I've had my q7 since new. I change all fluids and oil filter 3 times a year, spring, July 4th and fall when winterizing. This year as usual all changed and she fired right up. I dumped her in and I kept getting random warning beeps. All gauges we're fine, trim fluid was half full so I capped it off. Still had the problem. Our lake that I live on is about 400 acres and it would beep about three different times on a full circle running about 28mph. I found a forum and replaced the idle air controll switch.....problem solved......now a month later I get a random beep under power in rough water and it shuts the boat down. Mostly while pulling a wake boarder. I am assuming its a sensor that do to the tilting of the boat it setting it off. I unplugged the two wires that run to the bottom of stern drive bottle......still no solution. I found the oil preassure switch and unplugged.....fired it up and gauge says 0......next is to drive it and see if it stops. But I'm not sure I'm unplugging the right wires to check......any ideas?