I've never seen this. How does the machines detect a pickup and/or any rubbish on the tray?It's called top brush interrupt on my Ryko SoftGloss when it detects an open bed and won't allow the top brush to keep spinning and retracts, on my Profile, it's the same principle the top brush stays above the bed until it reaches the cab of the pickup truck and starts washing.
Yes - I think most all machines have a pickup truck bed avoidance. They all go about it a little differently though.Don't they all float above the bed? I had a Wesumat built in 2005. It was the biggest piece of crap that I ever owned, but the brush didn't drop into the bed. The Mark VII softwash that replaced it (Just as good as the Wesumat was bad), didn't either. I can't imagine any brush machine that drops into beds would be on the market long.