
65
-25°C (-13°F) 40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40
Ambient
Temperature Mixture Percentage (volume)
Antifreeze Water
WARNING
Radiator cap
Do not remove the radiator cap
when the engine and radiator
are hot. Scalding hot coolant
and steam may blow out under
pressure.