Fig. 1.67. Control circuit with adjustable pause in intermittent operation mode: 1 – pause ring regulator
Set the windscreen wiper control lever to the "INT" position and select the pause duration between wiper strokes by turning the ring regulator (Fig. 1.67).
Fig. 1.68. Rain sensor sensitivity control mode: 1 – ring regulator; 2 – rain sensor
Controls for external lighting and signaling devices, windscreen and headlight wipers and washers, and electric rear window heater The sensitivity of the rain sensor can be changed by rotating the ring control on the wiper control lever (Fig. 1.68). From the middle position (corresponds to the normal sensitivity of the sensor) turn the knob towards the (+) mark to increase sensitivity and towards the (–) mark to decrease sensitivity of the sensor.
The automatic wiper control mode may not work if the temperature of the rain sensor is about -10°C or lower, or about +85°C or higher. If the windshield is coated with a water-repellent compound, the rain sensor may incorrectly estimate the amount of precipitation on the glass. This may lead to disruption of the normal operation of the windshield wiper in automatic mode.
If dirt or other foreign substances (for example, ice or road salt particles) stuck to the windshield above the rain sensor, or the windshield is covered with frost, this may cause the windshield wipers to turn on automatically. However, if the wiper blades are unable to remove ice, dirt or other foreign matter from the glass, the automatic wiper control mode will turn off. In such cases, it is necessary to turn on the continuous wiper mode by moving the control lever to the first or second detent position, or remove ice, dirt or other foreign matter manually before returning the wiper to the automatic mode.