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No, I haven’t. I couldn’t locate the wiper control module.

Yeah, every time it rains the problem gets worse, but yesterday when it rained, it didn’t happen as often. Most of the time it was actually working fine.I found a video on how to open the windshield cowl. I’ll take it apart and check. Thanks for your advice!

Thanks, There are quite a few components in the control system. I only know about the stalk switch, BCM, and relay so far

:cry:

I finally found the installation location of this part. Although I suspect it’s the most likely cause of the problem, replacing it requires removing the dashboard, which is too difficult.

I think this is probably the closest to the real issue. Thanks a ton for pointing it out! I think I’ll try to find a video showing how to replace this part and check it out. Right now, I’m thinking either the relay’s messed up or the wiper motor’s bad, but I can’t really tell which one it is

Thanks for the heads-up, but sadly it’s already over 60,000 miles

Thank you very much for your reply,My trim is the LE base model, and it doesn’t have automatic wipers. It does look the same as in your picture, but there isn’t an intelligent position.

Thanks, The owner’s manual says that turning the MIST once will make the wipers swipe once.

No, it doesn't have auto wipers.thanks for your reply.

Hi everyone, I’m having a frustrating issue with my 2022 Toyota Sienna that I hope someone here can help me figure out. Whenever I use the wiper in MIST mode (just a single up-flick of the stalk), the wipers are supposed to swipe once—but instead, they randomly swipe between 1 and 6 times...