
Recommended SAE viscosity
numberEngine oil viscosity (thickness) has
an effect on fuel economy and cold
weather operating (engine start and
engine oil flowability). Lower viscosi-
ty engine oils can provide better fuel
economy and cold weather perform-
ance, however, higher viscosity
engine oils are required for satisfac-
tory lubrication in hot weather.Using oils of any viscosity other than
those recommended could result in
engine damage.
When choosing an oil, consider the
range of temperature your vehicle
will be operated in before the next oil
change. Proceed to select the rec-
ommended oil viscosity from the
chart.
CAUTION
Always be sure to clean the area
around any filler plug, drainplug, or dipstick before check-ing or draining any lubricant.This is especially important industy or sandy areas and whenthe vehicle is used on unpavedroads. Cleaning the plug anddipstick areas will prevent dirtand grit from entering theengine and other mechanismsthat could be damaged.
Temperature Range for SAE Viscosity Numbers
Temperature
Engine Oil°C
(°F)-30 -20 -10 0 10 20 30 40 50 -10 0 20 40 60 80 100 120
5W-20, 5W-30
20W-50
10W-30
15W-40
87
Specifications & Consumer information
For better fuel economy, it is recommended to use the engine oil of a
viscosity grade SAE 5W-20 (API SM / ILSAC GF-4). However, if the
engine oil is not available in your country, select the proper engine oil
using the engine oil viscosity chart.

Index
4I
Economical operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-44
Emergency starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7Jump starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Push-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Emission control system . . . . . . . . . . . . . . . . . . . . . . . . 7-91
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 8-2
Engine compartment. . . . . . . . . . . . . . . . . . . . . . . . . 2-6,7-3
Engine number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-\
25 Changing the engine oil and filter . . . . . . . . . . . . . . 7-26
Checking the engine oil level . . . . . . . . . . . . . . . . . . 7-25
Engine start/stop button . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 ENGINE START/STOP button position . . . . . . . . . . 5-6
Illuminated ENGINE START/STOP button . . . . . . . 5-6
Explanation of scheduled maintenance items . . . . . . . 7-21
Exterior overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Fuel filler lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28 Closing the fuel filler lid . . . . . . . . . . . . . . . . . . . . . 4-28
Emergency fuel filler lid release . . . . . . . . . . . . . . . 4-30
Opening the fuel filler lid. . . . . . . . . . . . . . . . . . . . . 4-28
Fuel requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Do not use methanol . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Gasoline containing alcohol and methanol . . . . . . . . 1-3
Gasoline containing MMT . . . . . . . . . . . . . . . . . . . . . 1-4
Operation in foreign countries . . . . . . . . . . . . . . . . . . 1-5
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 7-57 Engine compartment fuse panel . . . . . . . . . . . . . . . 7-66
Engine room (Sub-relay box). . . . . . . . . . . . . . . . . . 7-70
Fuse/relay panel description. . . . . . . . . . . . . . . . . . . 7-62
Instrument fuse panel . . . . . . . . . . . . . . . . . . . . . . . . 7-62
Gross vehicle weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
HEV powertrain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 4-26 Closing the hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Opening the hood . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
How to use this manual . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Hybrid Kia Hybrid system . . . . . . . . . . . . . . . . . . . . . . . . . . . H2
State of charge (SOC) . . . . . . . . . . . . . . . . . . . . . . . . H3
Optima hev energy flow . . . . . . . . . . . . . . . . . . . . . . . H4
The componets of hybrid vehicle . . . . . . . . . . . . . . . . H9
The air intake of hybrid battery . . . . . . . . . . . . . . . . H15
The ECO level display mode . . . . . . . . . . . . . . . . . . . H2
The EV MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84
The ECO GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
E
F
G
H

Index
8I
Recommended cold tire inflation pressures . . . . . . . 7-43
Tire care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43\
Tire maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-48
Tire replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47
Tire rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45
Tire sidewall labeling . . . . . . . . . . . . . . . . . . . . . . . . 7-48
Tire traction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-48
Wheel alignment and tire balance . . . . . . . . . . . . . . 7-46
Wheel replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 7-48
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. 6-25 Emergency towing . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
Removable towing hook (front) . . . . . . . . . . . . . . . . 6-26
Towing service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25
Trip computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74 Fuel Economy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
One time driving information mode . . . . . . . . . . . . 4-77
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
Trip A/B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76\
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . 4-18 Closing the trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Emergency trunk lid release cable . . . . . . . . . . . . . . 4-19
Emergency trunk safety release . . . . . . . . . . . . . . . . 4-20
Opening the trunk. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Vehicle break-in process . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Vehicle certification label . . . . . . . . . . . . . . . . . . . . . . . . 8-8 Vehicle identification number (VIN) . . . . . . . . . . . . . . . 8-8
Vehicle load limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-53
Certification label . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-56
Tire and loading information label. . . . . . . . . . . . . . 5-53
Vehicle weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-58
Warning and indicator lights. . . . . . . . . . . . . . . . . . . . . 4-78 Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-86
Warning lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-78
Washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32 Checking the washer fluid level . . . . . . . . . . . . . . . . 7-32
Welcome system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-92 Interior light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-92
Welcome light (position light) . . . . . . . . . . . . . . . . . 4-92
Welcome light (room lamp, positon light) . . . . . . . . 4-92
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
4-21 Power window lock button. . . . . . . . . . . . . . . . . . . . 4-24
Power windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Windshield defrosting and defogging. . . . . . . . . . . . . 4-119 Automatic climate control system . . . . . . . . . . . . . 4-119
Defogging logic . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-120
Winter driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50 Carry emergency equipment . . . . . . . . . . . . . . . . . . 5-52
Change to "winter weight" oil if necessary . . . . . . . 5-51
Check battery and cables . . . . . . . . . . . . . . . . . . . . . 5-51
Check spark plugs and ignition system . . . . . . . . . . 5-51
V
W