Kia Optima Hybrid 2017 Owner's Manual page 575

Maintenance
Cooling system
Check the cooling system components,
such as the radiator, coolant reservoir,
hoses and connections for leakage and
damage. Replace any damaged parts.
Coolant (Engine/Inverter)
The coolant should be changed at the
intervals specified in the maintenance
schedule.
Automatic transaxle fluid
Automatic transaxle fluid should not be
checked under normal usage conditions.
We recommend that the automatic
transmission fluid changed by an au‐
thorized Kia dealer according to the
maintenance schedule.
NOTICE
Automatic transaxle fluid color is ba‐
sically red.
As the vehicle is driven, the auto‐
matic transaxle fluid will begin to
look darker. It is normal condition
and you should not judge the need
to replace the fluid based upon the
changed color.
9-22
CAUTION
The use of a non-specified fluid
could result in transaxle malfunction
and failure.
Use only specified automatic trans‐
axle fluid (Refer to Recommended
lubricants and capacities on page
10-11.)
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake fluid (if equipped)
Check the brake fluid level in the brake
fluid reservoir. The level should be be‐
tween MIN and MAX marks on the
side of the reservoir. Use only hydraulic
brake fluid conforming to DOT 3 or DOT
4 specification.
Parking brake (if equipped)
Inspect the parking brake system in‐
cluding the parking brake lever (or ped‐
al) and cables.
Brake discs, pads, calipers and
rotors
Check the pads for excessive wear,
discs for run out and wear, and calipers
for fluid leakage.
For more information on checking the
pads or lining wear limit, we recom‐
mend to refer to the Kia web site.
(https://www.kia-hotline.com)
Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and engine
off, check for excessive free-play in the
steering wheel.
Check the linkage for bends or damage.
Check the dust boots and ball joints for
deterioration, cracks, or damage. Re‐
place any damaged parts.
Drive shafts and boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged parts
and, if necessary, repack the grease.