Kia Optima: Body Electrical System / Horn

Kia Optima DL3 2019-2021 Service and Repair Manual / Body Electrical System / Horn


Operating voltage
9 - 16 V
Current consumption
MAX 5.0 A
At 12 V
Sound level
111 ± 3 dB
At 13 V, 2 m
Insulation resistance
By 500 V megameter

Components and components location
Component Location

1. Horn switch
2. Engine room junction block (Horn fuse)
3. Horn (Low pitch)
4. Horn (High pitch)

Repair procedures

Disconnect the negative battery terminal.


Remove the front bumper assembly.

(Refer to Body - "Front Bumper assembly")


Disconnect the horn connector (A).


Remove the horn (B) by loosening the bolt.

Tightening torque :

9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

[Low pitch]

[High pitch]


Install in the reverse order of removal.


The relay on the horn of this vehicle is implanted into the metal core block PCB of the engine room relay block.


The semi-conductor type relay inserted in the PCB is impossible to replace. If the relay needs to be replaced, replace the metal core box and conduct a test on it.

Head Up Display (HUD) Unit
Schematic diagrams Connector and Terminal Function Repair procedures Removal    • ...

Ignition Switch Assembly
Repair procedures Removal 1. Disconnect the negative battery terminal. 2. Remove the steering column upper & lower shroud panel. (Refer to Bo ...

Other information:

Kia Optima DL3 2019-2021 Owner's Manual: System setting and activation

System setting • The driver can activate the FCA by placing the ignition switch to the ON position and by selecting: 'User Settings → Driver Assistance → Forward Collision-Avoidance Assist' The FCA system deactivates, when the driver cancels the system setting. The warning light illum ...

Kia Optima DL3 2019-2021 Owner's Manual: Seat belt - Driver's 3-point system with emergency locking retractor

To fasten your seat belt: To fasten your seat belt, pull it out of the retractor and insert the metal tab (1) into the buckle (2). There will be an audible "click" when the tab locks into the buckle. The seat belt automatically adjusts to the proper length only after the lap belt portion ...

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