Sep 18, 2010 (9 years ago)
It's usually the water drains at bulkhead / scuttle panel that get blocked causing build up of water . Here are some ideas from Skoda owners with same fault . Should help you .
There are 2 rubber drains from the scuttle to the engine bay, 1 on the left side of the engine bay as you look at it, just to the left of and below the brake fluid resevoir (it's round).
The other drain is below and slightly to the left of the ECU on the other side of the car (it's square).This one was blocked on my car, but only found it after I'd knackered the 3 scuttle cover clips.
I was getting water through below the glovebox; only just unblocked the drain, so can't tell you if it worked.
I would think that leaves have blocked the drain holes under the scuttle cover (black plastic bit under the windscreen). When it rains hard the water can't escape through the blocked holes quick enough and gets into the cabin through the heater air intake, which is behind the glovebox. Open the bonnet , remove the fixings and lift the front edge of the cover and you should be able to clear the drains on both sides. Hope that helps :thumbup: