Has anyone ever had water get into a car from behind the dash? I think its coming through the blowers somehow! Is this a common fault with A3's? I think it is also causing the electrical problems I'm having also. Dash lights and controls flashing on and off and a relay or something clicking loudly under the driver side of the dash. This causes the speedo and rev counter not to work until the heater has been on for a bit then the problem goes away

Any advice is welcome here gents as I'm standing by with the jerry can and matches!