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Home >> Subaru >> 2021 >> Forester Base >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sunroof System >> Sunroof Control System >> Inspection

Sunroof Control System: Inspection

Symptoms Inspection steps
Water leakage
  1. Check the roof panel and the lid assembly for improper or poor sealing.
  2. Check the tube drain for clogging.
  3. Check the joints of the rail assembly & cable assembly for improper sealing and for proper installation to the body.
Booming noise, wind noise and other noise
  1. Check the lid assembly and the roof panel for improper clearance.
  2. Check the shade assembly and the trim panel sub assembly for improper clearance.
Motor and cable noise
  1. Check installing part of motor for looseness.
  2. Check gears and bearings for wear.
  3. Check cable assembly for wear.
Failure of sunroof (Motor operates properly.)
  1. Check guide rail for foreign particles.
  2. Check guide rail for improper installation.
  3. Check parts for mutual interference.
  4. Check slider for improper clinching.
  5. Check cable assembly for improper installation.
Motor does not rotate or it does not rotate normally.
  1. Check fuse for blown out.
  2. Check switch for improper function.
  3. Check harness for open or short and terminals for poor connections.
  4. Check the relay for improper operation.
  5. Check motor assembly for incorrect terminal voltage.
Incorrect reverse operation of the lid assembly Check guide rail for foreign particles.

Incorrect reverse operation of the lid assembly while driving on rough road 

The lid assembly has auto-reverse function. When the lid assembly is pushed in the opening direction with a force of 110±10 N (11.2 kgf, 24.7 lbf±1 kgf, 2.2 lbf), the glass lid moves in reverse and stops. Therefore, if you operate (open or close) the lid assembly while driving on rough road, the vibration may be judged as a force and the lid may incorrectly move in the reverse direction.

When the incorrect reverse operation is occurred repeatedly, perform inspection around the sunroof frame. If there are no problems, perform the initialization operation with following procedure.