No heater and fuse no 4 keeps blowing

[scardy]

Hi all, my MK2 Leon FR TDI 07 keeps blowing fuse no 4 on the end of the dashboard. I noticed smoke and burning coming from the drivers side of the scuttle when I replaced the fuse.

I have taken the scuttle off and cleaned out all the leaves and dirt but no sign of any burning. Anyone out there had this problem before? I am melting without the heater!

 

[scardy]

Have also noticed the red backlight does not work on the heater display but LCD still working, maybe a blown bulb shorting out?

 

[scardy]

Smoke coming from front windscreen washer jet! Are these heated? Will remove plastic on bonnet tomorrow to investigate. Got light to come back on heater display but still no blowers!

 

[Asce]

I had a similar issue with fuse 4 blowing. Turned out to be the air con pressure switch for me.

 

[scardy]

Thanks, checked the wiring to the switch and it has melted slightly, maybe it was touching the engine block? Fixed the wiring, reconnected and seems to be working again. Cheers.