Selling your CSL...

[mattCSLnut]

Originally Posted by azrael

Yeah I will be getting it checked as a matter or course, cheers Matt
Plus a month or so ago I left the lights on whilst test driving a car. Battery flat when I went to leave doh!

Bingo ! That accidental battery discharge would have been enough to cause your current problems.
Have you had the battery fully recharged since then ? ... if not, it may not be holding a full charge.
Get the battery fully (and by that I mean professionally) tested as that is most likely to be the culprit
ATB