Rain sensor were is it located - 2006 Chrysler 300

yes, yes and yes, bingo sensors
but.... but
all else on car works , engines, car drives, all other electrics ok
battery not weak (big'n)
check fuses first
then scan the car, using any obd2 scan too at the DLC port 16pins USA?
scans may tell you why, for sure scanning while failing wiper.
the sensor my be just dirty.

Question edited for clarity and spelling.
Question moved to sub category.

Hidden under the carpet. You probably have a leak under there. It is very dangerous to work on these. You must disconnect the battery.

https://www.google.com/search?q=2009+renault+megane+drivers+airbag+sensor+location

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check the way the system is wired up as there appears that that is where the problem is located

RAIN Sensor... turns the wipers on... it's on the interior, attached to the windshield above the rear view mirror bracket.

These sensors are on the upper windshield glass, usually by the mirror.

What you have is a crankshaft position sensor that is breaking down under a hot condition .Also the sensors electromagnetic field is leaking out electrodes so when it rains for a while and the air is very damp this basically shorts out the sensor.The sensor is located on the back side of the engine, drivers side were the transmission and engine come together. I hope this will help!

a couple of thoughts:
Has your windshield just been replaced?
The sensor is up by the rear view mirror, is it plugged in all the way?
Do you have the right size wiper blades on your vehicle? (too short of a blade misses the rain sensor and does not wipe it clean)
How good are your blades? ( as above, to turn off the rain sensor the blade needs to wipe it clean)
The rain sensor works by projecting multiple inferred beams to the inside of the windshield, like a prism, they reflect back to collectors. when there is a water droplet on the outside of the windshield it changes a beams trajectory and it misses the collector thust turning on the wipers.
(yes, this all happens in that little sensor up by the rear view mirror.)
check to make sure the wiper switch is in the right position.
also....I've seen rain sensors not work properly when the hood or doors are open.
hope this helps

Rain sensor is mouted next to inside rear view mirror assembly on the windshield. The retaining ring is permanantly mounted to windshield. Disconnect connector and pull down on sensor. Do not touch the surface of the sensor.

try testing cam/crank position sensors these like to fail in rain

the reason for your wiper speed change is due to the rain sensor which controls the speed of your wipers,determined by how much rain is comming down.the rain sensor is located behind your rear view mirror.