Editing Rain sensor (section)

==Automotive sensors==
[[File:General Motors automatic rain sensor.jpg|right|thumb|General Motors automatic rain sensor installed on a 1955 Chevrolet Bel Air convertible.]]
In 1958, the [[Cadillac|Cadillac Motor Car Division]] of [[General Motors Corporation|General Motors]] experimented with a water-sensitive switch that triggered various electric motors to close the convertible top and raise the open windows of a specially-built [[Cadillac Eldorado|Eldorado Biarritz]] model, in case of rain. The first such device appears to have been used for that same purpose in a concept vehicle designated [[Le Sabre concept car|Le Sabre]] and built around 1950–51.

General Motors' automatic rain sensor for convertible tops was available as a dealer-installed option during the 1950s for vehicles such as the [[Chevrolet]] Bel Air.<ref>{{cite web| url=https://www.mecum.com/lots/FL0118-313091/1957-chevrolet-bel-air-convertible/| title=1957 CHEVROLET BEL AIR CONVERTIBLE| accessdate=June 30, 2019}}</ref>

For the 1996 model year, Cadillac once again equipped cars with an automatic rain sensor; this time to automatically trigger the windshield wipers and adjust their speed to conditions as necessary.<ref>{{Cite web |date=2022-11-22 |title=All you need to know about rain sensing wipers- %sitename% |url=https://carorbis.com/blog/rain-sensing-wipers/ |access-date=2023-06-26 |website=carorbis.com |language=English}}</ref>

In December 2017 [[Tesla, Inc.|Tesla]] started rolling out an [[Over-the-air programming|OTA update]] (2017.52.3) enabling their [[Tesla, Inc.#Autopilot|AP2.x]] cars to utilize the onboard cameras to passively detect rain without the use of a dedicated sensor.

Most vehicles with this feature have an ''auto'' position on the control column.<ref>{{Cite web |title=How to Use Memory Seats {{!}} Vehicle Support {{!}} Buick |url=https://www.buick.com/index/support/vehicle-support/climate-seats-and-controls/seats/how-to-use-memory-seats.html |access-date=2023-10-19 |website=www.buick.com |language=en-US}}</ref>