Hi,

When I use the button to send washer in the windshield, it sprays to the rear window.
But it is also sprayed in the rear window when I use the rear window button.
In my opinion, this excludes mixed up connections or tubing.

The last thing done to the vehicle was an update based on a recall for nothing that had anything to do with the washer and wipers.

Any idea what I could look for?