My Tomtom Rider sat nav was bought in 2016. It used to work fine in the rain. Now after riding in the rain I have these issues. Heavy raindrops change the screen. Water is obviously getting in through the rear speaker areas and the whole device just gets damp and ceases to function. At present it is still drying out after being caught in a storm in Brazil.....that was 6 days ago and my device is still not working correctly. A motorcycle sat nav should be totally waterproof like the clock on your dash. I have other complaints re Tom tom but of a different nature. So far the lifespan of my TT for being waterproof is 2 yrs......so what happens next TT......are you going to offer to fix it, replace seals???... and how much does that cost??? I'm not in a position to send it to you for repair at the present as I'm in Brazil.