Can I use Rain-X washer fluid with Rain Sensor?

[khelms_98]

I know people have asked this before, but none of the questions really pertained to the rain sensor. I'd just like to know if the Rain-X in the washer fluid will adversely affect the functionality of the Rain sensor. ONE guy on an M5 forum said don't use it, but that was just one person, I haven't heard that anywhere else. The kind I'll be using is green. Any thoughts?

[rayxi]

Works for me. The sensor shouldn't be affected since the active ingredient that coats the glass is optically transparent.

[mrkbbd]

The rain-x washer fluid seems to work great

[SANguru]

why would washer fluid affect the rain sensor which is on the inside??

Originally Posted by khelms_98

I know people have asked this before, but none of the questions really pertained to the rain sensor. I'd just like to know if the Rain-X in the washer fluid will adversely affect the functionality of the Rain sensor. ONE guy on an M5 forum said don't use it, but that was just one person, I haven't heard that anywhere else. The kind I'll be using is green. Any thoughts?

[rayxi]

Originally Posted by SANguru

why would washer fluid affect the rain sensor which is on the inside??

The sensor is on the inside but it measures light through the windshield reflected by water droplets on the outside. The fear was that the rain-x coating would cause reflection of light and fool the sensor into thinking it was wet.

[khelms_98]

Originally Posted by rayxi

The sensor is on the inside but it measures light through the windshield reflected by water droplets on the outside. The fear was that the rain-x coating would cause reflection of light and fool the sensor into thinking it was wet.

Exactly....that was my worry.

[SANguru]

no worries... I've been using it on my M5 with no problems.

Originally Posted by khelms_98

Exactly....that was my worry.