Kia Optima Hybrid: Engine Control/Fuel System

CVVT (Continuously Variable Valve Timing) System Description and Operation

Description Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine ...

General Safety Information and Caution

Safety Precaution     Since hybrid vehicles contain a high voltage battery, if the high voltage system or vehicles are handled incorrectly, this might lead to a serious accidents like electric ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Troubleshooting


Troubleshooting SymptomSuspect AreaRemedy (Refer to page)Water leaks from sunroofDeteriorated roof lid weatherstripReplaceExcessive roof lid-to-body clearance and improperly fitted weatherstripAdjustWind noise around sunroofLoose or deformed deflector, gaps in body workRe-tighten adjust or replaceNoise ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Rear Hub - Carrier Repair procedures


Replacement 1. Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported. 2. Remove wheel nuts, rear wheel and tire from rear hub. Tightening torque: 88.2 ~ 107.8 N.m (9.0 ~ 11.0 kgf.m, 65.0 ~ 79.5 lb-ft)     Be careful not to damage to the wheel nuts when removing ...

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