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Wiper Deicer System: Inspection

SYMPTOM CHART

Symptom Repair order
Wiper deicer does not operate.
  1. Fuse (F/B No. 4, 9)
  2. Wiper deicer relay
  3. Wiper deicer switch
  4. Wiring harness
  5. Body integrated unit

Refer to "Rear Window Defogger" for inspection. < Ref. to INSPECTION , Rear Window Defogger.>

NOTE: Wiper deicer system can be customized on the Subaru Select Monitor.
SYSTEM REFERENCE

System name Initial setting Customize setting
Wiper deicer timer OFF after 15 min. Continuous operation(1)
(1) When one of the following conditions occurs, continuous operation is suspended and turned off after 15 min.
  • Ambient temperature at 5°C (41°F) or more continues for 10 seconds
  • Malfunction occurs on ambient sensor.
  • Vehicle speed below 15 km/h (9 MPH) continues 15 min.
  • Malfunction occurs in CAN communication.