Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Component Function Check
- CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
With CONSULT
- Turn ignition switch ON.
- Select "DATA MONITOR" mode of "ENGINE" using CONSULT.
- Select "LOAD SIGNAL" and check indication as per the following conditions.
Monitor item Condition Indication LOAD SIGNAL Rear window defogger switch ON ON OFF OFF
Is the inspection result normal?
YES
GO TO STEP 2 .
NO
Proceed to DIAGNOSIS PROCEDURE .
- CHECK LIGHTING SWITCH FUNCTION
With CONSULT
Check "LOAD SIGNAL" indication as per the following conditions.
Monitor item Condition Indication LOAD SIGNAL Lighting switch ON at 2nd position ON OFF OFF Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Proceed to DIAGNOSIS PROCEDURE .
- CHECK HEATER FAN CONTROL SWITCH FUNCTION
With CONSULT
Select "HEATER FAN SW" and check indication as per the following conditions.
Monitor item Condition Indication HEATER FAN SW Heater fan control switch ON ON OFF OFF Is the inspection result normal?
YES
INSPECTION END
NO
Proceed to DIAGNOSIS PROCEDURE .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.