Kia Optima Hybrid: VESS(Virtual Engine Sound System) / Description and Operation

Description
The VESS (Virtual engine sound system) generates engine sound when you start the hybrid system.
This sound is for pedestrians to hear vehicle sound because there is no engine sound in hybrid driving.
VESS operates when vehicle speed is between 0~20km/h.
Components and Components Location

Component Location 1. Virtual engine sound system unit2. Virtual engine sound speaker ...

Virtual Engine Sound System Unit Components and Components Location

Component Location ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Description and Operation


Description Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components. Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system. These items have been integrated into ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: CVVT & Camshaft Repair procedures


Removal 1. Remove the cylinder head cover. 2. Set No.1 cylinder to TDC/compression. a. Turn the crankshaft pulley and align its groove with the timing mark "T" of the lower timing chain cover. b. Check that the mark(A) of the CVVT sprockets are in straight line on the cylinder head surface as shown in ...

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