System Description [09/2014 - 10/2015]

HINT: 

The windshield wiper switch assembly is a momentary type switch. The lever position naturally returns to the initial position (NEUTRAL).

Fig 1: Windshield Wiper Switch Lever Position

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Off control
   1. Forcibly turns the wipers off.
2. DOWN control
   1. Changes the wipers from HI to LO operation, and from LO operation to off. When the wipers are already off, MIST (one single wipe) operates.

      HINT: 

      When intermittent operation is being performed during AUTO control, MIST operates, and during continuous operation, the operation state is maintained.

3. UP control
   1. Changes the wipers from off to LO operation, and from LO to HI operation.

      HINT: 

      • During AUTO control, AUTO control switches to LO operation.
      • During HI operation, the operation state is maintained.
4. HI control
   1. Forcibly switches the wipers to HI operation.

1. AUTO wiper ON/OFF switch
   1. By turning the AUTO wiper ON/OFF switch at the end of the windshield wiper switch assembly to on, the rain sensing auto wiper function switches on and the auto wiper indicator on the windshield wiper switch assembly illuminates. The rain sensing semi-auto wiper function automatically operates the wipers when rain is detected.
2. Rain sensor sensitivity adjustment function
   1. When the AUTO wiper ON/OFF switch is on, the rain sensor sensitivity and wiper operation timing can be adjusted by operating the auto sensitivity adjustment volume of the windshield wiper switch assembly.
3. Vehicle speed response intermittent timing adjustment function
   1. When the AUTO wiper ON/OFF switch is on, the intermittent operation of the wipers changes according to vehicle speed. The intermittent operation can be adjusted by operating the auto sensitivity adjustment volume.

1. When the power switch is on (IG) and the headlights are illuminated, if the headlight cleaner switch is turned on, the headlight cleaner switch signal is output to the headlight cleaner control relay, and the headlight cleaner control relay operates the headlight cleaner motor and pump assembly. This helps to remove dirt and to aid the LED light, which does not release much heat compared to a halogen light, in melting snow.
2. The headlight cleaner system also operates when the front washer switch is first operated with the headlights on after the power switch is on (IG).

1. When the amount of washer fluid has decreased, "Low Washer Fluid" is displayed on the multi-information display in the combination meter assembly according to a signal from the level warning switch assembly installed to the washer tank.