Kia Optima Hybrid: 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: Passenger Airbag (PAB) Module Repair procedures


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Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Thermostat Repair procedures


Removal and Installation     Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat. 1. Drain engine coolant so its level is below thermostat. 2. Disconnect the radiator lower hose ...

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