See also:
Components and Components Location
Component Location
1. Rear glass defogger relay (Interior junction box)
2. Rear glass defogger switch (A/C controller)
3. Rear glass defogger
...
Inspection
1.
Check the engine oil quality.
Check the oil deterioration, entry of water, discoloring
of thinning. If the quality is visibly poor, replace the oil.
...
Troubleshooting
Troubleshooting
Symptom
Suspect Area
Remedy
Water leaks from sunroof
Dirt accumulated in drain tube
Clear dirt inside of drain
...