Toyota Sienna Quiz
Windshield / windowglass

Problem symptoms table

In this manual: Windshield / windowglass
Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
25steps
~150min
4/5difficulty
Done 0 of 25

WINDOW DEFOGGER SYSTEM

Symptom

Suspected area
w/ Deicer: Front window deicer does not operate.

(indicator light ON)

  1. FR DEF fuse
  2. Front window deicer relay
  3. Front window deicer wire
  4. Wire harness
w/ deicer: Front window deicer does not operate.

(indicator light OFF)

  1. FR DEF fuse
  2. Front window deicer relay
  3. Front window deicer wire
  4. Hazard warning signal switch assembly (Defogger switch)
  5. Wire harness
Rear window defogger does not operate (indicator light ON)
  1. HTR fuse
  2. Rear window defogger relay
  3. Rear window deicer wire
  4. Rear window defogger does not operate (indicator light OFF)Wire harness
Rear window defogger does not operate (indicator light OFF)
  1. HTR fuse
  2. Rear window defogger relay
  3. Hazard warning signal switch assembly (Defogger switch)
  4. Rear window defogger wire
  5. Wire harness
w/ Mirror Heater: Mirror heater does not operate (indicator light ON
  1. MIR HTR fuse
  2. Outer rear view mirror assembly
  3. Wire harness
w/ Mirror Heater: Mirror heater does not operate (indicator light OFF)
  1. MIR HTR fuse
  2. Hazard warning signal switch assembly (Defogger switch)
  3. Outer rear view mirror assembly
  4. Wire harness

Test yourself

A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.