Rain Sensor

Rain Sensor (AIC)
When the rain sensor is activated, the wipers are controlled automatically based on the degree of wetness (rain and snow) that is on the windshield. The driver no longer has to be concerned with which wiper speed is appropriate or turn them off when the weather turns clear.

The rain sensor is located on the windshield, in front of the rearview mirror. The rain sensor is online as soon as the ignition is placed in position 1 (KLR).

When the windshield wiper stalk switch is placed in the intermittent position the rain sensor is activated and wipes the windshield once to confirm that it is working.

The rain sensor continuously monitors the windshield for rain accumulation and signals the GM to activate the wipers based on the knurled wheel position and how fast the rain accumulates on the windshield.

The knurled wheel position signal (1-4) informs the rain sensor of the selected level of sensitivity.
- Position 1 (least sensitive) delays the wiper activation signal.
- Position 4 (most sensitive) sends the wiper activation signal sooner.

Depending on the intensity of the rain the wipers will be operated continuously as if set in the normal wiper stalk switch position regardless of the knurled wheel setting.

If the ignition switch is turned off with the wiper switch in the intermittent position, the rain sensor will only become active after the ignition is switched back on and one of the following occurs:
- The stalk switch is moved from the intermittent position and then back.
- The knurled wheel setting is adjusted.
- or the wash function is activated.

The reason for this switching strategy is to have the driver make a conscious decision to activate the system.