I recently bought a 2015 Legacy 3.6 with EyeSight. I love the car especially the Eyesight option. The dealer told me not to use RainX on the windshield because it would mess with the camer optics. Anyone know if this true or not?

naturgeon,

 

I would suspect that its true, first because the dealership told you not to use RainX.

 

Second, from my experience with using RainX, that it must leave some sort of film on the glass to make the rain lose its surface tension and bead up and run off just with gravity, which slowly declines over a month's time or so.

 

Basically if I had a car  equipped with Eye Sight, I wouldn't use RainX on its front windshield after being told not to by the dealership. Why mess with a good thing?

Just don't use the Rain-X on the area in front of the camera(s).  You should be safe to use it in the areas that the wipers cover.  But I don't see how it would mess with the camera's optics.

Edited March 27, 201610 yr by keith3267

I sent an e-mail to MySubaru.com and asked them if this was true.  I'll let you know if they answer.

I'm curious why / how it interferes. I've seen it fog on just the right conditions, or is it the moving droplets? I like rainX. Mostly I just use the washer fluid kind, as the manually applied kind is too much work, and usually guarantees that it won't rain for a month.... it will be a long time before I have a car with eyesight anyway, but I am curious.

Got an answer:

 

Dear Keith,

Thank you for your email to Subaru of America, Inc.

I
did have the opportunity to review your question regarding the Subaru
Eyesight System with our Technical Services Department and they advised
me that Rain X will not interfere with the operation of this system.


Thanks again and please let me know should you have any additional questions.


Sincerely,

Jody Cullen
Subaru of America, Inc.
Customer/Retailer Services Department
1-800-SUBARU3 (1-800-782-2783)
Service Request Number: 1-14631961941
 

I just got a 2016 Forester with Eyesight, after my 1994 Loyale was totaled last month.

 

My dealer told me not to use Rain X as well.

Since you both have bought new Subaru's, you can sign up at www.MySubaru.com.  This is Subaru's official website.  There are some benefits for doing that.  Then you can ask them for yourself.  Maybe if enough people do that, Subaru will tell the dealers to stop doing that.