Hello All!

I am baffled as to why my rear window demister doesn't operate. The light comes on, on the dashboard button, but it doesn't throw the relay under the bonnet. I've tried switching over the relay but the relay doesn't seem to be the issue. If I manually throw the relay, the demister works!

Has anyone else experienced this fault, and obvious question: what's the fix?!

Looking forward to a resolution!
Rupert