Oh Joy! after having my XFS written off and not long after having a new Intercooler fitted (see previous posts!), I bought another XFS 2011 with 50,000 on the clock. Just got to 58,000 and this one has gone as well - exactly the same - split around the top of the plastic cover. I am going to attempt a repair using fibreglass on the split joint and a wire wrapping! if I can get at it easy!
I am disgusted - It's clearly a design fault and a letter to Jag goes out tomorrow!