Kia Optima: Charging System / Wireless Power Charger (WPC)

Kia Optima DL3 2019-2025 Service and Repair Manual / Body Electrical System / Charging System / Wireless Power Charger (WPC)

Specifications

Items	Specification
Operating voltage	DC 9 - 16 V
Operating temperature	-22 to 167 °F (-30 to +75 °C)
Dark current	MAX. 1 mA
Output power	7 - 10 W
Output frequency	115 kHz (iPhone : 127.7 kHz)

Description and operation

Description

Wireless Power Charger System

During IG ON, battery voltage is supplied to the wireless power charger system to transmit an output of 5 W to mobile phone.

Mobile phones certified with the wireless charging standard WPC (Qi 1.2.4) or equipped with an exclusive wireless charging case can be used.

Wireless Power Charging System Flow Chart

1.	Supply vehicle power.

2.	Convert to AC. Generate electromagnetic field in 1st coil.

3.	Generate induced current in power receiver from electromagnetic induction.

4.	Generate AC in 2nd coil.

5.	Convert to DC.

6.	Charge battery.

System Configuration Diagram

1.	Instrument cluster : Alerts about contact with mobile phone.

2.	Wireless charging indicator : Displays the charging status.

3.	Wireless power charger (WPC) : Negligence of mobile phone, foeign object detection (FOD) decision.

4.	Integrated body control unit (IBU) : Stops charging during the activation of Low Frequency (LF).

Wireless Power Charger system Major Functions

Charging Function

(1)

Activation method

a.	Close all car doors.

b.	Switch vehicle power to IG ON.

c.	Place the wireless charging-enabled mobile phone on the tray.

(2)

Charging status display

Mode

Charging LED display

Remark

Stand by for charging

LED turned OFF

Charging in process

Amber LED turned ON

Charging completed

Green LED turned ON

Charging error
(FOD/High Temperature)

Amber LED blinks

–	Amber LED blink (500ms ON/500ms OFF period)

–	FOD detection : 10 times blink and pause for 50 sec → FOD status re-check

–	High Temp. : 10 times blink when not charged by high temperature. LED OFF till the ERROR is released.

Mobile phone neglect alert function

(1)

Activation method

a.	Ignition OFF when the phone is still charging.

b.	Check if there is a phone on wireless charging unit.

c.	Warning message if the phone is left in the WPC charge pad and the drivers door is opened or if the phone is left for more than 1 minute.

Overheating prevention

(1)

Activation method

If the thermistor temperature inside the wireless charging module rises above a certain level (158 °F (70 °C)), charging will stop to protect the mobile phone battery.

The amber LED of the charging display lamp blinks 10 times for 10 seconds.

After the thermistor temperature falls (LED OFF till the high temperature ERROR is released), charging will re-start.

When the charging function is restarted, the amber LED of the charging display lamp will be turned on.

Foreign matter detection

(1)

Charging will be disabled if there are coins or other metallic objects between the wireless charging unit and the mobile phone.

[Foreign matter]

•	Foreign matter : All metallic objects such as coins, clips, and precious metals

•	The amber LED of the charging display lamp blinks 10 times for 10 seconds, and then it is turned off for 50 seconds (total 60 seconds).

•	The process is repeated for every 60 seconds.

Be careful as touching the foreign matter by hand may cause burns.

(2)

When system has detected foreign matter and charging has stopped, the wireless charging function will resume immediately after removing the foreign matter.

When the charging function is restarted, the amber LED of the charging display lamp will be turned on.

IBU unit low frequency (LF) interference prevention

This function prevents interference between the wireless charging frequency and smart key unit frequency band.

(1)

Wireless charging is stopped when the door is open or the IBU unit is in LF mode (searching for smart key).

e.g. Wireless charging function is stopped if the driver carries the smart key out of the vehicle during IG ON.

Charging will stop and the amber LED of the charging display lamp will turn off.

(2)	It will return to normal operating status when the LF mode of the IBU unit is completed.

6.	Turn the wireless charging function ON/OFF with USM. ※ Tailgate applies to RV vehicle models.

Wireless Power Charger (WPC) System Protection

Item	Condition	Status
Protects against low/high voltage	Protects and stops charging under 8.5 V and over 16.5 V	LED OFF (Stops operation)
Protects against low/high voltage	Charges between 9 - 16 volts	LED OFF (Stops operation)
Protects against reverse voltage	Protects and stops charging in case of reverse voltage	LED OFF (Stops operation)
Protects against overcurrent	Protects and stops charging in case of detecting 4 amps	Amber LED blinks
Protects against overheating	Protects and stops charging in case of detecting 158°F (70°C) by internal temperature sensor of wireless charging module	Amber LED blinks
Protects against overheating	Resumes under 149°F (65°C)	Amber LED blinks
Foreign matter (Coins, clips, precious metals, etc.)	Protects and stops charging in case of detecting foreign matter (overheating prevention)	Amber LED blinks
Prevents frequency interference	Protects and stops charging by activating IBU in case door or trunk is open	LED OFF (Stops operation)
Prevents frequency interference	Resumes in 3.5 seconds after all doors and trunk are closed and IBU operation is completed	LED OFF (Stops operation)
Alert for contact with mobile phone	In case of smart phone on the charging pad when opening the door after ignition OFF	Displays warning message on the instrument panel (for about 4 seconds)

※ Tailgate applies to RV vehicle models.

Schematic diagrams

Connector and Terminal function

Repair procedures

Inspection

The body electrical system can be more quickly diagnosed for troubles by using the vehicle diagnostic system (KDS).

KDS provides the following information.

(1)	Self diagnosis : Inspects and displays diagnostic trouble code (DTC)

(2)	Sensor data : Checks the system input/output value status

(3)	Forced operation : Checks the system operating status

(4)	Additional function : Controls system options, zero point adjustment and other functions

2.	To diagnose the vehicle by using the diagnostic equipment, select "vehicle model" and "wireless power charger system" to be inspected.

3.	To inquire the current status of input/output values, select the "Sensor Data" menu The input/output values of the sensors corresponding to the selected module can be checked.

4.	To perform forced operation of the selected module input, select "Actuation Test".

5.	To inquire the cause of trouble for each module by self diagnosis, select 'Diagnostic Trouble Code'.

Removal

Wireless Power Charger (WPC)

1.	Disconnect the negative battery terminal.

2.	Remove the console upper cover. (Refer to Body - "Floor Console Assembly")

3.	Remove the wireless power charger pad (A).

4.	Disconnect the all connectors from the console floor switch complete. (A) : Main connector fixing fastener (B) : Console floor switch complete connector (C) : Wireless charging indicator connector

5.	Remove the console cup holder assembly (A) by loosening the mounting screws.

6.	Remove the EPB switch assembly (A) by loosening the mounting screws.

7.	Remove the console floor switch complete (A).

8.	Remove the wireless power charger connector (A).

9.	Loosen the wireless power charger mounting screws.

10.	Remove the wireless power charger (A) by pushing the hooks in the direction of arrow.

Wireless Power Charger (WPC) Pan

1.	Disconnect the negative battery terminal.

2.	Remove the console upper cover. (Refer to Body - "Floor Console Assembly")

3.	Remove the wireless power charger pad (A).

4.	Disconnect the all connectors from the console floor switch complete. (A) : Main connector fixing fastener (B) : Console floor switch complete connector (C) : Wireless charging indicator connector

5.	Remove the console cup holder assembly (A) by loosening the mounting screws.

6.	Remove the wireless power charger pan cover (A) by loosening the mounting screws.

7.	Disconnect the wireless power charger pan connector (A).

8.	Remove the wireless power charger pan (B) by loosening the mounting screws.

Installation

1.	Install in the reverse order of removal.

USB Charger

Schematic diagrams Connector and Terminal function Repair procedures Removal [Floor Console Tray] 1. Disconnect the negative battery terminal. ...

Wireless Charging Indicator

Schematic diagrams Connector and Terminal function Pin Function 1 Ground 2 LED charging lamp (Gre ...

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