I used the Lazerous method for changing the fan on daughters 2009 Fabia. Drilling the two holes was a brilliant idea, I cannot work out how you knew where to drill! Used htm139's photos and 20mm hole saw without centering bit since there are plenty of cables to hit. Bought a new (not OE) fan unit off t'internet for £30, arrived next day. Almost silent. Further info: Apart from the 4 silver T20 self tappers holding in the radio, there are another 10 black T20s, including the 2 holding the upper cubby unit in. Once the radio surround is out there are 7 T25 bolts, two of which are hiding under the cover at the LH side of the dash, There is another under a little cover at the lower LH side of the dash. I also removed the two T20 bolts hidden by the radio shroud and loosened the two either side of the fuse box. On a previous job (resistor unit swop) we made a pair of little cardboard chutes to get the 3 T30 bolts out of the air bag, with no risk of dropping them, so did the same again (daughter's idea). Used T10 to get the 4 self tappers out of the fan casing, they also have 5.5mm heads but could not get a socket in. Ended up with 5 T10 screws, puzzled were the 5th came from! Pulled the bottom of dash back about 120mm and fan assy dropped out easy. Used a drop of hot melt to hold the screws in place for reassembly. Fab has now done 150k and daughter has no wish to get rid before 250k. Fingers crossed.