Kia Optima Hybrid: Charging System / Repair procedures

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Engine Electrical System / Charging System / Repair procedures

On-vehicle Inspection

•	Check that the auxiliary 12V battery cables are connected to the correct terminals.

•	Disconnect the auxiliary 12V battery cables when the battery is given a quick charge.

•	Never disconnect the auxiliary 12V battery while the engine is running.

Check The Auxiliary 12V Battery Terminals And Fuses

1.	Check that the auxiliary 12V battery terminals are not loose or corroded.

2.	Check the fuses for continuity.

Check Discharge Warning Light Circuit

1.	Warm up the engine and then turn it off.

2.	Turn off all accessories.

3.	Turn the ignition switch "ON". Check that the discharge warning light is lit.

4.	Start the engine and Check that the light goes off. If the light does not go off as specified, then refer to the LDC diagnostics section for further diagnosis of auxiliary 12V battery charging system problem.

Charging System

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Auxiliary 12V Battery Components and Components Location

Components 1. Battery tray2. Auxiliary 12V Battery3. Battery upper bracket ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Telemetics Unit (TMU) Repair procedures

Removal • Take care not to scratch the crash pad and related parts. 1. Disconnect the negative (-) battery terminal. 2. Remove the AVN head unit. (Refer to AVN System - "AVN Head Unit") 3. Disconnect the TMU unit and GPS connector (A). 4. Remove the TMU unit (B) after loosening the nuts. ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Rear Glass Defogger Switch Repair procedures

Inspection 1. The rear glass defogger switch inputs can be checked using the GDS. 2. To check the input value of rear glass defogger switch, select option "Body Control Module". 3. To consult the present input/output value of BCM, "Current DATA". It provides information of BCM input/output conditions ...