Kia Optima: Inspection - Head Lamps. Repair procedures - Lighting System - Body Electrical System - Kia Optima TF 2011-2024 Service ManualKia Optima: Inspection

1. Check-points upon head lamp failure (HID)
(1) Check the battery voltage. (Low beam will be on when the battery voltage above 9V.)
(2) Check the fuse and relay.
(3) Check the polarity of ballast. (If the polarity are changed, low beam doesn't lighten)
(4) Check the bulb connector securely.
(5) Visually bulb checking (no filament): damaged glass, damaged for upper parts and lower parts of glass tube.
(6) After (1)~(5), replace the ballast and the ignitor. (ballast assembly).
If a headlamp goes out after a period of operation but will immediately relights when the headlamp switch is cycled it is likely the HID lamp needs to be replaced.

2. Service procedure and warning (HID)
Service procedures
Replacement of lamp assembly
1. Disconnect the power connector from the lamp.
2. Remove and replace the lamp assembly.
3. Connect the power connector.
Х Disconnect the head lamp power connector to avoid high voltage.
Х Other description is the same as the halogen bulbs.
Replacement of the Bulb
1. Disconnect the power connector from the lamp. (head lamp, turn signal, head lamp leveling device)
2. Remove the lamp assembly.
3. Remove the ballast and dust cover.
4. Remove the bulb socket and replace the bulb.
5. Installation is the reverse of removal.
Х Disconnect the head lamp power connector to avoid high voltage.
Х Be careful not to damage the bulb and use genuine bulbs only.
Х Do not apply excessive force and fit it correctly.

Replacement of the Ballast (with built-in ignitor)
1. Disconnect the power connector from the lamp.
2. Remove the lamp and then the ballast and the dust cover.
3. Remove the head lamp leveling device and then the bulb socket.
4. Connect the bulb socket on the replacement ballast and install the leveling device.
5. Installation is the reverse of removal.
Х Disconnect the head lamp power connector to avoid high voltage.
Х Replace the ballast only and install the used lamp.
Х Replace the sub assembly except the ballast.
1. Power supply should be according to the rated capacity.
2. Use the rated fuse and wire.
3. Bulb socket shall be free from moisture or dirt.
4. Do not apply the ballast severe shock, water, or extreme
Х All parts should be serviced only at specified service centers.
Х HID lamp should not be installed on other cars (Dangerous, fire may occur.)

HID lamp shall not be used on other cars.(Fire may occur.)

Fire may occur when HID lamp initially lights due to the fact that arc-discharge generates high voltage (max. 30,000V) and high current (12-13A), and are different from the halogen lamp specification.

3. Understanding of color change by replacement of HID bulb.
(1) The cause of HID color change.

(Change of color is HID feature)

A. The change of color occur during mixing three Elements in the HID bulb.

B. Color Coordinates by Lifetime

C. Chemical compounds in an arc tube :
1. Xenon gas(an inert gas , protection of arc tube)
2. Mercury( increase voltage, protection of arc tube, blue in the first 3 second )
3. Metal halide
Х Natrium(Yellow) : 0.12mg
Х Scandium(Blue) : 0.06mg
Х Iodine(Halogen) : 0.02mg
(2) Change of Color by Lighting Up Time
A. It needs 4 seconds at least for stabilization.

At first, you can see the blue for 3 seconds because of Mercury.

B. After stabilization, change of color occur by metal halide.
Х 0 Hour : Yellow( Na is more than Sc. )
Х 10 Hour : Bright Blue (Na and Sc are similar ratio.)
Х 1000Hour more : Blue ( Sc is more than Na.)
C. The end of lifetime : When HID used up Natrium and Scandium, a beam of light will be dark suddenly.

so you can see the red, purple and turn on and off.

1. Durable for vibration as there is no filament.
2. HID lamp had a more long life than halogen lamp.
3. Does not operate if polarity is changed.
4. Operating input voltage : 9-16V

Head Lamps. Repair procedures

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