Toyota Sienna Quiz
Windshield / windowglass

Window defogger switch

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
4steps
~24min
2/5difficulty
Done 0 of 4

INSPECTION

1. INSPECT WINDOW DEFOGGER SWITCH

INSPECT WINDOW DEFOGGER SWITCH
  1. Check the defogger switch illuminates.

Standard

Standard

If the result is not as specified, replace the switch assembly or bulb.

INSPECT WINDOW DEFOGGER SWITCH
  1. Check the defogger timer.
  2. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3.
  3. Connect positive (+) lead from the battery to terminal 1 through a 1.4 W test bulb.
  4. Push the outer defogger switch ON then check that the switch and the test bulb turn off after thy illuminate for 12 to 18 minutes.

    If the result is not as specified, replace the switch assembly

Test yourself

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