Kia Optima: Rear Glass Defogger Printed Heater. Repair procedures - Rear Glass Defogger - Body Electrical System - Kia Optima TF 2011-2020 Service ManualKia Optima: Rear Glass Defogger Printed Heater. Repair procedures

Inspection

Wrap tin foil around the end of the voltmeter test lead to prevent damaging the heater line. Apply finger pressure on the tin foil, moving the tin foil along the grid line to check for open circuits.

1. Turn on the defogger switch and use a voltmeter to measure the voltage of each heater line at the glass center point. If a voltage of approximately 6V is indicated by the voltmeter, the heater line of the rear window is considered satisfactory.

2. If a heater line is burned out between the center point and (+) terminal, the voltmeter will indicate 12V.

3. If a heater line is burned out between the center point and (-) terminal, the voltmeter will indicate 0V.

4. To check for open circuits, slowly move the test lead in the direction that the open circuit seems to exist. Try to find a point where a voltage is generated or changes to 0V. The point where the voltage has changed is the open-circuit point.

5. Use an ohmmeter to measure the resistance of each heater line between a terminal and the center of a grid line, and between the same terminal and the center of one adjacent heater line. The section with a broken heater line will have a resistance twice as that in other sections. In the affected section, move the test lead to a position where the resistance sharply changes.

Repair Of Broken Heater Line

Prepare the following items:

1. Conductive paint.
2. Paint thinner.
3. Masking tape.
4. Silicone remover.
5. Using a thin brush:

Wipe the glass adjacent to the broken heater line, clean with silicone remover and attach the masking tape as shown. Shake the conductive paint container well, and apply three coats with a brush at intervals of about 15 minutes apart. Remove the tape and allow sufficient time for drying before applying power. For a better finish, scrape away excess deposits with a knife after the paint has completely dried. (Allow 24 hours).


Components and Components Location
Component Location 1. Rear glass defogger relay (Engine room relay box) 2. Rear glass defogger switch (A/C controller) 3. Rear glass defogger ...

Rear Glass Defogger Switch. Repair procedures
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See also:

Special Service Tools
Special Service Tools Tool (Number and name)IllustrationUse09861-31100Sealany cut-out toolCutting windshield sealant(use with 09861-31200)09861-31200Sealant cutting bladeCutting windshield seala ...

Instrument Cluster. Schematic Diagrams
Circuit Diagram ...

Seat warmer (if equipped)
The seat warmer is provided to warm the rear seats during cold weather. With the ignition switch in the ON position, push either of the switches to warm the seat. During mild weather or under co ...

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