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

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Body Electrical System / 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: Instrument Cluster Schematic Diagrams

Circuit Diagram ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Relay Box (Engine Compartment) Repair procedures

Inspection Power Relay Test (Type A) – Do not use pliers. – Pliers will damage the relays, which could cause the engine to stall or not start. – Carefully remove the relay using the relay puller. Check for continuity between the terminals. A : Rear defogger relay B : EWP relay C : ...