There are a number of hidden screws.. Three are on the left side under the plastic cover passenger side facia, two are obvious the other is attached to a steel arm towards the front, An additional screw can be seen in the glove box and this will have to be removed by unscrewing it with pliers because it is screwed from the facia side prior to assembly, Three further screws (hidden) behind the glove box inner. possibly accessed by removal of the control panel , radio etc. Unfortunatly I didnt know they were there and pulled the glove box inner off, snapping the three fixings. But hay!!! its off. new heather unit £66.00
Dave Wilkinson
October 2012